diff --git a/drivers/base/regmap/Makefile b/drivers/base/regmap/Makefile
index f6c6cb017200..5fdd0845b45e 100644
--- a/drivers/base/regmap/Makefile
+++ b/drivers/base/regmap/Makefile
@@ -8,7 +8,7 @@ obj-$(CONFIG_DEBUG_FS) += regmap-debugfs.o
 obj-$(CONFIG_REGMAP_KUNIT) += regmap-kunit.o
 obj-$(CONFIG_REGMAP_AC97) += regmap-ac97.o
 obj-$(CONFIG_REGMAP_I2C) += regmap-i2c.o
-obj-$(CONFIG_REGMAP_RAM) += regmap-ram.o
+obj-$(CONFIG_REGMAP_RAM) += regmap-ram.o regmap-raw-ram.o
 obj-$(CONFIG_REGMAP_SLIMBUS) += regmap-slimbus.o
 obj-$(CONFIG_REGMAP_SPI) += regmap-spi.o
 obj-$(CONFIG_REGMAP_SPMI) += regmap-spmi.o
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 9bd0dfd1e259..9a9ea514c2d8 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -125,6 +125,9 @@ struct regmap {
 	int reg_stride;
 	int reg_stride_order;
 
+	/* If set, will always write field to HW. */
+	bool force_write_field;
+
 	/* regcache specific members */
 	const struct regcache_ops *cache_ops;
 	enum regcache_type cache_type;
@@ -257,6 +260,8 @@ int regcache_sync_block(struct regmap *map, void *block,
 			unsigned long *cache_present,
 			unsigned int block_base, unsigned int start,
 			unsigned int end);
+bool regcache_reg_needs_sync(struct regmap *map, unsigned int reg,
+			     unsigned int val);
 
 static inline const void *regcache_get_val_addr(struct regmap *map,
 						const void *base,
@@ -267,7 +272,7 @@ static inline const void *regcache_get_val_addr(struct regmap *map,
 
 unsigned int regcache_get_val(struct regmap *map, const void *base,
 			      unsigned int idx);
-bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
+void regcache_set_val(struct regmap *map, void *base, unsigned int idx,
 		      unsigned int val);
 int regcache_lookup_reg(struct regmap *map, unsigned int reg);
 int regcache_sync_val(struct regmap *map, unsigned int reg, unsigned int val);
@@ -312,6 +317,7 @@ struct regmap_ram_data {
 	unsigned int *vals;  /* Allocatd by caller */
 	bool *read;
 	bool *written;
+	enum regmap_endian reg_endian;
 };
 
 /*
@@ -326,5 +332,12 @@ struct regmap *__regmap_init_ram(const struct regmap_config *config,
 #define regmap_init_ram(config, data)					\
 	__regmap_lockdep_wrapper(__regmap_init_ram, #config, config, data)
 
+struct regmap *__regmap_init_raw_ram(const struct regmap_config *config,
+				     struct regmap_ram_data *data,
+				     struct lock_class_key *lock_key,
+				     const char *lock_name);
+
+#define regmap_init_raw_ram(config, data)				\
+	__regmap_lockdep_wrapper(__regmap_init_raw_ram, #config, config, data)
 
 #endif
diff --git a/drivers/base/regmap/regcache-maple.c b/drivers/base/regmap/regcache-maple.c
index c2e3a0f6c218..283c2e02a298 100644
--- a/drivers/base/regmap/regcache-maple.c
+++ b/drivers/base/regmap/regcache-maple.c
@@ -186,6 +186,55 @@ out_unlocked:
 	return ret;
 }
 
+static int regcache_maple_sync_block(struct regmap *map, unsigned long *entry,
+				     struct ma_state *mas,
+				     unsigned int min, unsigned int max)
+{
+	void *buf;
+	unsigned long r;
+	size_t val_bytes = map->format.val_bytes;
+	int ret = 0;
+
+	mas_pause(mas);
+	rcu_read_unlock();
+
+	/*
+	 * Use a raw write if writing more than one register to a
+	 * device that supports raw writes to reduce transaction
+	 * overheads.
+	 */
+	if (max - min > 1 && regmap_can_raw_write(map)) {
+		buf = kmalloc(val_bytes * (max - min), map->alloc_flags);
+		if (!buf) {
+			ret = -ENOMEM;
+			goto out;
+		}
+
+		/* Render the data for a raw write */
+		for (r = min; r < max; r++) {
+			regcache_set_val(map, buf, r - min,
+					 entry[r - mas->index]);
+		}
+
+		ret = _regmap_raw_write(map, min, buf, (max - min) * val_bytes,
+					false);
+
+		kfree(buf);
+	} else {
+		for (r = min; r < max; r++) {
+			ret = _regmap_write(map, r,
+					    entry[r - mas->index]);
+			if (ret != 0)
+				goto out;
+		}
+	}
+
+out:
+	rcu_read_lock();
+
+	return ret;
+}
+
 static int regcache_maple_sync(struct regmap *map, unsigned int min,
 			       unsigned int max)
 {
@@ -194,8 +243,9 @@ static int regcache_maple_sync(struct regmap *map, unsigned int min,
 	MA_STATE(mas, mt, min, max);
 	unsigned long lmin = min;
 	unsigned long lmax = max;
-	unsigned int r;
+	unsigned int r, v, sync_start;
 	int ret;
+	bool sync_needed = false;
 
 	map->cache_bypass = true;
 
@@ -203,18 +253,38 @@ static int regcache_maple_sync(struct regmap *map, unsigned int min,
 
 	mas_for_each(&mas, entry, max) {
 		for (r = max(mas.index, lmin); r <= min(mas.last, lmax); r++) {
-			mas_pause(&mas);
-			rcu_read_unlock();
-			ret = regcache_sync_val(map, r, entry[r - mas.index]);
+			v = entry[r - mas.index];
+
+			if (regcache_reg_needs_sync(map, r, v)) {
+				if (!sync_needed) {
+					sync_start = r;
+					sync_needed = true;
+				}
+				continue;
+			}
+
+			if (!sync_needed)
+				continue;
+
+			ret = regcache_maple_sync_block(map, entry, &mas,
+							sync_start, r);
 			if (ret != 0)
 				goto out;
-			rcu_read_lock();
+			sync_needed = false;
+		}
+
+		if (sync_needed) {
+			ret = regcache_maple_sync_block(map, entry, &mas,
+							sync_start, r);
+			if (ret != 0)
+				goto out;
+			sync_needed = false;
 		}
 	}
 
+out:
 	rcu_read_unlock();
 
-out:
 	map->cache_bypass = false;
 
 	return ret;
@@ -242,11 +312,41 @@ static int regcache_maple_exit(struct regmap *map)
 	return 0;
 }
 
+static int regcache_maple_insert_block(struct regmap *map, int first,
+					int last)
+{
+	struct maple_tree *mt = map->cache;
+	MA_STATE(mas, mt, first, last);
+	unsigned long *entry;
+	int i, ret;
+
+	entry = kcalloc(last - first + 1, sizeof(unsigned long), GFP_KERNEL);
+	if (!entry)
+		return -ENOMEM;
+
+	for (i = 0; i < last - first + 1; i++)
+		entry[i] = map->reg_defaults[first + i].def;
+
+	mas_lock(&mas);
+
+	mas_set_range(&mas, map->reg_defaults[first].reg,
+		      map->reg_defaults[last].reg);
+	ret = mas_store_gfp(&mas, entry, GFP_KERNEL);
+
+	mas_unlock(&mas);
+
+	if (ret)
+		kfree(entry);
+
+	return ret;
+}
+
 static int regcache_maple_init(struct regmap *map)
 {
 	struct maple_tree *mt;
 	int i;
 	int ret;
+	int range_start;
 
 	mt = kmalloc(sizeof(*mt), GFP_KERNEL);
 	if (!mt)
@@ -255,14 +355,30 @@ static int regcache_maple_init(struct regmap *map)
 
 	mt_init(mt);
 
-	for (i = 0; i < map->num_reg_defaults; i++) {
-		ret = regcache_maple_write(map,
-					   map->reg_defaults[i].reg,
-					   map->reg_defaults[i].def);
-		if (ret)
-			goto err;
+	if (!map->num_reg_defaults)
+		return 0;
+
+	range_start = 0;
+
+	/* Scan for ranges of contiguous registers */
+	for (i = 1; i < map->num_reg_defaults; i++) {
+		if (map->reg_defaults[i].reg !=
+		    map->reg_defaults[i - 1].reg + 1) {
+			ret = regcache_maple_insert_block(map, range_start,
+							  i - 1);
+			if (ret != 0)
+				goto err;
+
+			range_start = i;
+		}
 	}
 
+	/* Add the last block */
+	ret = regcache_maple_insert_block(map, range_start,
+					  map->num_reg_defaults - 1);
+	if (ret != 0)
+		goto err;
+
 	return 0;
 
 err:
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 97c681fcf9f6..28bc3ae9458a 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -279,8 +279,8 @@ int regcache_write(struct regmap *map,
 	return 0;
 }
 
-static bool regcache_reg_needs_sync(struct regmap *map, unsigned int reg,
-				    unsigned int val)
+bool regcache_reg_needs_sync(struct regmap *map, unsigned int reg,
+			     unsigned int val)
 {
 	int ret;
 
@@ -561,17 +561,14 @@ void regcache_cache_bypass(struct regmap *map, bool enable)
 }
 EXPORT_SYMBOL_GPL(regcache_cache_bypass);
 
-bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
+void regcache_set_val(struct regmap *map, void *base, unsigned int idx,
 		      unsigned int val)
 {
-	if (regcache_get_val(map, base, idx) == val)
-		return true;
-
 	/* Use device native format if possible */
 	if (map->format.format_val) {
 		map->format.format_val(base + (map->cache_word_size * idx),
 				       val, 0);
-		return false;
+		return;
 	}
 
 	switch (map->cache_word_size) {
@@ -604,7 +601,6 @@ bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
 	default:
 		BUG();
 	}
-	return false;
 }
 
 unsigned int regcache_get_val(struct regmap *map, const void *base,
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index c491fabe3617..f36027591e1a 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -636,6 +636,17 @@ void regmap_debugfs_init(struct regmap *map)
 				    &regmap_cache_bypass_fops);
 	}
 
+	/*
+	 * This could interfere with driver operation. Therefore, don't provide
+	 * any real compile time configuration option for this feature. One will
+	 * have to modify the source code directly in order to use it.
+	 */
+#undef REGMAP_ALLOW_FORCE_WRITE_FIELD_DEBUGFS
+#ifdef REGMAP_ALLOW_FORCE_WRITE_FIELD_DEBUGFS
+	debugfs_create_bool("force_write_field", 0600, map->debugfs,
+			    &map->force_write_field);
+#endif
+
 	next = rb_first(&map->range_tree);
 	while (next) {
 		range_node = rb_entry(next, struct regmap_range_node, node);
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index b99bb2369fff..ced0dcf86e0b 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -30,9 +30,6 @@ struct regmap_irq_chip_data {
 	int irq;
 	int wake_count;
 
-	unsigned int mask_base;
-	unsigned int unmask_base;
-
 	void *status_reg_buf;
 	unsigned int *main_status_buf;
 	unsigned int *status_buf;
@@ -41,7 +38,6 @@ struct regmap_irq_chip_data {
 	unsigned int *wake_buf;
 	unsigned int *type_buf;
 	unsigned int *type_buf_def;
-	unsigned int **virt_buf;
 	unsigned int **config_buf;
 
 	unsigned int irq_reg_stride;
@@ -114,25 +110,22 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
 	 * suppress pointless writes.
 	 */
 	for (i = 0; i < d->chip->num_regs; i++) {
-		if (d->mask_base) {
-			if (d->chip->handle_mask_sync)
-				d->chip->handle_mask_sync(d->map, i,
-							  d->mask_buf_def[i],
-							  d->mask_buf[i],
-							  d->chip->irq_drv_data);
-			else {
-				reg = d->get_irq_reg(d, d->mask_base, i);
-				ret = regmap_update_bits(d->map, reg,
-						d->mask_buf_def[i],
-						d->mask_buf[i]);
-				if (ret)
-					dev_err(d->map->dev, "Failed to sync masks in %x\n",
-						reg);
-			}
+		if (d->chip->handle_mask_sync)
+			d->chip->handle_mask_sync(i, d->mask_buf_def[i],
+						  d->mask_buf[i],
+						  d->chip->irq_drv_data);
+
+		if (d->chip->mask_base && !d->chip->handle_mask_sync) {
+			reg = d->get_irq_reg(d, d->chip->mask_base, i);
+			ret = regmap_update_bits(d->map, reg,
+						 d->mask_buf_def[i],
+						 d->mask_buf[i]);
+			if (ret)
+				dev_err(d->map->dev, "Failed to sync masks in %x\n", reg);
 		}
 
-		if (d->unmask_base) {
-			reg = d->get_irq_reg(d, d->unmask_base, i);
+		if (d->chip->unmask_base && !d->chip->handle_mask_sync) {
+			reg = d->get_irq_reg(d, d->chip->unmask_base, i);
 			ret = regmap_update_bits(d->map, reg,
 					d->mask_buf_def[i], ~d->mask_buf[i]);
 			if (ret)
@@ -183,34 +176,6 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
 		}
 	}
 
-	/* Don't update the type bits if we're using mask bits for irq type. */
-	if (!d->chip->type_in_mask) {
-		for (i = 0; i < d->chip->num_type_reg; i++) {
-			if (!d->type_buf_def[i])
-				continue;
-			reg = d->get_irq_reg(d, d->chip->type_base, i);
-			ret = regmap_update_bits(d->map, reg,
-						 d->type_buf_def[i], d->type_buf[i]);
-			if (ret != 0)
-				dev_err(d->map->dev, "Failed to sync type in %x\n",
-					reg);
-		}
-	}
-
-	if (d->chip->num_virt_regs) {
-		for (i = 0; i < d->chip->num_virt_regs; i++) {
-			for (j = 0; j < d->chip->num_regs; j++) {
-				reg = d->get_irq_reg(d, d->chip->virt_reg_base[i],
-						     j);
-				ret = regmap_write(map, reg, d->virt_buf[i][j]);
-				if (ret != 0)
-					dev_err(d->map->dev,
-						"Failed to write virt 0x%x: %d\n",
-						reg, ret);
-			}
-		}
-	}
-
 	for (i = 0; i < d->chip->num_config_bases; i++) {
 		for (j = 0; j < d->chip->num_config_regs; j++) {
 			reg = d->get_irq_reg(d, d->chip->config_base[i], j);
@@ -289,41 +254,9 @@ static int regmap_irq_set_type(struct irq_data *data, unsigned int type)
 
 	reg = t->type_reg_offset / map->reg_stride;
 
-	if (t->type_reg_mask)
-		d->type_buf[reg] &= ~t->type_reg_mask;
-	else
-		d->type_buf[reg] &= ~(t->type_falling_val |
-				      t->type_rising_val |
-				      t->type_level_low_val |
-				      t->type_level_high_val);
-	switch (type) {
-	case IRQ_TYPE_EDGE_FALLING:
-		d->type_buf[reg] |= t->type_falling_val;
-		break;
-
-	case IRQ_TYPE_EDGE_RISING:
-		d->type_buf[reg] |= t->type_rising_val;
-		break;
-
-	case IRQ_TYPE_EDGE_BOTH:
-		d->type_buf[reg] |= (t->type_falling_val |
-					t->type_rising_val);
-		break;
-
-	case IRQ_TYPE_LEVEL_HIGH:
-		d->type_buf[reg] |= t->type_level_high_val;
-		break;
-
-	case IRQ_TYPE_LEVEL_LOW:
-		d->type_buf[reg] |= t->type_level_low_val;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	if (d->chip->set_type_virt) {
-		ret = d->chip->set_type_virt(d->virt_buf, type, data->hwirq,
-					     reg);
+	if (d->chip->type_in_mask) {
+		ret = regmap_irq_set_type_config_simple(&d->type_buf, type,
+							irq_data, reg, d->chip->irq_drv_data);
 		if (ret)
 			return ret;
 	}
@@ -390,15 +323,8 @@ static inline int read_sub_irq_data(struct regmap_irq_chip_data *data,
 			unsigned int offset = subreg->offset[i];
 			unsigned int index = offset / map->reg_stride;
 
-			if (chip->not_fixed_stride)
-				ret = regmap_read(map,
-						chip->status_base + offset,
-						&data->status_buf[b]);
-			else
-				ret = regmap_read(map,
-						chip->status_base + offset,
-						&data->status_buf[index]);
-
+			ret = regmap_read(map, chip->status_base + offset,
+					  &data->status_buf[index]);
 			if (ret)
 				break;
 		}
@@ -453,17 +379,7 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
 		 * sake of simplicity. and add bulk reads only if needed
 		 */
 		for (i = 0; i < chip->num_main_regs; i++) {
-			/*
-			 * For not_fixed_stride, don't use ->get_irq_reg().
-			 * It would produce an incorrect result.
-			 */
-			if (data->chip->not_fixed_stride)
-				reg = chip->main_status +
-					i * map->reg_stride * data->irq_reg_stride;
-			else
-				reg = data->get_irq_reg(data,
-							chip->main_status, i);
-
+			reg = data->get_irq_reg(data, chip->main_status, i);
 			ret = regmap_read(map, reg, &data->main_status_buf[i]);
 			if (ret) {
 				dev_err(map->dev,
@@ -586,12 +502,12 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
 	}
 
 exit:
-	if (chip->runtime_pm)
-		pm_runtime_put(map->dev);
-
 	if (chip->handle_post_irq)
 		chip->handle_post_irq(chip->irq_drv_data);
 
+	if (chip->runtime_pm)
+		pm_runtime_put(map->dev);
+
 	if (handled)
 		return IRQ_HANDLED;
 	else
@@ -629,20 +545,8 @@ static const struct irq_domain_ops regmap_domain_ops = {
 unsigned int regmap_irq_get_irq_reg_linear(struct regmap_irq_chip_data *data,
 					   unsigned int base, int index)
 {
-	const struct regmap_irq_chip *chip = data->chip;
 	struct regmap *map = data->map;
 
-	/*
-	 * FIXME: This is for backward compatibility and should be removed
-	 * when not_fixed_stride is dropped (it's only used by qcom-pm8008).
-	 */
-	if (chip->not_fixed_stride && chip->sub_reg_offsets) {
-		struct regmap_irq_sub_irq_map *subreg;
-
-		subreg = &chip->sub_reg_offsets[0];
-		return base + subreg->offset[0];
-	}
-
 	return base + index * map->reg_stride * data->irq_reg_stride;
 }
 EXPORT_SYMBOL_GPL(regmap_irq_get_irq_reg_linear);
@@ -730,8 +634,6 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 	struct regmap_irq_chip_data *d;
 	int i;
 	int ret = -ENOMEM;
-	int num_type_reg;
-	int num_regs;
 	u32 reg;
 
 	if (chip->num_regs <= 0)
@@ -740,6 +642,9 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 	if (chip->clear_on_unmask && (chip->ack_base || chip->use_ack))
 		return -EINVAL;
 
+	if (chip->mask_base && chip->unmask_base && !chip->mask_unmask_non_inverted)
+		return -EINVAL;
+
 	for (i = 0; i < chip->num_irqs; i++) {
 		if (chip->irqs[i].reg_offset % map->reg_stride)
 			return -EINVAL;
@@ -748,20 +653,6 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 			return -EINVAL;
 	}
 
-	if (chip->not_fixed_stride) {
-		dev_warn(map->dev, "not_fixed_stride is deprecated; use ->get_irq_reg() instead");
-
-		for (i = 0; i < chip->num_regs; i++)
-			if (chip->sub_reg_offsets[i].num_regs != 1)
-				return -EINVAL;
-	}
-
-	if (chip->num_type_reg)
-		dev_warn(map->dev, "type registers are deprecated; use config registers instead");
-
-	if (chip->num_virt_regs || chip->virt_reg_base || chip->set_type_virt)
-		dev_warn(map->dev, "virtual registers are deprecated; use config registers instead");
-
 	if (irq_base) {
 		irq_base = irq_alloc_descs(irq_base, 0, chip->num_irqs, 0);
 		if (irq_base < 0) {
@@ -806,43 +697,17 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 			goto err_alloc;
 	}
 
-	/*
-	 * Use num_config_regs if defined, otherwise fall back to num_type_reg
-	 * to maintain backward compatibility.
-	 */
-	num_type_reg = chip->num_config_regs ? chip->num_config_regs
-			: chip->num_type_reg;
-	num_regs = chip->type_in_mask ? chip->num_regs : num_type_reg;
-	if (num_regs) {
-		d->type_buf_def = kcalloc(num_regs,
+	if (chip->type_in_mask) {
+		d->type_buf_def = kcalloc(chip->num_regs,
 					  sizeof(*d->type_buf_def), GFP_KERNEL);
 		if (!d->type_buf_def)
 			goto err_alloc;
 
-		d->type_buf = kcalloc(num_regs, sizeof(*d->type_buf),
-				      GFP_KERNEL);
+		d->type_buf = kcalloc(chip->num_regs, sizeof(*d->type_buf), GFP_KERNEL);
 		if (!d->type_buf)
 			goto err_alloc;
 	}
 
-	if (chip->num_virt_regs) {
-		/*
-		 * Create virt_buf[chip->num_extra_config_regs][chip->num_regs]
-		 */
-		d->virt_buf = kcalloc(chip->num_virt_regs, sizeof(*d->virt_buf),
-				      GFP_KERNEL);
-		if (!d->virt_buf)
-			goto err_alloc;
-
-		for (i = 0; i < chip->num_virt_regs; i++) {
-			d->virt_buf[i] = kcalloc(chip->num_regs,
-						 sizeof(**d->virt_buf),
-						 GFP_KERNEL);
-			if (!d->virt_buf[i])
-				goto err_alloc;
-		}
-	}
-
 	if (chip->num_config_bases && chip->num_config_regs) {
 		/*
 		 * Create config_buf[num_config_bases][num_config_regs]
@@ -868,28 +733,6 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 	d->chip = chip;
 	d->irq_base = irq_base;
 
-	if (chip->mask_base && chip->unmask_base &&
-	    !chip->mask_unmask_non_inverted) {
-		/*
-		 * Chips that specify both mask_base and unmask_base used to
-		 * get inverted mask behavior by default, with no way to ask
-		 * for the normal, non-inverted behavior. This "inverted by
-		 * default" behavior is deprecated, but we have to support it
-		 * until existing drivers have been fixed.
-		 *
-		 * Existing drivers should be updated by swapping mask_base
-		 * and unmask_base and setting mask_unmask_non_inverted=true.
-		 * New drivers should always set the flag.
-		 */
-		dev_warn(map->dev, "mask_base and unmask_base are inverted, please fix it");
-
-		d->mask_base = chip->unmask_base;
-		d->unmask_base = chip->mask_base;
-	} else {
-		d->mask_base = chip->mask_base;
-		d->unmask_base = chip->unmask_base;
-	}
-
 	if (chip->irq_reg_stride)
 		d->irq_reg_stride = chip->irq_reg_stride;
 	else
@@ -918,29 +761,28 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 	for (i = 0; i < chip->num_regs; i++) {
 		d->mask_buf[i] = d->mask_buf_def[i];
 
-		if (d->mask_base) {
-			if (chip->handle_mask_sync) {
-				ret = chip->handle_mask_sync(d->map, i,
-							     d->mask_buf_def[i],
-							     d->mask_buf[i],
-							     chip->irq_drv_data);
-				if (ret)
-					goto err_alloc;
-			} else {
-				reg = d->get_irq_reg(d, d->mask_base, i);
-				ret = regmap_update_bits(d->map, reg,
-						d->mask_buf_def[i],
-						d->mask_buf[i]);
-				if (ret) {
-					dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
-						reg, ret);
-					goto err_alloc;
-				}
+		if (chip->handle_mask_sync) {
+			ret = chip->handle_mask_sync(i, d->mask_buf_def[i],
+						     d->mask_buf[i],
+						     chip->irq_drv_data);
+			if (ret)
+				goto err_alloc;
+		}
+
+		if (chip->mask_base && !chip->handle_mask_sync) {
+			reg = d->get_irq_reg(d, chip->mask_base, i);
+			ret = regmap_update_bits(d->map, reg,
+						 d->mask_buf_def[i],
+						 d->mask_buf[i]);
+			if (ret) {
+				dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
+					reg, ret);
+				goto err_alloc;
 			}
 		}
 
-		if (d->unmask_base) {
-			reg = d->get_irq_reg(d, d->unmask_base, i);
+		if (chip->unmask_base && !chip->handle_mask_sync) {
+			reg = d->get_irq_reg(d, chip->unmask_base, i);
 			ret = regmap_update_bits(d->map, reg,
 					d->mask_buf_def[i], ~d->mask_buf[i]);
 			if (ret) {
@@ -1014,20 +856,6 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 		}
 	}
 
-	if (chip->num_type_reg && !chip->type_in_mask) {
-		for (i = 0; i < chip->num_type_reg; ++i) {
-			reg = d->get_irq_reg(d, d->chip->type_base, i);
-
-			ret = regmap_read(map, reg, &d->type_buf_def[i]);
-
-			if (ret) {
-				dev_err(map->dev, "Failed to get type defaults at 0x%x: %d\n",
-					reg, ret);
-				goto err_alloc;
-			}
-		}
-	}
-
 	if (irq_base)
 		d->domain = irq_domain_create_legacy(fwnode, chip->num_irqs,
 						     irq_base, 0,
@@ -1064,11 +892,6 @@ err_alloc:
 	kfree(d->mask_buf);
 	kfree(d->status_buf);
 	kfree(d->status_reg_buf);
-	if (d->virt_buf) {
-		for (i = 0; i < chip->num_virt_regs; i++)
-			kfree(d->virt_buf[i]);
-		kfree(d->virt_buf);
-	}
 	if (d->config_buf) {
 		for (i = 0; i < chip->num_config_bases; i++)
 			kfree(d->config_buf[i]);
diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c
index f76d41688134..24257aa9004d 100644
--- a/drivers/base/regmap/regmap-kunit.c
+++ b/drivers/base/regmap/regmap-kunit.c
@@ -92,6 +92,11 @@ static struct regmap *gen_regmap(struct regmap_config *config,
 	return ret;
 }
 
+static bool reg_5_false(struct device *context, unsigned int reg)
+{
+	return reg != 5;
+}
+
 static void basic_read_write(struct kunit *test)
 {
 	struct regcache_types *t = (struct regcache_types *)test->param_value;
@@ -191,6 +196,81 @@ static void bulk_read(struct kunit *test)
 	regmap_exit(map);
 }
 
+static void write_readonly(struct kunit *test)
+{
+	struct regcache_types *t = (struct regcache_types *)test->param_value;
+	struct regmap *map;
+	struct regmap_config config;
+	struct regmap_ram_data *data;
+	unsigned int val;
+	int i;
+
+	config = test_regmap_config;
+	config.cache_type = t->type;
+	config.num_reg_defaults = BLOCK_TEST_SIZE;
+	config.writeable_reg = reg_5_false;
+
+	map = gen_regmap(&config, &data);
+	KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+	if (IS_ERR(map))
+		return;
+
+	get_random_bytes(&val, sizeof(val));
+
+	for (i = 0; i < BLOCK_TEST_SIZE; i++)
+		data->written[i] = false;
+
+	/* Change the value of all registers, readonly should fail */
+	for (i = 0; i < BLOCK_TEST_SIZE; i++)
+		KUNIT_EXPECT_EQ(test, i != 5, regmap_write(map, i, val) == 0);
+
+	/* Did that match what we see on the device? */
+	for (i = 0; i < BLOCK_TEST_SIZE; i++)
+		KUNIT_EXPECT_EQ(test, i != 5, data->written[i]);
+
+	regmap_exit(map);
+}
+
+static void read_writeonly(struct kunit *test)
+{
+	struct regcache_types *t = (struct regcache_types *)test->param_value;
+	struct regmap *map;
+	struct regmap_config config;
+	struct regmap_ram_data *data;
+	unsigned int val;
+	int i;
+
+	config = test_regmap_config;
+	config.cache_type = t->type;
+	config.readable_reg = reg_5_false;
+
+	map = gen_regmap(&config, &data);
+	KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+	if (IS_ERR(map))
+		return;
+
+	for (i = 0; i < BLOCK_TEST_SIZE; i++)
+		data->read[i] = false;
+
+	/*
+	 * Try to read all the registers, the writeonly one should
+	 * fail if we aren't using the flat cache.
+	 */
+	for (i = 0; i < BLOCK_TEST_SIZE; i++) {
+		if (t->type != REGCACHE_FLAT) {
+			KUNIT_EXPECT_EQ(test, i != 5,
+					regmap_read(map, i, &val) == 0);
+		} else {
+			KUNIT_EXPECT_EQ(test, 0, regmap_read(map, i, &val));
+		}
+	}
+
+	/* Did we trigger a hardware access? */
+	KUNIT_EXPECT_FALSE(test, data->read[5]);
+
+	regmap_exit(map);
+}
+
 static void reg_defaults(struct kunit *test)
 {
 	struct regcache_types *t = (struct regcache_types *)test->param_value;
@@ -609,6 +689,47 @@ static void cache_sync_defaults(struct kunit *test)
 	regmap_exit(map);
 }
 
+static void cache_sync_readonly(struct kunit *test)
+{
+	struct regcache_types *t = (struct regcache_types *)test->param_value;
+	struct regmap *map;
+	struct regmap_config config;
+	struct regmap_ram_data *data;
+	unsigned int val;
+	int i;
+
+	config = test_regmap_config;
+	config.cache_type = t->type;
+	config.writeable_reg = reg_5_false;
+
+	map = gen_regmap(&config, &data);
+	KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+	if (IS_ERR(map))
+		return;
+
+	/* Read all registers to fill the cache */
+	for (i = 0; i < BLOCK_TEST_SIZE; i++)
+		KUNIT_EXPECT_EQ(test, 0, regmap_read(map, i, &val));
+
+	/* Change the value of all registers, readonly should fail */
+	get_random_bytes(&val, sizeof(val));
+	regcache_cache_only(map, true);
+	for (i = 0; i < BLOCK_TEST_SIZE; i++)
+		KUNIT_EXPECT_EQ(test, i != 5, regmap_write(map, i, val) == 0);
+	regcache_cache_only(map, false);
+
+	/* Resync */
+	for (i = 0; i < BLOCK_TEST_SIZE; i++)
+		data->written[i] = false;
+	KUNIT_EXPECT_EQ(test, 0, regcache_sync(map));
+
+	/* Did that match what we see on the device? */
+	for (i = 0; i < BLOCK_TEST_SIZE; i++)
+		KUNIT_EXPECT_EQ(test, i != 5, data->written[i]);
+
+	regmap_exit(map);
+}
+
 static void cache_sync_patch(struct kunit *test)
 {
 	struct regcache_types *t = (struct regcache_types *)test->param_value;
@@ -712,10 +833,333 @@ static void cache_drop(struct kunit *test)
 	regmap_exit(map);
 }
 
+struct raw_test_types {
+	const char *name;
+
+	enum regcache_type cache_type;
+	enum regmap_endian val_endian;
+};
+
+static void raw_to_desc(const struct raw_test_types *t, char *desc)
+{
+	strcpy(desc, t->name);
+}
+
+static const struct raw_test_types raw_types_list[] = {
+	{ "none-little",   REGCACHE_NONE,   REGMAP_ENDIAN_LITTLE },
+	{ "none-big",      REGCACHE_NONE,   REGMAP_ENDIAN_BIG },
+	{ "flat-little",   REGCACHE_FLAT,   REGMAP_ENDIAN_LITTLE },
+	{ "flat-big",      REGCACHE_FLAT,   REGMAP_ENDIAN_BIG },
+	{ "rbtree-little", REGCACHE_RBTREE, REGMAP_ENDIAN_LITTLE },
+	{ "rbtree-big",    REGCACHE_RBTREE, REGMAP_ENDIAN_BIG },
+	{ "maple-little",  REGCACHE_MAPLE,  REGMAP_ENDIAN_LITTLE },
+	{ "maple-big",     REGCACHE_MAPLE,  REGMAP_ENDIAN_BIG },
+};
+
+KUNIT_ARRAY_PARAM(raw_test_types, raw_types_list, raw_to_desc);
+
+static const struct raw_test_types raw_cache_types_list[] = {
+	{ "flat-little",   REGCACHE_FLAT,   REGMAP_ENDIAN_LITTLE },
+	{ "flat-big",      REGCACHE_FLAT,   REGMAP_ENDIAN_BIG },
+	{ "rbtree-little", REGCACHE_RBTREE, REGMAP_ENDIAN_LITTLE },
+	{ "rbtree-big",    REGCACHE_RBTREE, REGMAP_ENDIAN_BIG },
+	{ "maple-little",  REGCACHE_MAPLE,  REGMAP_ENDIAN_LITTLE },
+	{ "maple-big",     REGCACHE_MAPLE,  REGMAP_ENDIAN_BIG },
+};
+
+KUNIT_ARRAY_PARAM(raw_test_cache_types, raw_cache_types_list, raw_to_desc);
+
+static const struct regmap_config raw_regmap_config = {
+	.max_register = BLOCK_TEST_SIZE,
+
+	.reg_format_endian = REGMAP_ENDIAN_LITTLE,
+	.reg_bits = 16,
+	.val_bits = 16,
+};
+
+static struct regmap *gen_raw_regmap(struct regmap_config *config,
+				     struct raw_test_types *test_type,
+				     struct regmap_ram_data **data)
+{
+	u16 *buf;
+	struct regmap *ret;
+	size_t size = (config->max_register + 1) * config->reg_bits / 8;
+	int i;
+	struct reg_default *defaults;
+
+	config->cache_type = test_type->cache_type;
+	config->val_format_endian = test_type->val_endian;
+
+	buf = kmalloc(size, GFP_KERNEL);
+	if (!buf)
+		return ERR_PTR(-ENOMEM);
+
+	get_random_bytes(buf, size);
+
+	*data = kzalloc(sizeof(**data), GFP_KERNEL);
+	if (!(*data))
+		return ERR_PTR(-ENOMEM);
+	(*data)->vals = (void *)buf;
+
+	config->num_reg_defaults = config->max_register + 1;
+	defaults = kcalloc(config->num_reg_defaults,
+			   sizeof(struct reg_default),
+			   GFP_KERNEL);
+	if (!defaults)
+		return ERR_PTR(-ENOMEM);
+	config->reg_defaults = defaults;
+
+	for (i = 0; i < config->num_reg_defaults; i++) {
+		defaults[i].reg = i;
+		switch (test_type->val_endian) {
+		case REGMAP_ENDIAN_LITTLE:
+			defaults[i].def = le16_to_cpu(buf[i]);
+			break;
+		case REGMAP_ENDIAN_BIG:
+			defaults[i].def = be16_to_cpu(buf[i]);
+			break;
+		default:
+			return ERR_PTR(-EINVAL);
+		}
+	}
+
+	/*
+	 * We use the defaults in the tests but they don't make sense
+	 * to the core if there's no cache.
+	 */
+	if (config->cache_type == REGCACHE_NONE)
+		config->num_reg_defaults = 0;
+
+	ret = regmap_init_raw_ram(config, *data);
+	if (IS_ERR(ret)) {
+		kfree(buf);
+		kfree(*data);
+	}
+
+	return ret;
+}
+
+static void raw_read_defaults_single(struct kunit *test)
+{
+	struct raw_test_types *t = (struct raw_test_types *)test->param_value;
+	struct regmap *map;
+	struct regmap_config config;
+	struct regmap_ram_data *data;
+	unsigned int rval;
+	int i;
+
+	config = raw_regmap_config;
+
+	map = gen_raw_regmap(&config, t, &data);
+	KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+	if (IS_ERR(map))
+		return;
+
+	/* Check that we can read the defaults via the API */
+	for (i = 0; i < config.max_register + 1; i++) {
+		KUNIT_EXPECT_EQ(test, 0, regmap_read(map, i, &rval));
+		KUNIT_EXPECT_EQ(test, config.reg_defaults[i].def, rval);
+	}
+
+	regmap_exit(map);
+}
+
+static void raw_read_defaults(struct kunit *test)
+{
+	struct raw_test_types *t = (struct raw_test_types *)test->param_value;
+	struct regmap *map;
+	struct regmap_config config;
+	struct regmap_ram_data *data;
+	u16 *rval;
+	u16 def;
+	size_t val_len;
+	int i;
+
+	config = raw_regmap_config;
+
+	map = gen_raw_regmap(&config, t, &data);
+	KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+	if (IS_ERR(map))
+		return;
+
+	val_len = sizeof(*rval) * (config.max_register + 1);
+	rval = kmalloc(val_len, GFP_KERNEL);
+	KUNIT_ASSERT_TRUE(test, rval != NULL);
+	if (!rval)
+		return;
+	
+	/* Check that we can read the defaults via the API */
+	KUNIT_EXPECT_EQ(test, 0, regmap_raw_read(map, 0, rval, val_len));
+	for (i = 0; i < config.max_register + 1; i++) {
+		def = config.reg_defaults[i].def;
+		if (config.val_format_endian == REGMAP_ENDIAN_BIG) {
+			KUNIT_EXPECT_EQ(test, def, be16_to_cpu(rval[i]));
+		} else {
+			KUNIT_EXPECT_EQ(test, def, le16_to_cpu(rval[i]));
+		}
+	}
+	
+	kfree(rval);
+	regmap_exit(map);
+}
+
+static void raw_write_read_single(struct kunit *test)
+{
+	struct raw_test_types *t = (struct raw_test_types *)test->param_value;
+	struct regmap *map;
+	struct regmap_config config;
+	struct regmap_ram_data *data;
+	u16 val;
+	unsigned int rval;
+
+	config = raw_regmap_config;
+
+	map = gen_raw_regmap(&config, t, &data);
+	KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+	if (IS_ERR(map))
+		return;
+
+	get_random_bytes(&val, sizeof(val));
+
+	/* If we write a value to a register we can read it back */
+	KUNIT_EXPECT_EQ(test, 0, regmap_write(map, 0, val));
+	KUNIT_EXPECT_EQ(test, 0, regmap_read(map, 0, &rval));
+	KUNIT_EXPECT_EQ(test, val, rval);
+
+	regmap_exit(map);
+}
+
+static void raw_write(struct kunit *test)
+{
+	struct raw_test_types *t = (struct raw_test_types *)test->param_value;
+	struct regmap *map;
+	struct regmap_config config;
+	struct regmap_ram_data *data;
+	u16 *hw_buf;
+	u16 val[2];
+	unsigned int rval;
+	int i;
+
+	config = raw_regmap_config;
+
+	map = gen_raw_regmap(&config, t, &data);
+	KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+	if (IS_ERR(map))
+		return;
+
+	hw_buf = (u16 *)data->vals;
+
+	get_random_bytes(&val, sizeof(val));
+
+	/* Do a raw write */
+	KUNIT_EXPECT_EQ(test, 0, regmap_raw_write(map, 2, val, sizeof(val)));
+
+	/* We should read back the new values, and defaults for the rest */
+	for (i = 0; i < config.max_register + 1; i++) {
+		KUNIT_EXPECT_EQ(test, 0, regmap_read(map, i, &rval));
+
+		switch (i) {
+		case 2:
+		case 3:
+			if (config.val_format_endian == REGMAP_ENDIAN_BIG) {
+				KUNIT_EXPECT_EQ(test, rval,
+						be16_to_cpu(val[i % 2]));
+			} else {
+				KUNIT_EXPECT_EQ(test, rval,
+						le16_to_cpu(val[i % 2]));
+			}
+			break;
+		default:
+			KUNIT_EXPECT_EQ(test, config.reg_defaults[i].def, rval);
+			break;
+		}
+	}
+
+	/* The values should appear in the "hardware" */
+	KUNIT_EXPECT_MEMEQ(test, &hw_buf[2], val, sizeof(val));
+
+	regmap_exit(map);
+}
+
+static void raw_sync(struct kunit *test)
+{
+	struct raw_test_types *t = (struct raw_test_types *)test->param_value;
+	struct regmap *map;
+	struct regmap_config config;
+	struct regmap_ram_data *data;
+	u16 val[2];
+	u16 *hw_buf;
+	unsigned int rval;
+	int i;
+
+	config = raw_regmap_config;
+
+	map = gen_raw_regmap(&config, t, &data);
+	KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+	if (IS_ERR(map))
+		return;
+
+	hw_buf = (u16 *)data->vals;
+
+	get_random_bytes(&val, sizeof(val));
+
+	/* Do a regular write and a raw write in cache only mode */
+	regcache_cache_only(map, true);
+	KUNIT_EXPECT_EQ(test, 0, regmap_raw_write(map, 2, val, sizeof(val)));
+	if (config.val_format_endian == REGMAP_ENDIAN_BIG)
+		KUNIT_EXPECT_EQ(test, 0, regmap_write(map, 6,
+						      be16_to_cpu(val[0])));
+	else
+		KUNIT_EXPECT_EQ(test, 0, regmap_write(map, 6,
+						      le16_to_cpu(val[0])));
+
+	/* We should read back the new values, and defaults for the rest */
+	for (i = 0; i < config.max_register + 1; i++) {
+		KUNIT_EXPECT_EQ(test, 0, regmap_read(map, i, &rval));
+
+		switch (i) {
+		case 2:
+		case 3:
+		case 6:
+			if (config.val_format_endian == REGMAP_ENDIAN_BIG) {
+				KUNIT_EXPECT_EQ(test, rval,
+						be16_to_cpu(val[i % 2]));
+			} else {
+				KUNIT_EXPECT_EQ(test, rval,
+						le16_to_cpu(val[i % 2]));
+			}
+			break;
+		default:
+			KUNIT_EXPECT_EQ(test, config.reg_defaults[i].def, rval);
+			break;
+		}
+	}
+	
+	/* The values should not appear in the "hardware" */
+	KUNIT_EXPECT_MEMNEQ(test, &hw_buf[2], val, sizeof(val));
+	KUNIT_EXPECT_MEMNEQ(test, &hw_buf[6], val, sizeof(u16));
+
+	for (i = 0; i < config.max_register + 1; i++)
+		data->written[i] = false;
+
+	/* Do the sync */
+	regcache_cache_only(map, false);
+	regcache_mark_dirty(map);
+	KUNIT_EXPECT_EQ(test, 0, regcache_sync(map));
+
+	/* The values should now appear in the "hardware" */
+	KUNIT_EXPECT_MEMEQ(test, &hw_buf[2], val, sizeof(val));
+	KUNIT_EXPECT_MEMEQ(test, &hw_buf[6], val, sizeof(u16));
+
+	regmap_exit(map);
+}
+
 static struct kunit_case regmap_test_cases[] = {
 	KUNIT_CASE_PARAM(basic_read_write, regcache_types_gen_params),
 	KUNIT_CASE_PARAM(bulk_write, regcache_types_gen_params),
 	KUNIT_CASE_PARAM(bulk_read, regcache_types_gen_params),
+	KUNIT_CASE_PARAM(write_readonly, regcache_types_gen_params),
+	KUNIT_CASE_PARAM(read_writeonly, regcache_types_gen_params),
 	KUNIT_CASE_PARAM(reg_defaults, regcache_types_gen_params),
 	KUNIT_CASE_PARAM(reg_defaults_read_dev, regcache_types_gen_params),
 	KUNIT_CASE_PARAM(register_patch, regcache_types_gen_params),
@@ -725,8 +1169,15 @@ static struct kunit_case regmap_test_cases[] = {
 	KUNIT_CASE_PARAM(cache_bypass, real_cache_types_gen_params),
 	KUNIT_CASE_PARAM(cache_sync, real_cache_types_gen_params),
 	KUNIT_CASE_PARAM(cache_sync_defaults, real_cache_types_gen_params),
+	KUNIT_CASE_PARAM(cache_sync_readonly, real_cache_types_gen_params),
 	KUNIT_CASE_PARAM(cache_sync_patch, real_cache_types_gen_params),
 	KUNIT_CASE_PARAM(cache_drop, sparse_cache_types_gen_params),
+
+	KUNIT_CASE_PARAM(raw_read_defaults_single, raw_test_types_gen_params),
+	KUNIT_CASE_PARAM(raw_read_defaults, raw_test_types_gen_params),
+	KUNIT_CASE_PARAM(raw_write_read_single, raw_test_types_gen_params),
+	KUNIT_CASE_PARAM(raw_write, raw_test_types_gen_params),
+	KUNIT_CASE_PARAM(raw_sync, raw_test_cache_types_gen_params),
 	{}
 };
 
diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c
index 3ccdd86a97e7..8132b5c101c4 100644
--- a/drivers/base/regmap/regmap-mmio.c
+++ b/drivers/base/regmap/regmap-mmio.c
@@ -448,7 +448,7 @@ static struct regmap_mmio_context *regmap_mmio_gen_context(struct device *dev,
 	if (min_stride < 0)
 		return ERR_PTR(min_stride);
 
-	if (config->reg_stride < min_stride)
+	if (config->reg_stride && config->reg_stride < min_stride)
 		return ERR_PTR(-EINVAL);
 
 	if (config->use_relaxed_mmio && config->io_port)
diff --git a/drivers/base/regmap/regmap-raw-ram.c b/drivers/base/regmap/regmap-raw-ram.c
new file mode 100644
index 000000000000..c9b800885f3b
--- /dev/null
+++ b/drivers/base/regmap/regmap-raw-ram.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Register map access API - Memory region with raw access
+//
+// This is intended for testing only
+//
+// Copyright (c) 2023, Arm Ltd
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/swab.h>
+
+#include "internal.h"
+
+static unsigned int decode_reg(enum regmap_endian endian, const void *reg)
+{
+	const u16 *r = reg;
+
+	if (endian == REGMAP_ENDIAN_BIG)
+		return be16_to_cpu(*r);
+	else
+		return le16_to_cpu(*r);
+}
+
+static int regmap_raw_ram_gather_write(void *context,
+				       const void *reg, size_t reg_len,
+				       const void *val, size_t val_len)
+{
+	struct regmap_ram_data *data = context;
+	unsigned int r;
+	u16 *our_buf = (u16 *)data->vals;
+	int i;
+
+	if (reg_len != 2)
+		return -EINVAL;
+	if (val_len % 2)
+		return -EINVAL;
+
+	r = decode_reg(data->reg_endian, reg);
+	memcpy(&our_buf[r], val, val_len);
+
+	for (i = 0; i < val_len / 2; i++)
+		data->written[r + i] = true;
+	
+	return 0;
+}
+
+static int regmap_raw_ram_write(void *context, const void *data, size_t count)
+{
+	return regmap_raw_ram_gather_write(context, data, 2,
+					   data + 2, count - 2);
+}
+
+static int regmap_raw_ram_read(void *context,
+			       const void *reg, size_t reg_len,
+			       void *val, size_t val_len)
+{
+	struct regmap_ram_data *data = context;
+	unsigned int r;
+	u16 *our_buf = (u16 *)data->vals;
+	int i;
+
+	if (reg_len != 2)
+		return -EINVAL;
+	if (val_len % 2)
+		return -EINVAL;
+
+	r = decode_reg(data->reg_endian, reg);
+	memcpy(val, &our_buf[r], val_len);
+
+	for (i = 0; i < val_len / 2; i++)
+		data->read[r + i] = true;
+
+	return 0;
+}
+
+static void regmap_raw_ram_free_context(void *context)
+{
+	struct regmap_ram_data *data = context;
+
+	kfree(data->vals);
+	kfree(data->read);
+	kfree(data->written);
+	kfree(data);
+}
+
+static const struct regmap_bus regmap_raw_ram = {
+	.fast_io = true,
+	.write = regmap_raw_ram_write,
+	.gather_write = regmap_raw_ram_gather_write,
+	.read = regmap_raw_ram_read,
+	.free_context = regmap_raw_ram_free_context,
+};
+
+struct regmap *__regmap_init_raw_ram(const struct regmap_config *config,
+				     struct regmap_ram_data *data,
+				     struct lock_class_key *lock_key,
+				     const char *lock_name)
+{
+	struct regmap *map;
+
+	if (config->reg_bits != 16)
+		return ERR_PTR(-EINVAL);
+
+	if (!config->max_register) {
+		pr_crit("No max_register specified for RAM regmap\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	data->read = kcalloc(sizeof(bool), config->max_register + 1,
+			     GFP_KERNEL);
+	if (!data->read)
+		return ERR_PTR(-ENOMEM);
+
+	data->written = kcalloc(sizeof(bool), config->max_register + 1,
+				GFP_KERNEL);
+	if (!data->written)
+		return ERR_PTR(-ENOMEM);
+
+	data->reg_endian = config->reg_format_endian;
+
+	map = __regmap_init(NULL, &regmap_raw_ram, data, config,
+			    lock_key, lock_name);
+
+	return map;
+}
+EXPORT_SYMBOL_GPL(__regmap_init_raw_ram);
+
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index fa2d3fba6ac9..89a7f1c459c1 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2983,6 +2983,11 @@ int regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
 		size_t chunk_count, chunk_bytes;
 		size_t chunk_regs = val_count;
 
+		if (!map->cache_bypass && map->cache_only) {
+			ret = -EBUSY;
+			goto out;
+		}
+
 		if (!map->read) {
 			ret = -ENOTSUPP;
 			goto out;
@@ -3078,18 +3083,19 @@ int regmap_noinc_read(struct regmap *map, unsigned int reg,
 		goto out_unlock;
 	}
 
+	/*
+	 * We have not defined the FIFO semantics for cache, as the
+	 * cache is just one value deep. Should we return the last
+	 * written value? Just avoid this by always reading the FIFO
+	 * even when using cache. Cache only will not work.
+	 */
+	if (!map->cache_bypass && map->cache_only) {
+		ret = -EBUSY;
+		goto out_unlock;
+	}
+
 	/* Use the accelerated operation if we can */
 	if (map->bus->reg_noinc_read) {
-		/*
-		 * We have not defined the FIFO semantics for cache, as the
-		 * cache is just one value deep. Should we return the last
-		 * written value? Just avoid this by always reading the FIFO
-		 * even when using cache. Cache only will not work.
-		 */
-		if (map->cache_only) {
-			ret = -EBUSY;
-			goto out_unlock;
-		}
 		ret = regmap_noinc_readwrite(map, reg, val, val_len, false);
 		goto out_unlock;
 	}
@@ -3273,7 +3279,7 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg,
 		tmp = orig & ~mask;
 		tmp |= val & mask;
 
-		if (force_write || (tmp != orig)) {
+		if (force_write || (tmp != orig) || map->force_write_field) {
 			ret = _regmap_write(map, reg, tmp);
 			if (ret == 0 && change)
 				*change = true;
diff --git a/drivers/gpio/gpio-104-dio-48e.c b/drivers/gpio/gpio-104-dio-48e.c
index f2253fd5ab4b..8ff5f4ff5958 100644
--- a/drivers/gpio/gpio-104-dio-48e.c
+++ b/drivers/gpio/gpio-104-dio-48e.c
@@ -100,13 +100,23 @@ static const struct regmap_irq dio48e_regmap_irqs[] = {
 	DIO48E_REGMAP_IRQ(0), DIO48E_REGMAP_IRQ(1),
 };
 
-static int dio48e_handle_mask_sync(struct regmap *const map, const int index,
+/**
+ * struct dio48e_gpio - GPIO device private data structure
+ * @map:	Regmap for the device
+ * @irq_mask:	Current IRQ mask state on the device
+ */
+struct dio48e_gpio {
+	struct regmap *map;
+	unsigned int irq_mask;
+};
+
+static int dio48e_handle_mask_sync(const int index,
 				   const unsigned int mask_buf_def,
 				   const unsigned int mask_buf,
 				   void *const irq_drv_data)
 {
-	unsigned int *const irq_mask = irq_drv_data;
-	const unsigned int prev_mask = *irq_mask;
+	struct dio48e_gpio *const dio48egpio = irq_drv_data;
+	const unsigned int prev_mask = dio48egpio->irq_mask;
 	int err;
 	unsigned int val;
 
@@ -115,19 +125,19 @@ static int dio48e_handle_mask_sync(struct regmap *const map, const int index,
 		return 0;
 
 	/* remember the current mask for the next mask sync */
-	*irq_mask = mask_buf;
+	dio48egpio->irq_mask = mask_buf;
 
 	/* if all previously masked, enable interrupts when unmasking */
 	if (prev_mask == mask_buf_def) {
-		err = regmap_write(map, DIO48E_CLEAR_INTERRUPT, 0x00);
+		err = regmap_write(dio48egpio->map, DIO48E_CLEAR_INTERRUPT, 0x00);
 		if (err)
 			return err;
-		return regmap_write(map, DIO48E_ENABLE_INTERRUPT, 0x00);
+		return regmap_write(dio48egpio->map, DIO48E_ENABLE_INTERRUPT, 0x00);
 	}
 
 	/* if all are currently masked, disable interrupts */
 	if (mask_buf == mask_buf_def)
-		return regmap_read(map, DIO48E_DISABLE_INTERRUPT, &val);
+		return regmap_read(dio48egpio->map, DIO48E_DISABLE_INTERRUPT, &val);
 
 	return 0;
 }
@@ -168,7 +178,7 @@ static int dio48e_probe(struct device *dev, unsigned int id)
 	struct regmap *map;
 	int err;
 	struct regmap_irq_chip *chip;
-	unsigned int irq_mask;
+	struct dio48e_gpio *dio48egpio;
 	struct regmap_irq_chip_data *chip_data;
 
 	if (!devm_request_region(dev, base[id], DIO48E_EXTENT, name)) {
@@ -186,12 +196,14 @@ static int dio48e_probe(struct device *dev, unsigned int id)
 		return dev_err_probe(dev, PTR_ERR(map),
 				     "Unable to initialize register map\n");
 
-	chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
-	if (!chip)
+	dio48egpio = devm_kzalloc(dev, sizeof(*dio48egpio), GFP_KERNEL);
+	if (!dio48egpio)
 		return -ENOMEM;
 
-	chip->irq_drv_data = devm_kzalloc(dev, sizeof(irq_mask), GFP_KERNEL);
-	if (!chip->irq_drv_data)
+	dio48egpio->map = map;
+
+	chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
 		return -ENOMEM;
 
 	chip->name = name;
@@ -202,6 +214,7 @@ static int dio48e_probe(struct device *dev, unsigned int id)
 	chip->irqs = dio48e_regmap_irqs;
 	chip->num_irqs = ARRAY_SIZE(dio48e_regmap_irqs);
 	chip->handle_mask_sync = dio48e_handle_mask_sync;
+	chip->irq_drv_data = dio48egpio;
 
 	/* Initialize to prevent spurious interrupts before we're ready */
 	err = dio48e_irq_init_hw(map);
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index c2b9cc5db824..8fc0b3ebce44 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -1528,9 +1528,6 @@ struct regmap_irq_chip_data;
  *		     status_base. Should contain num_regs arrays.
  *		     Can be provided for chips with more complex mapping than
  *		     1.st bit to 1.st sub-reg, 2.nd bit to 2.nd sub-reg, ...
- *		     When used with not_fixed_stride, each one-element array
- *		     member contains offset calculated as address from each
- *		     peripheral to first peripheral.
  * @num_main_regs: Number of 'main status' irq registers for chips which have
  *		   main_status set.
  *
@@ -1542,10 +1539,6 @@ struct regmap_irq_chip_data;
  * @ack_base:    Base ack address. If zero then the chip is clear on read.
  *               Using zero value is possible with @use_ack bit.
  * @wake_base:   Base address for wake enables.  If zero unsupported.
- * @type_base:   Base address for irq type.  If zero unsupported.  Deprecated,
- *		 use @config_base instead.
- * @virt_reg_base:   Base addresses for extra config regs. Deprecated, use
- *		     @config_base instead.
  * @config_base: Base address for IRQ type config regs. If null unsupported.
  * @irq_reg_stride:  Stride to use for chips where registers are not contiguous.
  * @init_ack_masked: Ack all masked interrupts once during initalization.
@@ -1571,11 +1564,6 @@ struct regmap_irq_chip_data;
  *                   registers before unmasking interrupts to clear any bits
  *                   set when they were masked.
  * @runtime_pm:  Hold a runtime PM lock on the device when accessing it.
- * @not_fixed_stride: Used when chip peripherals are not laid out with fixed
- *		      stride. Must be used with sub_reg_offsets containing the
- *		      offsets to each peripheral. Deprecated; the same thing
- *		      can be accomplished with a @get_irq_reg callback, without
- *		      the need for a @sub_reg_offsets table.
  * @no_status: No status register: all interrupts assumed generated by device.
  *
  * @num_regs:    Number of registers in each control bank.
@@ -1583,12 +1571,6 @@ struct regmap_irq_chip_data;
  * @irqs:        Descriptors for individual IRQs.  Interrupt numbers are
  *               assigned based on the index in the array of the interrupt.
  * @num_irqs:    Number of descriptors.
- *
- * @num_type_reg:    Number of type registers. Deprecated, use config registers
- *		     instead.
- * @num_virt_regs:   Number of non-standard irq configuration registers.
- *		     If zero unsupported. Deprecated, use config registers
- *		     instead.
  * @num_config_bases:	Number of config base registers.
  * @num_config_regs:	Number of config registers for each config base register.
  *
@@ -1598,15 +1580,12 @@ struct regmap_irq_chip_data;
  *		     after handling the interrupts in regmap_irq_handler().
  * @handle_mask_sync: Callback used to handle IRQ mask syncs. The index will be
  *		      in the range [0, num_regs)
- * @set_type_virt:   Driver specific callback to extend regmap_irq_set_type()
- *		     and configure virt regs. Deprecated, use @set_type_config
- *		     callback and config registers instead.
  * @set_type_config: Callback used for configuring irq types.
  * @get_irq_reg: Callback for mapping (base register, index) pairs to register
  *		 addresses. The base register will be one of @status_base,
  *		 @mask_base, etc., @main_status, or any of @config_base.
  *		 The index will be in the range [0, num_main_regs[ for the
- *		 main status base, [0, num_type_settings[ for any config
+ *		 main status base, [0, num_config_regs[ for any config
  *		 register base, and [0, num_regs[ for any other base.
  *		 If unspecified then regmap_irq_get_irq_reg_linear() is used.
  * @irq_drv_data:    Driver specific IRQ data which is passed as parameter when
@@ -1629,8 +1608,6 @@ struct regmap_irq_chip {
 	unsigned int unmask_base;
 	unsigned int ack_base;
 	unsigned int wake_base;
-	unsigned int type_base;
-	unsigned int *virt_reg_base;
 	const unsigned int *config_base;
 	unsigned int irq_reg_stride;
 	unsigned int init_ack_masked:1;
@@ -1643,7 +1620,6 @@ struct regmap_irq_chip {
 	unsigned int type_in_mask:1;
 	unsigned int clear_on_unmask:1;
 	unsigned int runtime_pm:1;
-	unsigned int not_fixed_stride:1;
 	unsigned int no_status:1;
 
 	int num_regs;
@@ -1651,18 +1627,13 @@ struct regmap_irq_chip {
 	const struct regmap_irq *irqs;
 	int num_irqs;
 
-	int num_type_reg;
-	int num_virt_regs;
 	int num_config_bases;
 	int num_config_regs;
 
 	int (*handle_pre_irq)(void *irq_drv_data);
 	int (*handle_post_irq)(void *irq_drv_data);
-	int (*handle_mask_sync)(struct regmap *map, int index,
-				unsigned int mask_buf_def,
+	int (*handle_mask_sync)(int index, unsigned int mask_buf_def,
 				unsigned int mask_buf, void *irq_drv_data);
-	int (*set_type_virt)(unsigned int **buf, unsigned int type,
-			     unsigned long hwirq, int reg);
 	int (*set_type_config)(unsigned int **buf, unsigned int type,
 			       const struct regmap_irq *irq_data, int idx,
 			       void *irq_drv_data);