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mtd: rawnand: intel: Read the chip-select line from the correct OF node

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The chip select has to be read from the flash node which is a child node
of the NAND controller.

Fixes: 0b1039f016 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220702231227.1579176-4-martin.blumenstingl@googlemail.com
This commit is contained in:
Martin Blumenstingl 2022-07-03 01:12:22 +02:00 committed by Miquel Raynal
parent 9fac2a193e
commit bfc618fcc3
1 changed files with 9 additions and 2 deletions
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11
drivers/mtd/nand/raw/intel-nand-controller.c
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@ -16,6 +16,7 @@
#include <linux/mtd/rawnand.h>
#include <linux/mtd/nand.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/slab.h>
@ -580,6 +581,7 @@ static int ebu_nand_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct ebu_nand_controller *ebu_host;
struct device_node *chip_np;
struct nand_chip *nand;
struct mtd_info *mtd;
struct resource *res;
@ -604,7 +606,12 @@ static int ebu_nand_probe(struct platform_device *pdev)
if (IS_ERR(ebu_host->hsnand))
return PTR_ERR(ebu_host->hsnand);
ret = device_property_read_u32(dev, "reg", &cs);
chip_np = of_get_next_child(dev->of_node, NULL);
if (!chip_np)
return dev_err_probe(dev, -EINVAL,
"Could not find child node for the NAND chip\n");
ret = of_property_read_u32(chip_np, "reg", &cs);
if (ret) {
dev_err(dev, "failed to get chip select: %d\n", ret);
return ret;
@ -660,7 +667,7 @@ static int ebu_nand_probe(struct platform_device *pdev)
writel(ebu_host->cs[cs].addr_sel | EBU_ADDR_MASK(5) | EBU_ADDR_SEL_REGEN,
ebu_host->ebu + EBU_ADDR_SEL(cs));
nand_set_flash_node(&ebu_host->chip, dev->of_node);
nand_set_flash_node(&ebu_host->chip, chip_np);
mtd = nand_to_mtd(&ebu_host->chip);
if (!mtd->name) {