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The new ARMv8 SoC, PH1-LD20, supports more fine-grained drive
strength control. Drive strength of some pins are controlled by
3-bit width registers (8-level granularity).
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The new ARMv8 SoC, PH1-LD20, supports more fine-grained drive
strength control. Some of the configuration registers on it have
3-bit width.
The feature will be supported in the next commit, but a problem is
that macro names are getting longer and longer in the current naming
scheme.
Before moving forward, this commit renames macros as follows:
UNIPHIER_PIN_DRV_4_8 -> UNIPHIER_PIN_DRV_1BIT
UNIPHIER_PIN_DRV_8_12_16_20 -> UNIPHIER_PIN_DRV_2BIT
UNIPHIER_PIN_DRV_FIXED_4 -> UNIPHIER_PIN_DRV_FIXED4
UNIPHIER_PIN_DRV_FIXED_5 -> UNIPHIER_PIN_DRV_FIXED5
UNIPHIER_PIN_DRV_FIXED_8 -> UNIPHIER_PIN_DRV_FIXED8
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Currently, every SoC driver defines struct pinctrl_desc statically,
i.e. it consumes memory footprint even if it is not probed.
In multi-platform, many pinctrl drivers are linked (generally as
built-in objects), although only one of them is actually used.
So, it is reasonable to allocate memory dynamically where possible.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use devm_pinctrl_register() for pin control registration and remove
need of .remove callback.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The core support for the pinctrl drivers for all the UniPhier SoCs.
Changes in v2:
- drop vogus THIS_MODULE because this file is always built-in
- drop vogus "include <linux/module.h> because this file is
always built-in
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
