pinctrl: renesas: Initial R8A779G0 (R-Car V4H) PFC support

This patch adds initial pinctrl support for the R-Car V4H (R8A779G0)
SoC, including bias, drive strength and voltage control.

This patch was created based on the Rev.0.51 datasheet.
Signed-off-by: LUU HOAI <hoai.luu.ub@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
[Morimoto: merge Kihara-san's MODSEL8 fixup patch, cleanup white space, care about reserved bits on each configs, fixup comments, etc.]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87czepty0j.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/pinctrl/renesas/Kconfig

@@ -38,6 +38,7 @@ config PINCTRL_RENESAS
 	select PINCTRL_PFC_R8A77995 if ARCH_R8A77995
 	select PINCTRL_PFC_R8A779A0 if ARCH_R8A779A0
 	select PINCTRL_PFC_R8A779F0 if ARCH_R8A779F0
+	select PINCTRL_PFC_R8A779G0 if ARCH_R8A779G0
 	select PINCTRL_RZG2L if ARCH_RZG2L
 	select PINCTRL_RZV2M if ARCH_R9A09G011
 	select PINCTRL_PFC_SH7203 if CPU_SUBTYPE_SH7203
@@ -154,6 +155,10 @@ config PINCTRL_PFC_R8A779A0
 	bool "pin control support for R-Car V3U" if COMPILE_TEST
 	select PINCTRL_SH_PFC
 
+config PINCTRL_PFC_R8A779G0
+	bool "pin control support for R-Car V4H" if COMPILE_TEST
+	select PINCTRL_SH_PFC
+
 config PINCTRL_PFC_R8A7740
 	bool "pin control support for R-Mobile A1" if COMPILE_TEST
 	select PINCTRL_SH_PFC_GPIO

drivers/pinctrl/renesas/Makefile

@@ -31,6 +31,7 @@ obj-$(CONFIG_PINCTRL_PFC_R8A77990)	+= pfc-r8a77990.o
 obj-$(CONFIG_PINCTRL_PFC_R8A77995)	+= pfc-r8a77995.o
 obj-$(CONFIG_PINCTRL_PFC_R8A779A0)	+= pfc-r8a779a0.o
 obj-$(CONFIG_PINCTRL_PFC_R8A779F0)	+= pfc-r8a779f0.o
+obj-$(CONFIG_PINCTRL_PFC_R8A779G0)	+= pfc-r8a779g0.o
 obj-$(CONFIG_PINCTRL_PFC_SH7203)	+= pfc-sh7203.o
 obj-$(CONFIG_PINCTRL_PFC_SH7264)	+= pfc-sh7264.o
 obj-$(CONFIG_PINCTRL_PFC_SH7269)	+= pfc-sh7269.o

drivers/pinctrl/renesas/core.c

@@ -644,6 +644,12 @@ static const struct of_device_id sh_pfc_of_table[] = {
 		.data = &r8a779f0_pinmux_info,
 	},
 #endif
+#ifdef CONFIG_PINCTRL_PFC_R8A779G0
+	{
+		.compatible = "renesas,pfc-r8a779g0",
+		.data = &r8a779g0_pinmux_info,
+	},
+#endif
 #ifdef CONFIG_PINCTRL_PFC_SH73A0
 	{
 		.compatible = "renesas,pfc-sh73a0",

drivers/pinctrl/renesas/sh_pfc.h

@@ -325,6 +325,7 @@ extern const struct sh_pfc_soc_info r8a77990_pinmux_info;
 extern const struct sh_pfc_soc_info r8a77995_pinmux_info;
 extern const struct sh_pfc_soc_info r8a779a0_pinmux_info;
 extern const struct sh_pfc_soc_info r8a779f0_pinmux_info;
+extern const struct sh_pfc_soc_info r8a779g0_pinmux_info;
 extern const struct sh_pfc_soc_info sh7203_pinmux_info;
 extern const struct sh_pfc_soc_info sh7264_pinmux_info;
 extern const struct sh_pfc_soc_info sh7269_pinmux_info;