pinctrl: renesas: Initial R8A779A0 (V3U) PFC support

This patch adds initial pinctrl support for the R8A779A0 (V3U) SoC,
including bias, drive strength and voltage control.

Based on patch by LUU HOAI <hoai.luu.ub@renesas.com>.
Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20210112165912.30876-5-uli+renesas@fpond.euSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/pinctrl/renesas/Kconfig

@@ -36,6 +36,7 @@ config PINCTRL_RENESAS
 	select PINCTRL_PFC_R8A77980 if ARCH_R8A77980
 	select PINCTRL_PFC_R8A77990 if ARCH_R8A77990
 	select PINCTRL_PFC_R8A77995 if ARCH_R8A77995
+	select PINCTRL_PFC_R8A779A0 if ARCH_R8A779A0
 	select PINCTRL_PFC_SH7203 if CPU_SUBTYPE_SH7203
 	select PINCTRL_PFC_SH7264 if CPU_SUBTYPE_SH7264
 	select PINCTRL_PFC_SH7269 if CPU_SUBTYPE_SH7269
@@ -142,6 +143,10 @@ config PINCTRL_PFC_R8A77970
 	bool "pin control support for R-Car V3M" if COMPILE_TEST
 	select PINCTRL_SH_PFC
 
+config PINCTRL_PFC_R8A779A0
+	bool "pin control support for R-Car V3U" 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

@@ -29,6 +29,7 @@ obj-$(CONFIG_PINCTRL_PFC_R8A77970)	+= pfc-r8a77970.o
 obj-$(CONFIG_PINCTRL_PFC_R8A77980)	+= pfc-r8a77980.o
 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_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

@@ -646,6 +646,12 @@ static const struct of_device_id sh_pfc_of_table[] = {
 		.data = &r8a77995_pinmux_info,
 	},
 #endif
+#ifdef CONFIG_PINCTRL_PFC_R8A779A0
+	{
+		.compatible = "renesas,pfc-r8a779a0",
+		.data = &r8a779a0_pinmux_info,
+	},
+#endif
 #ifdef CONFIG_PINCTRL_PFC_SH73A0
 	{
 		.compatible = "renesas,pfc-sh73a0",

drivers/pinctrl/renesas/sh_pfc.h

@@ -340,6 +340,7 @@ extern const struct sh_pfc_soc_info r8a77970_pinmux_info;
 extern const struct sh_pfc_soc_info r8a77980_pinmux_info;
 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 sh7203_pinmux_info;
 extern const struct sh_pfc_soc_info sh7264_pinmux_info;
 extern const struct sh_pfc_soc_info sh7269_pinmux_info;