pinctrl: renesas: r8a779a0: Add I2C pins, groups and functions

This patch adds I2C0-6 pins, groups and functions to the R8A779A0 (V3U)
SoC.

Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20210112165929.31002-2-uli+renesas@fpond.eu
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/pinctrl/renesas/pfc-r8a779a0.c

@@ -1233,6 +1233,69 @@ static const struct sh_pfc_pin pinmux_pins[] = {
 	PINMUX_GPIO_GP_ALL(),
 };
 
+/* - I2C0 ------------------------------------------------------------------- */
+static const unsigned int i2c0_pins[] = {
+	/* SDA0, SCL0 */
+	RCAR_GP_PIN(2, 3), RCAR_GP_PIN(2, 2),
+};
+static const unsigned int i2c0_mux[] = {
+	SDA0_MARK, SCL0_MARK,
+};
+
+/* - I2C1 ------------------------------------------------------------------- */
+static const unsigned int i2c1_pins[] = {
+	/* SDA1, SCL1 */
+	RCAR_GP_PIN(2, 5), RCAR_GP_PIN(2, 4),
+};
+static const unsigned int i2c1_mux[] = {
+	SDA1_MARK, SCL1_MARK,
+};
+
+/* - I2C2 ------------------------------------------------------------------- */
+static const unsigned int i2c2_pins[] = {
+	/* SDA2, SCL2 */
+	RCAR_GP_PIN(2, 7), RCAR_GP_PIN(2, 6),
+};
+static const unsigned int i2c2_mux[] = {
+	SDA2_MARK, SCL2_MARK,
+};
+
+/* - I2C3 ------------------------------------------------------------------- */
+static const unsigned int i2c3_pins[] = {
+	/* SDA3, SCL3 */
+	RCAR_GP_PIN(2, 9), RCAR_GP_PIN(2, 8),
+};
+static const unsigned int i2c3_mux[] = {
+	SDA3_MARK, SCL3_MARK,
+};
+
+/* - I2C4 ------------------------------------------------------------------- */
+static const unsigned int i2c4_pins[] = {
+	/* SDA4, SCL4 */
+	RCAR_GP_PIN(2, 11), RCAR_GP_PIN(2, 10),
+};
+static const unsigned int i2c4_mux[] = {
+	SDA4_MARK, SCL4_MARK,
+};
+
+/* - I2C5 ------------------------------------------------------------------- */
+static const unsigned int i2c5_pins[] = {
+	/* SDA5, SCL5 */
+	RCAR_GP_PIN(2, 13), RCAR_GP_PIN(2, 12),
+};
+static const unsigned int i2c5_mux[] = {
+	SDA5_MARK, SCL5_MARK,
+};
+
+/* - I2C6 ------------------------------------------------------------------- */
+static const unsigned int i2c6_pins[] = {
+	/* SDA6, SCL6 */
+	RCAR_GP_PIN(2, 15), RCAR_GP_PIN(2, 14),
+};
+static const unsigned int i2c6_mux[] = {
+	SDA6_MARK, SCL6_MARK,
+};
+
 /* - SCIF0 ------------------------------------------------------------------ */
 static const unsigned int scif0_data_pins[] = {
 	/* RX0, TX0 */
@@ -1342,6 +1405,14 @@ static const unsigned int scif_clk_mux[] = {
 };
 
 static const struct sh_pfc_pin_group pinmux_groups[] = {
+	SH_PFC_PIN_GROUP(i2c0),
+	SH_PFC_PIN_GROUP(i2c1),
+	SH_PFC_PIN_GROUP(i2c2),
+	SH_PFC_PIN_GROUP(i2c3),
+	SH_PFC_PIN_GROUP(i2c4),
+	SH_PFC_PIN_GROUP(i2c5),
+	SH_PFC_PIN_GROUP(i2c6),
+
 	SH_PFC_PIN_GROUP(scif0_data),
 	SH_PFC_PIN_GROUP(scif0_clk),
 	SH_PFC_PIN_GROUP(scif0_ctrl),
@@ -1358,6 +1429,34 @@ static const struct sh_pfc_pin_group pinmux_groups[] = {
 	SH_PFC_PIN_GROUP(scif_clk),
 };
 
+static const char * const i2c0_groups[] = {
+	"i2c0",
+};
+
+static const char * const i2c1_groups[] = {
+	"i2c1",
+};
+
+static const char * const i2c2_groups[] = {
+	"i2c2",
+};
+
+static const char * const i2c3_groups[] = {
+	"i2c3",
+};
+
+static const char * const i2c4_groups[] = {
+	"i2c4",
+};
+
+static const char * const i2c5_groups[] = {
+	"i2c5",
+};
+
+static const char * const i2c6_groups[] = {
+	"i2c6",
+};
+
 static const char * const scif0_groups[] = {
 	"scif0_data",
 	"scif0_clk",
@@ -1388,6 +1487,14 @@ static const char * const scif_clk_groups[] = {
 };
 
 static const struct sh_pfc_function pinmux_functions[] = {
+	SH_PFC_FUNCTION(i2c0),
+	SH_PFC_FUNCTION(i2c1),
+	SH_PFC_FUNCTION(i2c2),
+	SH_PFC_FUNCTION(i2c3),
+	SH_PFC_FUNCTION(i2c4),
+	SH_PFC_FUNCTION(i2c5),
+	SH_PFC_FUNCTION(i2c6),
+
 	SH_PFC_FUNCTION(scif0),
 	SH_PFC_FUNCTION(scif1),
 	SH_PFC_FUNCTION(scif3),