pinctrl: renesas: r8a779g0: Add Audio Clock pins, groups, and functions

Add pins, groups, and functions for the Audio Clock on the Renesas R-Car
V4H (R8A779G0) SoC.
Signed-off-by: Linh Phung <linh.phung.jy@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/87cz6sanga.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/pinctrl/renesas/pfc-r8a779g0.c

@@ -1196,6 +1196,22 @@ static const struct sh_pfc_pin pinmux_pins[] = {
 	PINMUX_GPIO_GP_ALL(),
 };
 
+/* - AUDIO CLOCK ----------------------------------------- */
+static const unsigned int audio_clkin_pins[] = {
+	/* CLK IN */
+	RCAR_GP_PIN(1, 22),
+};
+static const unsigned int audio_clkin_mux[] = {
+	AUDIO_CLKIN_MARK,
+};
+static const unsigned int audio_clkout_pins[] = {
+	/* CLK OUT */
+	RCAR_GP_PIN(1, 21),
+};
+static const unsigned int audio_clkout_mux[] = {
+	AUDIO_CLKOUT_MARK,
+};
+
 /* - AVB0 ------------------------------------------------ */
 static const unsigned int avb0_link_pins[] = {
 	/* AVB0_LINK */
@@ -2461,6 +2477,9 @@ static const unsigned int tsn0_avtp_match_mux[] = {
 };
 
 static const struct sh_pfc_pin_group pinmux_groups[] = {
+	SH_PFC_PIN_GROUP(audio_clkin),
+	SH_PFC_PIN_GROUP(audio_clkout),
+
 	SH_PFC_PIN_GROUP(avb0_link),
 	SH_PFC_PIN_GROUP(avb0_magic),
 	SH_PFC_PIN_GROUP(avb0_phy_int),
@@ -2640,6 +2659,11 @@ static const struct sh_pfc_pin_group pinmux_groups[] = {
 	SH_PFC_PIN_GROUP(tsn0_avtp_match),
 };
 
+static const char * const audio_clk_groups[] = {
+	"audio_clkin",
+	"audio_clkout",
+};
+
 static const char * const avb0_groups[] = {
 	"avb0_link",
 	"avb0_magic",
@@ -2957,6 +2981,8 @@ static const char * const tsn0_groups[] = {
 };
 
 static const struct sh_pfc_function pinmux_functions[] = {
+	SH_PFC_FUNCTION(audio_clk),
+
 	SH_PFC_FUNCTION(avb0),
 	SH_PFC_FUNCTION(avb1),
 	SH_PFC_FUNCTION(avb2),