pinctrl: renesas: r8a779f0: Add QSPI pins, groups, and functions

Add pins, groups, and functions for the Quad SPI Controllers on the
Renesas R-Car S4-8 (R8A779F0) SoC.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/cd7f7feeabebf268adc9e050e348230e93b40829.1645457792.git.geert+renesas@glider.be

drivers/pinctrl/renesas/pfc-r8a779f0.c

@@ -917,6 +917,42 @@ static const unsigned int pcie1_clkreq_n_mux[] = {
 	PCIE1_CLKREQ_N_MARK,
 };
 
+/* - QSPI0 ------------------------------------------------------------------ */
+static const unsigned int qspi0_ctrl_pins[] = {
+	/* SPCLK, SSL */
+	RCAR_GP_PIN(2, 10), RCAR_GP_PIN(2, 13),
+};
+static const unsigned int qspi0_ctrl_mux[] = {
+	QSPI0_SPCLK_MARK, QSPI0_SSL_MARK,
+};
+static const unsigned int qspi0_data_pins[] = {
+	/* MOSI_IO0, MISO_IO1, IO2, IO3 */
+	RCAR_GP_PIN(2, 9), RCAR_GP_PIN(2, 12),
+	RCAR_GP_PIN(2, 11), RCAR_GP_PIN(2, 14),
+};
+static const unsigned int qspi0_data_mux[] = {
+	QSPI0_MOSI_IO0_MARK, QSPI0_MISO_IO1_MARK,
+	QSPI0_IO2_MARK, QSPI0_IO3_MARK
+};
+
+/* - QSPI1 ------------------------------------------------------------------ */
+static const unsigned int qspi1_ctrl_pins[] = {
+	/* SPCLK, SSL */
+	RCAR_GP_PIN(2, 8), RCAR_GP_PIN(2, 3),
+};
+static const unsigned int qspi1_ctrl_mux[] = {
+	QSPI1_SPCLK_MARK, QSPI1_SSL_MARK,
+};
+static const unsigned int qspi1_data_pins[] = {
+	/* MOSI_IO0, MISO_IO1, IO2, IO3 */
+	RCAR_GP_PIN(2, 7), RCAR_GP_PIN(2, 5),
+	RCAR_GP_PIN(2, 6), RCAR_GP_PIN(2, 4),
+};
+static const unsigned int qspi1_data_mux[] = {
+	QSPI1_MOSI_IO0_MARK, QSPI1_MISO_IO1_MARK,
+	QSPI1_IO2_MARK, QSPI1_IO3_MARK
+};
+
 /* - SCIF0 ------------------------------------------------------------------ */
 static const unsigned int scif0_data_pins[] = {
 	/* RX0, TX0 */
@@ -1076,6 +1112,12 @@ static const struct sh_pfc_pin_group pinmux_groups[] = {
 	SH_PFC_PIN_GROUP(msiof3_rxd),
 	SH_PFC_PIN_GROUP(pcie0_clkreq_n),
 	SH_PFC_PIN_GROUP(pcie1_clkreq_n),
+	SH_PFC_PIN_GROUP(qspi0_ctrl),
+	BUS_DATA_PIN_GROUP(qspi0_data, 2),
+	BUS_DATA_PIN_GROUP(qspi0_data, 4),
+	SH_PFC_PIN_GROUP(qspi1_ctrl),
+	BUS_DATA_PIN_GROUP(qspi1_data, 2),
+	BUS_DATA_PIN_GROUP(qspi1_data, 4),
 	SH_PFC_PIN_GROUP(scif0_data),
 	SH_PFC_PIN_GROUP(scif0_clk),
 	SH_PFC_PIN_GROUP(scif0_ctrl),
@@ -1199,6 +1241,18 @@ static const char * const pcie_groups[] = {
 	"pcie1_clkreq_n",
 };
 
+static const char * const qspi0_groups[] = {
+	"qspi0_ctrl",
+	"qspi0_data2",
+	"qspi0_data4",
+};
+
+static const char * const qspi1_groups[] = {
+	"qspi1_ctrl",
+	"qspi1_data2",
+	"qspi1_data4",
+};
+
 static const char * const scif0_groups[] = {
 	"scif0_data",
 	"scif0_clk",
@@ -1245,6 +1299,8 @@ static const struct sh_pfc_function pinmux_functions[] = {
 	SH_PFC_FUNCTION(msiof2),
 	SH_PFC_FUNCTION(msiof3),
 	SH_PFC_FUNCTION(pcie),
+	SH_PFC_FUNCTION(qspi0),
+	SH_PFC_FUNCTION(qspi1),
 	SH_PFC_FUNCTION(scif0),
 	SH_PFC_FUNCTION(scif1),
 	SH_PFC_FUNCTION(scif3),