ARM: dts: rockchip: Add SFC for RK3128

Add the Serial Flash Controller and it's pincontrols.
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Link: https://lore.kernel.org/r/20240606143401.32454-7-knaerzche@gmail.com
[reference HCLK_SFC by its numeric id to prevent conflicts with the
 clock binding/controller changes]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rockchip/rk3128.dtsi

@@ -425,6 +425,15 @@ spdif: spdif@10204000 {
 		status = "disabled";
 	};
 
+	sfc: spi@1020c000 {
+		compatible = "rockchip,sfc";
+		reg = <0x1020c000 0x8000>;
+		interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru SCLK_SFC>, <&cru 479>;
+		clock-names = "clk_sfc", "hclk_sfc";
+		status = "disabled";
+	};
+
 	sdmmc: mmc@10214000 {
 		compatible = "rockchip,rk3128-dw-mshc", "rockchip,rk3288-dw-mshc";
 		reg = <0x10214000 0x4000>;
@@ -1196,6 +1205,32 @@ sdmmc_bus4: sdmmc-bus4 {
 			};
 		};
 
+		sfc {
+			sfc_bus2: sfc-bus2 {
+				rockchip,pins = <1 RK_PD0 3 &pcfg_pull_default>,
+						<1 RK_PD1 3 &pcfg_pull_default>;
+			};
+
+			sfc_bus4: sfc-bus4 {
+				rockchip,pins = <1 RK_PD0 3 &pcfg_pull_default>,
+						<1 RK_PD1 3 &pcfg_pull_default>,
+						<1 RK_PD2 3 &pcfg_pull_default>,
+						<1 RK_PD3 3 &pcfg_pull_default>;
+			};
+
+			sfc_clk: sfc-clk {
+				rockchip,pins = <2 RK_PA4 3 &pcfg_pull_none>;
+			};
+
+			sfc_cs0: sfc-cs0 {
+				rockchip,pins = <2 RK_PA2 2 &pcfg_pull_default>;
+			};
+
+			sfc_cs1: sfc-cs1 {
+				rockchip,pins = <2 RK_PA3 2 &pcfg_pull_default>;
+			};
+		};
+
 		spdif {
 			spdif_tx: spdif-tx {
 				rockchip,pins = <3 RK_PD3 1 &pcfg_pull_none>;