ramips: make SoC dtsi compatible with upstream mmc-mtk driver

Add all essential MTK SDHC properties to support the new mmc-mtk
driver. Since this driver relies on power regulators, we also
need to enable this feature for MT7620, just like MT762{1,8}.

Signed-off-by: Shiji Yang <[email protected]>
Co-authored-by: John Thomson <[email protected]>

target/linux/ramips/dts/mt7620a.dtsi

@@ -32,6 +32,35 @@
 		compatible = "mti,cpu-interrupt-controller";
 	};
 
+	mmc_clk: mmc-clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <48000000>;
+		clock-accuracy = <100>;
+	};
+
+	mmc_reg_1v8: regulator-1v8 {
+		compatible = "regulator-fixed";
+
+		enable-active-high;
+
+		regulator-always-on;
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "mmc_io";
+	};
+
+	mmc_reg_3v3: regulator-3v3 {
+		compatible = "regulator-fixed";
+
+		enable-active-high;
+
+		regulator-always-on;
+		regulator-max-microvolt = <3300000>;
+		regulator-min-microvolt = <3300000>;
+		regulator-name = "mmc_power";
+	};
+
 	palmbus: palmbus@10000000 {
 		compatible = "palmbus";
 		reg = <0x10000000 0x200000>;
@@ -493,15 +522,34 @@
 		interrupts = <17>;
 	};
 
-	sdhci: sdhci@10130000 {
-		compatible = "ralink,mt7620-sdhci";
+	sdhci: mmc@10130000 {
+		compatible = "mediatek,mt7620-mmc", "ralink,mt7620-sdhci";
 		reg = <0x10130000 0x4000>;
 
+		bus-width = <4>;
+
+		cap-mmc-highspeed;
+		cap-sd-highspeed;
+
+		clocks = <&mmc_clk>, <&mmc_clk>;
+		clock-names = "source", "hclk";
+
+		disable-wp;
+
 		interrupt-parent = <&intc>;
 		interrupts = <14>;
 
-		pinctrl-names = "default";
+		max-frequency = <48000000>;
+
+		pinctrl-names = "default", "state_uhs";
 		pinctrl-0 = <&sdhci_pins>;
+		pinctrl-1 = <&sdhci_pins>;
+
+		resets = <&sysc 30>;
+		reset-names = "hrst";
+
+		vmmc-supply = <&mmc_reg_3v3>;
+		vqmmc-supply = <&mmc_reg_1v8>;
 
 		status = "disabled";
 	};

target/linux/ramips/dts/mt7621.dtsi

@@ -42,6 +42,28 @@
 		bootargs = "console=ttyS0,57600";
 	};
 
+	mmc_reg_1v8: regulator-1v8 {
+		compatible = "regulator-fixed";
+
+		enable-active-high;
+
+		regulator-always-on;
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "mmc_io";
+	};
+
+	mmc_reg_3v3: regulator-3v3 {
+		compatible = "regulator-fixed";
+
+		enable-active-high;
+
+		regulator-always-on;
+		regulator-max-microvolt = <3300000>;
+		regulator-min-microvolt = <3300000>;
+		regulator-name = "mmc_power";
+	};
+
 	palmbus: palmbus@1e000000 {
 		compatible = "palmbus";
 		reg = <0x1e000000 0x100000>;
@@ -326,17 +348,36 @@
 		};
 	};
 
-	sdhci: sdhci@1e130000 {
-		status = "disabled";
-
-		compatible = "ralink,mt7620-sdhci";
+	sdhci: mmc@1e130000 {
+		compatible = "mediatek,mt7620-mmc", "ralink,mt7620-sdhci";
 		reg = <0x1e130000 0x4000>;
 
+		bus-width = <4>;
+
+		cap-mmc-highspeed;
+		cap-sd-highspeed;
+
+		clocks = <&sysc MT7621_CLK_SHXC>, <&sysc MT7621_CLK_SHXC>;
+		clock-names = "source", "hclk";
+
+		disable-wp;
+
 		interrupt-parent = <&gic>;
 		interrupts = <GIC_SHARED 20 IRQ_TYPE_LEVEL_HIGH>;
 
-		pinctrl-names = "default";
+		max-frequency = <50000000>;
+
+		pinctrl-names = "default", "state_uhs";
 		pinctrl-0 = <&sdhci_pins>;
+		pinctrl-1 = <&sdhci_pins>;
+
+		resets = <&sysc MT7621_RST_SDXC>;
+		reset-names = "hrst";
+
+		vmmc-supply = <&mmc_reg_3v3>;
+		vqmmc-supply = <&mmc_reg_1v8>;
+
+		status = "disabled";
 	};
 
 	xhci: xhci@1e1c0000 {

target/linux/ramips/dts/mt7628an.dtsi

@@ -30,6 +30,35 @@
 		compatible = "mti,cpu-interrupt-controller";
 	};
 
+	mmc_clk: mmc-clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <48000000>;
+		clock-accuracy = <100>;
+	};
+
+	mmc_reg_1v8: regulator-1v8 {
+		compatible = "regulator-fixed";
+
+		enable-active-high;
+
+		regulator-always-on;
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "mmc_io";
+	};
+
+	mmc_reg_3v3: regulator-3v3 {
+		compatible = "regulator-fixed";
+
+		enable-active-high;
+
+		regulator-always-on;
+		regulator-max-microvolt = <3300000>;
+		regulator-min-microvolt = <3300000>;
+		regulator-name = "mmc_power";
+	};
+
 	palmbus: palmbus@10000000 {
 		compatible = "palmbus";
 		reg = <0x10000000 0x200000>;
@@ -355,15 +384,34 @@
 		reset-names = "host", "device";
 	};
 
-	sdhci: sdhci@10130000 {
-		compatible = "ralink,mt7620-sdhci";
+	sdhci: mmc@10130000 {
+		compatible = "mediatek,mt7620-mmc", "ralink,mt7620-sdhci";
 		reg = <0x10130000 0x4000>;
 
+		bus-width = <4>;
+
+		cap-mmc-highspeed;
+		cap-sd-highspeed;
+
+		clocks = <&mmc_clk>, <&mmc_clk>;
+		clock-names = "source", "hclk";
+
+		disable-wp;
+
 		interrupt-parent = <&intc>;
 		interrupts = <14>;
 
-		pinctrl-names = "default";
+		max-frequency = <48000000>;
+
+		pinctrl-names = "default", "state_uhs";
 		pinctrl-0 = <&sdxc_pins>;
+		pinctrl-1 = <&sdxc_pins>;
+
+		resets = <&sysc 30>;
+		reset-names = "hrst";
+
+		vmmc-supply = <&mmc_reg_3v3>;
+		vqmmc-supply = <&mmc_reg_1v8>;
 
 		status = "disabled";
 	};

target/linux/ramips/dts/mt7628an_hak5_wifi-pineapple-mk7.dts

@@ -55,16 +55,10 @@
 			gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
 		};
 	};
+};
 
-	sdhci@10130000 {
-		compatible = "ralink,mt7620-sdhci";
-		reg = <0x10130000 4000>;
-
-		interrupt-parent = <&intc>;
-		interrupts = <14>;
-
-		status = "okay";
-	};
+&sdhci {
+	status = "okay";
 };
 
 &state_default {

target/linux/ramips/mt7620/config-6.6

@@ -186,6 +186,8 @@ CONFIG_RANDSTRUCT_NONE=y
 CONFIG_RATIONAL=y
 CONFIG_REGMAP=y
 CONFIG_REGMAP_MMIO=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_RESET_CONTROLLER=y
 CONFIG_SERIAL_8250_RT288X=y
 CONFIG_SERIAL_MCTRL_GPIO=y