[RFC v3 05/11] arm64: dts: mt7986: add mmc related device nodes

[Frank Wunderlich <linux@xxxxxxxxx>]

From: Sam Shih <sam.shih@xxxxxxxxxxxx>

This patch adds mmc support for MT7986.

Signed-off-by: Sam Shih <sam.shih@xxxxxxxxxxxx>
Signed-off-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx>
---
v3:
- fix pullups/pulldowns for mt7986a-rfb to have generic bias-pull-*

v2:
- update mmc-node because clocks changed
---
 arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts | 87 ++++++++++++++++++++
 arch/arm64/boot/dts/mediatek/mt7986a.dtsi    | 15 ++++
 2 files changed, 102 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
index 2b5d7ea31b4d..e1a0331aaa5f 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
@@ -5,6 +5,8 @@
  */
 
 /dts-v1/;
+#include <dt-bindings/pinctrl/mt65xx.h>
+
 #include "mt7986a.dtsi"
 
 / {
@@ -24,6 +26,15 @@ memory@40000000 {
 		reg = <0 0x40000000 0 0x40000000>;
 	};
 
+	reg_1p8v: regulator-1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
 	reg_3p3v: regulator-3p3v {
 		compatible = "regulator-fixed";
 		regulator-name = "fixed-3.3V";
@@ -76,7 +87,83 @@ switch: switch@0 {
 	};
 };
 
+&mmc0 {
+	pinctrl-names = "default", "state_uhs";
+	pinctrl-0 = <&mmc0_pins_default>;
+	pinctrl-1 = <&mmc0_pins_uhs>;
+	bus-width = <8>;
+	max-frequency = <200000000>;
+	cap-mmc-highspeed;
+	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
+	hs400-ds-delay = <0x14014>;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_1p8v>;
+	non-removable;
+	no-sd;
+	no-sdio;
+	status = "okay";
+};
+
 &pio {
+	mmc0_pins_default: mmc0-pins {
+		mux {
+			function = "emmc";
+			groups = "emmc_51";
+		};
+		conf-cmd-dat {
+			pins = "EMMC_DATA_0", "EMMC_DATA_1", "EMMC_DATA_2",
+			       "EMMC_DATA_3", "EMMC_DATA_4", "EMMC_DATA_5",
+			       "EMMC_DATA_6", "EMMC_DATA_7", "EMMC_CMD";
+			input-enable;
+			drive-strength = <4>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>; /* pull-up 10K */
+		};
+		conf-clk {
+			pins = "EMMC_CK";
+			drive-strength = <6>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>; /* pull-down 50K */
+		};
+		conf-ds {
+			pins = "EMMC_DSL";
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>; /* pull-down 50K */
+		};
+		conf-rst {
+			pins = "EMMC_RSTB";
+			drive-strength = <4>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>; /* pull-up 10K */
+		};
+	};
+
+	mmc0_pins_uhs: mmc0-uhs-pins {
+		mux {
+			function = "emmc";
+			groups = "emmc_51";
+		};
+		conf-cmd-dat {
+			pins = "EMMC_DATA_0", "EMMC_DATA_1", "EMMC_DATA_2",
+			       "EMMC_DATA_3", "EMMC_DATA_4", "EMMC_DATA_5",
+			       "EMMC_DATA_6", "EMMC_DATA_7", "EMMC_CMD";
+			input-enable;
+			drive-strength = <4>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>; /* pull-up 10K */
+		};
+		conf-clk {
+			pins = "EMMC_CK";
+			drive-strength = <6>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>; /* pull-down 50K */
+		};
+		conf-ds {
+			pins = "EMMC_DSL";
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>; /* pull-down 50K */
+		};
+		conf-rst {
+			pins = "EMMC_RSTB";
+			drive-strength = <4>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>; /* pull-up 10K */
+		};
+	};
+
 	spi_flash_pins: spi-flash-pins {
 		mux {
 			function = "spi";
diff --git a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
index 1c7a973c28ca..32c26b239ae6 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -284,6 +284,21 @@ ssusb: usb@11200000 {
 			status = "disabled";
 		};
 
+		mmc0: mmc@11230000 {
+			compatible = "mediatek,mt7986-mmc";
+			reg = <0 0x11230000 0 0x1000>,
+			      <0 0x11c20000 0 0x1000>;
+			interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&topckgen CLK_TOP_EMMC_416M_SEL>,
+				 <&infracfg CLK_INFRA_MSDC_HCK_CK>,
+				 <&infracfg CLK_INFRA_MSDC_CK>,
+				 <&infracfg CLK_INFRA_MSDC_133M_CK>,
+				 <&infracfg CLK_INFRA_MSDC_66M_CK>;
+			clock-names = "source", "hclk", "source_cg", "bus_clk",
+				      "sys_cg";
+			status = "disabled";
+		};
+
 		usb_phy: t-phy@11e10000 {
 			compatible = "mediatek,mt7986-tphy",
 				     "mediatek,generic-tphy-v2";
-- 
2.34.1