1 files changed, 139 insertions, 0 deletions
diff --git a/arch/arm/dts/mt7981-emmc-rfb.dts b/arch/arm/dts/mt7981-emmc-rfb.dts
new file mode 100644
index 0000000000..2b7eae99ce
--- /dev/null
+++ b/arch/arm/dts/mt7981-emmc-rfb.dts
@@ -0,0 +1,139 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ * Author: Sam Shih <sam.shih@mediatek.com>
+ */
+
+/dts-v1/;
+#include "mt7981.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	model = "mt7981-rfb";
+	compatible = "mediatek,mt7981", "mediatek,mt7981-rfb";
+	chosen {
+		stdout-path = &uart0;
+		tick-timer = &timer0;
+	};
+
+	reg_3p3v: regulator-3p3v {
+		  compatible = "regulator-fixed";
+		  regulator-name = "fixed-3.3V";
+		  regulator-min-microvolt = <3300000>;
+		  regulator-max-microvolt = <3300000>;
+		  regulator-boot-on;
+		  regulator-always-on;
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_pins>;
+	status = "disabled";
+};
+
+&eth {
+	status = "okay";
+	mediatek,gmac-id = <0>;
+	phy-mode = "sgmii";
+	mediatek,switch = "mt7531";
+	reset-gpios = <&gpio 39 GPIO_ACTIVE_HIGH>;
+
+	fixed-link {
+		speed = <1000>;
+		full-duplex;
+	};
+};
+
+&pinctrl {
+	spic_pins: spi1-pins-func-1 {
+		mux {
+			function = "spi";
+			groups = "spi1_1";
+		};
+	};
+
+	uart1_pins: spi1-pins-func-3 {
+		mux {
+			function = "uart";
+			groups = "uart1_2";
+		};
+	};
+
+	/* pin15 as pwm0 */
+	one_pwm_pins: one-pwm-pins {
+		mux {
+			function = "pwm";
+			groups = "pwm0_1";
+		};
+	};
+
+	/* pin15 as pwm0 and pin14 as pwm1 */
+	two_pwm_pins: two-pwm-pins {
+		mux {
+			function = "pwm";
+			groups = "pwm0_1", "pwm1_0";
+		};
+	};
+
+	/* pin15 as pwm0, pin14 as pwm1, pin7 as pwm2 */
+	three_pwm_pins: three-pwm-pins {
+		mux {
+			function = "pwm";
+			groups = "pwm0_1", "pwm1_0", "pwm2";
+		};
+	};
+
+	mmc0_pins_default: mmc0default {
+		mux {
+			function = "flash";
+			groups =  "emmc_45";
+		};
+		conf-cmd-dat {
+			pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO",
+				"SPI0_CS",  "SPI0_HOLD", "SPI0_WP",
+				"SPI1_CLK", "SPI1_MOSI", "SPI1_MISO";
+			input-enable;
+			drive-strength = <MTK_DRIVE_4mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+		conf-clk {
+			pins = "SPI1_CS";
+			drive-strength = <MTK_DRIVE_6mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+		conf-rst {
+			pins = "PWM0";
+			drive-strength = <MTK_DRIVE_4mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+	};
+};
+
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&two_pwm_pins>;
+	status = "okay";
+};
+
+&watchdog {
+	status = "disabled";
+};
+
+&mmc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_pins_default>;
+	bus-width = <8>;
+	max-frequency = <52000000>;
+	cap-mmc-highspeed;
+	cap-mmc-hw-reset;
+	vmmc-supply = <&reg_3p3v>;
+	non-removable;
+	status = "okay";
+};