board: mediatek: add MT7981 reference boards
This patch adds general board files based on MT7981 SoCs.
MT7981 uses one mmc controller for booting from both SD and eMMC, and the
pins of mmc controller are also shared with spi controller.
So three configs are need for these boot types:
1. mt7981_rfb_defconfig - SPI-NOR and SPI-NAND
2. mt7981_emmc_rfb_defconfig - eMMC only
3. mt7981_sd_rfb_defconfig - SD only
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 138c7ed..885ed5e 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1235,6 +1235,9 @@
mt7622-bananapi-bpi-r64.dtb \
mt7623n-bananapi-bpi-r2.dtb \
mt7629-rfb.dtb \
+ mt7981-rfb.dtb \
+ mt7981-emmc-rfb.dtb \
+ mt7981-sd-rfb.dtb \
mt7986a-rfb.dtb \
mt7986b-rfb.dtb \
mt7986a-sd-rfb.dtb \
diff --git a/arch/arm/dts/mt7981-emmc-rfb.dts b/arch/arm/dts/mt7981-emmc-rfb.dts
new file mode 100644
index 0000000..2b7eae9
--- /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";
+};
+
+ð {
+ 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 = <®_3p3v>;
+ non-removable;
+ status = "okay";
+};
diff --git a/arch/arm/dts/mt7981-rfb.dts b/arch/arm/dts/mt7981-rfb.dts
new file mode 100644
index 0000000..5559ace
--- /dev/null
+++ b/arch/arm/dts/mt7981-rfb.dts
@@ -0,0 +1,173 @@
+// 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;
+ };
+};
+
+&uart0 {
+ status = "okay";
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart1_pins>;
+ status = "disabled";
+};
+
+ð {
+ 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 {
+ spi_flash_pins: spi0-pins-func-1 {
+ mux {
+ function = "flash";
+ groups = "spi0", "spi0_wp_hold";
+ };
+
+ conf-pu {
+ pins = "SPI0_CS", "SPI0_HOLD", "SPI0_WP";
+ drive-strength = <MTK_DRIVE_8mA>;
+ bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
+ };
+
+ conf-pd {
+ pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO";
+ drive-strength = <MTK_DRIVE_8mA>;
+ bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
+ };
+ };
+
+ spi2_flash_pins: spi2-spi2-pins {
+ mux {
+ function = "spi";
+ groups = "spi2", "spi2_wp_hold";
+ };
+
+ conf-pu {
+ pins = "SPI2_CS", "SPI2_HOLD", "SPI2_WP";
+ drive-strength = <MTK_DRIVE_8mA>;
+ bias-pull-down = <MTK_PUPD_SET_R1R0_00>;
+ };
+
+ conf-pd {
+ pins = "SPI2_CLK", "SPI2_MOSI", "SPI2_MISO";
+ drive-strength = <MTK_DRIVE_8mA>;
+ bias-pull-down = <MTK_PUPD_SET_R1R0_00>;
+ };
+ };
+
+ 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";
+ };
+ };
+};
+
+&spi0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi_flash_pins>;
+ status = "okay";
+ must_tx;
+ enhance_timing;
+ dma_ext;
+ ipm_design;
+ support_quad;
+ tick_dly = <2>;
+ sample_sel = <0>;
+
+ spi_nand@0 {
+ compatible = "spi-nand";
+ reg = <0>;
+ spi-max-frequency = <52000000>;
+ };
+};
+
+&spi2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi2_flash_pins>;
+ status = "okay";
+ must_tx;
+ enhance_timing;
+ dma_ext;
+ ipm_design;
+ support_quad;
+ tick_dly = <2>;
+ sample_sel = <0>;
+
+ spi_nor@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <52000000>;
+ };
+};
+
+&pwm {
+ pinctrl-names = "default";
+ pinctrl-0 = <&two_pwm_pins>;
+ status = "okay";
+};
+
+&watchdog {
+ status = "disabled";
+};
diff --git a/arch/arm/dts/mt7981-sd-rfb.dts b/arch/arm/dts/mt7981-sd-rfb.dts
new file mode 100644
index 0000000..34ac227
--- /dev/null
+++ b/arch/arm/dts/mt7981-sd-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-sd-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";
+};
+
+ð {
+ 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 = <4>;
+ max-frequency = <52000000>;
+ cap-sd-highspeed;
+ r_smpl = <0>;
+ vmmc-supply = <®_3p3v>;
+ vqmmc-supply = <®_3p3v>;
+ status = "okay";
+};