commit 65907508e7ea3f9f18705c94cfdfce878d8f9d82
author developer <developer@mediatek.com> Thu Jan 23 16:55:05 2025 +0800
committer Tom Rini <trini@konsulko.com> Thu Jan 30 14:35:14 2025 -0600
tree c217fe5303f576abf835f3cb73a625a20a4d37bd
parent 2de1f36f5dffa4caa233bd57922da19f00f7e7ba

board: mediatek: add MT7987 reference boards

This patch adds general board files based on MT7987 SoC.

MT7987 uses one mmc controller for booting from both SD and eMMC, and the
pins of mmc controller are also shared with one spi controller.
So three configs are need for these boot types:

1. mt7987_rfb_defconfig - SPI-NOR (spi2) and SPI-NAND (spi0)
2. mt7987_emmc_rfb_defconfig - eMMC + SPI-NOR (spi2)
3. mt7987_sd_rfb_defconfig - SD + SPI-NOR (spi2)

Note: spi2 also supports booting from SPI-NAND, but not the default option.

arch/arm/dts/mt7987a-sd-rfb-u-boot.dtsi

diff --git a/arch/arm/dts/mt7987a-sd-rfb-u-boot.dtsi b/arch/arm/dts/mt7987a-sd-rfb-u-boot.dtsi
new file mode 100644
index 0000000..b07e6da
--- /dev/null
+++ b/arch/arm/dts/mt7987a-sd-rfb-u-boot.dtsi
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "mt7987a-u-boot.dtsi"
+#include "mt7987-netsys-u-boot.dtsi"
+
+/ {
+	model = "mt7987";
+	compatible = "mediatek,mt7987", "mediatek,mt7987-sd-rfb";
+};
+
+&eth0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mdio0_pins>;
+	phy-mode = "2500base-x";
+	mediatek,switch = "auto";
+	reset-gpios = <&pio 42 GPIO_ACTIVE_HIGH>;
+
+	fixed-link {
+		speed = <2500>;
+		full-duplex;
+		pause;
+	};
+};
+
+&mmc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sd_pins_default>;
+	max-frequency = <48000000>;
+	bus-width = <4>;
+	cap-sd-highspeed;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_3p3v>;
+	status = "okay";
+};
+
+&spi2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi2_flash_pins>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+	must_tx;
+	enhance_timing;
+	dma_ext;
+	ipm_design;
+	support_quad;
+	tick_dly = <2>;
+	sample_sel = <0>;
+
+	/delete-node/ spi_nor@0;
+	spi_nor@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <52000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <4>;
+	};
+};