board: rockchip: Add minimal generic RK3399 board

Add a minimal generic RK3399 board that only have eMMC, SDMMC, SPI flash
and USB OTG enabled. This defconfig can be used to boot from eMMC,
SD-card or SPI flash on most RK3399 boards that follow reference board
design.

Signed-off-by: Jonas Karlman <[email protected]>
Reviewed-by: Christopher Obbard <[email protected]>
Reviewed-by: Kever Yang <[email protected]>

2 files changed, 93 insertions, 0 deletions

diff --git a/arch/arm/dts/rk3399-generic-u-boot.dtsi b/arch/arm/dts/rk3399-generic-u-boot.dtsi
new file mode 100644
index 00000000000..d977b642f8d
--- /dev/null
+++ b/arch/arm/dts/rk3399-generic-u-boot.dtsi
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk3399-u-boot.dtsi"
+
+&spi1 {
+	flash@0 {
+		bootph-pre-ram;
+		bootph-some-ram;
+	};
+};
diff --git a/arch/arm/dts/rk3399-generic.dts b/arch/arm/dts/rk3399-generic.dts
new file mode 100644
index 00000000000..c698f59c565
--- /dev/null
+++ b/arch/arm/dts/rk3399-generic.dts
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Minimal generic DT for RK3399 with eMMC, SD-card, SPI flash and USB OTG enabled
+ */
+
+/dts-v1/;
+#include "rk3399.dtsi"
+
+/ {
+	model = "Generic RK3399";
+	compatible = "rockchip,rk3399";
+
+	aliases {
+		mmc0 = &sdhci;
+		mmc1 = &sdmmc;
+	};
+
+	chosen {
+		stdout-path = "serial2:1500000n8";
+	};
+};
+
+&emmc_phy {
+	status = "okay";
+};
+
+&sdhci {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	max-frequency = <150000000>;
+	mmc-hs200-1_8v;
+	mmc-ddr-1_8v;
+	no-sd;
+	no-sdio;
+	non-removable;
+	status = "okay";
+};
+
+&sdmmc {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	disable-wp;
+	max-frequency = <150000000>;
+	no-mmc;
+	no-sdio;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc_bus4 &sdmmc_clk &sdmmc_cmd &sdmmc_cd>;
+	status = "okay";
+};
+
+&spi1 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+	};
+};
+
+&u2phy0 {
+	status = "okay";
+};
+
+&u2phy0_otg {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&usbdrd3_0 {
+	status = "okay";
+};
+
+&usbdrd_dwc3_0 {
+	dr_mode = "peripheral";
+	maximum-speed = "high-speed";
+	phys = <&u2phy0_otg>;
+	phy-names = "usb2-phy";
+	status = "okay";
+};