rockchip: board: Add minimal generic RK3566/RK3568 board

Add a minimal generic RK3566/RK3568 board that only have eMMC and SDMMC
enabled. This defconfig can be used to boot from eMMC or SD-card on most
RK3566/RK3568 boards that follow reference board design.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

2 files changed, 52 insertions, 0 deletions

diff --git a/arch/arm/dts/rk3568-generic-u-boot.dtsi b/arch/arm/dts/rk3568-generic-u-boot.dtsi
new file mode 100644
index 00000000000..90022580a13
--- /dev/null
+++ b/arch/arm/dts/rk3568-generic-u-boot.dtsi
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk356x-u-boot.dtsi"
+
+/ {
+	chosen {
+		stdout-path = &uart2;
+	};
+};
+
+&uart2 {
+	bootph-pre-ram;
+	clock-frequency = <24000000>;
+};
diff --git a/arch/arm/dts/rk3568-generic.dts b/arch/arm/dts/rk3568-generic.dts
new file mode 100644
index 00000000000..1006ea55bb9
--- /dev/null
+++ b/arch/arm/dts/rk3568-generic.dts
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Minimal generic DT for RK3566/RK3568 with eMMC and SD-card enabled
+ */
+
+/dts-v1/;
+#include "rk356x.dtsi"
+
+/ {
+	model = "Generic RK3566/RK3568";
+	compatible = "rockchip,rk3568";
+
+	chosen: chosen {
+		stdout-path = "serial2:1500000n8";
+	};
+};
+
+&sdhci {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_bus8 &emmc_clk &emmc_cmd>;
+	status = "okay";
+};
+
+&sdmmc0 {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	disable-wp;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc0_bus4 &sdmmc0_clk &sdmmc0_cmd>;
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};