rockchip: board: Add minimal generic RK3588S/RK3588 board

Add a minimal generic RK3588S/RK3588 board that only have eMMC and SDMMC
enabled. This defconfig can be used to boot from eMMC or SD-card on most
RK3588S/RK3588 boards that follow reference board design.

Also fix the alphabetical order of RK3588 boards listed in Makefile and
documentation.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 6e04910..951327b 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -196,14 +196,15 @@
 	rk3588-edgeble-neu6a-io.dtb \
 	rk3588-edgeble-neu6b-io.dtb \
 	rk3588-evb1-v10.dtb \
+	rk3588-generic.dtb \
 	rk3588-jaguar.dtb \
 	rk3588-nanopc-t6.dtb \
 	rk3588s-orangepi-5.dtb \
 	rk3588-orangepi-5-plus.dtb \
 	rk3588-quartzpro64.dtb \
-	rk3588-turing-rk1.dtb \
 	rk3588s-rock-5a.dtb \
-	rk3588-rock-5b.dtb
+	rk3588-rock-5b.dtb \
+	rk3588-turing-rk1.dtb
 
 dtb-$(CONFIG_ROCKCHIP_RV1108) += \
 	rv1108-elgin-r1.dtb \
diff --git a/arch/arm/dts/rk3588-generic-u-boot.dtsi b/arch/arm/dts/rk3588-generic-u-boot.dtsi
new file mode 100644
index 0000000..853ed58
--- /dev/null
+++ b/arch/arm/dts/rk3588-generic-u-boot.dtsi
@@ -0,0 +1,3 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk3588s-u-boot.dtsi"
diff --git a/arch/arm/dts/rk3588-generic.dts b/arch/arm/dts/rk3588-generic.dts
new file mode 100644
index 0000000..e4721d9
--- /dev/null
+++ b/arch/arm/dts/rk3588-generic.dts
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Minimal generic DT for RK3588S/RK3588 with eMMC and SD-card enabled
+ */
+
+/dts-v1/;
+#include "rk3588s.dtsi"
+
+/ {
+	model = "Generic RK3588S/RK3588";
+	compatible = "rockchip,rk3588";
+
+	aliases {
+		mmc0 = &sdhci;
+		mmc1 = &sdmmc;
+	};
+
+	chosen {
+		stdout-path = "serial2:1500000n8";
+	};
+};
+
+&sdhci {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	mmc-hs200-1_8v;
+	no-sd;
+	no-sdio;
+	non-removable;
+	status = "okay";
+};
+
+&sdmmc {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	disable-wp;
+	no-mmc;
+	no-sdio;
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};