- add OrangePi 6 Plus board

- one small improvement
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Merge tag 'cix-dt-v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/cix into soc/dt

- add OrangePi 6 Plus board
- one small improvement

* tag 'cix-dt-v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/cix:
  arm64: dts: cix: Add OrangePi 6 Plus board support
  arm64: dts: cix: Use lowercase hex

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/boot/dts/cix/Makefile

@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_CIX) += sky1-orion-o6.dtb
+dtb-$(CONFIG_ARCH_CIX) += sky1-xcp.dtb

arch/arm64/boot/dts/cix/sky1-xcp.dts

@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright 2025 Cix Technology Group Co., Ltd.
+ *
+ */
+
+/dts-v1/;
+
+#include "sky1.dtsi"
+#include "sky1-pinfunc.h"
+
+/ {
+	model = "Xunlong,OrangePi 6 Plus";
+	compatible = "xunlong,orangepi-6-plus", "cix,sky1";
+
+	aliases {
+		serial2 = &uart2;
+	};
+
+	chosen {
+		stdout-path = &uart2;
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		linux,cma {
+			compatible = "shared-dma-pool";
+			reusable;
+			size = <0x0 0x28000000>;
+			linux,cma-default;
+		};
+	};
+
+};
+
+&iomuxc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hog>;
+
+	pinctrl_hog: hog-cfg {
+		pins {
+			pinmux = <CIX_PAD_GPIO144_FUNC_GPIO144>,
+				<CIX_PAD_GPIO145_FUNC_GPIO145>,
+				<CIX_PAD_GPIO146_FUNC_GPIO146>,
+				<CIX_PAD_GPIO147_FUNC_GPIO147>;
+			bias-pull-down;
+			drive-strength = <8>;
+		};
+	};
+};
+
+&iomuxc_s5 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hog_s5>;
+
+	pinctrl_hog_s5: hog-s5-cfg {
+		pins {
+			pinmux = <CIX_PAD_GPIO014_FUNC_GPIO014>;
+			bias-pull-up;
+			drive-strength = <8>;
+
+		};
+	};
+};
+
+&pcie_x8_rc {
+	status = "okay";
+};
+
+&pcie_x2_rc {
+	status = "okay";
+};
+
+&pcie_x1_1_rc {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};

arch/arm64/boot/dts/cix/sky1.dtsi

@@ -523,7 +523,7 @@ pcie_x1_1_rc: pcie@a0e0000 {
 			reg-names = "reg", "cfg", "rcsu_strap", "rcsu_status", "msg";
 			ranges = <0x01000000 0x0 0x38100000 0x0 0x38100000 0x0 0x00100000>,
 				 <0x02000000 0x0 0x38200000 0x0 0x38200000 0x0 0x07e00000>,
-				 <0x43000000 0x0C 0x00000000 0x0C 0x00000000 0x04 0x00000000>;
+				 <0x43000000 0x0c 0x00000000 0x0c 0x00000000 0x04 0x00000000>;
 			#address-cells = <3>;
 			#size-cells = <2>;
 			bus-range = <0x30 0x5f>;