arm64: dts: rockchip: Add Lunzn Fastrhino R68S

It's similar to Fastrhino R66S with the following changes:
+ 2/4GB LPDDR4 RAM
+ 2x 1000 Base-T (native, RTL8211f)
+ ADC button
+ 16GB eMMC on-board
- No SD card slot

Signed-off-by: Tianling Shen <cnsztl@gmail.com>
Link: https://lore.kernel.org/r/20230506061108.17658-3-cnsztl@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

2 files changed, 113 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 15089a78555a..1cf105d7407f 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -86,6 +86,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-lubancat-1.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-bpi-r2-pro.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-evb1-v10.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-fastrhino-r66s.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-fastrhino-r68s.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-lubancat-2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-nanopi-r5c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-nanopi-r5s.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3568-fastrhino-r68s.dts b/arch/arm64/boot/dts/rockchip/rk3568-fastrhino-r68s.dts
new file mode 100644
index 000000000000..e1fe5e442689
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3568-fastrhino-r68s.dts
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "rk3568-fastrhino-r66s.dtsi"
+
+/ {
+	model = "Lunzn FastRhino R68S";
+	compatible = "lunzn,fastrhino-r68s", "rockchip,rk3568";
+
+	aliases {
+		ethernet0 = &gmac0;
+		ethernet1 = &gmac1;
+		mmc0 = &sdhci;
+	};
+
+	adc-keys {
+		compatible = "adc-keys";
+		io-channels = <&saradc 0>;
+		io-channel-names = "buttons";
+		keyup-threshold-microvolt = <1800000>;
+
+		button-recovery {
+			label = "Recovery";
+			linux,code = <KEY_VENDOR>;
+			press-threshold-microvolt = <1750>;
+		};
+	};
+};
+
+&gmac0 {
+	assigned-clocks = <&cru SCLK_GMAC0_RX_TX>, <&cru SCLK_GMAC0>;
+	assigned-clock-parents = <&cru SCLK_GMAC0_RGMII_SPEED>;
+	assigned-clock-rates = <0>, <125000000>;
+	clock_in_out = "output";
+	phy-handle = <&rgmii_phy0>;
+	phy-mode = "rgmii-id";
+	pinctrl-names = "default";
+	pinctrl-0 = <&gmac0_miim
+		     &gmac0_tx_bus2
+		     &gmac0_rx_bus2
+		     &gmac0_rgmii_clk
+		     &gmac0_rgmii_bus>;
+	snps,reset-gpio = <&gpio0 RK_PB0 GPIO_ACTIVE_LOW>;
+	snps,reset-active-low;
+	/* Reset time is 15ms, 50ms for rtl8211f */
+	snps,reset-delays-us = <0 15000 50000>;
+	tx_delay = <0x3c>;
+	rx_delay = <0x2f>;
+	status = "okay";
+};
+
+&gmac1 {
+	assigned-clocks = <&cru SCLK_GMAC1_RX_TX>, <&cru SCLK_GMAC1>;
+	assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>;
+	assigned-clock-rates = <0>, <125000000>;
+	clock_in_out = "output";
+	phy-handle = <&rgmii_phy1>;
+	phy-mode = "rgmii-id";
+	pinctrl-names = "default";
+	pinctrl-0 = <&gmac1m1_miim
+		     &gmac1m1_tx_bus2
+		     &gmac1m1_rx_bus2
+		     &gmac1m1_rgmii_clk
+		     &gmac1m1_rgmii_bus>;
+	snps,reset-gpio = <&gpio0 RK_PB1 GPIO_ACTIVE_LOW>;
+	snps,reset-active-low;
+	/* Reset time is 15ms, 50ms for rtl8211f */
+	snps,reset-delays-us = <0 15000 50000>;
+	tx_delay = <0x4f>;
+	rx_delay = <0x26>;
+	status = "okay";
+};
+
+&mdio0 {
+	rgmii_phy0: ethernet-phy@0 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0>;
+		pinctrl-0 = <&eth_phy0_reset_pin>;
+		pinctrl-names = "default";
+	};
+};
+
+&mdio1 {
+	rgmii_phy1: ethernet-phy@0 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0>;
+		pinctrl-0 = <&eth_phy1_reset_pin>;
+		pinctrl-names = "default";
+	};
+};
+
+&pinctrl {
+	gmac0 {
+		eth_phy0_reset_pin: eth-phy0-reset-pin {
+			rockchip,pins = <1 RK_PB0 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	gmac1 {
+		eth_phy1_reset_pin: eth-phy1-reset-pin {
+			rockchip,pins = <1 RK_PB1 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+};
+
+&sdhci {
+	bus-width = <8>;
+	max-frequency = <200000000>;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_bus8 &emmc_clk &emmc_cmd &emmc_datastrobe>;
+	status = "okay";
+};