Re: [PATCH 2/2] arm64: dts: rockchip: Add NanoPC T6

On Mon, 7 Aug 2023 08:44:40 +0200
Krzysztof Kozlowski [off-list ref] wrote:

On 02/08/2023 07:14, Thomas McKahan wrote:

quoted

Add the NanoPC T6, a single board computer from FriendlyElec based on
the RK3588.

Initial device tree supports debug UART, SD, eMMC, PCIe 3, PMIC,
and 40 pin GPIO assignments.

Signed-off-by: Thomas McKahan <redacted>
---
 arch/arm64/boot/dts/rockchip/Makefile         |   1 +
 .../boot/dts/rockchip/rk3588-nanopc-t6.dts    | 845 ++++++++++++++++++
 2 files changed, 846 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 1ebbb3e9c2f9..e7728007fd1b 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile

@@ -100,6 +100,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3568-rock-3a.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-edgeble-neu6a-io.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-edgeble-neu6b-io.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-evb1-v10.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-nanopc-t6.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-rock-5b.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-indiedroid-nova.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-khadas-edge2.dtb

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts
new file mode 100644
index 000000000000..2362da2c53d9
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts

@@ -0,0 +1,845 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2021 Rockchip Electronics Co., Ltd.
+ * Copyright (c) 2023 Thomas McKahan
+ *
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+#include <dt-bindings/usb/pd.h>
+#include "rk3588.dtsi"
+
+/ {
+	model = "FriendlyElec NanoPC-T6";
+	compatible = "friendlyarm,nanopc-t6", "rockchip,rk3588";
+

...

quoted

+&spi2 {
+	status = "okay";
+	assigned-clocks = <&cru CLK_SPI2>;
+	assigned-clock-rates = <200000000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi2m2_cs0 &spi2m2_pins>;
+	num-cs = <1>;
+
+	pmic@0 {
+		compatible = "rockchip,rk806";
+		spi-max-frequency = <1000000>;
+		reg = <0x0>;
+
+		interrupt-parent = <&gpio0>;
+		interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&pmic_pins>, <&rk806_dvs1_null>,
+			    <&rk806_dvs2_null>, <&rk806_dvs3_null>;
+
+		vcc1-supply = <&vcc4v0_sys>;
+		vcc2-supply = <&vcc4v0_sys>;
+		vcc3-supply = <&vcc4v0_sys>;
+		vcc4-supply = <&vcc4v0_sys>;
+		vcc5-supply = <&vcc4v0_sys>;
+		vcc6-supply = <&vcc4v0_sys>;
+		vcc7-supply = <&vcc4v0_sys>;
+		vcc8-supply = <&vcc4v0_sys>;
+		vcc9-supply = <&vcc4v0_sys>;
+		vcc10-supply = <&vcc4v0_sys>;
+		vcc11-supply = <&vcc_2v0_pldo_s3>;
+		vcc12-supply = <&vcc4v0_sys>;
+		vcc13-supply = <&vcc_1v1_nldo_s3>;
+		vcc14-supply = <&vcc_1v1_nldo_s3>;
+		vcca-supply = <&vcc4v0_sys>;
+
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		rk806_dvs1_null: dvs1-null-pins {
+			pins = "gpio_pwrctrl2";
+			function = "pin_fun0";
+		};
+
+		rk806_dvs2_null: dvs2-null-pins {
+			pins = "gpio_pwrctrl2";
+			function = "pin_fun0";
+		};
+
+		rk806_dvs3_null: dvs3-null-pins {
+			pins = "gpio_pwrctrl3";
+			function = "pin_fun0";
+		};
+
+		regulators {
+			vdd_gpu_s0: vdd_gpu_mem_s0: dcdc-reg1 {
+				regulator-boot-on;  

Boolean properties are not first, but last. regulator-name is the first
one. This odd style...

I agree, however it seems the norm in Rockchip devices. This will
become an outlier in Rockchip but fall in line with the general case.
I'll put it in V2 with the other mentioned fixes unless a conflicting 
opinion is expressed. 

quoted

+				regulator-min-microvolt = <550000>;
+				regulator-max-microvolt = <950000>;
+				regulator-ramp-delay = <12500>;
+				regulator-name = "vdd_gpu_s0";
+				regulator-enable-ramp-delay = <400>;
+
+				regulator-state-mem {
+					regulator-off-in-suspend;
+				};
+			};  

Best regards,
Krzysztof

Best Regards,
Thomas

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