Re: [PATCH v1 1/1] arm64: dts: rockchip: Add support for TB-96AI board

From: Manivannan Sadhasivam
Date: Wed Jul 17 2019 - 11:48:05 EST

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Hi Elon,

Thanks for the patch. Overall, this patch needs a bit of cleanup. There
are many nodes added which are not available in mainline.

Please see comments inline.

On Thu, Jul 11, 2019 at 10:12:09AM +0800, Elon Zhang wrote:
> Add devicetree support for RK3399Pro TB-96AI board, one of
> the 96Boards family.
>
> The TB-96AI board is a 96Boards Compute SOM design, launched
> by Linaro, Rockchip and Beiqicloud.
>
> More information can be obtained from the following websites:
> 1.https://www.96boards.org/product/tb-96ai/
> 2.http://t.rock-chips.com/
> 3.http://www.beiqicloud.com/
>
> This patch add basic node for the board and support booting up
> to Fedora.
>
> Signed-off-by: Elon Zhang <zhangzj@xxxxxxxxxxxxxx>
>
> diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
> index 5f2687acbf94..3d6c8d4363b5 100644
> --- a/arch/arm64/boot/dts/rockchip/Makefile
> +++ b/arch/arm64/boot/dts/rockchip/Makefile
> @@ -27,3 +27,4 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock960.dtb
> dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64.dtb
> dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire.dtb
> dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire-excavator.dtb
> +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399pro-tb-96ai.dtb
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399pro-tb-96ai.dts b/arch/arm64/boot/dts/rockchip/rk3399pro-tb-96ai.dts
> new file mode 100644
> index 000000000000..1935df99065d
> --- /dev/null
> +++ b/arch/arm64/boot/dts/rockchip/rk3399pro-tb-96ai.dts
> @@ -0,0 +1,629 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd.
> + */
> +
> +/dts-v1/;
> +#include "rk3399pro.dtsi"
> +#include "rk3399-opp.dtsi"
> +
> +/ {
> + compatible = "rockchip,rk3399pro-tb-96ai", "rockchip,rk3399pro";
> +

I think the manufacturer of this board is, Xiamen Beiqi Technology Co. Ltd.
So, the compatible should be:

compatible = "beiqui,rk3399pro-tb-96ai", "rockchip,rk3399pro";

And there should a separate patch to add the vendor prefix. You can refer
below patch:

https://lkml.org/lkml/2019/7/17/39

> + chosen {
> + stdout-path = "serial2:1500000n8";
> + };
> +
> + xin32k: xin32k {
> + compatible = "fixed-clock";
> + clock-frequency = <32768>;
> + clock-output-names = "xin32k";
> + #clock-cells = <0>;
> + };
> +
> + vcc_phy: vcc-phy-regulator {
> + compatible = "regulator-fixed";
> + regulator-name = "vcc_phy";
> + regulator-always-on;
> + regulator-boot-on;
> + };
> +
> + vcc5v0_sys: vccsys {
> + compatible = "regulator-fixed";
> + regulator-name = "vcc5v0_sys";
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <5000000>;
> + };
> +
> + vdd_log: vdd_log {
> + compatible = "regulator-fixed";
> + regulator-name = "vdd_log";
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <900000>;
> + regulator-max-microvolt = <900000>;
> + };
> +
> + leds: gpio-leds {
> + compatible = "gpio-leds";
> + pinctrl-names = "default";
> + pinctrl-0 =<&leds_gpio>;

Leave a space after =

> +
> + led@1 {
> + gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
> + label = "system_work_led1";
> + retain-state-suspended;
> + };
> +

We are using a standard LED formats for all 96Boards. Please see,
rk3399-rock960.dts for reference. Since there is only user leds
(apart from power leds), just define those as per the format.

> + led@2 {
> + gpios = <&gpio2 4 GPIO_ACTIVE_HIGH>;
> + label = "system_work_led2";
> + retain-state-suspended;
> + };
> +
> + led@3 {
> + gpios = <&gpio2 3 GPIO_ACTIVE_HIGH>;
> + label = "system_work_led3";
> + retain-state-suspended;
> + };
> + };
> +};
> +
> +&cpu_l0 {
> + cpu-supply = <&vdd_cpu_l>;
> +};
> +
> +&cpu_l1 {
> + cpu-supply = <&vdd_cpu_l>;
> +};
> +
> +&cpu_l2 {
> + cpu-supply = <&vdd_cpu_l>;
> +};
> +
> +&cpu_l3 {
> + cpu-supply = <&vdd_cpu_l>;
> +};
> +
> +&cpu_b0 {
> + cpu-supply = <&vdd_cpu_b>;
> +};
> +
> +&cpu_b1 {
> + cpu-supply = <&vdd_cpu_b>;
> +};
> +
> +&emmc_phy {
> + status = "okay";
> +};
> +
> +&i2c0 {
> + status = "okay";
> + i2c-scl-rising-time-ns = <180>;
> + i2c-scl-falling-time-ns = <30>;
> + clock-frequency = <400000>;
> +
> + rk809: pmic@20 {
> + compatible = "rockchip,rk809";

It looks like this driver is not present in mainline yet. I can see
some old patches in lkml archive but not sure about the status of those.
So, please remove this node and use dummy regulators where applicable.

> + reg = <0x20>;
> + interrupt-parent = <&gpio1>;
> + interrupts = <RK_PC2 IRQ_TYPE_LEVEL_LOW>;
> + pinctrl-names = "default", "pmic-sleep",
> + "pmic-power-off", "pmic-reset";
> + pinctrl-0 = <&pmic_int_l>;
> + pinctrl-1 = <&soc_slppin_slp>, <&rk809_slppin_slp>;
> + pinctrl-2 = <&soc_slppin_gpio>, <&rk809_slppin_pwrdn>;
> + pinctrl-3 = <&soc_slppin_gpio>,<&rk809_slppin_null>;
> + rockchip,system-power-controller;
> + pmic-reset-func = <1>;
> + wakeup-source;
> + #clock-cells = <1>;
> + clock-output-names = "rk808-clkout1", "rk808-clkout2";
> +
> + vcc1-supply = <&vcc5v0_sys>;
> + vcc2-supply = <&vcc5v0_sys>;
> + vcc3-supply = <&vcc5v0_sys>;
> + vcc4-supply = <&vcc5v0_sys>;
> + vcc5-supply = <&vcc_buck5>;
> + vcc6-supply = <&vcc_buck5>;
> + vcc7-supply = <&vcc3v3_sys>;
> + vcc8-supply = <&vcc3v3_sys>;
> + vcc9-supply = <&vcc5v0_sys>;
> +
> + pwrkey {
> + status = "okay";
> + };
> +
> + rtc {
> + status = "okay";
> + };
> +
> + pinctrl_rk8xx: pinctrl_rk8xx {
> + gpio-controller;
> + #gpio-cells = <2>;
> +
> + rk809_slppin_null: rk809_slppin_null {
> + pins = "gpio_slp";
> + function = "pin_fun0";
> + };
> +
> + rk809_slppin_slp: rk809_slppin_slp {
> + pins = "gpio_slp";
> + function = "pin_fun1";
> + };
> +
> + rk809_slppin_pwrdn: rk809_slppin_pwrdn {
> + pins = "gpio_slp";
> + function = "pin_fun2";
> + };
> +
> + rk809_slppin_rst: rk809_slppin_rst {
> + pins = "gpio_slp";
> + function = "pin_fun3";
> + };
> + };
> +
> + regulators {
> + vdd_center: DCDC_REG1 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <750000>;
> + regulator-max-microvolt = <1350000>;
> + regulator-initial-mode = <0x2>;
> + regulator-name = "vdd_center";
> + regulator-state-mem {
> + regulator-on-in-suspend;
> + regulator-suspend-microvolt = <900000>;
> + };
> + };
> +
> + vdd_cpu_l: DCDC_REG2 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <750000>;
> + regulator-max-microvolt = <1350000>;
> + regulator-ramp-delay = <6001>;
> + regulator-initial-mode = <0x2>;
> + regulator-name = "vdd_cpu_l";
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> +
> + vcc_ddr: DCDC_REG3 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-name = "vcc_ddr";
> + regulator-initial-mode = <0x2>;
> + regulator-state-mem {
> + regulator-on-in-suspend;
> + };
> + };
> +
> + vcc3v3_sys: DCDC_REG4 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-initial-mode = <0x2>;
> + regulator-name = "vcc3v3_sys";
> + regulator-state-mem {
> + regulator-on-in-suspend;
> + regulator-suspend-microvolt = <3300000>;
> + };
> + };
> +
> + vcc_buck5: DCDC_REG5 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <2200000>;
> + regulator-max-microvolt = <2200000>;
> + regulator-name = "vcc_buck5";
> + regulator-state-mem {
> + regulator-on-in-suspend;
> + regulator-suspend-microvolt = <2200000>;
> + };
> + };
> +
> + vcca_0v9: LDO_REG1 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <900000>;
> + regulator-max-microvolt = <900000>;
> + regulator-name = "vcca_0v9";
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> +
> + vcc_1v8: LDO_REG2 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> +
> + regulator-name = "vcc_1v8";
> + regulator-state-mem {
> + regulator-on-in-suspend;
> + regulator-suspend-microvolt = <1800000>;
> + };
> + };
> +
> + vcc0v9_soc: LDO_REG3 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <900000>;
> + regulator-max-microvolt = <900000>;
> +
> + regulator-name = "vcc0v9_soc";
> + regulator-state-mem {
> + regulator-on-in-suspend;
> + regulator-suspend-microvolt = <900000>;
> + };
> + };
> +
> + vcca_1v8: LDO_REG4 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> +
> + regulator-name = "vcca_1v8";
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> +
> + vdd1v5_dvp: LDO_REG5 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <1500000>;
> + regulator-max-microvolt = <1500000>;
> +
> + regulator-name = "vdd1v5_dvp";
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> +
> + vcc_1v5: LDO_REG6 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <1500000>;
> + regulator-max-microvolt = <1500000>;
> +
> + regulator-name = "vcc_1v5";
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> +
> + vcc_3v0: LDO_REG7 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <3000000>;
> + regulator-max-microvolt = <3000000>;
> +
> + regulator-name = "vcc_3v0";
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> +
> + vccio_sd: LDO_REG8 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <3300000>;
> +
> + regulator-name = "vccio_sd";
> + regulator-state-mem {
> + regulator-on-in-suspend;
> + regulator-suspend-microvolt = <3300000>;
> + };
> + };
> +
> + vcc_sd: LDO_REG9 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> +
> + regulator-name = "vcc_sd";
> + regulator-state-mem {
> + regulator-on-in-suspend;
> + regulator-suspend-microvolt = <3300000>;
> + };
> + };
> +
> + vcc5v0_usb: SWITCH_REG1 {
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <5000000>;
> +
> + regulator-name = "vcc5v0_usb";
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> +
> + vccio_3v3: SWITCH_REG2 {
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> +
> + regulator-name = "vccio_3v3";
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> + };
> + };
> +
> + vdd_cpu_b: tcs452x@1c {
> + compatible = "tcs,tcs452x";

Again, there is no driver for this.

> + reg = <0x1c>;
> + vin-supply = <&vcc5v0_sys>;
> + regulator-compatible = "fan53555-reg";
> + pinctrl-0 = <&vsel1_gpio>;
> + vsel-gpios = <&gpio1 RK_PC1 GPIO_ACTIVE_HIGH>;
> + regulator-name = "vdd_cpu_b";
> + regulator-min-microvolt = <712500>;
> + regulator-max-microvolt = <1500000>;
> + regulator-ramp-delay = <2300>;
> + fcs,suspend-voltage-selector = <1>;
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-initial-state = <3>;
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> +
> + vdd_gpu: tcs452x@10 {
> + compatible = "tcs,tcs452x";

ditto.

> + status = "okay";
> + reg = <0x10>;
> + vin-supply = <&vcc5v0_sys>;
> + regulator-compatible = "fan53555-reg";
> + pinctrl-0 = <&vsel2_gpio>;
> + vsel-gpios = <&gpio1 RK_PB6 GPIO_ACTIVE_HIGH>;
> + regulator-name = "vdd_gpu";
> + regulator-min-microvolt = <735000>;
> + regulator-max-microvolt = <1400000>;
> + regulator-ramp-delay = <2300>;
> + fcs,suspend-voltage-selector = <1>;
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-state-mem {
> + regulator-off-in-suspend;
> + };
> + };
> +
> +};
> +
> +&i2c8 {
> + status = "okay";
> + i2c-scl-rising-time-ns = <345>;
> + i2c-scl-falling-time-ns = <11>;
> + clock-frequency = <100000>;
> +
> + fusb0: fusb30x@22 {
> + compatible = "fairchild,fusb302";

ditto, please remove.

> + reg = <0x22>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&fusb0_int>;
> + int-n-gpios = <&gpio1 RK_PA2 GPIO_ACTIVE_HIGH>;
> + vbus-5v-gpios = <&gpio0 RK_PA1 GPIO_ACTIVE_LOW>;
> + status = "okay";
> + };
> +
> +};
> +
> +&io_domains {
> + status = "okay";
> + bt656-supply = <&vcca_1v8>; /* APIO2_VDD */
> + audio-supply = <&vcca_1v8>; /* APIO5_VDD */
> + sdmmc-supply = <&vccio_sd>; /* SDMMC0_VDD */
> + gpio1830-supply = <&vcc_1v8>; /* APIO4_VDD */
> +};
> +
> +&pinctrl {
> + pinctrl-names = "default";
> + pinctrl-0 = <&npu_ref_clk>;
> +
> + fusb30x {
> + fusb0_int: fusb0-int {
> + rockchip,pins =
> + <1 RK_PA2 0 &pcfg_pull_up>;
> + };
> + };

not needed.

> +
> + gpio-leds {
> + leds_gpio: leds-gpio {
> + rockchip,pins =
> + <2 5 RK_FUNC_GPIO &pcfg_pull_up>,
> + <2 4 RK_FUNC_GPIO &pcfg_pull_up>,
> + <2 3 RK_FUNC_GPIO &pcfg_pull_up>;

I don't think we need pull-up here.

> + };
> + };
> +
> + npu_clk {
> + npu_ref_clk: npu-ref-clk {
> + rockchip,pins =
> + <0 RK_PA2 1 &pcfg_pull_none>;
> + };
> + };
> +
> + pmic {
> + pmic_int_l: pmic-int-l {
> + rockchip,pins =
> + <1 RK_PC2 0 &pcfg_pull_up>;
> + };
> +
> + soc_slppin_gpio: soc-slppin-gpio {
> + rockchip,pins =
> + <1 RK_PA5 0 &pcfg_output_low>;
> + };
> +
> + soc_slppin_slp: soc-slppin-slp {
> + rockchip,pins =
> + <1 RK_PA5 1 &pcfg_pull_down>;
> + };
> +
> + vsel1_gpio: vsel1-gpio {
> + rockchip,pins =
> + <1 RK_PC1 0 &pcfg_pull_down>;
> + };
> +
> + vsel2_gpio: vsel2-gpio {
> + rockchip,pins =
> + <1 RK_PB6 0 &pcfg_pull_down>;
> + };
> + };

not needed.

> +
> + usb3 {
> + usb3_host_en: usb3-host-en {
> + rockchip,pins =
> + <2 RK_PA2 RK_FUNC_GPIO &pcfg_output_high>;
> + };
> + };
> +};
> +
> +&pmu_io_domains {
> + status = "okay";
> + pmu1830-supply = <&vcc_1v8>;
> +};
> +
> +&pwm0 {
> + status = "okay";
> +};
> +
> +&pwm2 {
> + status = "okay";
> +};
> +
> +&saradc {
> + status = "okay";
> + vref-supply = <&vcc_1v8>;
> +};
> +
> +&sdhci {
> + bus-width = <8>;
> + mmc-hs400-1_8v;
> + supports-emmc;

there is no such property, so please remove. Since this controller is
used for emmc, you can use "no-sd" and "no-sdio" properties if needed.

> + non-removable;
> + keep-power-in-suspend;
> + mmc-hs400-enhanced-strobe;
> + status = "okay";
> +};
> +
> +&sdmmc {
> + clock-frequency = <150000000>;
> + clock-freq-min-max = <400000 150000000>;
> + supports-sd;

Same as above, property not available. Use, "no-sdio" and "no-emmc" if
needed.

> + bus-width = <4>;
> + cap-mmc-highspeed;
> + cap-sd-highspeed;
> + disable-wp;
> + num-slots = <1>;

not needed.

> + vqmmc-supply = <&vccio_sd>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
> + status = "okay";
> +};
> +
> +&tcphy0 {
> + extcon = <&fusb0>;
> + status = "okay";
> +};
> +
> +&tcphy1 {
> + status = "okay";
> +};
> +
> +&tsadc {
> + rockchip,hw-tshut-mode = <1>; /* tshut mode 0:CRU 1:GPIO */
> + rockchip,hw-tshut-polarity = <1>; /* tshut polarity 0:LOW 1:HIGH */

Any clue about shutdown temperature? Not necessary now but good to have.

Thanks,
Mani
> + status = "okay";
> +};
> +
> +&u2phy0 {
> + status = "okay";
> + extcon = <&fusb0>;
> +
> + u2phy0_otg: otg-port {
> + status = "okay";
> + };
> +
> + u2phy0_host: host-port {
> + phy-supply = <&vcc5v0_usb>;
> + status = "okay";
> + };
> +};
> +
> +&u2phy1 {
> + status = "okay";
> +
> + u2phy1_otg: otg-port {
> + status = "okay";
> + };
> +
> + u2phy1_host: host-port {
> + phy-supply = <&vcc5v0_usb>;
> + status = "okay";
> + };
> +};
> +
> +&uart0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart0_xfer &uart0_cts>;
> + status = "okay";
> +};
> +
> +&uart2 {
> + status = "okay";
> +};
> +
> +&uart4 {
> + status = "okay";
> +};
> +
> +&usb_host0_ehci {
> + status = "okay";
> +};
> +
> +&usb_host1_ehci {
> + status = "okay";
> +};
> +
> +&usb_host0_ohci {
> + status = "okay";
> +};
> +
> +&usb_host1_ohci {
> + status = "okay";
> +};
> +
> +&usbdrd3_0 {
> + extcon = <&fusb0>;
> + status = "okay";
> +};
> +
> +&usbdrd3_1 {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&usb3_host_en>;
> +};
> +
> +&usbdrd_dwc3_0 {
> + status = "okay";
> +};
> +
> +&usbdrd_dwc3_1 {
> + snps,dis-u3-autosuspend-quirk;
> + status = "okay";
> +};
> +
> --
> 2.17.1
>
>
>

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