Re: [PATCH v5] ARM: dts: tpc: Device tree description of the iMX6Q TPC board

From: Shawn Guo
Date: Tue Apr 17 2018 - 23:55:52 EST

On Tue, Apr 10, 2018 at 10:32:09PM +0200, Lukasz Majewski wrote:
> This commit adds device tree description of Kieback & Peter GmbH
> iMX6Q TPC board.
>
> Signed-off-by: Lukasz Majewski <lukma@xxxxxxx>
> Reviewed-by: Fabio Estevam <fabio.estevam@xxxxxxx>
>
> ---
> Changes for v5:
> - Use 'interpolation-steps' to fill the brightness level table
> - Remove not needed status = "okay" properties
> - Replace goodix_ts -> touchscreen
> - Replace sgtl5000 -> audio-codec
>
> This patch depends on PWM backlight intepolation work:
> https://patchwork.kernel.org/patch/10330775/
> https://patchwork.kernel.org/patch/10330777/
>
> Changes for v4:
> - Remove not needed bus-format-override = "rgb565";
> property
>
> Changes for v3:
> - Provide proper compatible for RTC DTS node
> - Remove wrong comment style for beeper
> - Add proper SPDX entries for DTS files
> - Add vendor prefix to a separate patch
>
> Changes for v2:
> - SPDX license identifiers used
> - Separate regulators
> - Proper beeper driver
> - Use of the lcd panel (with compatible) instead of timings provided in
> device tree
> - Add IRQ types (like IRQ_TYPE_EDGE_FALLING) and GPIO active levels (like
> GPIO_ACTIVE_HIGH)
> - Remove not needed nodes
> - Make W=1 dtbs compilation with no errors
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/imx6q-kp-tpc.dts | 22 ++
> arch/arm/boot/dts/imx6q-kp.dtsi | 432 +++++++++++++++++++++++++++++++++++++
> 3 files changed, 455 insertions(+)
> create mode 100644 arch/arm/boot/dts/imx6q-kp-tpc.dts
> create mode 100644 arch/arm/boot/dts/imx6q-kp.dtsi
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index ade7a38543dc..c148c4cf28f2 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -459,6 +459,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
> imx6q-icore-ofcap10.dtb \
> imx6q-icore-ofcap12.dtb \
> imx6q-icore-rqs.dtb \
> + imx6q-kp-tpc.dtb \
> imx6q-marsboard.dtb \
> imx6q-mccmon6.dtb \
> imx6q-nitrogen6x.dtb \
> diff --git a/arch/arm/boot/dts/imx6q-kp-tpc.dts b/arch/arm/boot/dts/imx6q-kp-tpc.dts
> new file mode 100644
> index 000000000000..c3dea0ec54ac
> --- /dev/null
> +++ b/arch/arm/boot/dts/imx6q-kp-tpc.dts
> @@ -0,0 +1,22 @@
> +//SPDX-License-Identifier: (GPL-2.0+ OR MIT)

There should be a space after //.

> +/*
> + * Copyright 2018
> + * Lukasz Majewski, DENX Software Engineering, lukma@xxxxxxx
> + */
> +
> +/dts-v1/;
> +
> +#include "imx6q-kp.dtsi"
> +
> +/ {
> + model = "Freescale i.MX6 Qwuad K+P TPC Board";
> + compatible = "kiebackpeter,imx6q-tpc", "fsl,imx6q";
> +
> + memory@10000000 {
> + reg = <0x10000000 0x40000000>;
> + };
> +};
> +
> +&ipu1_di0_disp0 {
> + remote-endpoint = <&lcd_display_in>;
> +};
> diff --git a/arch/arm/boot/dts/imx6q-kp.dtsi b/arch/arm/boot/dts/imx6q-kp.dtsi
> new file mode 100644
> index 000000000000..174d044cf8bf
> --- /dev/null
> +++ b/arch/arm/boot/dts/imx6q-kp.dtsi
> @@ -0,0 +1,432 @@
> +//SPDX-License-Identifier: (GPL-2.0+ OR MIT)

Ditto

> +/*
> + * Copyright 2018
> + * Lukasz Majewski, DENX Software Engineering, lukma@xxxxxxx
> + */
> +
> +/dts-v1/;
> +
> +#include "imx6q.dtsi"
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/pwm/pwm.h>
> +#include <dt-bindings/sound/fsl-imx-audmux.h>
> +
> +/ {
> + backlight_lcd: backlight-lcd {
> + compatible = "pwm-backlight";
> + pwms = <&pwm1 0 5000000>;
> + brightness-levels = <0 255>;
> + num-interpolated-steps = <255>;
> + default-brightness-level = <250>;
> + };
> +
> + beeper {
> + compatible = "pwm-beeper";
> + pwms = <&pwm2 0 500000>;
> + };
> +
> + lcd_display: disp0 {

s/disp0/display

> + compatible = "fsl,imx-parallel-display";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + interface-pix-fmt = "rgb24";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_ipu1>;
> +
> + port@0 {
> + reg = <0>;
> +
> + lcd_display_in: endpoint {
> + remote-endpoint = <&ipu1_di0_disp0>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> +
> + lcd_display_out: endpoint {
> + remote-endpoint = <&lcd_panel_in>;
> + };
> + };
> + };
> +
> + lcd_panel: lcd-panel {
> + compatible = "auo,g070vvn01";
> + backlight = <&backlight_lcd>;
> + power-supply = <&reg_display>;
> +
> + port {
> + lcd_panel_in: endpoint {
> + remote-endpoint = <&lcd_display_out>;
> + };
> + };
> + };
> +
> + leds {
> + compatible = "gpio-leds";
> +
> + green {
> + label = "led1";
> + gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "gpio";
> + default-state = "off";
> + };
> +
> + red {
> + label = "led0";
> + gpios = <&gpio3 23 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "gpio";
> + default-state = "off";
> + };
> + };
> +
> + reg_3p3v: regulator-3p3v {
> + compatible = "regulator-fixed";
> + regulator-name = "3P3V";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> +
> + reg_audio: regulator-audio {
> + compatible = "regulator-fixed";
> + regulator-name = "sgtl5000-supply";
> + gpio = <&gpio6 31 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + regulator-always-on;
> + };
> +
> + reg_display: regulator-display {
> + compatible = "regulator-fixed";
> + regulator-name = "display-supply";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> +
> + reg_usb_h1_vbus: regulator-usb_h1_vbus {
> + compatible = "regulator-fixed";
> + regulator-name = "usb_h1_vbus";
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <5000000>;
> + enable-active-high;
> + };
> +
> + sound {
> + compatible = "simple-audio-card";
> + simple-audio-card,name = "imx6q-sgtl5000-audio";
> + simple-audio-card,format = "i2s";
> + simple-audio-card,bitclock-master = <&codec_dai>;
> + simple-audio-card,frame-master = <&codec_dai>;
> +
> + cpu_dai: simple-audio-card,cpu {
> + sound-dai = <&ssi1>;
> + };
> +
> + codec_dai: simple-audio-card,codec {
> + sound-dai = <&codec>;
> + };
> + };
> +};
> +
> +&audmux {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_audmux>;
> + status = "okay";
> +
> + ssi1 {
> + fsl,audmux-port = <0>;
> + fsl,port-config = <
> + (IMX_AUDMUX_V2_PTCR_SYN |
> + IMX_AUDMUX_V2_PTCR_TFSEL(2) |
> + IMX_AUDMUX_V2_PTCR_TCSEL(2) |
> + IMX_AUDMUX_V2_PTCR_TFSDIR |
> + IMX_AUDMUX_V2_PTCR_TCLKDIR)
> + IMX_AUDMUX_V2_PDCR_RXDSEL(2)
> + >;
> + };
> +
> + aud3 {
> + fsl,audmux-port = <2>;
> + fsl,port-config = <
> + IMX_AUDMUX_V2_PTCR_SYN
> + IMX_AUDMUX_V2_PDCR_RXDSEL(0)
> + >;
> + };
> +};
> +
> +&fec {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_enet>;
> + phy-mode = "rgmii";
> + fsl,magic-packet;
> + status = "okay";
> +};
> +
> +&i2c1 {
> + clock-frequency = <400000>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c1>;
> + status = "okay";
> +
> + touchscreen@5d {
> + compatible = "goodix,gt911";
> + reg = <0x5d>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_ts>;
> + interrupt-parent = <&gpio1>;
> + interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
> + irq-gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
> + reset-gpios = <&gpio5 2 GPIO_ACTIVE_HIGH>;
> + };
> +
> + rtc: ds1307@32 {

ds1307: rtc@32

> + compatible = "dallas,ds1307";
> + reg = <0x32>;
> + };
> +};
> +
> +&i2c2 {
> + clock-frequency = <400000>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c2>;
> + status = "okay";
> +
> + codec: audio-codec@a {

I would suggest label be specific, something like:

sgtl5000: audio-codec@a

> + compatible = "fsl,sgtl5000";
> + #sound-dai-cells = <0>;
> + reg = <0x0a>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_codec>;
> + clocks = <&clks IMX6QDL_CLK_CKO>;
> + VDDA-supply = <&reg_3p3v>;
> + VDDIO-supply = <&reg_3p3v>;
> + };
> +};
> +
> +&iomuxc {
> + pinctrl_audmux: audmuxgrp {
> + fsl,pins = <
> + MX6QDL_PAD_CSI0_DAT7__AUD3_RXD 0x130b0
> + MX6QDL_PAD_CSI0_DAT4__AUD3_TXC 0x130b0
> + MX6QDL_PAD_CSI0_DAT5__AUD3_TXD 0x110b0
> + MX6QDL_PAD_CSI0_DAT6__AUD3_TXFS 0x130b0
> + >;
> + };
> +
> + pinctrl_codec: codecgrp {
> + fsl,pins = <
> + MX6QDL_PAD_EIM_BCLK__GPIO6_IO31 0x1b0b0
> + /* sgtl5000 sys_mclk clock routed to CLKO1 */
> + MX6QDL_PAD_GPIO_0__CCM_CLKO1 0x000b0
> + >;
> + };
> +
> + pinctrl_enet: enetgrp {
> + fsl,pins = <
> + MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b0b0
> + MX6QDL_PAD_ENET_MDC__ENET_MDC 0x1b0b0
> + MX6QDL_PAD_RGMII_TXC__RGMII_TXC 0x1b0b0
> + MX6QDL_PAD_RGMII_TD0__RGMII_TD0 0x1b0b0
> + MX6QDL_PAD_RGMII_TD1__RGMII_TD1 0x1b0b0
> + MX6QDL_PAD_RGMII_TD2__RGMII_TD2 0x1b0b0
> + MX6QDL_PAD_RGMII_TD3__RGMII_TD3 0x1b0b0
> + MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL 0x1b0b0
> + MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK 0x1b0b0
> + MX6QDL_PAD_RGMII_RXC__RGMII_RXC 0x1b0b0
> + MX6QDL_PAD_RGMII_RD0__RGMII_RD0 0x1b0b0
> + MX6QDL_PAD_RGMII_RD1__RGMII_RD1 0x1b0b0
> + MX6QDL_PAD_RGMII_RD2__RGMII_RD2 0x1b0b0
> + MX6QDL_PAD_RGMII_RD3__RGMII_RD3 0x1b0b0
> + MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x1b0b0
> + MX6QDL_PAD_GPIO_16__ENET_REF_CLK 0x4001b0a8
> + >;
> + };
> +
> + pinctrl_flexcan1: can1grp {
> + fsl,pins = <
> + MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x1b0b0
> + MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0x1b0b0
> + >;
> + };
> +
> + pinctrl_flexcan2: can2grp {
> + fsl,pins = <
> + MX6QDL_PAD_KEY_COL4__FLEXCAN2_TX 0x1b0b0
> + MX6QDL_PAD_KEY_ROW4__FLEXCAN2_RX 0x1b0b0
> + >;
> + };
> +
> + pinctrl_i2c1: i2c1grp {
> + fsl,pins = <
> + MX6QDL_PAD_CSI0_DAT8__I2C1_SDA 0x4001b8b1
> + MX6QDL_PAD_CSI0_DAT9__I2C1_SCL 0x4001b8b1
> + >;
> + };
> +
> + pinctrl_i2c2: i2c2grp {
> + fsl,pins = <
> + MX6QDL_PAD_KEY_COL3__I2C2_SCL 0x4001b8b1
> + MX6QDL_PAD_KEY_ROW3__I2C2_SDA 0x4001b8b1
> + >;
> + };
> +
> + pinctrl_ipu1: ipu1grp {
> + fsl,pins = <
> + MX6QDL_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK 0x10
> + MX6QDL_PAD_DI0_PIN15__IPU1_DI0_PIN15 0x10
> + MX6QDL_PAD_DI0_PIN2__IPU1_DI0_PIN02 0x10
> + MX6QDL_PAD_DI0_PIN3__IPU1_DI0_PIN03 0x10
> + MX6QDL_PAD_DISP0_DAT0__IPU1_DISP0_DATA00 0x10
> + MX6QDL_PAD_DISP0_DAT1__IPU1_DISP0_DATA01 0x10
> + MX6QDL_PAD_DISP0_DAT2__IPU1_DISP0_DATA02 0x10
> + MX6QDL_PAD_DISP0_DAT3__IPU1_DISP0_DATA03 0x10
> + MX6QDL_PAD_DISP0_DAT4__IPU1_DISP0_DATA04 0x10
> + MX6QDL_PAD_DISP0_DAT5__IPU1_DISP0_DATA05 0x10
> + MX6QDL_PAD_DISP0_DAT6__IPU1_DISP0_DATA06 0x10
> + MX6QDL_PAD_DISP0_DAT7__IPU1_DISP0_DATA07 0x10
> + MX6QDL_PAD_DISP0_DAT8__IPU1_DISP0_DATA08 0x10
> + MX6QDL_PAD_DISP0_DAT9__IPU1_DISP0_DATA09 0x10
> + MX6QDL_PAD_DISP0_DAT10__IPU1_DISP0_DATA10 0x10
> + MX6QDL_PAD_DISP0_DAT11__IPU1_DISP0_DATA11 0x10
> + MX6QDL_PAD_DISP0_DAT12__IPU1_DISP0_DATA12 0x10
> + MX6QDL_PAD_DISP0_DAT13__IPU1_DISP0_DATA13 0x10
> + MX6QDL_PAD_DISP0_DAT14__IPU1_DISP0_DATA14 0x10
> + MX6QDL_PAD_DISP0_DAT15__IPU1_DISP0_DATA15 0x10
> + MX6QDL_PAD_DISP0_DAT16__IPU1_DISP0_DATA16 0x10
> + MX6QDL_PAD_DISP0_DAT17__IPU1_DISP0_DATA17 0x10
> + MX6QDL_PAD_DISP0_DAT18__IPU1_DISP0_DATA18 0x10
> + MX6QDL_PAD_DISP0_DAT19__IPU1_DISP0_DATA19 0x10
> + MX6QDL_PAD_DISP0_DAT20__IPU1_DISP0_DATA20 0x10
> + MX6QDL_PAD_DISP0_DAT21__IPU1_DISP0_DATA21 0x10
> + MX6QDL_PAD_DISP0_DAT22__IPU1_DISP0_DATA22 0x10
> + MX6QDL_PAD_DISP0_DAT23__IPU1_DISP0_DATA23 0x10
> + >;
> + };
> +
> + pinctrl_pwm1: pwm1grp {
> + fsl,pins = <
> + MX6QDL_PAD_SD1_DAT3__PWM1_OUT 0x1b0b1
> + >;
> + };
> +
> + pinctrl_pwm2: pwm2grp {
> + fsl,pins = <
> + MX6QDL_PAD_SD1_DAT2__PWM2_OUT 0x1b0b1
> + >;
> + };
> +
> + pinctrl_ts: tsgrp {
> + fsl,pins = <
> + MX6QDL_PAD_GPIO_9__GPIO1_IO09 0x1b0b0
> + MX6QDL_PAD_EIM_A25__GPIO5_IO02 0x1b0b0
> + >;
> + };
> +
> + pinctrl_uart1: uart1grp {
> + fsl,pins = <
> + MX6QDL_PAD_SD3_DAT7__UART1_TX_DATA 0x1b0b1
> + MX6QDL_PAD_SD3_DAT6__UART1_RX_DATA 0x1b0b1
> + >;
> + };
> +
> + pinctrl_uart2: uart2grp {
> + fsl,pins = <
> + MX6QDL_PAD_EIM_D26__UART2_TX_DATA 0x1b0b1
> + MX6QDL_PAD_EIM_D27__UART2_RX_DATA 0x1b0b1
> + MX6QDL_PAD_EIM_D28__UART2_CTS_B 0x1b0b1
> + MX6QDL_PAD_EIM_D29__UART2_RTS_B 0x1b0b1
> + >;
> + };
> +
> + pinctrl_usdhc2: usdhc2grp {
> + fsl,pins = <
> + MX6QDL_PAD_SD2_CMD__SD2_CMD 0x17059
> + MX6QDL_PAD_SD2_CLK__SD2_CLK 0x10059
> + MX6QDL_PAD_SD2_DAT0__SD2_DATA0 0x17059
> + MX6QDL_PAD_SD2_DAT1__SD2_DATA1 0x17059
> + MX6QDL_PAD_SD2_DAT2__SD2_DATA2 0x17059
> + MX6QDL_PAD_SD2_DAT3__SD2_DATA3 0x17059
> + >;
> + };
> +
> + pinctrl_usdhc4: usdhc4grp {
> + fsl,pins = <
> + MX6QDL_PAD_SD4_CMD__SD4_CMD 0x17059
> + MX6QDL_PAD_SD4_CLK__SD4_CLK 0x10059
> + MX6QDL_PAD_SD4_DAT0__SD4_DATA0 0x17059
> + MX6QDL_PAD_SD4_DAT1__SD4_DATA1 0x17059
> + MX6QDL_PAD_SD4_DAT2__SD4_DATA2 0x17059
> + MX6QDL_PAD_SD4_DAT3__SD4_DATA3 0x17059
> + MX6QDL_PAD_SD4_DAT4__SD4_DATA4 0x17059
> + MX6QDL_PAD_SD4_DAT5__SD4_DATA5 0x17059
> + MX6QDL_PAD_SD4_DAT6__SD4_DATA6 0x17059
> + MX6QDL_PAD_SD4_DAT7__SD4_DATA7 0x17059
> + >;
> + };
> +};
> +
> +&can1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_flexcan1>;
> +};
> +
> +&can2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_flexcan2>;
> +};

These two nodes are not alphabetically sorted.

Shawn

> +
> +&pwm1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_pwm1>;
> + status = "okay";
> +};
> +
> +&pwm2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_pwm2>;
> + status = "okay";
> +};
> +
> +&ssi1 {
> + status = "okay";
> +};
> +
> +&uart1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart1>;
> + status = "okay";
> +};
> +
> +&uart2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart2>;
> + uart-has-rtscts;
> +};
> +
> +&usbh1 {
> + status = "okay";
> +};
> +
> +&usdhc2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usdhc2>;
> + bus-width = <4>;
> + cd-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
> + status = "okay";
> +};
> +
> +&usdhc4 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usdhc4>;
> + bus-width = <8>;
> + non-removable;
> + no-1-8-v;
> + keep-power-in-suspend;
> + status = "okay";
> +};
> +
> +&wdog1 {
> + status = "okay";
> +};
> --
> 2.11.0
>