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Message-ID: <CAOMZO5CWSx_4SBJ=JoDRwJWJ+QojgV2DNPUo_qNwFHx-afCD6Q@mail.gmail.com>
Date: Thu, 21 Apr 2022 17:42:34 -0300
From: Fabio Estevam <festevam@...il.com>
To: Philip Oberfichtner <pro@...x.de>
Cc: "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
NXP Linux Team <linux-imx@....com>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@...ts.infradead.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
Winker Matthias <Matthias.Winker@...bosch.com>
Subject: Re: [PATCH v2 2/2] ARM: dts: Add bosch acc board
Hi Philip,
On Thu, Apr 21, 2022 at 9:26 AM Philip Oberfichtner <pro@...x.de> wrote:
>
> +/dts-v1/;
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/leds/common.h>
> +#include "imx6q.dtsi"
> +
> +/ {
> + model = "Bosch ACC";
> + compatible = "bosch,imx6q-acc", "fsl,imx6q";
> +
> + aliases {
> + serial0 = &uart2;
> + serial1 = &uart1;
> +
Unneeded blank line. Please remove it.
> + i2c0 = &i2c1;
> + i2c1 = &i2c2;
> + i2c2 = &i2c3;
> + /* eMMC is connected to USDHC interface 4, but shall get the name 0 */
Unneeded comment. Please remove it.
> + mmc0 = &usdhc4;
> + /* SC-Cards is connected to USDHC interface 2, but shall get the name 1 */
Ditto.
> + mmc1 = &usdhc2;
> + };
> +
> + backlight {
> + compatible = "pwm-backlight";
> + /* The last value is the PWM period in nano-seconds!
> + * -> 5 kHz = 200 µS = 200.000 ns
> + */
This is not the correct style for multi-line comments.
It should be:
/*
* bla bla
* bla bla
*/
Actually, I think you could just remove these comments.
> + pwms = <&pwm1 0 200000>;
> + brightness-levels = <0 61 499 1706 4079 8022 13938 22237 33328 47623 65535>;
> + num-interpolated-steps = <10>;
> + default-brightness-level = <60>;
> + power-supply = <®_lcd0_pwr>;
> + };
> +
> + refclk: refclk {
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> +
Unnecessary blank line.
> + clocks = <&clks IMX6QDL_CLK_CKO2>;
> + clock-div = <1>;
> + clock-mult = <1>;
> + clock-output-names = "12mhz_refclk";
Ditto.
> +
> + gpio-leds {
> + compatible = "gpio-leds";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_reset_gpio_led>;
> +
> + led-2 {
> + color = <LED_COLOR_ID_RED>;
> + gpios = <&gpio5 18 0>;
Better use GPIO label:
gpios = <&gpio5 18 GPIO_ACTIVE_HIGH>;
> + memory@...00000 {
> + device_type = "memory";
> + reg = <0x10000000 0x40000000>;
> + };
Please put the memory node below the alias.
> +
> + supply_5P0: regulator-0 {
Please check arch/arm/boot/dts/imx6qdl-sabresd.dtsi for a reference
on how to name the regulators.
> + soc {
> + aips1: bus@...0000 {};
Why is this needed?
> +&audmux {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_audmux>;
> + status = "okay";
Is this needed? I don't see audio support present on this board.
> +&fec {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_enet>;
> + status = "okay";
Please move the status property as the last one.
No need for blank lines.
> +
> + clocks = <&clks IMX6QDL_CLK_ENET>,
> + <&clks IMX6QDL_CLK_ENET>,
> + <&clks IMX6QDL_CLK_ENET>,
> + <&clks IMX6QDL_CLK_ENET_REF>;
> + clock-names = "ipg", "ahb", "ptp", "enet_out";
> + phy-mode = "rmii";
> + phy-supply = <&supply_sw4_3V3>;
> + phy-handle = <ðphy>;
> +
> + mdio {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + ethphy: ethernet-phy@0 {
> + compatible = "ethernet-phy-ieee802.3-c22";
> + reg = <0>;
> + interrupt-parent = <&gpio1>;
> + interrupts = <23 IRQ_TYPE_EDGE_FALLING>;
> + smsc,disable-energy-detect;
> + };
> + };
> +};
> + lm75: sensor@49 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_lm75>;
> +
Uneeded blank line.
> + pmic: pmic@8 {
> + compatible = "fsl,pfuze100";
> + reg = <0x08>;
> +
> + regulators {
> + /*
> + * VDD_CORE is connected to SW1 ABC
> + * We need to define sw1ab and sw1c, but later it is controlled solely with
> + * sw1c and therefore only this is named "VDD_SOC".
> + * See PMIC datasheet Rev. 18, chapter 6.4.4.3.1: "The feedback and all
> + * other controls are accomplished by use of pin SW1CFB and SW1C control
> + * registers, respectively."
> + * Setting min and max according to SOC datasheet
> + */
> + pmic_sw1abc: sw1c {
> + regulator-name = "VDD_SOC (sw1abc)";
> + regulator-min-microvolt = <1275000>;
> + regulator-max-microvolt = <1500000>;
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-ramp-delay = <6250>;
> +
> + default-voltage = <1300000>;
This is not a valid property.
> +
> + pmic_sw2: sw2 {
> + regulator-name = "VDD_ARM (sw2)";
> + regulator-min-microvolt = <1050000>;
> + regulator-max-microvolt = <1500000>;
> + regulator-boot-on;
> + regulator-always-on;
> + regulator-ramp-delay = <6250>;
> +
Unneeded blank line.
> + default-voltage = <1300000>;
Invalid property.
> +&i2c3 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c3>;
> + clock-frequency = <400000>;
> + status = "okay";
> +
> + exc3000: touchscreen@2a {
> + compatible = "eeti,exc3000";
> + reg = <0x2a>;
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_ctouch>;
> +
> + interrupt-parent = <&gpio4>;
> + interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
> +
> + touchscreen-size-x = <4096>;
> + touchscreen-size-y = <4096>;
Remove all the blank lines.
> +&iomuxc {
We usually put the iomuxc node as the last one.
> + pinctrl_gpio_export_gpio_fixed_in: pinctrl-gpio-export-gpio-fixed-in-grp {
Not referenced anywhere.
> + fsl,pins = <
> + MX6QDL_PAD_KEY_COL2__GPIO4_IO10 0x80000000 /* CLEAR ALL */
> + MX6QDL_PAD_CSI0_DAT4__GPIO5_IO22 0x80000000 /* DIG_IN_1 */
> + MX6QDL_PAD_CSI0_DAT5__GPIO5_IO23 0x80000000 /* DIG_IN_2 */
> + MX6QDL_PAD_SD3_CMD__GPIO7_IO02 0x80000000 /* PoE */
> + MX6QDL_PAD_SD3_CLK__GPIO7_IO03 0x80000000 /* PoE T2P */
> + >;
> + };
> +
> + pinctrl_reset_gpio_led: pinctrl-reset-gpio-led-pin {
pinctrl_reset_gpio_led: pinctrl-reset-gpio-led-grp
> + fsl,pins = <
> + MX6QDL_PAD_CSI0_PIXCLK__GPIO5_IO18 0x80000000
Please avoid 0x80000000. Use the real pad setting instead.
> + >;
> + };
> +
> + pinctrl_gpio_export_gpio_fixed_out: pinctrl-gpio-export-gpio-fixed-out-grp {
This is not called anywhere. Please check globally.
> + fsl,pins = <
> + MX6QDL_PAD_CSI0_DAT6__GPIO5_IO24 0x0001B0B0 /* DIG_OUT_1 */
0x1b0b0 for consistency. Please check globally.
> + pinctrl_i2c2: i2c2grp {
> + fsl,pins = <
> + MX6QDL_PAD_KEY_COL3__I2C2_SCL 0x4001b810
> + MX6QDL_PAD_KEY_ROW3__I2C2_SDA 0x4001b810
> + /* NO SRE | 130 Ohm | SPEED LOW | Open Drain | PKE | PUE | 100k PU | HYS */
No need for comment.
> + pinctrl_i2c2_gpio: i2c2-gpiogrp {
> + fsl,pins = <
> + MX6QDL_PAD_KEY_COL3__GPIO4_IO12 0x80000000
Avoid 0x80000000. Please check globally.
> + lvds0: lvds-channel@0 {
> + fsl,data-mapping = "spwg";
> + fsl,data-width = <24>;
> +
> + display-timings {
> + native-mode = <&lvds0_timing0>;
> + lvds0_timing0: timing0 {
> + clock-frequency = <79479000>;
Please add this panel support in drivers/gpu/drm/panel/panel-simple.c
and then reference its compatible here.
> +&sdma {
> + fsl,sdma-ram-script-name = "imx/sdma/sdma-imx6q.bin";
Why is this needed?
> + iram = <&ocram>;
Not a valid property for sdma.
> +&uart1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart1>;
> + status = "okay";
> +
> + rts-gpios = <&gpio7 8 0>;
Use GPIO label.
> + linux,rs485-enabled-at-boot-time;
> + rs485-rx-during-tx;
> +};
> +
> +&uart2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart2>;
> + fsl,uart-has-rtscts;
s/ fsl,uart-has-rtscts/uart-has-rtscts;
> +&usbh2 {
> + pinctrl-names = "idle", "active";
> + pinctrl-0 = <&pinctrl_usbh2_idle>;
> + pinctrl-1 = <&pinctrl_usbh2_active>;
> + status = "okay";
> +
> + vbus-supply = <®_usb_h2_vbus>;
> + osc-clkgate-delay = <0x3>;
Not a valid property.
> + pad-supply = <&vgen2_reg>;
Not a valid property.
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