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Date: Mon, 21 Dec 2015 21:35:19 +0800
From: Shawn Guo <shawnguo@...nel.org>
To: Damien Riegel <damien.riegel@...oirfairelinux.com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Sascha Hauer <kernel@...gutronix.de>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Russell King <linux@....linux.org.uk>,
kernel@...oirfairelinux.com
Subject: Re: [PATCH 1/2] ARM: dts: ts-4800: Add LCD support
On Fri, Dec 18, 2015 at 12:00:32PM -0500, Damien Riegel wrote:
> This commit adds LCD support for the TS-4800. The panel is an Okaya
> RS800480T-7X0WQ and the timings have been extracted from Technologic
> Systems' tree.
>
> Signed-off-by: Damien Riegel <damien.riegel@...oirfairelinux.com>
> ---
> arch/arm/boot/dts/imx51-ts4800.dts | 109 +++++++++++++++++++++++++++++++++++++
> 1 file changed, 109 insertions(+)
>
> diff --git a/arch/arm/boot/dts/imx51-ts4800.dts b/arch/arm/boot/dts/imx51-ts4800.dts
> index 83352cb..4951ebd 100644
> --- a/arch/arm/boot/dts/imx51-ts4800.dts
> +++ b/arch/arm/boot/dts/imx51-ts4800.dts
> @@ -30,6 +30,60 @@
> clock-frequency = <24576000>;
> };
> };
> +
> + regulators {
> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + backlight_reg: regulator@0 {
> + compatible = "regulator-fixed";
> + reg = <0>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_enable_lcd>;
> + regulator-name = "enable_lcd_reg";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + gpio = <&gpio4 9 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + };
> + };
DT maintainers dislike this fake simple-bus container. Let's put the
regulator directly under root like below.
backlight_reg: regulator-backlight {
compatible = "regulator-fixed";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enable_lcd>;
regulator-name = "enable_lcd_reg";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio4 9 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
I fixed it up and applied both patches.
Shawn
> +
> + backlight: backlight {
> + compatible = "pwm-backlight";
> + pwms = <&pwm1 0 78770>;
> + brightness-levels = <0 150 200 255>;
> + default-brightness-level = <1>;
> + power-supply = <&backlight_reg>;
> + };
> +
> + display0: display@di0 {
> + compatible = "fsl,imx-parallel-display";
> + interface-pix-fmt = "rgb24";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_lcd>;
> +
> + display-timings {
> + 800x480p60 {
> + native-mode;
> + clock-frequency = <30066000>;
> + hactive = <800>;
> + vactive = <480>;
> + hfront-porch = <50>;
> + hback-porch = <70>;
> + hsync-len = <50>;
> + vback-porch = <0>;
> + vfront-porch = <0>;
> + vsync-len = <50>;
> + };
> + };
> +
> + port@0 {
> + display0_in: endpoint {
> + remote-endpoint = <&ipu_di0_disp0>;
> + };
> + };
> + };
> };
>
> &esdhc1 {
> @@ -60,6 +114,16 @@
> };
> };
>
> +&ipu_di0_disp0 {
> + remote-endpoint = <&display0_in>;
> +};
> +
> +&pwm1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_pwm_backlight>;
> + status = "okay";
> +};
> +
> &uart1 {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_uart1>;
> @@ -115,6 +179,12 @@
> >;
> };
>
> + pinctrl_enable_lcd: enablelcdgrp {
> + fsl,pins = <
> + MX51_PAD_CSI2_D12__GPIO4_9 0x1c5
> + >;
> + };
> +
> pinctrl_esdhc1: esdhc1grp {
> fsl,pins = <
> MX51_PAD_SD1_CMD__SD1_CMD 0x400020d5
> @@ -159,6 +229,45 @@
> >;
> };
>
> + pinctrl_lcd: lcdgrp {
> + fsl,pins = <
> + MX51_PAD_DISP1_DAT0__DISP1_DAT0 0x5
> + MX51_PAD_DISP1_DAT1__DISP1_DAT1 0x5
> + MX51_PAD_DISP1_DAT2__DISP1_DAT2 0x5
> + MX51_PAD_DISP1_DAT3__DISP1_DAT3 0x5
> + MX51_PAD_DISP1_DAT4__DISP1_DAT4 0x5
> + MX51_PAD_DISP1_DAT5__DISP1_DAT5 0x5
> + MX51_PAD_DISP1_DAT6__DISP1_DAT6 0x5
> + MX51_PAD_DISP1_DAT7__DISP1_DAT7 0x5
> + MX51_PAD_DISP1_DAT8__DISP1_DAT8 0x5
> + MX51_PAD_DISP1_DAT9__DISP1_DAT9 0x5
> + MX51_PAD_DISP1_DAT10__DISP1_DAT10 0x5
> + MX51_PAD_DISP1_DAT11__DISP1_DAT11 0x5
> + MX51_PAD_DISP1_DAT12__DISP1_DAT12 0x5
> + MX51_PAD_DISP1_DAT13__DISP1_DAT13 0x5
> + MX51_PAD_DISP1_DAT14__DISP1_DAT14 0x5
> + MX51_PAD_DISP1_DAT15__DISP1_DAT15 0x5
> + MX51_PAD_DISP1_DAT16__DISP1_DAT16 0x5
> + MX51_PAD_DISP1_DAT17__DISP1_DAT17 0x5
> + MX51_PAD_DISP1_DAT18__DISP1_DAT18 0x5
> + MX51_PAD_DISP1_DAT19__DISP1_DAT19 0x5
> + MX51_PAD_DISP1_DAT20__DISP1_DAT20 0x5
> + MX51_PAD_DISP1_DAT21__DISP1_DAT21 0x5
> + MX51_PAD_DISP1_DAT22__DISP1_DAT22 0x5
> + MX51_PAD_DISP1_DAT23__DISP1_DAT23 0x5
> + MX51_PAD_DI1_PIN2__DI1_PIN2 0x5
> + MX51_PAD_DI1_PIN3__DI1_PIN3 0x5
> + MX51_PAD_DI2_DISP_CLK__DI2_DISP_CLK 0x5
> + MX51_PAD_DI_GP4__DI2_PIN15 0x5
> + >;
> + };
> +
> + pinctrl_pwm_backlight: backlightgrp {
> + fsl,pins = <
> + MX51_PAD_GPIO1_2__PWM1_PWMO 0x80000000
> + >;
> + };
> +
> pinctrl_uart1: uart1grp {
> fsl,pins = <
> MX51_PAD_UART1_RXD__UART1_RXD 0x1c5
> --
> 2.5.0
>
>
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