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Date:   Fri, 24 Nov 2017 15:41:47 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 5/6] ARM: dts: imx6q: Add Variscite DART-MX6
 Carrier-board support

On 24/11/2017 15:33, Fabio Estevam wrote:
> On Wed, Nov 22, 2017 at 9:02 AM, Neil Armstrong <narmstrong@...libre.com> wrote:
>> This patch adds support for the i.MX6 Quad variant of the Variscite DART-MX6
>> SoM Carrier-Board.
>>
>> This Carrier-Board has the following :
>> - LVDS interface for the VLCD-CAP-GLD-LVDS 7" LCD 800 x 480 touch display
>> - HDMI Connector
>> - USB Host + USB OTG Connector
>> - 10/100/1000 Mbps Ethernet
>> - miniPCI-Express slot
>> - SD Card connector
>> - Audio Headphone/Line In jack connectors
>> - On-board DMIC
>> - CAN bus header
>> - SPI header
>> - Camera Interfaces header
>> - 4xButtons, 2xLeds
>> - OnBoard RTC with Coin Backup battery socket
>> - RS232 Header + USB-Serial debug port
>>
>> Product Page : http://www.variscite.com/products/evaluation-kits/dart-mx6-kits
>>
>> The board support is done with all on-board and header interfaces enabled.
>> 7" LVDS Touchscreen is enabled by default along HDMI output.
>> Audio interface is supported with the "simple-card" bindings.
>>
>> PCIe slot, On-Board DMIC and Camera Interfaces are not handled yet.
>>
>> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
>> ---
>>  arch/arm/boot/dts/Makefile                     |   1 +
>>  arch/arm/boot/dts/imx6q-var-dt6customboard.dts | 238 +++++++++++++++++++++++++
>>  2 files changed, 239 insertions(+)
>>  create mode 100644 arch/arm/boot/dts/imx6q-var-dt6customboard.dts
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index d0381e9..148ff15 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -470,6 +470,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
>>         imx6q-tx6q-11x0-mb7.dtb \
>>         imx6q-udoo.dtb \
>>         imx6q-utilite-pro.dtb \
>> +       imx6q-var-dt6customboard.dtb \
>>         imx6q-wandboard.dtb \
>>         imx6q-wandboard-revb1.dtb \
>>         imx6q-wandboard-revd1.dtb \
>> diff --git a/arch/arm/boot/dts/imx6q-var-dt6customboard.dts b/arch/arm/boot/dts/imx6q-var-dt6customboard.dts
>> new file mode 100644
>> index 0000000..de01755
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/imx6q-var-dt6customboard.dts
>> @@ -0,0 +1,238 @@
>> +/*
>> + * Support for Variscite DART-MX6 Carrier-board
>> + *
>> + * Copyright 2017 BayLibre, SAS
>> + * Author: Neil Armstrong <narmstrong@...libre.com>
>> + *
>> + * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "imx6q.dtsi"
>> +#include "imx6qdl-var-dart.dtsi"
>> +#include <dt-bindings/input/linux-event-codes.h>
>> +
>> +/ {
>> +       model = "Variscite DART-MX6 Carrier-board";
>> +       compatible = "variscite,dt6customboard", "fsl,imx6q";
>> +
>> +       backlight_lvds: backlight {
>> +               compatible = "pwm-backlight";
>> +               pwms = <&pwm2 0 50000>;
>> +               brightness-levels = <0 4 8 16 32 64 128 248>;
>> +               default-brightness-level = <7>;
>> +               status = "okay";
>> +       };
>> +
>> +       gpio-keys {
>> +               compatible = "gpio-keys";
>> +               #address-cells = <1>;
>> +               #size-cells = <0>;
>> +               autorepeat;
>> +
>> +               back {
>> +                       gpios = <&gpio4 26 GPIO_ACTIVE_LOW>;
>> +                       linux,code = <KEY_BACK>;
>> +                       label = "Key Back";
>> +                       linux,input-type = <1>;
>> +                       debounce-interval = <100>;
>> +                       gpio-key,wakeup;
>> +               };
>> +
>> +               home {
>> +                       gpios = <&gpio5 11 GPIO_ACTIVE_LOW>;
>> +                       linux,code = <KEY_HOME>;
>> +                       label = "Key Home";
>> +                       linux,input-type = <1>;
>> +                       debounce-interval = <100>;
>> +                       gpio-key,wakeup;
>> +               };
>> +
>> +               menu {
>> +                       gpios = <&gpio4 25 GPIO_ACTIVE_LOW>;
>> +                       linux,code = <KEY_MENU>;
>> +                       label = "Key Menu";
>> +                       linux,input-type = <1>;
>> +                       debounce-interval = <100>;
>> +                       gpio-key,wakeup;
>> +               };
>> +       };
>> +
>> +       gpio-leds {
>> +               compatible = "gpio-leds";
>> +
>> +               led1 {
>> +                       gpios = <&gpio4 27 GPIO_ACTIVE_HIGH>;
>> +                       linux,default-trigger = "heartbeat";
>> +               };
>> +
>> +               led2 {
>> +                       gpios = <&gpio4 28 GPIO_ACTIVE_HIGH>;
>> +                       linux,default-trigger = "default-on";
>> +               };
>> +       };
>> +
>> +       panel1: lvds-panel {
>> +               compatible = "sgd,gktw70sdae4se", "panel-lvds";
>> +               backlight = <&backlight_lvds>;
>> +
>> +               width-mm = <153>;
>> +               height-mm = <86>;
>> +
>> +               label = "gktw70sdae4se";
>> +
>> +               data-mapping = "jeida-18";
>> +
>> +               panel-timing {
>> +                       clock-frequency = <32000000>;
>> +                       hactive = <800>;
>> +                       vactive = <480>;
>> +                       hback-porch = <39>;
>> +                       hfront-porch = <39>;
>> +                       vback-porch = <29>;
>> +                       vfront-porch = <13>;
>> +                       hsync-len = <47>;
>> +                       vsync-len = <2>;
>> +               };
>> +
>> +               port {
>> +                       panel_in: endpoint {
>> +                               remote-endpoint = <&lvds1_out>;
>> +                       };
>> +               };
>> +       };
>> +
>> +       reg_usb_h1_vbus: regulator-usbh1vbus {
>> +               compatible = "regulator-fixed";
>> +               regulator-name = "usb_h1_vbus";
>> +               regulator-min-microvolt = <5000000>;
>> +               regulator-max-microvolt = <5000000>;
>> +               gpio = <&gpio1 28 GPIO_ACTIVE_HIGH>;
> 
> Is this really GPIO_ACTIVE_HIGH?
> 
> If so, then a 'enable-active-high' property would be needed.

Ok.

> 
>> +       };
>> +
>> +       reg_usb_otg_vbus: regulator-usbotgvbus {
>> +               compatible = "regulator-fixed";
>> +               regulator-name = "usb_otg_vbus";
>> +               regulator-min-microvolt = <5000000>;
>> +               regulator-max-microvolt = <5000000>;
>> +               gpio = <&gpio4 15 GPIO_ACTIVE_HIGH>;
> 
> Ditto.
> 

Ok.

Thanks,
Neil

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