linux-kernel - Re: [PATCH 2/2] ARM: dts: imx6q: Add Variscite MX6 Custom board support

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Date:   Wed, 19 Jul 2023 16:32:21 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     James Hilliard <james.hilliard1@...il.com>
Cc:     devicetree@...r.kernel.org,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        soc@...nel.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+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>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] ARM: dts: imx6q: Add Variscite MX6 Custom board support

Hi James,

On Wed, Jul 19, 2023 at 1:01 PM James Hilliard
<james.hilliard1@...il.com> wrote:
>
> This patch adds support for the Variscite 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
> - S-ATA
> - On-board DMIC
> - RS485 Header
> - CAN bus header
> - SPI header
> - Camera Interfaces header
> - OnBoard RTC with Coin Backup battery socket
> - RS232 Debug Header (IDC10)
> - RS232 DTE

Good, but what exactly has been tested?

> Product Page : https://www.variscite.com/product/single-board-computers/var-mx6customboard
>
> The dts file based on the ones provided by Variscite on their own
> kernel, but adapted for mainline.
>
> Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
> Signed-off-by: James Hilliard <james.hilliard1@...il.com>

Is this patch from you or Gregory? If Gregory is the author, then his
name should appear in the From: line.

> +&iomuxc {
> +       imx6qdl-var-som-mx6 {

This ' imx6qdl-var-som-mx6' should be dropped.

> +
> +               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_DI0_PIN4__IPU1_DI0_PIN04             0x80000000

No 0x80000000 please. Use the real pad ctl value instead.
This applies globally.

&mipi_csi {
> +       status = "okay";
> +       ipu_id = <0>;
> +       csi_id = <1>;
> +       v_channel = <0>;
> +       lanes = <2>;

These are all NXP vendor devicetree properties. They do not exist upstream.

> +       lvds-channel@0 {
> +               fsl,data-mapping = "spwg";
> +               fsl,data-width = <24>;
> +               status = "okay";
> +               primary;

This property does not exist upstream.

> +       lvds-channel@1 {
> +               fsl,data-mapping = "spwg";
> +               fsl,data-width = <24>;
> +               status = "okay";
> +               primary;

Ditto.

> +&usbphy1 {
> +       tx-d-cal = <0x5>;

In upstream it is called fsl,tx-d-cal.

> +};
> +
> +&usbphy2 {
> +       tx-d-cal = <0x5>;

Ditto.