linux-kernel - RE: [EXT] Re: [PATCH v6 6/8] dt-bindings: phy: Add Freescale iMX8MQ DP and HDMI PHY

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Message-ID: <PAXPR04MB944896514084D079970CA829F45FA@PAXPR04MB9448.eurprd04.prod.outlook.com>
Date:   Mon, 19 Jun 2023 03:10:40 +0000
From:   Sandor Yu <sandor.yu@....com>
To:     Alexander Stein <alexander.stein@...tq-group.com>,
        "andrzej.hajda@...el.com" <andrzej.hajda@...el.com>,
        "neil.armstrong@...aro.org" <neil.armstrong@...aro.org>,
        "robert.foss@...aro.org" <robert.foss@...aro.org>,
        "Laurent.pinchart@...asonboard.com" 
        <Laurent.pinchart@...asonboard.com>,
        "jonas@...boo.se" <jonas@...boo.se>,
        "jernej.skrabec@...il.com" <jernej.skrabec@...il.com>,
        "airlied@...il.com" <airlied@...il.com>,
        "daniel@...ll.ch" <daniel@...ll.ch>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "vkoul@...nel.org" <vkoul@...nel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>
CC:     Oliver Brown <oliver.brown@....com>,
        dl-linux-imx <linux-imx@....com>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>
Subject: RE: [EXT] Re: [PATCH v6 6/8] dt-bindings: phy: Add Freescale iMX8MQ
 DP and HDMI PHY

Hi Alexander,

Thanks for your comments,

> -----Original Message-----
> From: Alexander Stein <alexander.stein@...tq-group.com>
> Sent: 2023年6月16日 17:35
> To: andrzej.hajda@...el.com; neil.armstrong@...aro.org;
> robert.foss@...aro.org; Laurent.pinchart@...asonboard.com;
> jonas@...boo.se; jernej.skrabec@...il.com; airlied@...il.com;
> daniel@...ll.ch; robh+dt@...nel.org; krzysztof.kozlowski+dt@...aro.org;
> shawnguo@...nel.org; s.hauer@...gutronix.de; festevam@...il.com;
> vkoul@...nel.org; dri-devel@...ts.freedesktop.org;
> devicetree@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> linux-kernel@...r.kernel.org; linux-phy@...ts.infradead.org
> Cc: Oliver Brown <oliver.brown@....com>; Sandor Yu <sandor.yu@....com>;
> dl-linux-imx <linux-imx@....com>; kernel@...gutronix.de; Sandor Yu
> <sandor.yu@....com>
> Subject: [EXT] Re: [PATCH v6 6/8] dt-bindings: phy: Add Freescale iMX8MQ DP
> and HDMI PHY
>
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report
> this email' button
>
>
> Hi Sandor,
>
> Am Donnerstag, 15. Juni 2023, 03:38:16 CEST schrieb Sandor Yu:
> > Add bindings for Freescale iMX8MQ DP and HDMI PHY.
> >
> > Signed-off-by: Sandor Yu <Sandor.yu@....com>
> > ---
> >  .../bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml  | 53
> > +++++++++++++++++++
> >  1 file changed, 53 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
> > b/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yaml
> > new file mode 100644 index 000000000000..917f113503dc
> > --- /dev/null
> > +++
> b/Documentation/devicetree/bindings/phy/fsl,imx8mq-dp-hdmi-phy.yam
> > +++ l
> > @@ -0,0 +1,53 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id:
> > +http://devi/
> >
> +cetree.org%2Fschemas%2Fphy%2Ffsl%2Cimx8mq-dp-hdmi-phy.yaml%23&d
> ata=05
> >
> +%7C01%7CSandor.yu%40nxp.com%7Cf2d4e5ea99fa4f5776bf08db6e4ce7ba
> %7C686e
> >
> +a1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638225048817792176%7C
> Unknown%7
> >
> +CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haW
> wiLCJX
> >
> +VCI6Mn0%3D%7C3000%7C%7C%7C&sdata=ayYA0rayDR2w1LDgU53VtCitw
> MH9PnoblX2k
> > +Jhbu6Gs%3D&reserved=0
> > +$schema:
> > +http://devi/
> >
> +cetree.org%2Fmeta-schemas%2Fcore.yaml%23&data=05%7C01%7CSandor.
> yu%40n
> >
> +xp.com%7Cf2d4e5ea99fa4f5776bf08db6e4ce7ba%7C686ea1d3bc2b4c6fa92
> cd99c5
> >
> +c301635%7C0%7C0%7C638225048817792176%7CUnknown%7CTWFpbGZs
> b3d8eyJWIjoi
> >
> +MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3
> 000%7C%
> >
> +7C%7C&sdata=DagQtrIblGEk3T1mamSmI2010SRszqhIpJ4piXy3L4M%3D&re
> served=0
> > +
> > +title: Cadence HDP-TX DP/HDMI PHY for Freescale i.MX8MQ SoC
> > +
> > +maintainers:
> > +  - Sandor Yu <sandor.yu@....com>
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - fsl,imx8mq-dp-phy
> > +      - fsl,imx8mq-hdmi-phy
>
> How is it intended to select DP or HDMI? E.g. provide a single default dp-phy
> node in imx8mq.dtsi and change the compatible to HDMI on board-level?
>
The PHY driver select should align with HDMI/DP driver base on board type.
For HDMI board:  fsl,imx8mq-hdmi-phy + fsl,imx8mq-mhdp8501-hdmi
For DP board:     fsl,imx8mq-dp-phy + fsl,imx8mq-mhdp8501-dp

B.R
Sandor

> Best regards,
> Alexander
>
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    items:
> > +      - description: PHY reference clock.
> > +      - description: APB clock.
> > +
> > +  clock-names:
> > +    items:
> > +      - const: ref
> > +      - const: apb
> > +
> > +  "#phy-cells":
> > +    const: 0
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - clocks
> > +  - clock-names
> > +  - "#phy-cells"
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/imx8mq-clock.h>
> > +    #include <dt-bindings/phy/phy.h>
> > +    dp_phy: phy@...00000 {
> > +        compatible = "fsl,imx8mq-dp-phy";
> > +        reg = <0x32c00000 0x100000>;
> > +        #phy-cells = <0>;
> > +        clocks = <&hdmi_phy_27m>, <&clk
> IMX8MQ_CLK_DISP_APB_ROOT>;
> > +        clock-names = "ref", "apb";
> > +    };
>
>
> --
> TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> Amtsgericht München, HRB 105018
> Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> http://www.tq/
> -group.com%2F&data=05%7C01%7CSandor.yu%40nxp.com%7Cf2d4e5ea99fa
> 4f5776bf08db6e4ce7ba%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C
> 0%7C638225048817792176%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w
> LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C
> %7C%7C&sdata=6uih84XByS6aX519z7l50amZl2XnPIMSggyfSD4xd4M%3D&re
> served=0
>