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Message-ID:
<PAXPR04MB9448F3065AE9F838C4553CB1F4572@PAXPR04MB9448.eurprd04.prod.outlook.com>
Date: Wed, 21 Feb 2024 07:46:46 +0000
From: Sandor Yu <sandor.yu@....com>
To: Alexander Stein <alexander.stein@...tq-group.com>,
"dmitry.baryshkov@...aro.org" <dmitry.baryshkov@...aro.org>,
"andrzej.hajda@...el.com" <andrzej.hajda@...el.com>,
"neil.armstrong@...aro.org" <neil.armstrong@...aro.org>, Laurent Pinchart
<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: "kernel@...gutronix.de" <kernel@...gutronix.de>, dl-linux-imx
<linux-imx@....com>, Oliver Brown <oliver.brown@....com>, "sam@...nborg.org"
<sam@...nborg.org>, Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v14 5/7] dt-bindings: phy: Add Freescale iMX8MQ DP and
HDMI PHY
Hi Alexander,
Thanks for your comments,
>
>
> Hi,
>
> thanks for the update.
>
> Am Dienstag, 20. Februar 2024, 04:23:53 CET schrieb Sandor Yu:
> > Add bindings for Freescale iMX8MQ DP and HDMI PHY.
> >
> > Signed-off-by: Sandor Yu <Sandor.yu@....com>
> > Reviewed-by: Rob Herring <robh@...nel.org>
> > ---
> > v9->v14:
> > *No change.
> >
> > .../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 0000000000000..917f113503dca
> > --- /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
> > +---
> > +$id:
> > +http://devi/
> >
> +cetree.org%2Fschemas%2Fphy%2Ffsl%2Cimx8mq-dp-hdmi-phy.yaml%23&da
> ta=05
> >
> +%7C02%7CSandor.yu%40nxp.com%7Ce79b4d15c204494963c508dc31fbab5d
> %7C686e
> >
> +a1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638440204190687801%7C
> Unknown%7
> >
> +CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWw
> iLCJX
> >
> +VCI6Mn0%3D%7C0%7C%7C%7C&sdata=rKWiYc1wbOvKMO%2BWnvT6agxo
> 9V%2B1ndZVTxh
> > +gLT0g7h8%3D&reserved=0
> > +$schema:
> > +http://devi/
> >
> +cetree.org%2Fmeta-schemas%2Fcore.yaml%23&data=05%7C02%7CSandor.y
> u%40n
> >
> +xp.com%7Ce79b4d15c204494963c508dc31fbab5d%7C686ea1d3bc2b4c6fa9
> 2cd99c5
> >
> +c301635%7C0%7C0%7C638440204190709341%7CUnknown%7CTWFpbGZsb
> 3d8eyJWIjoi
> >
> +MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0
> %7C%7C%
> >
> +7C&sdata=%2FuCSz0aVVsRLorOqrorbZIyT7iU5BavPKCbA9qL9qDI%3D&reserv
> ed=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
>
> While reading cdns-mhdp8501-core.c I'm not so sure about this. There is only
> a single PHY which can be configured for either DP or HDMI.
> Using separate compatibles for that somehow bugs me.
> Maybe the DT maintainers can add some input if this should be single or
> double compatibles.
>
When user enable MHDP8501 HDMI or DP, he should clearly know which type he want to enable,
>From board type, flash.bin(firmware) to dts(connector and phy type), they are all need align to HDMI or DP.
B.R
Sandor
> Thanks and 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%7C02%7CSandor.yu%40nxp.com%7Ce79b4d15c2044
> 94963c508dc31fbab5d%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0
> %7C638440204190726471%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjA
> wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7
> C&sdata=7xs1%2FC%2BK1cSFDc3rlBEZdNBsYw6Gc8AR6CWr2Djz4s0%3D&res
> erved=0
>
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