linux-kernel - Re: [PATCH v5 3/5] arm64: dts: ti: k3-j784s4: Add WIZ and SERDES PHY nodes

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Message-ID: <20230713182107.ashuygyg4x4j77s5@backboard>
Date:   Thu, 13 Jul 2023 13:21:07 -0500
From:   Nishanth Menon <nm@...com>
To:     Jayesh Choudhary <j-choudhary@...com>
CC:     <vigneshr@...com>, <krzysztof.kozlowski+dt@...aro.org>,
        <afd@...com>, <s-vadapalli@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 3/5] arm64: dts: ti: k3-j784s4: Add WIZ and SERDES PHY
 nodes

On 21:01-20230713, Jayesh Choudhary wrote:
> 
> 
> On 12/07/23 19:48, Nishanth Menon wrote:
> > On 15:47-20230710, Jayesh Choudhary wrote:
> > > From: Siddharth Vadapalli <s-vadapalli@...com>
> > > 
> > > J784S4 SoC has 4 Serdes instances along with their respective WIZ
> > > instances. Add device-tree nodes for them and disable them by default.
> > > 
> > > Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
> > > [j-choudhary@...com: fix serdes_wiz clock order]
> > > Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
> > > ---
> > NAK. This patch introduces the following dtbs_check warning.
> > arch/arm64/boot/dts/ti/k3-am69-sk.dtb: serdes-refclk: 'clock-frequency' is a required property
> > 
> 
> Sorry for this. This property was added in the final board file.
> I will fix it in the next revision.
> I will add '0' as clock-property in the main file similar to j721e[1]
> which will be overridden in the board file with required value to get
> rid of this warning.

That would follow what renesas (r8a774a1.dtsi) and imx
(imx8dxl-ss-conn.dtsi) seem to be doing as well. Just make sure to add
documentation to the property to indicate expectation. Unless someone
has objections to this approach.

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D