linux-kernel - Re: [PATCH 1/2] dt-bindings: msm/dsi: Add ref clock for 10nm PHY

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Message-ID: <154154578082.88331.1035410665298962611@swboyd.mtv.corp.google.com>
Date:   Tue, 06 Nov 2018 15:09:40 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     David Airlie <airlied@...ux.ie>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Rob Clark <robdclark@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Archit Taneja <architt@...eaurora.org>,
        Sean Paul <seanpaul@...omium.org>,
        Rajesh Yadav <ryadav@...eaurora.org>,
        Douglas Anderson <dianders@...omium.org>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Matthias Kaehlcke <mka@...omium.org>
Subject: Re: [PATCH 1/2] dt-bindings: msm/dsi: Add ref clock for 10nm PHY

Quoting Matthias Kaehlcke (2018-11-02 14:45:33)
> Allow the 10nm PHY driver to get the ref clock from the DT.
> 
> Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
> ---
>  Documentation/devicetree/bindings/display/msm/dsi.txt | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/msm/dsi.txt b/Documentation/devicetree/bindings/display/msm/dsi.txt
> index dfc743219bd88..d0d2046ceff69 100644
> --- a/Documentation/devicetree/bindings/display/msm/dsi.txt
> +++ b/Documentation/devicetree/bindings/display/msm/dsi.txt
> @@ -105,6 +105,10 @@ Required properties:
>  - power-domains: Should be <&mmcc MDSS_GDSC>.
>  - clocks: Phandles to device clocks. See [1] for details on clock bindings.
>  - clock-names: the following clocks are required:
> +  For 10nm PHY:
> +  * "iface"
> +  * "ref"
> +  For other PHYs:
>    * "iface"

Any reason we can't go back and do this for other phys too? They're all
the same with regards to this reference clk input.

>    For 28nm HPM/LP, 28nm 8960 PHYs:
>  - vddio-supply: phandle to vdd-io regulator device node