linux-kernel - Re: [PATCH] dt-bindings: i2c: qcom-cci: Document sc8280xp compatible

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Message-ID: <d689cbf6-d7e1-4f8a-94d9-fa2e0b8ecee3@linaro.org>
Date: Sat, 13 Apr 2024 23:13:08 +0300
From: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
To: Bryan O'Donoghue <bryan.odonoghue@...aro.org>, wsa@...nel.org,
 Loic Poulain <loic.poulain@...aro.org>, Robert Foss <rfoss@...nel.org>,
 Andi Shyti <andi.shyti@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Cc: linux-i2c@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: i2c: qcom-cci: Document sc8280xp compatible

Hi Bryan,

On 4/12/24 16:53, Bryan O'Donoghue wrote:
> Add sc8280xp compatible consistent with recent CAMSS CCI interfaces.
> 
> sc8280xp has the following clock list and so requires its own compat
> string and sc8280xp specific clock definition in the yaml.
> 
> - const: camnoc_axi
> - const: slow_ahb_src
> - const: cpas_ahb
> - const: cci
> 
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> ---
> Initially I added a compat string to yaml and driver for sc8280xp but, it
> was incomplete and wrong so I asked for a revert.
> 
> Subsequent to posting the compat string I had posted dtsi changes to
> sc8280xp to add in the CCI, forgetting to follow up on the compat revert.
> 
> I then completely forgot about the compat string and worse still
> misremembered the whole reasoning behind it.
> 
> This one patch series cleans up the mess.
> 
> - The fallback compat qcom,msm8916-cci hooks the driver.
>    Since there are no driver changes specific to sc8280xp we don't
>    need to add yet another entry to the CCI driver.
> 
> - The compat string qcom,sc8280xp-cci is additionally declared in
>    the dts -> compat = "qcom,msm8916-cci", "qcom,sc8280xp-cci";
>    The sc8280xp-cci will match the yaml and enforce constraints.
> 
> - The yaml entry for qcom,sc8280xp-cci constrains the list of
>    clocks which is specific to sc8280xp-cci
> 
> Result:
> 
> - No new redundant compat string in the CCI driver
> 
> - DTS is unchanged
> 
> - YAML expanded to capture missing string
> 

I believe it's excellent, thank you very much for the change and efforts!

Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>

--
Best wishes,
Vladimir