linux-kernel - Re: [PATCH] dt-bindings: mfd: syscon: Add ti,k3-pcie-ctrl compatible

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Message-ID: <91737281-8249-4fcb-b5bf-750c015b7c24@ti.com>
Date: Thu, 1 Feb 2024 10:18:32 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: Andrew Davis <afd@...com>
CC: <lee@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>
Subject: Re: [PATCH] dt-bindings: mfd: syscon: Add ti,k3-pcie-ctrl compatible

Hello Andrew,

On 31/01/24 21:43, Andrew Davis wrote:
> On 1/31/24 5:23 AM, Siddharth Vadapalli wrote:
>> The PCIE_CTRL registers within the CTRL_MMR space of TI's K3 SoCs are
>> used to configure the link speed, lane count and mode of operation of
>> the respective PCIe instance. Add compatible for allowing the PCIe
>> driver to obtain a regmap for the PCIE_CTRL register within the System
>> Controller device-tree node in order to configure the PCIe instance
>> accordingly.
>>
>> Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
>> ---
>>
>> This patch is based on linux-next tagged next-20240131.
>>
>>   Documentation/devicetree/bindings/mfd/syscon.yaml | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/Documentation/devicetree/bindings/mfd/syscon.yaml
>> b/Documentation/devicetree/bindings/mfd/syscon.yaml
>> index 084b5c2a2a3c..da571a24e21f 100644
>> --- a/Documentation/devicetree/bindings/mfd/syscon.yaml
>> +++ b/Documentation/devicetree/bindings/mfd/syscon.yaml
>> @@ -73,6 +73,7 @@ properties:
>>                 - rockchip,rv1126-qos
>>                 - starfive,jh7100-sysmain
>>                 - ti,am654-dss-oldi-io-ctrl
>> +              - ti,k3-pcie-ctrl
> 
> This might not be the same for all K3 devices, you should use
> the name of the first device which uses this, so:
> 
> ti,j721e-pcie-ctrl

It is the same for all K3 devices so far. However, since the convention appears
to be the first device that it is applicable to as you pointed out, I will post
the v2 patch for this accordingly.

-- 
Regards,
Siddharth.