linux-kernel - Re: [PATCH 1/2] dt-bindings: mfd: syscon: Add ti,dss-oldi-io-ctrl compatible

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Date:   Wed, 9 Aug 2023 23:09:49 +0530
From:   Aradhya Bhatia <a-bhatia1@...com>
To:     Andrew Davis <afd@...com>, Lee Jones <lee@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, Nishanth Menon <nm@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>
CC:     <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] dt-bindings: mfd: syscon: Add ti,dss-oldi-io-ctrl
 compatible

Hi Andrew,

Thank you for quickly whipping up these patches! =)

On 09-Aug-23 22:27, Andrew Davis wrote:
> Add TI DSS OLDI-IO control registers compatible. This is a region of 5
> 32bit registers found in the TI AM65 CTRL_MMR0 register space[0]. They
> are used to control the characteristics of the OLDI DATA/CLK IO as needed
> by the DSS display controller node.

As long as the driver takes care of it, we can reuse the same compatible
even when OLDI IO Ctrl registers change from SoC to SoC, (in this case,
AM65 to AM62), right?

Regards
Aradhya

> 
> [0] https://www.ti.com/lit/pdf/spruid7
> 
> Signed-off-by: Andrew Davis <afd@...com>
> ---
>  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 8103154bbb529..5029abd6d6411 100644
> --- a/Documentation/devicetree/bindings/mfd/syscon.yaml
> +++ b/Documentation/devicetree/bindings/mfd/syscon.yaml
> @@ -69,6 +69,7 @@ properties:
>                - rockchip,rk3588-qos
>                - rockchip,rv1126-qos
>                - starfive,jh7100-sysmain
> +              - ti,dss-oldi-io-ctrl
>  
>            - const: syscon
>