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Date:   Tue, 05 Oct 2021 13:56:16 -0700
From:   abhinavk@codeaurora.org
To:     Bjorn Andersson <bjorn.andersson@linaro.org>
Cc:     Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Rob Herring <robh+dt@kernel.org>,
        Stephen Boyd <swboyd@chromium.org>,
        Kuogee Hsieh <khsieh@codeaurora.org>,
        Tanmay Shah <tanmay@codeaurora.org>,
        Chandan Uddaraju <chandanu@codeaurora.org>,
        linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
        freedreno@lists.freedesktop.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, Rob Herring <robh@kernel.org>
Subject: Re: [Freedreno] [PATCH v3 1/5] dt-bindings: msm/dp: Change reg
 definition
In-Reply-To: <20211001174400.981707-2-bjorn.andersson@linaro.org>
References: <20211001174400.981707-1-bjorn.andersson@linaro.org>
 <20211001174400.981707-2-bjorn.andersson@linaro.org>
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On 2021-10-01 10:43, Bjorn Andersson wrote:
> reg was defined as one region covering the entire DP block, but the
> memory map is actually split in 4 regions and obviously the size of
> these regions differs between platforms.
> 
> Switch the reg to require that all four regions are specified instead.
> It is expected that the implementation will handle existing DTBs, even
> though the schema defines the new layout.
> 
> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> Reviewed-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
> ---
> 
> Changes since v2:
> - None
> 
>  .../bindings/display/msm/dp-controller.yaml         | 13 +++++++++++--
>  1 file changed, 11 insertions(+), 2 deletions(-)
> 
> diff --git
> a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
> b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
> index d89b3c510c27..6bb424c21340 100644
> --- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
> +++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
> @@ -19,7 +19,12 @@ properties:
>        - qcom,sc7180-dp
> 
>    reg:
> -    maxItems: 1
> +    items:
> +      - description: ahb register block
> +      - description: aux register block
> +      - description: link register block
> +      - description: p0 register block
> +      - description: p1 register block
> 
>    interrupts:
>      maxItems: 1
> @@ -99,7 +104,11 @@ examples:
> 
>      displayport-controller@ae90000 {
>          compatible = "qcom,sc7180-dp";
> -        reg = <0xae90000 0x1400>;
> +        reg = <0xae90000 0x200>,
> +              <0xae90200 0x200>,
> +              <0xae90400 0xc00>,
> +              <0xae91000 0x400>,
> +              <0xae91400 0x400>;
>          interrupt-parent = <&mdss>;
>          interrupts = <12>;
>          clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,