Re: [Freedreno] [PATCH v3 1/2] dt-bindings: display/msm: dsi-controller-main: Fix deprecated compatible

[Bryan O'Donoghue]

On 04/03/2023 17:35, Konrad Dybcio wrote:
you'll see no error. However if you just do this
diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi 
b/arch/arm64/boot/dts/qcom/msm8916.dtsi
index 0733c2f4f3798..829fbe05b5713 100644
--- a/arch/arm64/boot/dts/qcom/msm8916.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi
@@ -1094,8 +1094,7 @@ mdp5_intf1_out: endpoint {
                         };

                         dsi0: dsi@1a98000 {
-                               compatible = "qcom,msm8916-dsi-ctrl",
-                                            "qcom,mdss-dsi-ctrl";
+                               compatible = "qcom,mdss-dsi-ctrl";
                                 reg = <0x01a98000 0x25c>;
                                 reg-names = "dsi_ctrl";


and run the same test you get
Yes, correct. It's valid but it's deprecated, so the bindings are
sane. Keep in mind there's an ABI-like aspect to this.

Konrad

The _driver_ will still accept "qcom,mdss-dsi-ctrl" which is ABI 
compliant but, I don't see why the yaml should.

If you declare a new .dts with only "qcom,mdss-dsi-ctrl", that should 
throw a yaml check error.

---
bod