| Message ID | 20200507143354.v5.6.I89df9b6094549b8149aa8b8347f7401c678055b0@changeid (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm: Prepare to use a GPIO on ti-sn65dsi86 for Hot Plug Detect | expand |
On Thu 07 May 14:35 PDT 2020, Douglas Anderson wrote: > We don't have the HPD line hooked up to the bridge chip. Add it as > suggested in the patch ("dt-bindings: drm/bridge: ti-sn65dsi86: > Document no-hpd"). > > NOTE: this patch isn't expected to have any effect but just keeps us > cleaner for the future. Currently the driver in Linux just assumes > that nobody has HPD hooked up. This change allows us to later > implement HPD support in the driver without messing up sdm845-cheza. > > Signed-off-by: Douglas Anderson <dianders@chromium.org> > Reviewed-by: Stephen Boyd <swboyd@chromium.org> Applied this patch for 5.8 in the Qualcomm SoC tree. Regards, Bjorn > --- > > Changes in v5: None > Changes in v4: None > Changes in v3: None > Changes in v2: > - ("arm64: dts: sdm845: Add "no-hpd" to sn65dsi86 on cheza") new for v2. > > arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi > index 9070be43a309..5938f8b2aa2f 100644 > --- a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi > +++ b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi > @@ -548,6 +548,8 @@ sn65dsi86_bridge: bridge@2d { > clocks = <&rpmhcc RPMH_LN_BB_CLK2>; > clock-names = "refclk"; > > + no-hpd; > + > ports { > #address-cells = <1>; > #size-cells = <0>; > -- > 2.26.2.645.ge9eca65c58-goog >
diff --git a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi index 9070be43a309..5938f8b2aa2f 100644 --- a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi @@ -548,6 +548,8 @@ sn65dsi86_bridge: bridge@2d { clocks = <&rpmhcc RPMH_LN_BB_CLK2>; clock-names = "refclk"; + no-hpd; + ports { #address-cells = <1>; #size-cells = <0>;
We don't have the HPD line hooked up to the bridge chip. Add it as suggested in the patch ("dt-bindings: drm/bridge: ti-sn65dsi86: Document no-hpd"). NOTE: this patch isn't expected to have any effect but just keeps us cleaner for the future. Currently the driver in Linux just assumes that nobody has HPD hooked up. This change allows us to later implement HPD support in the driver without messing up sdm845-cheza. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> --- Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: - ("arm64: dts: sdm845: Add "no-hpd" to sn65dsi86 on cheza") new for v2. arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi | 2 ++ 1 file changed, 2 insertions(+)