[v2,6/6] arm64: dts: sdm845: Add "no-hpd" to sn65dsi86 on cheza

Commit Message

Doug Anderson April 21, 2020, 5:06 a.m. UTC

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 <[e-mail]>
---

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(+)

Comments

Stephen Boyd April 22, 2020, 10:26 a.m. UTC | #1

Quoting Douglas Anderson (2020-04-20 22:06:22)
> 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 <[e-mail]>
> ---

Reviewed-by: Stephen Boyd <[e-mail]>

Patch

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>;