linux-kernel - [PATCH v3 6/6] arm64: dts: sdm845: Add "no-hpd" to sn65dsi86 on cheza

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Message-Id: <20200423092431.v3.6.I89df9b6094549b8149aa8b8347f7401c678055b0@changeid>
Date:   Thu, 23 Apr 2020 09:25:48 -0700
From:   Douglas Anderson <dianders@...omium.org>
To:     linus.walleij@...aro.org, bgolaszewski@...libre.com,
        airlied@...ux.ie, daniel@...ll.ch, robh+dt@...nel.org,
        narmstrong@...libre.com, a.hajda@...sung.com,
        Laurent.pinchart@...asonboard.com, spanda@...eaurora.org
Cc:     swboyd@...omium.org, devicetree@...r.kernel.org,
        linux-gpio@...r.kernel.org, jeffrey.l.hugo@...il.com,
        dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        robdclark@...omium.org, jernej.skrabec@...l.net, jonas@...boo.se,
        bjorn.andersson@...aro.org,
        Douglas Anderson <dianders@...omium.org>,
        Andy Gross <agross@...nel.org>, linux-kernel@...r.kernel.org
Subject: [PATCH v3 6/6] arm64: dts: sdm845: Add "no-hpd" to sn65dsi86 on cheza

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@...omium.org>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
---

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>;
-- 
2.26.1.301.g55bc3eb7cb9-goog