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    Subject[PATCH 5.13 300/351] arm64: dts: qcom: trogdor: Add no-hpd to DSI bridge node
    Date
    From: Stephen Boyd <swboyd@chromium.org>

    [ Upstream commit 5f551b5ce55575b14c26933fe9b49365ea246b3d ]

    We should indicate that we're not using the HPD pin on this device, per
    the binding document. Otherwise if code in the future wants to enable
    HPD in the bridge when this property is absent we'll be wasting power
    powering hpd when we don't use it on trogdor boards. We didn't notice
    this before because the kernel driver blindly disables hpd, but that
    won't be true for much longer.

    Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
    Reviewed-by: Douglas Anderson <dianders@chromium.org>
    Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
    Cc: Douglas Anderson <dianders@chromium.org>
    Fixes: 7ec3e67307f8 ("arm64: dts: qcom: sc7180-trogdor: add initial trogdor and lazor dt")
    Signed-off-by: Stephen Boyd <swboyd@chromium.org>
    Link: https://lore.kernel.org/r/20210324025534.1837405-1-swboyd@chromium.org
    Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
    index 24d293ef56d7..74d15789ce9a 100644
    --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
    +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
    @@ -655,6 +655,8 @@ edp_brij_i2c: &i2c2 {
    clocks = <&rpmhcc RPMH_LN_BB_CLK3>;
    clock-names = "refclk";

    + no-hpd;
    +
    ports {
    #address-cells = <1>;
    #size-cells = <0>;
    --
    2.30.2


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