Commit bb45bb97 authored by Bjorn Andersson's avatar Bjorn Andersson Committed by Bjorn Andersson

arm64: dts: qcom: sc8280xp: Use MMCX for all DP controllers

While MDSS_GDSC is a subdomain of MMCX, Linux does not respect this
relationship and sometimes invokes sync_state on the rpmhpd (MMCX)
before the DisplayPort controller has had a chance to probe.

The result when this happens is that the power is lost to the multimedia
subsystem between the probe of msm_drv and the DisplayPort controller -
which results in an irrecoverable state.

While this is an implementation problem, this aligns the power domain
setting of the one DP instance with that of all the others.

Fixes: 57d6ef68 ("arm64: dts: qcom: sc8280xp: Define some of the display blocks")
Signed-off-by: default avatarBjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: default avatarJohan Hovold <johan+linaro@kernel.org>
Reviewed-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230112135055.3836555-1-quic_bjorande@quicinc.com
parent e15a8158
......@@ -2564,7 +2564,7 @@ mdss0_dp3: displayport-controller@aea0000 {
interrupts = <15>;
phys = <&mdss0_dp3_phy>;
phy-names = "dp";
power-domains = <&dispcc0 MDSS_GDSC>;
power-domains = <&rpmhpd SC8280XP_MMCX>;
assigned-clocks = <&dispcc0 DISP_CC_MDSS_DPTX3_LINK_CLK_SRC>,
<&dispcc0 DISP_CC_MDSS_DPTX3_PIXEL0_CLK_SRC>;
......
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