[PATCH v2 02/18] dt-bindings: msm: dsi-controller-main: Fix power-domain constraint

[Bryan O'Donoghue]

power-domain is required for the sc7180 dispcc GDSC but not every qcom SoC
has a similar dependency for example the aqp8064.

Most Qcom SoC's using mdss-dsi-ctrl seem to have the ability to
power-collapse the MDP without collapsing DSI.

For example the qcom vendor kernel commit for apq8084, msm8226, msm8916, msm8974

https://review.carbonrom.org/plugins/gitiles/CarbonROM/android_kernel_oneplus_msm8994/+/7b5c011a770daa2811778937ed646237a28a8694

"ARM: dts: msm: add mdss gdsc supply to dsi controller device

 It is possible for the DSI controller to be active when MDP is
 power collapsed. DSI controller needs to have it's own vote for
 mdss gdsc to ensure that gdsc remains on in such cases."

This however doesn't appear to be the case for the apq8064 so we shouldn't
be marking power-domain as required in yaml checks.

Fixes: 4dbe55c97741 ("dt-bindings: msm: dsi: add yaml schemas for DSI bindings")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
Cc: Rob Clark <robdclark at gmail.com>
Cc: Abhinav Kumar <quic_abhinavk at quicinc.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
Cc: Sean Paul <sean at poorly.run>
Cc: David Airlie <airlied at gmail.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt at linaro.org>
Cc: linux-arm-msm at vger.kernel.org
Cc: dri-devel at lists.freedesktop.org
Cc: freedreno at lists.freedesktop.org
Cc: devicetree at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>
---
 .../devicetree/bindings/display/msm/dsi-controller-main.yaml     | 1 -
 1 file changed, 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
index 27ebfd5ffb22f..cf782c5f5bdb0 100644
--- a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
@@ -134,7 +134,6 @@ required:
   - phys
   - assigned-clocks
   - assigned-clock-parents
-  - power-domains
   - ports
 
 additionalProperties: false
-- 
2.38.1