[PATCH 2/9] dt-bindings: msm/dpu: Add simple-bus to dpu bindings

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We have a whole bunch of child devices that we really just want
treated as other devices to instantiate.  Add the "simple-bus"
property for this.

Commit-notes
This bindings file really needs to move over to yaml.  Hopefully
someone at Qualcomm who's working on display code can help with that.

Right now on Linux we have a manual call to of_platform_populate() to
populate our children.  That's pretty non-ideal as described in
another patch in this series and I'm trying to remove it.

I'm not sure how much of a hack to consider "simple-bus".  I've seen
it used like this before, but if folks tell me that it's terrible then
I guess we'll have to figure some other way out of our crazy
-EPROBE_DEFER loop in Linux.
END

Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---

 Documentation/devicetree/bindings/display/msm/dpu.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/msm/dpu.txt b/Documentation/devicetree/bindings/display/msm/dpu.txt
index 551ae26f60da..b88269524365 100644
--- a/Documentation/devicetree/bindings/display/msm/dpu.txt
+++ b/Documentation/devicetree/bindings/display/msm/dpu.txt
@@ -8,7 +8,9 @@ The DPU display controller is found in SDM845 SoC.
 
 MDSS:
 Required properties:
-- compatible:  "qcom,sdm845-mdss", "qcom,sc7180-mdss"
+- compatible:  One of:
+  - "qcom,sdm845-mdss", "simple-bus"
+  - "qcom,sc7180-mdss", "simple-bus"
 - reg: physical base address and length of contoller's registers.
 - reg-names: register region names. The following region is required:
   * "mdss"
-- 
2.27.0.383.g050319c2ae-goog




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