From: Jeykumar Sankaran <jsanka@xxxxxxxxxxxxxx> Adds mdp transfer time to msm dsi binding Changes in v3: - Added Rob's R-b Reviewed-by: Rob Herring <robh@xxxxxxxxxx> Signed-off-by: Jeykumar Sankaran <jsanka@xxxxxxxxxxxxxx> Signed-off-by: Rajesh Yadav <ryadav@xxxxxxxxxxxxxx> Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx> --- .../devicetree/bindings/display/msm/dsi.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/Documentation/devicetree/bindings/display/msm/dsi.txt b/Documentation/devicetree/bindings/display/msm/dsi.txt index 518e9cdf0d4b..d22237a88eae 100644 --- a/Documentation/devicetree/bindings/display/msm/dsi.txt +++ b/Documentation/devicetree/bindings/display/msm/dsi.txt @@ -121,6 +121,20 @@ Required properties: Optional properties: - qcom,dsi-phy-regulator-ldo-mode: Boolean value indicating if the LDO mode PHY regulator is wanted. +- qcom,mdss-mdp-transfer-time-us: Specifies the dsi transfer time for command mode + panels in microseconds. Driver uses this number to adjust + the clock rate according to the expected transfer time. + Increasing this value would slow down the mdp processing + and can result in slower performance. + Decreasing this value can speed up the mdp processing, + but this can also impact power consumption. + As a rule this time should not be higher than the time + that would be expected with the processing at the + dsi link rate since anyways this would be the maximum + transfer time that could be achieved. + If ping pong split is enabled, this time should not be higher + than two times the dsi link rate time. + If the property is not specified, then the default value is 14000 us. [1] Documentation/devicetree/bindings/clock/clock-bindings.txt [2] Documentation/devicetree/bindings/graph.txt @@ -171,6 +185,8 @@ Example: qcom,master-dsi; qcom,sync-dual-dsi; + qcom,mdss-mdp-transfer-time-us = <12000>; + pinctrl-names = "default", "sleep"; pinctrl-0 = <&dsi_active>; pinctrl-1 = <&dsi_suspend>; -- Sean Paul, Software Engineer, Google / Chromium OS -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
