[RFC PATCH 02/13] dt-bindings: msm/dsi: Document Display Stream Compression (DSC) parameters
From: Vinod Koul <vkoul@kernel.org>
Date: 2021-05-21 12:50:49
Also in:
dri-devel, linux-arm-msm, lkml
Subsystem:
drm driver for qualcomm display hardware, drm drivers, drm drivers and misc gpu patches, open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Clark, Dmitry Baryshkov, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
DSC enables streams to be compressed before we send to panel. This requires DSC enabled encoder and a panel to be present. So we add this information in board DTS and find if DSC can be enabled and the parameters required to configure DSC are added to binding document along with example Signed-off-by: Vinod Koul <vkoul@kernel.org> --- .../devicetree/bindings/display/msm/dsi.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/msm/dsi.txt b/Documentation/devicetree/bindings/display/msm/dsi.txt
index b9a64d3ff184..83d2fb92267e 100644
--- a/Documentation/devicetree/bindings/display/msm/dsi.txt
+++ b/Documentation/devicetree/bindings/display/msm/dsi.txt@@ -48,6 +48,13 @@ Optional properties: - pinctrl-n: the "sleep" pinctrl state - ports: contains DSI controller input and output ports as children, each containing one endpoint subnode. +- qcom,mdss-dsc-enabled: Display Stream Compression (DSC) is enabled +- qcom,mdss-slice-height: DSC slice height in pixels +- qcom,mdss-slice-width: DSC slice width in pixels +- qcom,mdss-slice-per-pkt: DSC slices per packet +- qcom,mdss-bit-per-component: DSC bits per component +- qcom,mdss-bit-per-pixel: DSC bits per pixel +- qcom,mdss-block-prediction-enable: Block prediction mode of DSC enabled DSI Endpoint properties: - remote-endpoint: For port@0, set to phandle of the connected panel/bridge's
@@ -188,6 +195,14 @@ Example: qcom,master-dsi; qcom,sync-dual-dsi; + qcom,mdss-dsc-enabled; + qcom,mdss-slice-height = <16>; + qcom,mdss-slice-width = <540>; + qcom,mdss-slice-per-pkt = <1>; + qcom,mdss-bit-per-component = <8>; + qcom,mdss-bit-per-pixel = <8>; + qcom,mdss-block-prediction-enable; + qcom,mdss-mdp-transfer-time-us = <12000>; pinctrl-names = "default", "sleep";
--
2.26.3