Re: [PATCH v3 1/4] dt-bindings: display: mediatek: add property to control mipi tx drive current
From: Rob Herring <robh@kernel.org>
Date: 2020-03-23 22:00:38
Also in:
dri-devel, linux-devicetree, linux-mediatek, lkml
On Wed, Mar 11, 2020 at 03:40:29PM +0800, Jitao Shi wrote:
quoted hunk ↗ jump to hunk
Add a property to control mipi tx drive current: "drive-strength-microamp" Signed-off-by: Jitao Shi <redacted> --- .../devicetree/bindings/display/mediatek/mediatek,dsi.txt | 4 ++++ 1 file changed, 4 insertions(+)diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt index a19a6cc375ed..d501f9ff4b1f 100644 --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt@@ -33,6 +33,9 @@ Required properties: - #clock-cells: must be <0>; - #phy-cells: must be <0>. +Optional properties: +- drive-strength-microamp: adjust driving current, should be 1 ~ 0xF
TBC, 1-0xf is in units of microamps? So a max drive strength of 15uA? Seems a bit low.
quoted hunk ↗ jump to hunk
+ Example: mipi_tx0: mipi-dphy@10215000 {@@ -42,6 +45,7 @@ mipi_tx0: mipi-dphy@10215000 { clock-output-names = "mipi_tx0_pll"; #clock-cells = <0>; #phy-cells = <0>; + drive-strength-microamp = <0x8>; }; dsi0: dsi@1401b000 {-- 2.21.0
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