[RESEND v4 1/3] dt-bindings: mmc: mtk-sd: add hs400 dly3 setting
From: Wenbin Mei <hidden>
Date: 2021-09-17 12:48:18
Also in:
linux-arm-kernel, linux-mediatek, linux-mmc, lkml
Subsystem:
mediatek mmc/sd/sdio driver, multimedia card (mmc), secure digital (sd) and sdio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Chaotian Jing, Ulf Hansson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add hs400 dly3 setting for mtk-sd yaml Signed-off-by: Wenbin Mei <redacted> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Linus Walleij <redacted> --- Documentation/devicetree/bindings/mmc/mtk-sd.yaml | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
index e866e985549e..82768a807294 100644
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml@@ -119,6 +119,18 @@ properties: If present, HS400 command responses are sampled on rising edges. If not present, HS400 command responses are sampled on falling edges. + mediatek,hs400-ds-dly3: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Gear of the third delay line for DS for input data latch in data + pad macro, there are 32 stages from 0 to 31. + For different corner IC, the time is different about one step, it is + about 100ps. + The value is confirmed by doing scan and calibration to find a best + value with corner IC and it is valid only for HS400 mode. + minimum: 0 + maximum: 31 + mediatek,latch-ck: $ref: /schemas/types.yaml#/definitions/uint32 description:
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2.25.1