Add hs400 dly3 setting for mtk-sd yaml
Signed-off-by: Wenbin Mei <wenbin.mei@xxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
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:
--
2.25.1
