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Subject[PATCH 2/2] devicetree: phy: rockchip-emmc add output-tapdelay-select
Date
Update the rockchip-emmc-phy.txt and add the u32 property
'output-tapdelay-select'. This allow to set the otapdlysec register.

Tested with our customized rk3399 board to tune eMMC.

Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
---
Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt | 3 +++
1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
index 3e4d2d79a65d..00aa2d349e55 100644
--- a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
+++ b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
@@ -18,6 +18,9 @@ Optional properties:
If not set, the default value of 50 will be applied.
- enable-strobe-pulldown: Enable internal pull-down for the strobe line.
If not set, pull-down is not used.
+ - output-tapdelay-select: Specifies the phyctrl_otapdlysec register.
+ If not set, the register defaults to 0x4.
+ Maximum value 0xf.

Example:

--
2.20.1
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