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| author | Chris Ruehl <chris.ruehl@gtsys.com.hk> | 2020-12-02 16:25:07 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-12-05 13:40:48 +0530 |
| commit | 86e21677e775bcf10d676e0e93710ce17d52fdb7 (patch) | |
| tree | 51477a744b18cb2cfc82d866fbc7bbab272a5401 /Documentation | |
| parent | a8cef928276bbf8254d0067cda21dbe6210ea1aa (diff) | |
devicetree: phy: rockchip-emmc add output-tapdelay-select
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>
Link: https://lore.kernel.org/r/20201202082507.3536-3-chris.ruehl@gtsys.com.hk
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt | 3 |
1 files changed, 3 insertions, 0 deletions
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: |