| Message ID | 20201202082507.3536-3-chris.ruehl@gtsys.com.hk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | phy: rockchip: set otapdlysec for in dts | expand |
On Wed, Dec 02, 2020 at 04:25:07PM +0800, Chris Ruehl wrote: > 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. Needs a vendor prefix. > > Example: > > -- > 2.20.1 >
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:
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(+)