Re: [PATCH v2 2/4] dt-bindings: phy: Add a new property drive-impedance-ohm for RK's emmc PHY
From: Christoph MÃllner
Date: Tue Mar 12 2019 - 09:02:05 EST
> On 12.03.2019, at 13:52, Heiko Stuebner <heiko@xxxxxxxxx> wrote:
> Hi Christoph,
> Am Donnerstag, 7. MÃrz 2019, 09:41:54 CET schrieb Christoph Muellner:
>> This patch documents the new proprty drive-impedance-ohm for
>> Rockchip's eMMC PHY node.
>> Signed-off-by: Christoph Muellner <christoph.muellner@xxxxxxxxxxxxxxxxxxxxx>
>> Signed-off-by: Philipp Tomsich <philipp.tomsich@xxxxxxxxxxxxxxxxxxxxx>
>> 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 e3ea55763b0a..5f5d999dacc3 100644
>> --- a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
>> +++ b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
>> @@ -13,6 +13,9 @@ specified by name:
> you might want to adapt the section headline as well, as right now it
> talks about "Optional clocks", but should likely become the generic
> "Optional properties" as in other bindings (including moving the clock-
> binding.txt reference down into the clock elements)
Thank's for spotting this.
Will do for v3.
>> (because most boards can get basic functionality without having
>> access to it), it is strongly suggested.
>> - clocks: Should have a phandle to the card clock exported by the SDHCI driver.
>> + - drive-impedance-ohm: Specifies the drive impedance in Ohm.
>> + Possible values are 33, 40, 50, 66 and 100.
>> + If not set, the default value of 50 will be applied.