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author | Christoph Muellner <christoph.muellner@theobroma-systems.com> | 2019-03-01 17:15:31 +0100 |
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committer | Christoph Müllner <christophm30@gmail.com> | 2019-04-07 15:23:03 +0200 |
commit | 647949982b5f6af5d995faa74796acd1b5f007e2 (patch) | |
tree | a7ae1338230d79ff0f3f926edc4a88124bd7b178 | |
parent | 8df5f0e7f1bcb0cd55b5449bb8c834e6360ebd29 (diff) |
dt-bindings: phy: Add a new property drive-impedance-ohm for RK's emmc PHY
This patch documents the new proprty drive-impedance-ohm for
Rockchip's eMMC PHY node.
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
-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 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: (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. Example: |