[PATCH 1/6] dt-bindings: rockchip-dw-mshc: add description of rockchip, power-invert
From: Shawn Lin <hidden>
Date: 2016-08-06 05:36:19
Also in:
linux-mmc, linux-rockchip
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Ulf Hansson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
rockchip,power-invert is used for rockchip to introduce the flag DW_MMC_CARD_PWR_INVERT from DT which should make the power control of dw_mmc more flexible according to different hw design. Signed-off-by: Shawn Lin <redacted> --- Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt
index 07184e8..5640659 100644
--- a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt
+++ b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt@@ -30,6 +30,12 @@ Optional Properties: probing, low speeds or in case where all phases work at tuning time. If not specified 0 deg will be used. +* rockchip,power-invert: Invert the power control of PWREN register. If adding + it, the card should be in power-on state when the power io outputs high level + voltage, and it should be in power-off state when outputing low level voltage. + otherwise the behaviour of power control should be the opposite way which is + the default policy of dw mshc. + Example: rkdwmmc0@12200000 {
--
2.3.7