From 5f1d1434b7a03dcf19f4a11f8632fbcd8185dfa8 Mon Sep 17 00:00:00 2001 From: Shawn Lin Date: Thu, 14 Jul 2016 16:26:03 +0800 Subject: [PATCH] Documentation: mmc: add description for new no-sd* and no-mmc This patch adds description for no-sd, no-sdio, no-mmc. We expose these to DT as some of the controllers are unable to deal with special cmd type due to hw limitation. Signed-off-by: Shawn Lin Acked-by: Rob Herring Signed-off-by: Ulf Hansson --- Documentation/devicetree/bindings/mmc/mmc.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index ecc007a927cc..22d1e1f3f38b 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -49,6 +49,9 @@ Optional properties: - mmc-hs400-enhanced-strobe: eMMC HS400 enhanced strobe mode is supported - dsr: Value the card's (optional) Driver Stage Register (DSR) should be programmed with. Valid range: [0 .. 0xffff]. +- no-sdio: controller is limited to send sdio cmd during initialization +- no-sd: controller is limited to send sd cmd during initialization +- no-mmc: controller is limited to send mmc cmd during initialization *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line polarity properties, we have to fix the meaning of the "normal" and "inverted" -- 2.20.1