From: Shawn Lin Date: Thu, 14 Jul 2016 08:26:03 +0000 (+0800) Subject: Documentation: mmc: add description for new no-sd* and no-mmc X-Git-Tag: v5.15~13143^2~44 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5f1d1434b7a03dcf19f4a11f8632fbcd8185dfa8;p=platform%2Fkernel%2Flinux-starfive.git 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 --- diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index ecc007a..22d1e1f 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"