From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Lin Subject: [PATCH v2 1/2] Documentation: mmc: add description for new no-sd* and no-mmc Date: Thu, 14 Jul 2016 16:26:03 +0800 Message-ID: <1468484764-32353-1-git-send-email-shawn.lin@rock-chips.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Ulf Hansson Cc: Adrian Hunter , Jaehoon Chung , Rob Herring , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Shawn Lin List-Id: devicetree@vger.kernel.org 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 --- Changes in v2: - amend the description of these properties and the commit msg 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 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" -- 2.3.7