From: Shawn Lin <shawn.lin@rock-chips.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>,
Jaehoon Chung <jh80.chung@samsung.com>,
Rob Herring <robh+dt@kernel.org>,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
Doug Anderson <dianders@chromium.org>,
devicetree@vger.kernel.org, Shawn Lin <shawn.lin@rock-chips.com>
Subject: [PATCH 3/3] Documentation: mmc: add description for new no-sd* and no-mmc
Date: Fri, 1 Jul 2016 15:45:30 +0800 [thread overview]
Message-ID: <1467359130-11409-4-git-send-email-shawn.lin@rock-chips.com> (raw)
In-Reply-To: <1467359130-11409-1-git-send-email-shawn.lin@rock-chips.com>
This patch adds description for no-sd, no-sdio, no-mmc. We
expect the specific boards adds these in DT to improve
the initialization. For instance, for a soldered eMMC slot,
we could skip sending SDIO and SD commands to probe its card
types as it's always should be the type fo MMC card.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
---
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..b2046c6 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: skip sending sdio cmd during initialization
+- no-sd: skip sending sd cmd during initialization
+- no-mmc: skip sending 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
next prev parent reply other threads:[~2016-07-01 7:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-01 7:45 [PATCH 0/3] Expose new mmc caps to DT Shawn Lin
2016-07-01 7:45 ` [PATCH 1/3] mmc: core: Allow hosts to specify non-support for MMC commands Shawn Lin
2016-07-06 16:21 ` Ulf Hansson
2016-07-01 7:45 ` [PATCH 2/3] mmc: core: expose MMC_CAP2_NO_* to dt Shawn Lin
2016-07-01 7:45 ` Shawn Lin [this message]
2016-07-11 13:57 ` [PATCH 3/3] Documentation: mmc: add description for new no-sd* and no-mmc Rob Herring
2016-07-12 1:51 ` Shawn Lin
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