From: Neil Armstrong <narmstrong@neotion.com>
To: linux-mmc@vger.kernel.org
Cc: Chris Ball <cjb@laptop.org>, Namjae Jeon <linkinjeon@gmail.com>,
Linus Walleij <linus.walleij@linaro.org>,
Seungwon Jeon <tgih.jun@samsung.com>,
Subhash Jadavani <subhashj@codeaurora.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH 3/3] Add Documentation for MMC boot_enable attribute
Date: Fri, 19 Apr 2013 14:46:25 +0200 [thread overview]
Message-ID: <51713CA1.7020204@neotion.com> (raw)
Add documentation on the enable_boot sysfs attribute.
Signed-off-by: Neil Armstrong <narmstrong@neotion.com>
---
Documentation/mmc/mmc-dev-parts.txt | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/Documentation/mmc/mmc-dev-parts.txt
b/Documentation/mmc/mmc-dev-parts.txt
index f08d078..78228de 100644
--- a/Documentation/mmc/mmc-dev-parts.txt
+++ b/Documentation/mmc/mmc-dev-parts.txt
@@ -38,3 +38,9 @@ feature has been disabled on the card, the file will
be read-only.
The boot partitions can also be locked permanently, but this feature is
not accessible through sysfs in order to avoid accidental or malicious
bricking.
+
+A special attribute named boot_enable is available to configure the
+selected partition for the eMMC 4.3+ boot operation mode.
+When selected between the two factory boot partitions and the main
+user partition, at boot time a special sequence enables makes the
+eMMC device to output the content of the selected partition.
--
1.7.0.4
next reply other threads:[~2013-04-19 12:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-19 12:46 Neil Armstrong [this message]
2013-04-21 3:59 ` [PATCH 3/3] Add Documentation for MMC boot_enable attribute Rob Landley
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