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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2013-02-15 16:13:55 +0100
committerChris Ball <cjb@laptop.org>2013-02-24 14:37:21 -0500
commitd804820fa3302cb3d11f68a840e718d082967ad4 (patch)
treedb3238fa7356979cc035db102d4f8a6653bce0dc /Documentation
parentmmc: sh_mmcif: use mmc_of_parse() to parse standard MMC DT bindings (diff)
downloadlinux-dev-d804820fa3302cb3d11f68a840e718d082967ad4.tar.xz
linux-dev-d804820fa3302cb3d11f68a840e718d082967ad4.zip
mmc: tmio-mmc: define device-tree bindings
Define device-tree bindings for the tmio-mmc driver to be able to specify parameters, currently provided in platform data. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/mmc/tmio_mmc.txt20
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt
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+* Toshiba Mobile IO SD/MMC controller
+
+The tmio-mmc driver doesn't probe its devices actively, instead its binding to
+devices is managed by either MFD drivers or by the sh_mobile_sdhi platform
+driver. Those drivers supply the tmio-mmc driver with platform data, that either
+describe hardware capabilities, known to them, or are obtained by them from
+their own platform data or from their DT information. In the latter case all
+compulsory and any optional properties, common to all SD/MMC drivers, as
+described in mmc.txt, can be used. Additionally the following tmio_mmc-specific
+optional bindings can be used.
+
+Optional properties:
+- toshiba,mmc-wrprotect-disable: write-protect detection is unavailable
+
+When used with Renesas SDHI hardware, the following compatibility strings
+configure various model-specific properties:
+
+"renesas,sh7372-sdhi": (default) compatible with SH7372
+"renesas,r8a7740-sdhi": compatible with R8A7740: certain MMC/SD commands have to
+ wait for the interface to become idle.