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mmc: omap_hsmmc: Add support for quirky omap3 hsmmc controller

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When device is booted using devicetree, platforms impacted by Erratum
2.1.1.128 is not detected easily in the mmc driver. This erratum
indicates that the module cannot do multi-block transfers. Platforms
such as LDP which use OMAP3 ES revision prior to ES3.0 are impacted by
this.

Provide a new compatible property "ti,omap3-pre-es3-hsmmc" to allow
driver to determine if driver needs to implement quirks associated
with the specific module version (primarily because the IP revision
information is not sufficient for the same).

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
Nishanth Menon
2014-02-13 23:45:48 -06:00
committed by Chris Ball
parent b38313d627
commit 59445b10d0
2 changed files with 23 additions and 4 deletions
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Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
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@@ -10,6 +10,7 @@ Required properties:
- compatible:
Should be "ti,omap2-hsmmc", for OMAP2 controllers
Should be "ti,omap3-hsmmc", for OMAP3 controllers
Should be "ti,omap3-pre-es3-hsmmc" for OMAP3 controllers pre ES3.0
Should be "ti,omap4-hsmmc", for OMAP4 controllers
- ti,hwmods: Must be "mmc<n>", n is controller instance starting 1