From: Rhyland Klein <rklein@nvidia.com>
Date: Mon, 9 Dec 2013 11:36:09 +0000 (+0100)
Subject: mfd: cros ec: spi: Add delay for raising CS
X-Git-Tag: v3.14-rc1~142^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01e73c89cf03c020e586dc9e30d52a6e098853f6;p=pandora-kernel.git

mfd: cros ec: spi: Add delay for raising CS

The EC has specific timing it requires. Add support for an optional delay
after raising CS to fix timing issues. This is configurable based on
a DT property "google,cros-ec-spi-msg-delay".

If this property isn't set, then no delay will be added. However, if set
it will cause a delay equal to the value passed to it to be inserted at
the end of a transaction.

Signed-off-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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