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stm32: Deprecate SPI protocol version 2.

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Now that v3 support is in the cros_ec kernel driver and depthcharge,
deprecate support for the old v2 protocol.  At some point in the future,
support for the v2 protocol will dropped entirely.

Boards that require support for the V2 protocol should enable the
following config option.

    #define CONFIG_SPI_PROTOCOL_V2

BUG=chrome-os-partner:20533
BRANCH=None
TEST=make -j buildall tests
TEST=Flash jerry, AP & EC boot successful.
TEST=`ectool protoinfo` shows only version 3 supported on jerry.
TEST=Flashrom still works on jerry.

Change-Id: I72d3aee00879314b936cc0b1002c9883550b1f1a
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/291411
Trybot-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Aseda Aboagye <aaboagye@chromium.org>
This commit is contained in:
Aseda Aboagye
2015-08-06 16:48:28 -07:00
committed by ChromeOS Commit Bot
parent 3a659c1fed
commit c124e8cbc7
4 changed files with 22 additions and 3 deletions
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3
include/config.h
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@@ -1349,6 +1349,9 @@
/* Support SPI interfaces */
#undef CONFIG_SPI
/* Support deprecated SPI protocol version 2. */
#undef CONFIG_SPI_PROTOCOL_V2
/*
* Support SPI Slave interfaces. The first board supporting this is cr50 and
* in its parlance SPI_SLAVE is called SPS. This convention might be