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spi/imx: add support for imx51's eCSPI and CSPI

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i.MX51 comes with two eCSPI interfaces (that are quite different from
what was known before---the tried and tested Freescale way) and a CSPI
interface that is identical to the devices found on i.MX25 and i.MX35.

This patch is a merge of two very similar patches (by Jason Wang and Sascha
Hauer resp.) plus a (now hopefully correct) reimplementation of the
clock calculation.

Acked-by: Jason Wang <jason77.wang@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Uwe Kleine-König
2010-09-09 21:02:48 +02:00
committed by Sascha Hauer
parent 3b2aa89eb3
commit 0b599603d8
2 changed files with 143 additions and 2 deletions
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drivers/spi/Kconfig
+4 -1
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@@ -153,7 +153,10 @@ config SPI_IMX_VER_0_4
def_bool y if ARCH_MX31
config SPI_IMX_VER_0_7
def_bool y if ARCH_MX25 || ARCH_MX35
def_bool y if ARCH_MX25 || ARCH_MX35 || ARCH_MX51
config SPI_IMX_VER_2_3
def_bool y if ARCH_MX51
config SPI_IMX
tristate "Freescale i.MX SPI controllers"