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author | Angelo Dureghello <angelo.dureghello@timesys.com> | 2020-05-18 21:17:41 +0200 |
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committer | Ulf Hansson <ulf.hansson@linaro.org> | 2020-05-28 11:22:15 +0200 |
commit | a5a944d24cbce13f86932f6d9ae4ac4586fe543a (patch) | |
tree | 22a962e756fb1cfe151f6357b2d55464be39e03f /drivers/mmc/host/Kconfig | |
parent | e93577ecde8f3cbd12a2eaa0522d5c85e0dbdd53 (diff) | |
download | linux-a5a944d24cbce13f86932f6d9ae4ac4586fe543a.tar.gz linux-a5a944d24cbce13f86932f6d9ae4ac4586fe543a.tar.bz2 linux-a5a944d24cbce13f86932f6d9ae4ac4586fe543a.zip |
mmc: host: add Coldfire esdhc support
This driver has been developed as a separate module starting
from the similar sdhci-esdhc-imx.c.
Reasons for a separate sdchi-esdhc-mcf driver:
- m68K architecture does not support devicetrees, so modifying
sdhci-of-esdhc.c that is devicetree-related adding platform data
seems not appropriate,
- clock-related part, has to be implemented specifically for
mcf5441x family (see esdhc_mcf_pltfm_set_clock()),
- this is a big endian cpu accessing a big endian controller,
but about sdma, this controller does not support hw swap, which
needs to be handled with specific code,
- some other minor differences but mainly to avoid risks on
tweaking inside largely used imx driver. Adding just a small
size ColdFire-specific driver, with benefits in a further less
risky maintenance.
Signed-off-by: Angelo Dureghello <angelo.dureghello@timesys.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20200518191742.1251440-3-angelo.dureghello@timesys.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/Kconfig')
-rw-r--r-- | drivers/mmc/host/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index ee12451ba708..0ce332ad986b 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -235,6 +235,19 @@ config MMC_SDHCI_CNS3XXX If unsure, say N. +config MMC_SDHCI_ESDHC_MCF + tristate "SDHCI support for the Freescale eSDHC ColdFire controller" + depends on M5441x + depends on MMC_SDHCI_PLTFM + select MMC_SDHCI_IO_ACCESSORS + help + This selects the Freescale eSDHC controller support for + ColdFire mcf5441x devices. + + If you have a controller with this interface, say Y or M here. + + If unsure, say N. + config MMC_SDHCI_ESDHC_IMX tristate "SDHCI support for the Freescale eSDHC/uSDHC i.MX controller" depends on ARCH_MXC |