diff options
| author | Vipin Bhandari <vipin.bhandari@ti.com> | 2009-07-30 04:19:17 -0400 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2009-09-17 09:46:54 +0200 |
| commit | 89a99e76f6888166edb145f576cc4a761ee0e0a9 (patch) | |
| tree | 8e18d832e704146cdbb3c3edb80f94511dd8d885 | |
| parent | 8d360d8c03e1e8514bbaf606b1cd3b818dfc445d (diff) | |
| download | lwn-89a99e76f6888166edb145f576cc4a761ee0e0a9.tar.gz lwn-89a99e76f6888166edb145f576cc4a761ee0e0a9.zip | |
mfd: Correct ro and cd implemantion on DM355
This patch corrects the support for MMCSD card detection
and read only feature for SoC DM355.
EVMDM355_ECP_VA4.pdf, from Spectrum digital, suggests that
Bit 2 and 4 should be checked for card detection. However
on the EVM, bits 1 and 3 gives this status, for MMC/SD
instance 0 and 1 respectively. The pdf also suggests that
Bit 1 and 3 should be checked for write protection. However
on the EVM bits 2 and 4 gives this status.
This document can be downloaded from
http://c6000.spectrumdigital.com/evmdm355/reve/files/EVMDM355_ECP_VA4.pdf
Signed-off-by: Vipin Bhandari <vipin.bhandari@ti.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| -rw-r--r-- | drivers/mfd/dm355evm_msp.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c index 5b6e58a3ba46..3d4a861976ca 100644 --- a/drivers/mfd/dm355evm_msp.c +++ b/drivers/mfd/dm355evm_msp.c @@ -107,8 +107,16 @@ static const u8 msp_gpios[] = { MSP_GPIO(2, SWITCH1), MSP_GPIO(3, SWITCH1), MSP_GPIO(4, SWITCH1), /* switches on MMC/SD sockets */ - MSP_GPIO(1, SDMMC), MSP_GPIO(2, SDMMC), /* mmc0 WP, nCD */ - MSP_GPIO(3, SDMMC), MSP_GPIO(4, SDMMC), /* mmc1 WP, nCD */ + /* + * Note: EVMDM355_ECP_VA4.pdf suggests that Bit 2 and 4 should be + * checked for card detection. However on the EVM bit 1 and 3 gives + * this status, for 0 and 1 instance respectively. The pdf also + * suggests that Bit 1 and 3 should be checked for write protection. + * However on the EVM bit 2 and 4 gives this status,for 0 and 1 + * instance respectively. + */ + MSP_GPIO(2, SDMMC), MSP_GPIO(1, SDMMC), /* mmc0 WP, nCD */ + MSP_GPIO(4, SDMMC), MSP_GPIO(3, SDMMC), /* mmc1 WP, nCD */ }; #define MSP_GPIO_REG(offset) (msp_gpios[(offset)] >> 3) |