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| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2013-01-25 16:17:42 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-01-25 19:52:43 +0100 |
| commit | 14b2c8f15b10661ddb57a894df08a13a5accb7ac (patch) | |
| tree | 86b87763c98a16f3826bb0d1bca56d405eddc786 /drivers/mci/atmel_mci.c | |
| parent | 40a333b0623ebb4f188f9fb2820ed873f3415e41 (diff) | |
| download | barebox-14b2c8f15b10661ddb57a894df08a13a5accb7ac.tar.gz barebox-14b2c8f15b10661ddb57a894df08a13a5accb7ac.tar.xz | |
atmel_mci: on version 0x0 we need to reset the IP at each request
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/mci/atmel_mci.c')
| -rw-r--r-- | drivers/mci/atmel_mci.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mci/atmel_mci.c b/drivers/mci/atmel_mci.c index bf0adb0ad0..1b603481f9 100644 --- a/drivers/mci/atmel_mci.c +++ b/drivers/mci/atmel_mci.c @@ -30,6 +30,7 @@ struct atmel_mci_caps { bool has_rwproof; bool has_odd_clk_div; + bool need_reset_after_xfer; }; struct atmel_mci { @@ -411,6 +412,12 @@ static int atmci_request(struct mci_host *mci, struct mci_cmd *cmd, struct mci_d u32 stat, cmdat = 0; int ret; + if (host->caps.need_reset_after_xfer) { + atmci_writel(host, ATMCI_CR, ATMCI_CR_SWRST); + atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIEN); + atmci_writel(host, ATMCI_MR, host->mode_reg); + } + if (cmd->resp_type != MMC_RSP_NONE) cmdat |= ATMCI_CMDR_MAXLAT_64CYC; @@ -471,6 +478,8 @@ static void atmci_get_cap(struct atmel_mci *host) dev_info(host->hw_dev, "version: 0x%x\n", version); + host->caps.need_reset_after_xfer = 1; + switch (version & 0xf00) { case 0x500: host->caps.has_odd_clk_div = 1; @@ -479,6 +488,7 @@ static void atmci_get_cap(struct atmel_mci *host) case 0x200: host->caps.has_rwproof = 1; case 0x100: + host->caps.need_reset_after_xfer = 0; case 0x0: break; default: |