diff options
| author | Jerry Huang <Chang-Ming.Huang@freescale.com> | 2011-01-06 23:42:19 -0600 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-01-14 01:32:22 -0600 |
| commit | d621da0066dff92a76ca3c6fb031a7f823a811f3 (patch) | |
| tree | 4ec744b969d1a05484e041f60ba7e3eaf66d1f6a /drivers | |
| parent | 28a096e7f25d43824618d210b5b20b1961b94d79 (diff) | |
fsl_esdhc: Add the workaround for erratum ESDHC111 (enable on P4080)
Do not issue a manual asynchronous CMD12. Instead, use a (software)
synchronous CMD12 or AUTOCMD12 to abort data transfer.
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/fsl_esdhc.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index cef2859ec6..fe94164b0d 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -1,5 +1,5 @@ /* - * Copyright 2007,2010 Freescale Semiconductor, Inc + * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc * Andy Fleming * * Based vaguely on the pxa mmc code: @@ -79,6 +79,9 @@ uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data) if (data->blocks > 1) { xfertyp |= XFERTYP_MSBSEL; xfertyp |= XFERTYP_BCEN; +#ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111 + xfertyp |= XFERTYP_AC12EN; +#endif } if (data->flags & MMC_DATA_READ) @@ -234,6 +237,11 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; volatile struct fsl_esdhc *regs = (struct fsl_esdhc *)cfg->esdhc_base; +#ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111 + if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION) + return 0; +#endif + esdhc_write32(®s->irqstat, -1); sync(); |