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| author | Tushar Behera <tushar.behera@linaro.org> | 2012-09-20 20:31:57 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2012-10-22 02:53:36 -0500 |
| commit | 13243f2eafc4292917178051fe1bb5aab2774dca (patch) | |
| tree | ad66677b0f99f5daae35d5ef0e750e51931eb25d /drivers/mmc | |
| parent | 804c7f422169212e92530e1ddaf74bf1ca9ebfa1 (diff) | |
| download | u-boot-imx-13243f2eafc4292917178051fe1bb5aab2774dca.zip u-boot-imx-13243f2eafc4292917178051fe1bb5aab2774dca.tar.gz u-boot-imx-13243f2eafc4292917178051fe1bb5aab2774dca.tar.bz2 | |
mmc: sdhci: Add a quirk to add delay during completion of sdhci_send_cmd
MMC host controller requires a delay between every sdhci_send_cmd()
execution. In s5p_mmc driver (s5p_sdhci replaces this driver), a delay
of 1000us was provided after every mmc_send_cmd() call. Adding a quirk
in current sdhci driver to replicate the behaviour.
Without this delay, MMC initialization on Origen board fails with
following error messages.
Timeout for status update!
mmc fail to send stop cmd
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/s5p_sdhci.c | 3 | ||||
| -rw-r--r-- | drivers/mmc/sdhci.c | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/mmc/s5p_sdhci.c b/drivers/mmc/s5p_sdhci.c index b978236..dc49d37 100644 --- a/drivers/mmc/s5p_sdhci.c +++ b/drivers/mmc/s5p_sdhci.c @@ -83,7 +83,8 @@ int s5p_sdhci_init(u32 regbase, int index, int bus_width) host->ioaddr = (void *)regbase; host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_VOLTAGE | - SDHCI_QUIRK_BROKEN_R1B | SDHCI_QUIRK_32BIT_DMA_ADDR; + SDHCI_QUIRK_BROKEN_R1B | SDHCI_QUIRK_32BIT_DMA_ADDR | + SDHCI_QUIRK_WAIT_SEND_CMD; host->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; host->version = sdhci_readw(host, SDHCI_HOST_VERSION); diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 15b4686..7845f87 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -240,6 +240,9 @@ int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, if (!ret && data) ret = sdhci_transfer_data(host, data, start_addr); + if (host->quirks & SDHCI_QUIRK_WAIT_SEND_CMD) + udelay(1000); + stat = sdhci_readl(host, SDHCI_INT_STATUS); sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS); if (!ret) { |