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| author | Aisheng Dong <b29396@freescale.com> | 2014-08-27 15:26:28 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@freescale.com> | 2015-11-01 01:36:40 +0800 |
| commit | 0ceb397d47f9819d2ed20db1bee201c7623cd48c (patch) | |
| tree | f6e1cc4ec0057720dc410752ff0f4af247fe32d9 | |
| parent | 8477bf6f3544c44df4df48170ec45dff8518ad51 (diff) | |
| download | freescale-0ceb397d47f9819d2ed20db1bee201c7623cd48c.tar.gz | |
mmc: sdhci-esdhc-imx: fix incorrect max timeout cout for uSDHC
The default sdhci code use the 1 << 27 as the max timeout counter to
to calculate the max_busy_timeout, however it's not correct for uSDHC
since its the max counter is 1 << 28.
Implement esdhc_get_max_timeout_cout to handle it correctly.
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
(cherry picked from commit 10fd0ad967c05cda16b25f862e2a45eb63d83a21)
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 6bb2697da74..9138837ebe5 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -990,6 +990,14 @@ static int esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs) return esdhc_change_pinstate(host, uhs); } +static unsigned int esdhc_get_max_timeout_count(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct pltfm_imx_data *imx_data = pltfm_host->priv; + + return esdhc_is_usdhc(imx_data) ? 1 << 28 : 1 << 27; +} + static struct sdhci_ops sdhci_esdhc_ops = { .read_l = esdhc_readl_le, .read_w = esdhc_readw_le, @@ -999,6 +1007,7 @@ static struct sdhci_ops sdhci_esdhc_ops = { .set_clock = esdhc_pltfm_set_clock, .get_max_clock = esdhc_pltfm_get_max_clock, .get_min_clock = esdhc_pltfm_get_min_clock, + .get_max_timeout_count = esdhc_get_max_timeout_count, .get_ro = esdhc_pltfm_get_ro, .platform_bus_width = esdhc_pltfm_bus_width, .set_uhs_signaling = esdhc_set_uhs_signaling, |