The default sdhci code use the 1 << 27 as the max timeout counter to
to calculate the max_discard_to, however it's not correct for uSDHC
since its the max counter is 1 << 28.
Implement esdhc_get_max_timeout to handle it correctly.
Signed-off-by: Dong Aisheng <b29396@xxxxxxxxxxxxx>
Reported-by: Ed Sutter <ed.sutter@xxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-esdhc-imx.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 461a4c3..97b35e1 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -859,6 +859,15 @@ static int esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
return esdhc_change_pinstate(host, uhs);
}
+unsigned int esdhc_get_max_timeout(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct pltfm_imx_data *imx_data = pltfm_host->priv;
+ u32 max_to = esdhc_is_usdhc(imx_data) ? 1 << 28 : 1 << 27;
+
+ return max_to / (esdhc_pltfm_get_max_clock(host) / 1000);
+}
+
static struct sdhci_ops sdhci_esdhc_ops = {
.read_l = esdhc_readl_le,
.read_w = esdhc_readw_le,
@@ -871,6 +880,7 @@ static struct sdhci_ops sdhci_esdhc_ops = {
.get_ro = esdhc_pltfm_get_ro,
.platform_bus_width = esdhc_pltfm_bus_width,
.set_uhs_signaling = esdhc_set_uhs_signaling,
+ .get_max_timeout = esdhc_get_max_timeout,
};
static const struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
--
1.7.2.rc3
--
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