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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>
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@ -880,6 +880,14 @@ static void esdhc_reset(struct sdhci_host *host, u8 mask)
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sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
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}
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static unsigned int esdhc_get_max_timeout_count(struct sdhci_host *host)
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{
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct pltfm_imx_data *imx_data = pltfm_host->priv;
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return esdhc_is_usdhc(imx_data) ? 1 << 28 : 1 << 27;
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}
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static struct sdhci_ops sdhci_esdhc_ops = {
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.read_l = esdhc_readl_le,
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.read_w = esdhc_readw_le,
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@ -889,6 +897,7 @@ static struct sdhci_ops sdhci_esdhc_ops = {
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.set_clock = esdhc_pltfm_set_clock,
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.get_max_clock = esdhc_pltfm_get_max_clock,
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.get_min_clock = esdhc_pltfm_get_min_clock,
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.get_max_timeout_count = esdhc_get_max_timeout_count,
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.get_ro = esdhc_pltfm_get_ro,
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.set_bus_width = esdhc_pltfm_set_bus_width,
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.set_uhs_signaling = esdhc_set_uhs_signaling,
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