bool quirk_limited_clk_division;
bool quirk_unreliable_pulse_detection;
bool quirk_fixup_tuning;
+ bool quirk_ignore_data_inhibit;
unsigned int peripheral_clock;
const struct esdhc_clk_fixup *clk_fixup;
u32 div_ratio;
return ret;
}
+ /*
+ * Some controllers have unreliable Data Line Active
+ * bit for commands with busy signal. This affects
+ * Command Inhibit (data) bit. Just ignore it since
+ * MMC core driver has already polled card status
+ * with CMD13 after any command with busy siganl.
+ */
+ if ((spec_reg == SDHCI_PRESENT_STATE) &&
+ (esdhc->quirk_ignore_data_inhibit == true)) {
+ ret = value & ~SDHCI_DATA_INHIBIT;
+ return ret;
+ }
+
ret = value;
return ret;
}
if (of_device_is_compatible(np, "fsl,ls1021a-esdhc"))
host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
+ esdhc->quirk_ignore_data_inhibit = false;
if (of_device_is_compatible(np, "fsl,p2020-esdhc")) {
/*
* Freescale messed up with P2020 as it has a non-standard
* host control register
*/
host->quirks2 |= SDHCI_QUIRK2_BROKEN_HOST_CONTROL;
+ esdhc->quirk_ignore_data_inhibit = true;
}
/* call to generic mmc_of_parse to support additional capabilities */