@@ -1646,6 +1646,28 @@ static int fsl_esdhc_set_enhanced_strobe(struct udevice *dev)
}
#endif
+static int fsl_esdhc_wait_dat0(struct udevice *dev, int state,
+ int timeout_us)
+{
+ int ret = -ETIMEDOUT;
+ bool dat0_high;
+ bool target_dat0_high = !!state;
+ struct fsl_esdhc_priv *priv = dev_get_priv(dev);
+ struct fsl_esdhc *regs = priv->esdhc_regs;
+
+ timeout_us = DIV_ROUND_UP(timeout_us, 10); /* check every 10 us. */
+ while (timeout_us--) {
+ dat0_high = !!(esdhc_read32(®s->prsstat) & PRSSTAT_DAT0);
+ if (dat0_high == target_dat0_high) {
+ ret = 0;
+ break;
+ }
+ udelay(10);
+ }
+
+ return ret;
+}
+
static const struct dm_mmc_ops fsl_esdhc_ops = {
.get_cd = fsl_esdhc_get_cd,
.send_cmd = fsl_esdhc_send_cmd,
@@ -1656,6 +1678,7 @@ static const struct dm_mmc_ops fsl_esdhc_ops = {
#if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
.set_enhanced_strobe = fsl_esdhc_set_enhanced_strobe,
#endif
+ .wait_dat0 = fsl_esdhc_wait_dat0,
};
#endif