Hi Ricardo,
On Sun, Nov 18, 2018 at 5:44 PM Ricardo Salveti rsalveti@rsalveti.net wrote:
Also tried with ARM's pre-built toolchain (same version), and got the same hang. Looking a bit further, it basically looks up while waiting the first mmc command to complete:
has_emmc -> mmc_get_op_cond -> mmc_send_if_cond (testing for SD version 2) -> mmc_send_cmd -> esdhc_send_cmd_common -> while (!(esdhc_read32(®s->irqstat) & flags))
Does the change below help?
--- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -396,6 +396,7 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint irqstat; u32 flags = IRQSTAT_CC | IRQSTAT_CTOE; struct fsl_esdhc *regs = priv->esdhc_regs; + unsigned long start;
#ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION) @@ -453,8 +454,11 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc, flags = IRQSTAT_BRR;
/* Wait for the command to complete */ - while (!(esdhc_read32(®s->irqstat) & flags)) - ; + start = get_timer(0); + while (!(esdhc_read32(®s->irqstat) & flags)) { + if (get_timer(start) > 1000) + return -ETIMEDOUT; + }
irqstat = esdhc_read32(®s->irqstat);