hi TI
At - 40 degrees Celsius,I use the boot mode is sbl start mode by ospi flash。At the phase of mcu app,load the lateapp1 lateapp2 kernel and dtb from emmc Successfully.AT the phase of booting the kenrel,thers is an error of emmc:
sdhci-am654: probe of 4f80000.sdhci failed with error -110.
At-20 degrees Celsius,the boot is ok.
I found the code in this function：
static int sdhci_am654_init(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_am654_data *sdhci_am654 = sdhci_pltfm_priv(pltfm_host);
u32 ctl_cfg_2 = 0;
u32 mask;
u32 val;
int ret;
/* Reset OTAP to default value */
mask = OTAPDLYENA_MASK | OTAPDLYSEL_MASK;
regmap_update_bits(sdhci_am654->base, PHY_CTRL4, mask, 0x0);
if (sdhci_am654->flags & DLL_CALIB) {
regmap_read(sdhci_am654->base, PHY_STAT1, &val);
if (~val & CALDONE_MASK) {
/* Calibrate IO lines */
regmap_update_bits(sdhci_am654->base, PHY_CTRL1,
PDB_MASK, PDB_MASK);
ret = regmap_read_poll_timeout(sdhci_am654->base,
PHY_STAT1, val,
val & CALDONE_MASK,
1, 20);
if (ret)
return ret;
} of
}
...
}
Please tell me what these codes mean. what is mean of MMCSD0_SS_PHY_STAT_1_REG Register at bit 1
