From: Peng Fan peng.fan@nxp.com
When supporting partition reset for SoC such as i.MX95 , the Linux Kernel may have configured the tuning, while after force reset by wdog or else, uboot CMD0 will never pass unless config RSTT to reset tuning logic.
Since RSTA and RSTT are independent, so need both to be reseted in the controller.
Acked-by: Haibo Chen haibo.chen@nxp.com Signed-off-by: Peng Fan peng.fan@nxp.com --- drivers/mmc/fsl_esdhc_imx.c | 8 ++++---- include/fsl_esdhc_imx.h | 1 + 2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/fsl_esdhc_imx.c b/drivers/mmc/fsl_esdhc_imx.c index 2413bafc32f..d23de876c6a 100644 --- a/drivers/mmc/fsl_esdhc_imx.c +++ b/drivers/mmc/fsl_esdhc_imx.c @@ -988,11 +988,11 @@ static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc) ulong start;
/* Reset the entire host controller */ - esdhc_setbits32(®s->sysctl, SYSCTL_RSTA); + esdhc_setbits32(®s->sysctl, SYSCTL_RSTA | SYSCTL_RSTT);
/* Wait until the controller is available */ start = get_timer(0); - while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) { + while ((esdhc_read32(®s->sysctl) & (SYSCTL_RSTA | SYSCTL_RSTT))) { if (get_timer(start) > 1000) return -ETIMEDOUT; } @@ -1096,11 +1096,11 @@ static int esdhc_reset(struct fsl_esdhc *regs) ulong start;
/* reset the controller */ - esdhc_setbits32(®s->sysctl, SYSCTL_RSTA); + esdhc_setbits32(®s->sysctl, SYSCTL_RSTA | SYSCTL_RSTT);
/* hardware clears the bit when it is done */ start = get_timer(0); - while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) { + while ((esdhc_read32(®s->sysctl) & (SYSCTL_RSTA | SYSCTL_RSTT))) { if (get_timer(start) > 100) { printf("MMC/SD: Reset never completed.\n"); return -ETIMEDOUT; diff --git a/include/fsl_esdhc_imx.h b/include/fsl_esdhc_imx.h index b8efd2a1664..8612b56609e 100644 --- a/include/fsl_esdhc_imx.h +++ b/include/fsl_esdhc_imx.h @@ -31,6 +31,7 @@ #define SYSCTL_RSTA 0x01000000 #define SYSCTL_RSTC 0x02000000 #define SYSCTL_RSTD 0x04000000 +#define SYSCTL_RSTT 0x10000000
#define VENDORSPEC_CKEN 0x00004000 #define VENDORSPEC_PEREN 0x00002000