[PATCH V2 5/5] mmc: fsl_esdhc_imx: Reset tuning logic

[Peng Fan (OSS)]

From: Peng Fan <peng.fan at 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 at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---

V2:
 None

 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 debfc78b7f0..fb410104c1f 100644
--- a/drivers/mmc/fsl_esdhc_imx.c
+++ b/drivers/mmc/fsl_esdhc_imx.c
@@ -987,11 +987,11 @@ static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
 	ulong start;
 
 	/* Reset the entire host controller */
-	esdhc_setbits32(&regs->sysctl, SYSCTL_RSTA);
+	esdhc_setbits32(&regs->sysctl, SYSCTL_RSTA | SYSCTL_RSTT);
 
 	/* Wait until the controller is available */
 	start = get_timer(0);
-	while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTA)) {
+	while ((esdhc_read32(&regs->sysctl) & (SYSCTL_RSTA | SYSCTL_RSTT))) {
 		if (get_timer(start) > 1000)
 			return -ETIMEDOUT;
 	}
@@ -1095,11 +1095,11 @@ static int esdhc_reset(struct fsl_esdhc *regs)
 	ulong start;
 
 	/* reset the controller */
-	esdhc_setbits32(&regs->sysctl, SYSCTL_RSTA);
+	esdhc_setbits32(&regs->sysctl, SYSCTL_RSTA | SYSCTL_RSTT);
 
 	/* hardware clears the bit when it is done */
 	start = get_timer(0);
-	while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTA)) {
+	while ((esdhc_read32(&regs->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
-- 
2.35.3