At the start of an smi_write, if the destination address is page aligned, the
Write Enable command is getting issued twice. This patch fixes it by keeping a
flag.
Signed-off-by: Vipin Kumar <vipin.ku...@st.com>
---
drivers/mtd/st_smi.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/mtd/st_smi.c b/drivers/mtd/st_smi.c
index a46b273..a84802a 100644
--- a/drivers/mtd/st_smi.c
+++ b/drivers/mtd/st_smi.c
@@ -374,7 +374,7 @@ static int smi_write(unsigned int *src_addr, unsigned int
*dst_addr,
u8 *src_addr8 = (u8 *)src_addr;
u8 *dst_addr8 = (u8 *)dst_addr;
int banknum;
- int i;
+ int i, issue_we;
switch (bank_addr) {
case SMIBANK0_BASE:
@@ -394,19 +394,16 @@ static int smi_write(unsigned int *src_addr, unsigned int
*dst_addr,
}
writel(readl(&smicntl->smi_sr) & ~(ERF1 | ERF2), &smicntl->smi_sr);
-
- if (smi_wait_till_ready(banknum, CONFIG_SYS_FLASH_WRITE_TOUT))
- return -EBUSY;
+ issue_we = 1;
/* Set SMI in Hardware Mode */
writel(readl(&smicntl->smi_cr1) & ~SW_MODE, &smicntl->smi_cr1);
- if (smi_write_enable(banknum))
- return -EIO;
-
/* Perform the write command */
for (i = 0; i < length; i += 4) {
- if (((ulong) (dst_addr) % SFLASH_PAGE_SIZE) == 0) {
+ if (issue_we || (((ulong)(dst_addr) % SFLASH_PAGE_SIZE) == 0)) {
+ issue_we = 0;
+
if (smi_wait_till_ready(banknum,
CONFIG_SYS_FLASH_WRITE_TOUT))
return -EBUSY;
--
1.8.0
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