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fix(nand): reset the SLC NAND

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The reset command should be the first command sent to the SLC NAND.
Resetting the SLC NAND should not be done only if NAND_ONFI_DETECT
is enabled.

Change-Id: If225a1b1a7e04181cc5839e282c435c5c8958bd7
Signed-off-by: Christophe Kerello <christophe.kerello@foss.st.com>
This commit is contained in:
Christophe Kerello 2021-05-17 15:20:31 +02:00 • committed by Yann Gautier
parent 53092a7780
commit f4d765a128
1 changed files with 19 additions and 17 deletions

36
drivers/mtd/nand/raw_nand.c
View file

@ -218,6 +218,18 @@ int nand_wait_ready(unsigned int delay_ms)
return -ETIMEDOUT;
}
static int nand_reset(void)
{
int ret;
ret = nand_send_cmd(NAND_CMD_RESET, NAND_TWB_MAX);
if (ret != 0) {
return ret;
}
return nand_send_wait(PSEC_TO_MSEC(NAND_TRST_MAX), 0U);
}
#if NAND_ONFI_DETECT
static uint16_t nand_check_crc(uint16_t crc, uint8_t *data_in,
unsigned int data_len)
@ -265,18 +277,6 @@ static int nand_read_id(uint8_t addr, uint8_t *id, unsigned int size)
return nand_read_data(id, size, true);
}
static int nand_reset(void)
{
int ret;
ret = nand_send_cmd(NAND_CMD_RESET, NAND_TWB_MAX);
if (ret != 0) {
return ret;
}
return nand_send_wait(PSEC_TO_MSEC(NAND_TRST_MAX), 0U);
}
static int nand_read_param_page(void)
{
struct nand_param_page page;
@ -346,11 +346,6 @@ static int detect_onfi(void)
int ret;
char id[4];
ret = nand_reset();
if (ret != 0) {
return ret;
}
ret = nand_read_id(ONFI_SIGNATURE_ADDR, (uint8_t *)id, sizeof(id));
if (ret != 0) {
return ret;
@ -406,6 +401,8 @@ void nand_raw_ctrl_init(const struct nand_ctrl_ops *ops)
int nand_raw_init(unsigned long long *size, unsigned int *erase_size)
{
int ret;
rawnand_dev.nand_dev = get_nand_device();
if (rawnand_dev.nand_dev == NULL) {
return -EINVAL;
@ -420,6 +417,11 @@ int nand_raw_init(unsigned long long *size, unsigned int *erase_size)
return -ENODEV;
}
ret = nand_reset();
if (ret != 0) {
return ret;
}
#if NAND_ONFI_DETECT
if (detect_onfi() != 0) {
WARN("Detect ONFI failed\n");