The SECT_4K_PMC flag will set a device specific opcode for the 4k sector
erase. Instead of handling it in the core, we can move it to a
late_init(). In that late init, loop over all erase types, look for the
4k size and replace the opcode.
Signed-off-by: Michael Walle <[email protected]>
---
Please have a closer look here. This is only compile time tested. Also
I didn't see much reason to reorder the flags.
drivers/mtd/spi-nor/core.c | 7 +------
drivers/mtd/spi-nor/core.h | 2 --
drivers/mtd/spi-nor/issi.c | 23 +++++++++++++++++++++--
3 files changed, 22 insertions(+), 10 deletions(-)
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 848836535cdd..fd41ab9a8746 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2364,12 +2364,7 @@ static void spi_nor_no_sfdp_init_params(struct spi_nor *nor)
*/
erase_mask = 0;
i = 0;
- if (no_sfdp_flags & SECT_4K_PMC) {
- erase_mask |= BIT(i);
- spi_nor_set_erase_type(&map->erase_type[i], 4096u,
- SPINOR_OP_BE_4K_PMC);
- i++;
- } else if (no_sfdp_flags & SECT_4K) {
+ if (no_sfdp_flags & SECT_4K) {
erase_mask |= BIT(i);
spi_nor_set_erase_type(&map->erase_type[i], 4096u,
SPINOR_OP_BE_4K);
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 14bf28473cf3..e355457a8555 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -352,7 +352,6 @@ struct spi_nor_fixups {
* flags are used together with the SPI_NOR_SKIP_SFDP flag.
* SPI_NOR_SKIP_SFDP: skip parsing of SFDP tables.
* SECT_4K: SPINOR_OP_BE_4K works uniformly.
- * SECT_4K_PMC: SPINOR_OP_BE_4K_PMC works uniformly.
* SPI_NOR_DUAL_READ: flash supports Dual Read.
* SPI_NOR_QUAD_READ: flash supports Quad Read.
* SPI_NOR_OCTAL_READ: flash supports Octal Read.
@@ -400,7 +399,6 @@ struct flash_info {
u8 no_sfdp_flags;
#define SPI_NOR_SKIP_SFDP BIT(0)
#define SECT_4K BIT(1)
-#define SECT_4K_PMC BIT(2)
#define SPI_NOR_DUAL_READ BIT(3)
#define SPI_NOR_QUAD_READ BIT(4)
#define SPI_NOR_OCTAL_READ BIT(5)
diff --git a/drivers/mtd/spi-nor/issi.c b/drivers/mtd/spi-nor/issi.c
index c012bc2486e1..3c7d51d2b050 100644
--- a/drivers/mtd/spi-nor/issi.c
+++ b/drivers/mtd/spi-nor/issi.c
@@ -29,6 +29,21 @@ static const struct spi_nor_fixups is25lp256_fixups = {
.post_bfpt = is25lp256_post_bfpt_fixups,
};
+static void pm25lv_nor_late_init(struct spi_nor *nor)
+{
+ struct spi_nor_erase_map *map = &nor->params->erase_map;
+ int i;
+
+ /* The PM25LV series has a different 4k sector erase opcode */
+ for (i = 0; i < SNOR_ERASE_TYPE_MAX; i++)
+ if (map->erase_type[i].size == 4096)
+ map->erase_type[i].opcode = SPINOR_OP_BE_4K_PMC;
+}
+
+static const struct spi_nor_fixups pm25lv_nor_fixups = {
+ .late_init = pm25lv_nor_late_init,
+};
+
static const struct flash_info issi_nor_parts[] = {
/* ISSI */
{ "is25cd512", INFO(0x7f9d20, 0, 32 * 1024, 2)
@@ -62,9 +77,13 @@ static const struct flash_info issi_nor_parts[] = {
/* PMC */
{ "pm25lv512", INFO(0, 0, 32 * 1024, 2)
- NO_SFDP_FLAGS(SECT_4K_PMC) },
+ NO_SFDP_FLAGS(SECT_4K)
+ .fixups = &pm25lv_nor_fixups
+ },
{ "pm25lv010", INFO(0, 0, 32 * 1024, 4)
- NO_SFDP_FLAGS(SECT_4K_PMC) },
+ NO_SFDP_FLAGS(SECT_4K)
+ .fixups = &pm25lv_nor_fixups
+ },
{ "pm25lq032", INFO(0x7f9d46, 0, 64 * 1024, 64)
NO_SFDP_FLAGS(SECT_4K) },
};
--
2.30.2
On 18/04/22 01:26PM, Michael Walle wrote:
> The SECT_4K_PMC flag will set a device specific opcode for the 4k sector
> erase. Instead of handling it in the core, we can move it to a
> late_init(). In that late init, loop over all erase types, look for the
> 4k size and replace the opcode.
>
> Signed-off-by: Michael Walle <[email protected]>
> ---
> Please have a closer look here. This is only compile time tested. Also
> I didn't see much reason to reorder the flags.
Patch looks okay to me but I would like someone to test it on the flash
before I apply it.
--
Regards,
Pratyush Yadav
Texas Instruments Inc.
On Mon, 18 Apr 2022 13:26:50 +0200, Michael Walle wrote:
> The SECT_4K_PMC flag will set a device specific opcode for the 4k sector
> erase. Instead of handling it in the core, we can move it to a
> late_init(). In that late init, loop over all erase types, look for the
> 4k size and replace the opcode.
>
>
Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git spi-nor/next, thanks!
[1/1] mtd: spi-nor: move SECT_4K_PMC special handling
https://git.kernel.org/mtd/c/77d4ac6d38
--
Regards,
Pratyush Yadav
Texas Instruments Inc.