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| author | Patrick Delaunay <patrick.delaunay@foss.st.com> | 2021-09-22 18:29:08 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-09-28 12:03:20 -0400 |
| commit | a4f2d83414557f2ad7b63d537e2c31790d0f184d (patch) | |
| tree | 3256361ce7ecfb8783ec4b9c9bd3a00b157cc2d1 /include/mtd.h | |
| parent | b218f865e8a7defdcb2c6d87e8d93f9ea7e4e9f5 (diff) | |
| download | u-boot-a4f2d83414557f2ad7b63d537e2c31790d0f184d.tar.gz u-boot-a4f2d83414557f2ad7b63d537e2c31790d0f184d.tar.bz2 u-boot-a4f2d83414557f2ad7b63d537e2c31790d0f184d.zip | |
mtd: spi: nor: force mtd name to "nor%d"
Force the mtd name of spi-nor to "nor" + the driver sequence number:
"nor0", "nor1"... beginning after the existing nor devices.
This patch is coherent with existing "nand" and "spi-nand"
mtd device names.
When CFI MTD NOR device are supported, the spi-nor index is chosen after
the last CFI device defined by CONFIG_SYS_MAX_FLASH_BANKS.
When CONFIG_SYS_MAX_FLASH_BANKS_DETECT is activated, this config
is replaced by to cfi_flash_num_flash_banks in the include file
mtd/cfi_flash.h.
This generic name "nor%d" can be use to identify the mtd spi-nor device
without knowing the real device name or the DT path of the device,
used with API get_mtd_device_nm() and is used in mtdparts command.
This patch also avoids issue when the same NOR device is present 2 times,
for example on STM32MP15F-EV1:
STM32MP> mtd list
SF: Detected mx66l51235l with page size 256 Bytes, erase size 64 KiB, \
total 64 MiB
List of MTD devices:
* nand0
- type: NAND flash
- block size: 0x40000 bytes
- min I/O: 0x1000 bytes
- OOB size: 224 bytes
- OOB available: 118 bytes
- ECC strength: 8 bits
- ECC step size: 512 bytes
- bitflip threshold: 6 bits
- 0x000000000000-0x000040000000 : "nand0"
* mx66l51235l
- device: mx66l51235l@0
- parent: spi@58003000
- driver: jedec_spi_nor
- path: /soc/spi@58003000/mx66l51235l@0
- type: NOR flash
- block size: 0x10000 bytes
- min I/O: 0x1 bytes
- 0x000000000000-0x000004000000 : "mx66l51235l"
* mx66l51235l
- device: mx66l51235l@1
- parent: spi@58003000
- driver: jedec_spi_nor
- path: /soc/spi@58003000/mx66l51235l@1
- type: NOR flash
- block size: 0x10000 bytes
- min I/O: 0x1 bytes
- 0x000000000000-0x000004000000 : "mx66l51235l"
The same mtd name "mx66l51235l" identify the 2 instances
mx66l51235l@0 and mx66l51235l@1.
This patch fixes a ST32CubeProgrammer / stm32prog command issue
with nor0 target on STM32MP157C-EV1 board introduced by
commit b7f060565e31 ("mtd: spi-nor: allow registering multiple MTDs when
DM is enabled").
Fixes: b7f060565e31 ("mtd: spi-nor: allow registering multiple MTDs when DM is enabled")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
[trini: Add <dm/device.h> to <mtd.h> for DM_MAX_SEQ_STR]
Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'include/mtd.h')
| -rw-r--r-- | include/mtd.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/mtd.h b/include/mtd.h index b569331edb..f9e5082446 100644 --- a/include/mtd.h +++ b/include/mtd.h @@ -6,10 +6,15 @@ #ifndef _MTD_H_ #define _MTD_H_ +#include <dm/device.h> +#include <jffs2/load_kernel.h> #include <linux/mtd/mtd.h> int mtd_probe_devices(void); void board_mtdparts_default(const char **mtdids, const char **mtdparts); +/* compute the max size for the string associated to a dev type */ +#define MTD_NAME_SIZE(type) (sizeof(MTD_DEV_TYPE(type)) + DM_MAX_SEQ_STR) + #endif /* _MTD_H_ */ |