On Fri, Jun 5, 2020 at 6:16 PM Pratyush Yadav p.yadav@ti.com wrote:
Since this flash doesn't have a Profile 1.0 table, the Octal DTR capabilities are enabled in the post SFDP fixup, along with the 8D-8D-8D fast read settings.
Enable Octal DTR mode with 20 dummy cycles to allow running at the maximum supported frequency of 200Mhz.
The flash supports the soft reset sequence. So, add the flag in the flash's info.
Signed-off-by: Pratyush Yadav p.yadav@ti.com
drivers/mtd/spi/Kconfig | 8 ++++ drivers/mtd/spi/spi-nor-core.c | 87 ++++++++++++++++++++++++++++++++++ drivers/mtd/spi/spi-nor-ids.c | 4 +- include/linux/mtd/spi-nor.h | 10 +++- 4 files changed, 106 insertions(+), 3 deletions(-)
diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig index ecfed6d215..9c549b39b7 100644 --- a/drivers/mtd/spi/Kconfig +++ b/drivers/mtd/spi/Kconfig @@ -170,6 +170,14 @@ config SPI_FLASH_STMICRO help Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx)
+config SPI_FLASH_MT35XU
bool "Micron MT35XU chip support"depends on SPI_FLASH_STMICROhelpAdd support for the Micron MT35XU chip. This is a separate configbecause the fixup hooks for this flash add extra size overhead. Boardsthat don't use the flash can disable this to save space.
This one and 20/21 are introducing the Kconfig options for single type flashes in the micron family, does other effect size issues if dtr make it available for STMICRO chips? if so, having a flash option of dtr would much better and I hope Linux does it similarly.
Jagan.