On 02.12.2017 10:15, Marek Vasut wrote:
On 11/18/2017 08:09 PM, York Sun wrote:
Commit 72443c7f7d21 ("mtd: cfi: Add support for status register polling") added a feature check to determine if status register is available for certain flash chips. The "lower software bits" register used to determine this feature is not backward compati- ble. Older flash chips without this feature has reserved value 0xff. Instead of checking "lower software bits" register, use CFI primary vendor-specific extended query. Since CFI version 1.4, software features can be read from offset 0x53 according to document AN201168 from Cypress.
Signed-off-by: York Sun york.sun@nxp.com CC: Marek Vasut marek.vasut@gmail.com
On R8A7796 M3 ULCB Tested-by: Marek Vasut marek.vasut@gmail.com
Applied to u-boot-cfi-flash/master.
Thanks, Stefan