Commits
Thomas Chou committed e5720823f6f
cfi flash: add status polling method for amd flash This patch adds status polling method to offer an alternative to data toggle method for amd flash chips. This patch is needed for nios2 cfi flash interface, where the bus controller performs 4 bytes read cycles for a single byte read instruction. The data toggle method can not detect chip busy status correctly. So we have to poll DQ7, which will be inverted when the chip is busy. This feature is enabled with the config def, CONFIG_SYS_CFI_FLASH_STATUS_POLL Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Stefan Roese <sr@denx.de>