-----Original Message----- From: Ang, Chee Hong chee.hong.ang@intel.com Sent: Wednesday, August 5, 2020 5:33 PM To: u-boot@lists.denx.de Cc: Phil Edworthy PHIL.EDWORTHY@renesas.com; Vignesh R vigneshr@ti.com; Tom Rini trini@konsulko.com; See, Chin Liang chin.liang.see@intel.com; Tan, Ley Foon ley.foon.tan@intel.com; Ang, Chee Hong chee.hong.ang@intel.com; Chee, Tien Fong tien.fong.chee@intel.com; Lim, Elly Siew Chin elly.siew.chin.lim@intel.com Subject: [PATCH v1] spi: cadence-qspi: Fix QSPI write issues
QSPI driver perform chip select on every flash read/write access. The driver need to disable/enable the QSPI controller while performing chip select. This may cause some data lost especially the QSPI controller is configured to run at slower speed as it may take longer time to access the flash device. This patch prevent the driver from disable/enable the QSPI controller too soon and inadvertently halting any ongoing flash read/write access by ensuring the QSPI controller is always in idle mode after each read/write access.
Signed-off-by: Chee Hong Ang chee.hong.ang@intel.com
drivers/spi/cadence_qspi_apb.c | 9 +++++++++ 1 file changed, 9 insertions(+)
Reviewed-by: Ley Foon Tan ley.foon.tan@intel.com
Regards Ley Foon