Re: [PATCH] arch: arm64: dts: add delay between CS and CLK signal for flash device

Shawn Guo
2021-11-21T09:17:45Z

On Wed, Nov 03, 2021 at 11:38:38AM +0800, Meng Li wrote:
> Based on commit d59c90a2400f("spi: spi-fsl-dspi: Convert
> TCFQ users to XSPI FIFO mode ") and 6c1c26ecd9a3("spi:
> spi-fsl-dspi: Accelerate transfers using larger word size if possible"),
> on ls1043a-rdb platform, the spi work mode is changed from TCFQ
> mode to XSPI mode. In order to keep the transmission sequence matches
> with flash device, it is need to add delay between CS and CLK signal.
> The strategy of generating delay value refers to QorIQ LS1043A
> Reference Manual.
>
> Signed-off-by: Meng Li <Meng.Li@windriver.com>

Updated the subject as below and applied the patch.

arm64: dts: fsl-ls1043a-rdb: add delay between CS and CLK signal for flash device

Shawn