Re: [PATCH linux-next v5 1/1] spi: imx: dynamic burst length adjust for PIO mode

[Oleksij Rempel <ore@xxxxxxxxxxxxxx>]

On Thu, Aug 10, 2017 at 01:50:08PM +0900, Jiada Wang wrote:
> 
> previously burst length (BURST_LENGTH) is always set to equal
> to bits_per_word, causes a 10us gap between each word in
> transfer, which significantly affects performance.
> 
> This patch uses 32 bits transfer to simulate lower bits transfer,
> and adjusts burst length runtimely to use biggeest burst length
> as possible to reduce the gaps in transfer for PIO mode.
> 
> Signed-off-by: Jiada Wang <jiada_wang@xxxxxxxxxx>

Tested-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>

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