Messages in this thread | | | From | Fabio Estevam <> | Date | Mon, 29 May 2017 08:07:42 -0300 | Subject | Re: [PATCH linux-next v3 1/1] spi: imx: dynamic burst length adjust for PIO mode |
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Hi Jiada,
On Fri, May 26, 2017 at 2:02 AM, <jiada_wang@mentor.com> wrote: > From: Jiada Wang <jiada_wang@mentor.com> > > 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.
Just curious: what is the performance gain you observe with this patch?
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