On Mon, May 30, 2016 at 10:57:10AM +0200, Michal Suchanek wrote: > Hello, > > On 30 May 2016 at 10:37, Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote: > > On Thu, May 26, 2016 at 07:25:24PM -0000, Michal Suchanek wrote: > >> The sun4i spi hardware can trasfer at most 63 bytes of data without DMA > >> support so report the limitation. Same on sun6i. > > > > Is it? Is there timeouts on the A31 and later SoCs? > > > > I have no sun6i hardware to test with. > > This is an advisory limit you can query and it better be smaller > rather than unreliable. The hard limit in the driver is still > SUN6I_FIFO_DEPTH (which is 128 bytes on sun6i). > > You can test his without any actual SPI device. Unused pins you can > multiplex as SPI suffice. Ok, for the time being: Acked-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> Thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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