* Re: [PATCH] ARM: dts: imx6q: Use correct SDMA script for SPI5 core [not found] <20180522174509.18154-1-sean.nyekjaer@prevas.dk> @ 2018-05-22 17:49 ` Fabio Estevam 2018-06-11 6:41 ` Shawn Guo 1 sibling, 0 replies; 2+ messages in thread From: Fabio Estevam @ 2018-05-22 17:49 UTC (permalink / raw) To: Sean Nyekjaer Cc: Sascha Hauer, linux-spi, Anton Bondarenko, Mark Brown, stable, Shawn Guo, moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE On Tue, May 22, 2018 at 2:45 PM, Sean Nyekjaer <sean.nyekjaer@prevas.dk> wrote: > According to the reference manual the shp_2_mcu / mcu_2_shp > scripts must be used for devices connected through the SPBA. > > This fixes an issue we saw with DMA transfers. > Sometimes the SPI controller RX FIFO was not empty after a DMA > transfer and the driver got stuck in the next PIO transfer when > it read one word more than expected. > > commit dd4b487b32a35 ("ARM: dts: imx6: Use correct SDMA script > for SPI cores") is fixing the same issue but only for SPI1 - 4. > > Fixes: 677940258dd8e ("ARM: dts: imx6q: enable dma for ecspi5") > Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk> Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] ARM: dts: imx6q: Use correct SDMA script for SPI5 core [not found] <20180522174509.18154-1-sean.nyekjaer@prevas.dk> 2018-05-22 17:49 ` [PATCH] ARM: dts: imx6q: Use correct SDMA script for SPI5 core Fabio Estevam @ 2018-06-11 6:41 ` Shawn Guo 1 sibling, 0 replies; 2+ messages in thread From: Shawn Guo @ 2018-06-11 6:41 UTC (permalink / raw) To: Sean Nyekjaer Cc: s.hauer, linux-spi, anton.bondarenko.sama, broonie, stable, linux-arm-kernel On Tue, May 22, 2018 at 07:45:09PM +0200, Sean Nyekjaer wrote: > According to the reference manual the shp_2_mcu / mcu_2_shp > scripts must be used for devices connected through the SPBA. > > This fixes an issue we saw with DMA transfers. > Sometimes the SPI controller RX FIFO was not empty after a DMA > transfer and the driver got stuck in the next PIO transfer when > it read one word more than expected. > > commit dd4b487b32a35 ("ARM: dts: imx6: Use correct SDMA script > for SPI cores") is fixing the same issue but only for SPI1 - 4. > > Fixes: 677940258dd8e ("ARM: dts: imx6q: enable dma for ecspi5") > Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk> Applied, thanks. ^ permalink raw reply [flat|nested] 2+ messages in thread
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2018-05-22 17:49 ` [PATCH] ARM: dts: imx6q: Use correct SDMA script for SPI5 core Fabio Estevam
2018-06-11 6:41 ` Shawn Guo
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