Thread (1 message) 1 message, 1 author, 2018-05-22
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[PATCH] ARM: dts: imx6q: Use correct SDMA script for SPI5 core

From: festevam@gmail.com (Fabio Estevam)
Date: 2018-05-22 17:49:41
Also in: linux-spi

On Tue, May 22, 2018 at 2:45 PM, Sean Nyekjaer [off-list ref] 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 <redacted>
Reviewed-by: Fabio Estevam <redacted>
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