Messages in this thread | | | From | Schrempf Frieder <> | Subject | Re: [PATCH v5 11/15] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm | Date | Tue, 24 Sep 2019 13:27:36 +0000 |
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Hi Robin,
> From: Robin Gong <yibin.gong at nxp.com> > > Because the number of ecspi1 rx event on i.mx8mm is 0, the condition > check ignore such special case without dma channel enabled, which caused > ecspi1 rx works failed. Actually, no need to check event_id0/event_id1 > and replace checking 'event_id1' with 'DMA_DEV_TO_DEV', so that configure > event_id1 only in case DEV_TO_DEV. > > Signed-off-by: Robin Gong <yibin.gong at nxp.com> > Acked-by: Vinod Koul <vkoul at kernel.org>
I have a custom board with i.MX8MM and SPI flash on ecspi1. I'm currently testing with v5.3 and as SPI didn't work, I tried two different things:
1. Removing 'dmas' and 'dma-names' from the ecspi1 node in imx8mm.dtsi, to use PIO instead of DMA. This works as expected and the driver boots with the following messages:
spi_imx 30820000.spi: dma setup error -19, use pio m25p80 spi0.0: mx25v8035f (1024 Kbytes) spi_imx 30820000.spi: probed
2. Applying your patchset and use DMA. In this case, the flash also works fine, but there are some error messages printed while booting:
spi_master spi0: I/O Error in DMA RX m25p80 spi0.0: SPI transfer failed: -110 spi_master spi0: failed to transfer one message from queue m25p80 spi0.0: mx25v8035f (1024 Kbytes) spi_imx 30820000.spi: probed
It would be great to get your patches merged and fix SPI + DMA, but for i.MX8MM, we need to get rid of the error messages. Do you have an idea, what's wrong?
Thanks, Frieder | |