Hi Marc, I have disabled DMAs in imx7s.dtsi for all ecspis and recompile the device tree. Still get the same failure. Thanks Niels ecspi2: spi@30830000 { #address-cells = <1>; #size-cells = <0>; compatible = "fsl,imx7d-ecspi", "fsl,imx51-ecspi"; reg = <0x30830000 0x10000>; interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>; clocks = <&clks IMX7D_ECSPI2_ROOT_CLK>, <&clks IMX7D_ECSPI2_ROOT_CLK>; clock-names = "ipg", "per"; /* dmas = <&sdma 2 7 1>, <&sdma 3 7 2>; dma-names = "rx", "tx"; */ status = "disabled"; }; Marc Kleine-Budde schrieb am 31.01.2022 08:42 (GMT +00:00): > On 31.01.2022 09:33:04, petter@xxxxxxxxxx wrote: >> I am working on an IMX7D board. Some time ago I have back-ported the >> MCP2518FD driver to the official 5.4.70 NXP kernel and it works fine. >> >> I am struggleing to get the mcp driver working on the latest nxp >> kernel 5.10.72. >> >> Same hardware. >> >> I did not find any unusal in the logs. pinctrl did not complain, spi >> seems to initialize normal. >> >> The old kernel with the new (almost old one) device tree works. The >> new kernel did not work with the old or new device tree. >> >> At the moment I am stuck. Could be anything. Must not be the driver >> itself. > > Is SPI DMA enabled? Try disabling it. > > regards, > Marc > > -- > Pengutronix e.K. | Marc Kleine-Budde | > Embedded Linux | https://www.pengutronix.de | > Vertretung West/Dortmund | Phone: +49-231-2826-924 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | >