Tx2 spi can't be enabled

[ShaneCCC]

Have a reference to below link to set the pin by modified the cfg file.

TX2 SPI4

Just started with TX2, and I’ve problems getting anything out from the SPI on J21. Running R32.1, Jetpack 4.2. I’ve modified the SPI on 3240000 in the tegra186-quill-p3310-1000-a00-00-base.dtb: spi@3240000 { compatible = "nvidia,tegra186-spi"; reg = <0x0 0x3240000 0x0 0x10000>; interrupts = <0x0 0x27 0x4>; iommus = <0x11 0x20>; dmas = <0x25 0x12 0x25 0x12>; dma-names = "rx", "tx"; nvidia,clk-parents = "pll_p", "clk_m"; clocks = <0x10 0x4a 0x10 0x10d 0x10 0x261>; clock-names =…

SPI works with JetPack 3.3 but not JetPack 4.2

Hello, I have modified the device tree using JetPack 3.3 and managed to get SPI working, including talking to an actual SPI slave device from the TX2. However, I wish to use the latest JetPack 4.2 (to be up-to-date and because other features work in 4.2 that I do not have working in 3.3), but when I make the same changes to the device tree for supporting SPI with JetPack 4.2, the SPI no longer works. I see my changes to the device tree, the /dev/spidevM.N devices show up, and I can open/read/wr…