Sevc Dominik

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  1. On line status = "disabled" change to "okay" and move line to different position then works..
  2. Hi all. I have problem with SPI on my board . I find solution but I want to know why .. On first : Linux orangepizero 5.4.20-sunxi #20.02.1 SMP Mon Feb 17 02:09:41 CET 2020 armv7l armv7l armv7l GNU/Linux If go to armbian-config and enable SpiDev .. then reboot not find SPI device on my dev tree .. if look to armbianEnv.txt there is spi-spidev but on dev tree no SPI device .. My solution is this : on /boot/dtb/overlay is file sun8i-h3-spi-spidev.dtbo , decompile it and there is this text : /dts-v1/; /plugin/; / { compatible = "allwinner,sun8i-h3"; fragment@0 { target-path = "/aliases"; __overlay__ { spi0 = "/soc/spi@01c68000"; spi1 = "/soc/spi@01c69000"; }; }; fragment@1 { target = <&spi0>; __overlay__ { #address-cells = <1>; #size-cells = <0>; spidev { compatible = "spidev"; status = "disabled"; reg = <0>; spi-max-frequency = <1000000>; }; }; }; fragment@2 { target = <&spi1>; __overlay__ { #address-cells = <1>; #size-cells = <0>; spidev { compatible = "spidev"; status = "disabled"; reg = <0>; spi-max-frequency = <1000000>; }; }; }; }; I don't know why but if change text to this : /dts-v1/; // magic: 0xd00dfeed // totalsize: 0x314 (788) // off_dt_struct: 0x38 // off_dt_strings: 0x2b4 // off_mem_rsvmap: 0x28 // version: 17 // last_comp_version: 16 // boot_cpuid_phys: 0x0 // size_dt_strings: 0x60 // size_dt_struct: 0x27c / { compatible = "allwinner,sun8i-h3"; fragment@0 { target-path = "/aliases"; __overlay__ { spi0 = "/soc/spi@1c68000"; spi1 = "/soc/spi@1c69000"; }; }; fragment@1 { target = <0xffffffff>; __overlay__ { status = "okay"; #address-cells = <0x00000001>; #size-cells = <0x00000000>; spidev@0 { compatible = "spidev"; reg = <0x00000000>; spi-max-frequency = <0x000f4240>; }; }; }; fragment@2 { target = <0xffffffff>; __overlay__ { status = "okay"; #address-cells = <0x00000001>; #size-cells = <0x00000000>; spidev@0 { compatible = "spidev"; reg = <0x00000000>; spi-max-frequency = <0x000f4240>; }; }; }; __fixups__ { spi0 = "/fragment@1:target:0"; spi1 = "/fragment@2:target:0"; }; }; and recompile then all working .. on my dev tree I see two devices: crw-rw---- 1 root spidev 153, 0 Mar 8 16:55 /dev/spidev0.0 crw-rw---- 1 root spidev 153, 1 Mar 8 16:55 /dev/spidev1.0 I test it on my Osciloscope and see signal , then I connect MISO wit MOSI and make test with spidev-test and work .. now I connect real SPI device (any radio nRF24L01 or similar .. and try real test.. question is why I must do this ??? what is wrong?? best regards..