Hydrocactus Posted October 4, 2018 Posted October 4, 2018 Hi there, I'm trying to made a dts file to handle a pican2 hat on ROCK64 armbian, but now I'm stuck. I'm a noob in writing dts files, I've tried to take as exemple dts from RPI and Thinker. edit: I've rebuild the kernel, and build the mcp251x.ko module, it load like a charm. But I assume I've to write a correct .dts file to link it to my devices tree. here is my loaded modules list: Module Size Used by can_bcm 24576 0 can_raw 20480 0 can 53248 2 can_bcm,can_raw mali 262144 0 rt2800usb 28672 0 rt2800lib 81920 1 rt2800usb rt2x00usb 20480 1 rt2800usb rt2x00lib 49152 3 rt2x00usb,rt2800lib,rt2800usb zram 32768 5 lz4_compress 16384 1 zram mcp251x 20480 0 dw_hdmi_i2s_audio 16384 0 can_dev 20480 1 mcp251x binfmt_misc 20480 1 ip_tables 24576 0 x_tables 32768 1 ip_tables autofs4 40960 2 uas 20480 0 usb_storage 61440 1 uas Cannot find device "can0" eth0 lo wlx00c141390c5a And as you can see, there is no can0 devices in /sys/class/net. here is my dts file: /dts-v1/; /plugin/; / { compatible = "rockchip,rk3328", "pine64,rock64"; fragment@0 { target-path = "/spi@ff190000"; //target = <&spi0>; __overlay__ { status="okay"; spidev@0{ status = "disabled"; }; spidev@1{ status = "disabled"; }; }; }; /* the interrupt pin of the can-controller */ fragment@1 { target-path = "/pinctrl/gpio3@ff240000"; //target = <&gpio3>; __overlay__ { can0_pins: can0_pins { rockchip,pins = <0 7 0 &pcfg_pull_none>; //phandle = <1>; }; }; }; /* the clock/oscillator of the can-controller */ fragment@2 { target-path = "/"; __overlay__ { /* external oscillator of mcp2515 on SPI0.0 */ can0_osc: can0_osc { compatible = "fixed-clock"; #clock-cells = <0>; clock-frequency = <16000000>; }; }; }; /* the spi config of the can-controller itself binding everything together */ fragment@3 { target-path = "/spi@ff190000"; //target = <&spi0>; __overlay__ { /* needed to avoid dtc warning */ #address-cells = <1>; #size-cells = <0>; can0: can0@0 { //phandle = <1>; reg = <0>; compatible = "microchip,mcp2515"; pinctrl-names = "default"; pinctrl-0 = <&can0_pins>; //pinctrl-0 = "/pinctrl/gpio3@ff240000/can0_pins/"; spi-max-frequency = <10000000>; interrupt-parent = <&gpio3>; //interrupt-parent = "/pinctrl/gpio3@ff240000"; interrupts = <7 0x2>; // 7 2 //clocks = "/can0_osc"; clocks = <&can0_osc>; }; }; }; }; here is what I can read from dmesg: pi@rock64:/boot/overlay-user$ dmesg | fgrep -i spi [ 0.199580] bus: 'spi': registered [ 0.199591] device class 'spi_master': registering [ 0.215439] device: 'ff190000.spi': device_add [ 0.215471] bus: 'platform': add device ff190000.spi [ 0.215560] PM: Adding info for platform:ff190000.spi [ 2.069101] bus: 'spi': add driver cros-ec-spi [ 2.069297] device class 'spi_transport': registering [ 2.069329] device class 'spi_host': registering [ 2.070797] bus: 'spi': add driver m25p80 [ 2.070861] device class 'spidev': registering [ 2.070890] bus: 'spi': add driver spidev [ 2.070956] bus: 'platform': add driver rockchip-spi [ 2.071145] bus: 'platform': driver_probe_device: matched device ff190000.spi with driver rockchip-spi [ 2.071162] bus: 'platform': really_probe: probing driver rockchip-spi with device ff190000.spi [ 2.071495] rockchip-spi ff190000.spi: no init pinctrl state [ 2.071552] rockchip-spi ff190000.spi: no sleep pinctrl state [ 2.071566] rockchip-spi ff190000.spi: no idle pinctrl state [ 2.071795] rockchip-spi ff190000.spi: no high_speed pinctrl state [ 2.071820] device: 'spi32766': device_add [ 2.072075] PM: Adding info for No Bus:spi32766 [ 2.072326] device: 'spi32766.0': device_add [ 2.072362] bus: 'spi': add device spi32766.0 [ 2.072582] PM: Adding info for spi:spi32766.0 [ 2.072661] rockchip-spi ff190000.spi: chipselect 0 already in use [ 2.072675] spi_master spi32766: spi_device register error /spi@ff190000/flash@0 [ 2.072692] spi_master spi32766: Failed to create SPI device for /spi@ff190000/flash@0 [ 2.072709] driver: 'rockchip-spi': driver_bound: bound to device 'ff190000.spi' [ 2.072758] bus: 'platform': really_probe: bound device ff190000.spi to driver rockchip-spi [ 8.643523] bus: 'spi': add driver mcp251x [ 8.643560] bus: 'spi': driver_probe_device: matched device spi32766.0 with driver mcp251x [ 8.643570] bus: 'spi': really_probe: probing driver mcp251x with device spi32766.0 [ 8.643678] mcp251x spi32766.0: no pinctrl handle [ 8.646051] mcp251x spi32766.0: Looking up vdd-supply from device tree [ 8.646071] mcp251x spi32766.0: Looking up vdd-supply property in node /spi@ff190000/can0@0 failed [ 8.648100] mcp251x spi32766.0: Looking up xceiver-supply from device tree [ 8.648120] mcp251x spi32766.0: Looking up xceiver-supply property in node /spi@ff190000/can0@0 failed [ 8.661924] mcp251x: probe of spi32766.0 rejects match -19 pi@rock64:/boot/overlay-user$ help me plz.
chwe Posted October 4, 2018 Posted October 4, 2018 On 10/4/2018 at 4:34 PM, Hydrocactus said: [ 8.646051] mcp251x spi32766.0: Looking up vdd-supply from device tree [ 8.646071] mcp251x spi32766.0: Looking up vdd-supply property in node /spi@ff190000/can0@0 failed [ 8.648100] mcp251x spi32766.0: Looking up xceiver-supply from device tree [ 8.648120] mcp251x spi32766.0: Looking up xceiver-supply property in node /spi@ff190000/can0@0 failed [ 8.661924] mcp251x: probe of spi32766.0 rejects match -19 Expand I assume you need at least an mpc251x driver (as module). Seems not to be here for rock64. Reveal hidden contents opi@Buildmachine:~/build/config/kernel$ grep "MCP251X" *.config linux-cubox-dev.config:# CONFIG_CAN_MCP251X is not set linux-cubox-next.config:# CONFIG_CAN_MCP251X is not set linux-meson64-default.config:# CONFIG_CAN_MCP251X is not set linux-meson64-dev.config:CONFIG_CAN_MCP251X=m linux-meson64-next.config:CONFIG_CAN_MCP251X=m linux-meson-default.config:CONFIG_CAN_MCP251X=m linux-mvebu64-default.config:CONFIG_CAN_MCP251X=m linux-mvebu64-dev.config:CONFIG_CAN_MCP251X=m linux-mvebu64-next.config:CONFIG_CAN_MCP251X=m linux-mvebu-default.config:CONFIG_CAN_MCP251X=m linux-odroidc1-default.config:CONFIG_CAN_MCP251X=m linux-odroidc1-next.config:CONFIG_CAN_MCP251X=y linux-odroidc2-default.config:# CONFIG_CAN_MCP251X is not set linux-odroidxu4-dev.config:CONFIG_CAN_MCP251X=m linux-odroidxu4-next.config:CONFIG_CAN_MCP251X=m linux-rockchip-default.config:CONFIG_CAN_MCP251X=y linux-rockchip-next.config:CONFIG_CAN_MCP251X=y linux-s5p6818-dev.config:CONFIG_CAN_MCP251X=m linux-s5p6818-next.config:CONFIG_CAN_MCP251X=m linux-sun7i-default.config:# CONFIG_CAN_MCP251X is not set linux-sun8i-dev.config:CONFIG_CAN_MCP251X=m linux-sunxi64-dev.config:CONFIG_CAN_MCP251X=m linux-sunxi64-next.config:CONFIG_CAN_MCP251X=m linux-sunxi-dev.config:CONFIG_CAN_MCP251X=m linux-sunxi-next.config:CONFIG_CAN_MCP251X=m linux-udoo-default.config:# CONFIG_CAN_MCP251X is not set linux-udoo-neo-default.config:# CONFIG_CAN_MCP251X is not set Go through this one to see how you can change that.
Hydrocactus Posted October 4, 2018 Author Posted October 4, 2018 I've edited my post, because I've forgot to tell, that at first I've rebuild my kernel and build the mcp251x.ko module.
Hydrocactus Posted October 17, 2018 Author Posted October 17, 2018 vdd-suppl and xceiver-supply are optional so this is not the issue
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