MCP251x failes setup CAN-bus communication with error=110

[timok90]

My project uses the mcp2515 chip to communicate via CAN-bus.
After kernel update following failure occurs:

~ $ dmesg | grep -i spi
[    7.567794] mcp251x spi0.0: MCP251x didn't enter in conf mode after reset 
[    7.567855] mcp251x spi0.0: Probe failed, err=110
[    7.567948] mcp251x: probe of spi0.0 failed with error -110 

My overlay configuration is:

dtparam=spi=on
dtoverlay=mcp2515-can0,oscillator=16000000,interrupt=25,spimaxfrequency=500000

My current kernel version is:
Linux 5.10.11-v7l+ #1399 SMP Thu Jan 28 12:09:48 GMT 2021 armv7l GNU/Linux

os:
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"

and additionally I use the can-utils package.

[pelwell]

This sounds like a hardware problem - have you double-checked all of your wiring?

[timok90]

I've checked it but with no changes. Rework all the wiring helped. So, it was a wiring issue.

[Elhkiati2000]

I encountered the same error while attempting to use the mcp2515 chip for CAN-bus communication over SPI 1-0/1/2 on the RPi 3B+. Communication over SPI 0-0/1cs is successful using the "mcp2515-can0.dtbo" and "mcp2515-can1.dtbo" overlays. I've also successfully tested SPI 0 with the newly introduced overlay "mcp2515.dtbo" found in the Raspberry OS, which functions correctly. However, attempting to use the chip with SPI1-0/1/2cs results in the same error.

Below is the description of the "mcp2515.dtbo" overlay located in /boot/overlays/README:

Name:   mcp2515
Info:   Configures the MCP2515 CAN controller on spi0/1/2
        For devices on spi1 or spi2, the interfaces should be enabled
        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
Load:   dtoverlay=mcp2515,<param>=<val>
        Params: spi<n>-<m>              Configure device at spi<n>, cs<m> (boolean, required)
        oscillator                                  Clock frequency for the CAN controller (Hz)
        speed                                       Maximum SPI frequence (Hz)
        interrupt                                  GPIO for interrupt signal

• The connections are :

INT -- 22 (GPIO 25)
SCK -- 40 (GPIO 21 , SPI1 SCLK)
SI -- 38 (GPIO 20 , SPI1 MOSI)
SO -- 35 (GPIO 19 , SPI1 MISO)
CS -- 36 (GPIO 16 , SPI1 CS2)
GND -- 6 (GND)
VCC - 1 (3V3)

• The content of /boot/config.txt file is as follows :

dtparam=spi=on
dtoverlay=spi1-3cs,cs0_spidev=disabled,cs1_spidev=disabled
dtoverlay=mcp2515,spi12=16,oscillator=16000000,speed=10000000,interrupt=25

• The decompiled content of the "mcp2515.dtbo" file located in /boot/overlays, resulting in "mcp2515.dts", is as detailed below:

`/dts-v1/;

/ {
compatible = "brcm,bcm2835";

fragment@0 {
	target = <0xffffffff>;

	__dormant__ {
		status = "disabled";
	};
};

fragment@1 {
	target = <0xffffffff>;

	__dormant__ {
		status = "disabled";
	};
};

fragment@2 {
	target-path = "spi1/spidev@0";

	__dormant__ {
		status = "disabled";
	};
};

fragment@3 {
	target-path = "spi1/spidev@1";

	__dormant__ {
		status = "disabled";
	};
};

fragment@4 {
	target-path = "spi1/spidev@2";

	__dormant__ {
		status = "disabled";
	};
};

fragment@5 {
	target-path = "spi2/spidev@0";

	__dormant__ {
		status = "disabled";
	};
};

fragment@6 {
	target-path = "spi2/spidev@1";

	__dormant__ {
		status = "disabled";
	};
};

fragment@7 {
	target-path = "spi2/spidev@2";

	__dormant__ {
		status = "disabled";
	};
};

fragment@8 {
	target = <0xffffffff>;

	__overlay__ {
		mcp2515_pins {
			brcm,pins = <0x19>;
			brcm,function = <0x00>;
			phandle = <0x01>;
		};
	};
};

fragment@9 {
	target-path = "/clocks";

	__overlay__ {
		mcp2515-osc {
			#clock-cells = <0x00>;
			compatible = "fixed-clock";
			clock-frequency = <0xf42400>;
			phandle = <0x02>;
		};
	};
};

fragment@10 {
	target = <0xffffffff>;
	phandle = <0x03>;

	__overlay__ {
		status = "okay";
		#address-cells = <0x01>;
		#size-cells = <0x00>;

		mcp2515@0 {
			compatible = "microchip,mcp2515";
			reg = <0x00>;
			pinctrl-names = "default";
			pinctrl-0 = <0x01>;
			spi-max-frequency = <0x989680>;
			interrupt-parent = <0xffffffff>;
			interrupts = <0x19 0x08>;
			clocks = <0x02>;
			phandle = <0x04>;
		};
	};
};

__overrides__ {
	spi0-0 = [00 00 00 00 2b 30 00 00 00 00 03 74 61 72 67 65 74 3a 30 3d 00 ff ff ff ff 00 00 00 04 72 65 67 3a 30 3d 30 00 00 00 00 01 6e 61 6d 65 3d 6d 63 70 32 35 31 35 5f 73 70 69 30 5f 30 5f 70 69 6e 73 00 00 00 00 02 6e 61 6d 65 3d 6d 63 70 32 35 31 35 2d 73 70 69 30 2d 30 2d 6f 73 63 00];
	spi0-1 = [00 00 00 00 2b 31 00 00 00 00 03 74 61 72 67 65 74 3a 30 3d 00 ff ff ff ff 00 00 00 04 72 65 67 3a 30 3d 31 00 00 00 00 01 6e 61 6d 65 3d 6d 63 70 32 35 31 35 5f 73 70 69 30 5f 31 5f 70 69 6e 73 00 00 00 00 02 6e 61 6d 65 3d 6d 63 70 32 35 31 35 2d 73 70 69 30 2d 31 2d 6f 73 63 00];
	spi1-0 = [00 00 00 00 2b 32 00 00 00 00 03 74 61 72 67 65 74 3a 30 3d 00 ff ff ff ff 00 00 00 04 72 65 67 3a 30 3d 30 00 00 00 00 01 6e 61 6d 65 3d 6d 63 70 32 35 31 35 5f 73 70 69 31 5f 30 5f 70 69 6e 73 00 00 00 00 02 6e 61 6d 65 3d 6d 63 70 32 35 31 35 2d 73 70 69 31 2d 30 2d 6f 73 63 00];
	spi1-1 = [00 00 00 00 2b 33 00 00 00 00 03 74 61 72 67 65 74 3a 30 3d 00 ff ff ff ff 00 00 00 04 72 65 67 3a 30 3d 31 00 00 00 00 01 6e 61 6d 65 3d 6d 63 70 32 35 31 35 5f 73 70 69 31 5f 31 5f 70 69 6e 73 00 00 00 00 02 6e 61 6d 65 3d 6d 63 70 32 35 31 35 2d 73 70 69 31 2d 31 2d 6f 73 63 00];
	spi1-2 = [00 00 00 00 2b 34 00 00 00 00 03 74 61 72 67 65 74 3a 30 3d 00 ff ff ff ff 00 00 00 04 72 65 67 3a 30 3d 32 00 00 00 00 01 6e 61 6d 65 3d 6d 63 70 32 35 31 35 5f 73 70 69 31 5f 32 5f 70 69 6e 73 00 00 00 00 02 6e 61 6d 65 3d 6d 63 70 32 35 31 35 2d 73 70 69 31 2d 32 2d 6f 73 63 00];
	spi2-0 = [00 00 00 00 2b 35 00 00 00 00 03 74 61 72 67 65 74 3a 30 3d 00 ff ff ff ff 00 00 00 04 72 65 67 3a 30 3d 30 00 00 00 00 01 6e 61 6d 65 3d 6d 63 70 32 35 31 35 5f 73 70 69 32 5f 30 5f 70 69 6e 73 00 00 00 00 02 6e 61 6d 65 3d 6d 63 70 32 35 31 35 2d 73 70 69 32 2d 30 2d 6f 73 63 00];
	spi2-1 = [00 00 00 00 2b 36 00 00 00 00 03 74 61 72 67 65 74 3a 30 3d 00 ff ff ff ff 00 00 00 04 72 65 67 3a 30 3d 31 00 00 00 00 01 6e 61 6d 65 3d 6d 63 70 32 35 31 35 5f 73 70 69 32 5f 31 5f 70 69 6e 73 00 00 00 00 02 6e 61 6d 65 3d 6d 63 70 32 35 31 35 2d 73 70 69 32 2d 31 2d 6f 73 63 00];
	spi2-2 = [00 00 00 00 2b 37 00 00 00 00 03 74 61 72 67 65 74 3a 30 3d 00 ff ff ff ff 00 00 00 04 72 65 67 3a 30 3d 32 00 00 00 00 01 6e 61 6d 65 3d 6d 63 70 32 35 31 35 5f 73 70 69 32 5f 32 5f 70 69 6e 73 00 00 00 00 02 6e 61 6d 65 3d 6d 63 70 32 35 31 35 2d 73 70 69 32 2d 32 2d 6f 73 63 00];
	oscillator = [00 00 00 02 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00];
	speed = <0x04 0x7370692d 0x6d61782d 0x66726571 0x75656e63 0x793a3000>;
	interrupt = [00 00 00 01 62 72 63 6d 2c 70 69 6e 73 3a 30 00 00 00 00 04 69 6e 74 65 72 72 75 70 74 73 3a 30 00];
};

__symbols__ {
	mcp2515_pins = "/fragment@8/__overlay__/mcp2515_pins";
	clk_mcp2515_osc = "/fragment@9/__overlay__/mcp2515-osc";
	mcp2515_frag = "/fragment@10";
	mcp2515 = "/fragment@10/__overlay__/mcp2515@0";
};

__fixups__ {
	spidev0 = "/fragment@0:target:0";
	spidev1 = "/fragment@1:target:0";
	gpio = "/fragment@8:target:0\0/fragment@10/__overlay__/mcp2515@0:interrupt-parent:0";
	spi0 = "/fragment@10:target:0\0/__overrides__:spi0-0:21\0/__overrides__:spi0-1:21";
	spi1 = "/__overrides__:spi1-0:21\0/__overrides__:spi1-1:21\0/__overrides__:spi1-2:21";
	spi2 = "/__overrides__:spi2-0:21\0/__overrides__:spi2-1:21\0/__overrides__:spi2-2:21";
};

__local_fixups__ {

	fragment@10 {
		__overlay__ {
			mcp2515@0 {
				pinctrl-0 = <0x00>;
				clocks = <0x00>;
			};
		};
	};

	__overrides__ {
		spi0-0 = <0x07 0x19 0x25 0x42>;
		spi0-1 = <0x07 0x19 0x25 0x42>;
		spi1-0 = <0x07 0x19 0x25 0x42>;
		spi1-1 = <0x07 0x19 0x25 0x42>;
		spi1-2 = <0x07 0x19 0x25 0x42>;
		spi2-0 = <0x07 0x19 0x25 0x42>;
		spi2-1 = <0x07 0x19 0x25 0x42>;
		spi2-2 = <0x07 0x19 0x25 0x42>;
		oscillator = <0x00>;
		speed = <0x00>;
		interrupt = <0x00 0x10>;
	};
};

};
`
Additionally, I've tested the "mcp2515-can2-overlay.dtbo" and "mcp2515-can0-1.dtbo" overlays mentioned in issue #1804 , which resulted in the same error. I've double-checked the wiring, and it appears to be correct. Can someone assist?