IMX8MM request_threaded_irq Call trace !! Please Help me

tzeng015 · ‎11-23-2022

Hi all

I am porting MCP2518(Can Bus) via SPI interface to IMX8MM. I am in troubled now almost a month.

(1) This is my DTS arragne ( interrupt-parent = <&gpio4>; interrupts = <14 IRQ_TYPE_LEVEL_LOW>; )

&ecspi1 {
#address-cells = <1>;
#size-cells = <0>;
fsl,spi-num-chipselects = <1>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi1_gigabyte &pinctrl_ecspi1_cs_gigabyte>;
cs-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
status = "okay";
can1: can1@0 {
compatible = "microchip,mcp2518fd";
reg = <0>;
clocks = <&can0_osc>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai1_can1_int_3v3_soc_gigabyte>;
spi-max-frequency = <20000000>;
interrupt-parent = <&gpio4>;
interrupts = <14 IRQ_TYPE_LEVEL_LOW>;
//interrupts-extended = <&gpio4 14 IRQ_TYPE_LEVEL_LOW>;
//interrupts = <14 IRQ_TYPE_EDGE_FALLING>;
vdd-supply = <&reg_3v3>;
xceiver-supply = <&reg_5v0>;
status = "okay";
};

};

(2) I sent this cmd "ip link set up can0 type can bitrate 500000"

It is call trace.

(3) Please see the attach file, I don't do any thing but the interrupt can't work.

tzeng015 · ‎11-29-2022

Hi

MX8MM_IOMUXC_SAI1_TXD2_GPIO4_IO14

MX8MM_IOMUXC_SAI1_TXD3_GPIO4_IO15

These two pins seem can't use well as interrupt PINs.

Do you have the same question ?

tzeng015

Zhiming_Liu · ‎11-23-2022

Try to disable SAI1 node and comment SAI1_TX_DATA2

And add irq pinctl refer pinctrl_i2c2_synaptics_dsx_io

pinctrl_i2c2_synaptics_dsx_io: synaptics_dsx_iogrp {
		fsl,pins = <
			MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9               0x19    /* Touch int */
		>;
	};

tzeng015 · ‎11-29-2022