Other Parts Discussed in Thread: SK-AM62B
HI ,
I am using am62x-sk evm E3 . The problem we are facing with is the touch screen. Touch Driver is goodix gt911.
Device tree configuration is
&main_i2c0 {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@14 {
compatible = "goodix,gt911";
reg = <0x14>;
interrupt-parent = <&exp1>;
interrupts = <22 IRQ_TYPE_EDGE_FALLING>;
};
};
&main_i2c1 {
exp1: gpio@22 {
compatible = "ti,tca6424";
reg = <0x22>;
gpio-controller;
#gpio-cells = <2>;
gpio-line-names = "GPIO_CPSW2_RST", "GPIO_CPSW1_RST",
"PRU_DETECT", "MMC1_SD_EN",
"VPP_LDO_EN", "EXP_PS_3V3_En",
"EXP_PS_5V0_En", "EXP_HAT_DETECT",
"GPIO_AUD_RSTn", "GPIO_eMMC_RSTn",
"UART1_FET_BUF_EN", "WL_LT_EN",
"GPIO_HDMI_RSTn", "CSI_GPIO1",
"CSI_GPIO2", "PRU_3V3_EN",
"HDMI_INTn", "PD_I2C_IRQ",
"MCASP1_FET_EN", "MCASP1_BUF_BT_EN",
"MCASP1_FET_SEL", "UART1_FET_SEL",
"TSINT#", "IO_EXP_TEST_LED";
interrupt-parent = <&main_gpio1>;
interrupts = <23 IRQ_TYPE_EDGE_FALLING>;
interrupt-controller;
#interrupt-cells = <2>;
pinctrl-names = "default";
pinctrl-0 = <&main_gpio1_ioexp_intr_pins_default>;
};
};
and the commands specified in the page
root@am62xx-evm:~# i2ctransfer -f -y 0 w3@0x3f 0x09 0x1 0x0e root@am62xx-evm:~# i2ctransfer -f -y 0 w6@0x3f 0x08 0x04 0x47 0x50 0x73 0x68 root@am62xx-evm:~# i2ctransfer -f -y 0 w1@0x3f 0x72 r9 0x08 0x40 0x40 0x00 0x00 0x61 0x40 0x02 0x00 root@am62xx-evm:~# modprobe goodix_ts [ 110.347546] irq: type mismatch, failed to map hwirq-22 for gpio@22! [ 110.353950] Goodix-TS 0-0014: supply AVDD28 not found, using dummy regulator [ 110.361425] Goodix-TS 0-0014: supply VDDIO not found, using dummy regulator [ 110.369139] Goodix-TS 0-0014: ID 911, version: 1050 [ 110.378682] Goodix-TS 0-0014: Invalid config (0, 0, 0), using defaults [ 110.385625] input: Goodix Capacitive TouchScreen as /devices/platform/bus@f0000/20000000.i2c/i2c-0/0-0014/input/input3 [ 110.396739] Goodix-TS 0-0014: request IRQ failed: -22 [ 110.448746] Goodix-TS: probe of 0-0014 failed with error -22
And before executing these commands the gpioinfo is
gpiochip3 - 24 lines: line 0: "GPIO_CPSW2_RST" unused input active-high line 1: "GPIO_CPSW1_RST" unused input active-high line 2: "PRU_DETECT" unused input active-high line 3: "MMC1_SD_EN" "regulator-3" output active-high [used] line 4: "VPP_LDO_EN" unused input active-high line 5: "EXP_PS_3V3_En" unused input active-high line 6: "EXP_PS_5V0_En" unused input active-high line 7: "EXP_HAT_DETECT" unused input active-high line 8: "GPIO_AUD_RSTn" unused input active-high line 9: "GPIO_eMMC_RSTn" unused input active-high line 10: "UART1_FET_BUF_EN" unused input active-high line 11: "WL_LT_EN" "regulator-6" output active-low [used] line 12: "GPIO_HDMI_RSTn" unused input active-high line 13: "CSI_GPIO1" unused input active-high line 14: "CSI_GPIO2" unused input active-high line 15: "PRU_3V3_EN" unused input active-high line 16: "HDMI_INTn" "interrupt" input active-high [used] line 17: "PD_I2C_IRQ" unused input active-high line 18: "MCASP1_FET_EN" unused input active-high line 19: "MCASP1_BUF_BT_EN" unused input active-high line 20: "MCASP1_FET_SEL" unused input active-high line 21: "UART1_FET_SEL" unused input active-high line 22: "TSINT#" "interrupt" input active-high [used] line 23: "IO_EXP_TEST_LED" unused input active-high
After executing it becomes
gpiochip3 - 24 lines: line 0: "GPIO_CPSW2_RST" unused input active-high line 1: "GPIO_CPSW1_RST" unused input active-high line 2: "PRU_DETECT" unused input active-high line 3: "MMC1_SD_EN" "regulator-3" output active-high [used] line 4: "VPP_LDO_EN" unused input active-high line 5: "EXP_PS_3V3_En" unused input active-high line 6: "EXP_PS_5V0_En" unused input active-high line 7: "EXP_HAT_DETECT" unused input active-high line 8: "GPIO_AUD_RSTn" unused input active-high line 9: "GPIO_eMMC_RSTn" unused input active-high line 10: "UART1_FET_BUF_EN" unused input active-high line 11: "WL_LT_EN" "regulator-6" output active-low [used] line 12: "GPIO_HDMI_RSTn" unused input active-high line 13: "CSI_GPIO1" unused input active-high line 14: "CSI_GPIO2" unused input active-high line 15: "PRU_3V3_EN" unused input active-high line 16: "HDMI_INTn" "interrupt" input active-high [used] line 17: "PD_I2C_IRQ" unused input active-high line 18: "MCASP1_FET_EN" unused input active-high line 19: "MCASP1_BUF_BT_EN" unused input active-high line 20: "MCASP1_FET_SEL" unused input active-high line 21: "UART1_FET_SEL" unused input active-high line 22: "TSINT#" unused input active-high line 23: "IO_EXP_TEST_LED" unused input active-high
i2c detect command shows our register 0x14
root@am62xx-evm:~# i2cdetect -r 0
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-0 using receive byte commands.
I will probe address range 0x08-0x77.
Continue? [Y/n]
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- UU -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: 30 -- -- -- -- -- -- -- 38 -- -- -- -- -- -- UU
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- 51 -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
In dmesg
[ 5.969149] Goodix-TS 0-0014: supply AVDD28 not found, using dummy regulator [ 5.977778] pwm-backlight backlight: supply power not found, using dummy regulator [ 5.994572] Goodix-TS 0-0014: supply VDDIO not found, using dummy regulator [ 6.015118] mc: Linux media interface: v0.10 [ 6.025851] Goodix-TS 0-0014: ID 911, version: 1050 [ 6.038763] Goodix-TS 0-0014: Invalid config (0, 0, 0), using defaults [ 6.047354] input: Goodix Capacitive TouchScreen as /devices/platform/bus@f0000/20000000.i2c/i2c-0/0-0014/input/input1
Can you help me in solving this?
