giseleznev 0 Posted June 18 hi everyone I think I'm doing smth wrong with my tinker board 2 I've turned on all i2c overlays and connected i2c device to pins 3,5, double checked wires i2cdetect can't detect any device, prints empty bus, but device is connected What am I missing ? Share this post Link to post Share on other sites
tooz 28 Posted June 19 hello @giseleznev, what's the config.txt that you modified and what's the i2c device you connected to? Share this post Link to post Share on other sites
giseleznev 0 Posted June 19 (edited) Device is si5351chip I've just changed #intf:i2c6=off to intf:i2c6=on from the default, i do have 6-th here: ls /dev/i2c* but i get empty line from sudo i2cdetect -y 6 Edited June 19 by giseleznev Share this post Link to post Share on other sites
tooz 28 Posted June 19 hello @giseleznev, 1. have you made a reboot after saving the config.txt? 2. what's the result of this command? 2 hours ago, giseleznev said: ls /dev/i2c* 3. by empty, does it mean that only slave address is shown but the device is not found? 2 hours ago, giseleznev said: sudo i2cdetect -y 6 Share this post Link to post Share on other sites
giseleznev 0 Posted June 19 Yes, I did reboot empty mean all printed addresses are "_" Share this post Link to post Share on other sites
giseleznev 0 Posted June 19 @tooz By the way, here is my dmesg with some errors. What does it mean ? linaro@linaro-alip:~$ dmesg | grep i2c [ 1.865109] i2c /dev entries driver [ 1.869490] of_get_named_gpiod_flags: parsed 'vsel-gpios' property of node '/i2c@ff3c0000/fan53200@60[0]' - status (0) [ 1.883092] rk3x-i2c ff3c0000.i2c: Initialized RK3xxx I2C bus at ffffff8009858000 [ 1.891296] rk3x-i2c ff110000.i2c: Initialized RK3xxx I2C bus at ffffff800985a000 [ 1.899201] rk3x-i2c ff120000.i2c: Initialized RK3xxx I2C bus at ffffff800985c000 [ 1.907105] rk3x-i2c ff150000.i2c: Initialized RK3xxx I2C bus at ffffff800985e000 [ 1.915409] of_get_named_gpiod_flags: parsed 'vsel-gpios' property of node '/i2c@ff3d0000/fan53200@60[0]' - status (0) [ 1.928973] rk3x-i2c ff3d0000.i2c: Initialized RK3xxx I2C bus at ffffff8009860000 [ 1.937317] rk3x-i2c ff3e0000.i2c: Initialized RK3xxx I2C bus at ffffff8009862000 [ 1.964363] tinker-mcu: tinker_mcu_probe: i2c_id= 0x8 [ 2.027682] tinker-mcu: tinker_mcu_ili9881c_probe: i2c_id= 0x8 [ 2.210914] of_get_named_gpiod_flags: can't parse 'dvs-gpios' property of node '/i2c@ff3c0000/pmic@1b[0]' [ 2.210925] of_get_named_gpiod_flags: can't parse 'dvs-gpio' property of node '/i2c@ff3c0000/pmic@1b[0]' [ 2.217168] of_get_named_gpiod_flags: can't parse 'dvs-gpios' property of node '/i2c@ff3c0000/pmic@1b[1]' [ 2.217179] of_get_named_gpiod_flags: can't parse 'dvs-gpio' property of node '/i2c@ff3c0000/pmic@1b[1]' [ 2.295962] of_get_named_gpiod_flags: parsed 'int-n-gpios' property of node '/i2c@ff3d0000/fusb30x@22[0]' - status (0) [ 2.296029] of_get_named_gpiod_flags: parsed 'vbus-5v-gpios' property of node '/i2c@ff3d0000/fusb30x@22[0]' - status (0) [ 2.296073] of_get_named_gpiod_flags: can't parse 'vbus-other-gpios' property of node '/i2c@ff3d0000/fusb30x@22[0]' [ 2.296083] of_get_named_gpiod_flags: can't parse 'vbus-other-gpio' property of node '/i2c@ff3d0000/fusb30x@22[0]' [ 2.296128] of_get_named_gpiod_flags: can't parse 'discharge-gpios' property of node '/i2c@ff3d0000/fusb30x@22[0]' [ 2.296138] of_get_named_gpiod_flags: can't parse 'discharge-gpio' property of node '/i2c@ff3d0000/fusb30x@22[0]' [ 2.315813] input: Typec_Headphone as /devices/platform/ff3d0000.i2c/i2c-4/4-0022/input/input0 [ 3.141361] of_get_named_gpiod_flags: parsed 'irq_gpio_number' property of node '/i2c@ff110000/gsl3673@40[0]' - status (0) [ 3.141394] of_get_named_gpiod_flags: parsed 'rst_gpio_number' property of node '/i2c@ff110000/gsl3673@40[0]' - status (0) [ 3.141697] input: gsl3673 as /devices/platform/ff110000.i2c/i2c-1/1-0040/input/input1 [ 3.197419] gsl3673 1-0040: GSL3673 test_i2c error! [ 3.780928] of_get_named_gpiod_flags: parsed 'enable-gpios' property of node '/i2c@ff110000/imx219@10[0]' - status (0) [ 4.654953] i2c i2c-9: of_i2c: modalias failure on /hdmi@ff940000/ports [ 4.692103] i2c i2c-10: of_i2c: modalias failure on /dp@fec00000/ports Share this post Link to post Share on other sites
giseleznev 0 Posted June 19 (edited) full is here: https://pastebin.com/5x8aYSjk Edited June 19 by giseleznev Share this post Link to post Share on other sites
tooz 28 Posted June 20 hello @giseleznev, i didn't see anything that relates to i2c-6 from your dmesg result. have you used 1. another device and see if the 40 pin header works? 2. check the hardware signal? i don't have the a si5351 so i use a rtc for testing, vcc3.3v=pin1, sda=pin3, scl=pin5, gnd=pin9 sudo vim /boot/config.txt intf:i2c6=on save and reboot sudo i2cdetect -y 6 Share this post Link to post Share on other sites
