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Advanced users • Re: MCP23017 overlay error -EIO: can't write IOCON 32

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my mcp23017 adddress 0x20 is connected with the Interrupt line to raspberrypizero pin 18 see attached picture.

I trid to monitor this pin via

Code:

sudo gpiomon gpiochip0 18

But never get any output .....Do I call this wrongly?




And also see this in dmesg

Code:

[   35.400849] gpio gpiochip1: (mcp23017): not an immutable chip, please consider fixing it![   35.412129] at24 11-0050: supply vcc not found, using dummy regulator[   35.456416] ------------[ cut here ]------------[   35.456448] WARNING: CPU: 0 PID: 404 at drivers/gpio/gpiolib.c:3367 gpiochip_enable_irq+0x98/0xc0[   35.456496] Modules linked in: at24(+) pinctrl_mcp23s08_i2c(+) pinctrl_mcp23s08 regmap_i2c hci_uart btbcm bluetooth ecdh_generic ecc libaes brcmfmac vc4 brcmutil snd_soc_hdmi_codec sha256_generic libsha256 8021q drm_display_helper garp stp cec llc drm_dma_helper cfg80211 drm_kms_helper snd_soc_core bcm2835_codec(C) snd_compress snd_pcm_dmaengine syscopyarea bcm2835_v4l2(C) sysfillrect sysimgblt raspberrypi_hwmon v4l2_mem2mem fb_sys_fops bcm2835_isp(C) bcm2835_mmal_vchiq(C) videobuf2_vmalloc videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_common rfkill snd_bcm2835(C) videodev snd_pcm i2c_bcm2835 snd_timer snd mc vc_sm_cma(C) i2c_gpio i2c_algo_bit uio_pdrv_genirq fixed uio drm i2c_dev fuse drm_panel_orientation_quirks backlight ip_tables x_tables ipv6[   35.456829] CPU: 0 PID: 404 Comm: modprobe Tainted: G         C         6.1.21+ #1642[   35.456848] Hardware name: BCM2835[   35.456867]  unwind_backtrace from show_stack+0x18/0x1c[   35.456902]  show_stack from dump_stack_lvl+0x34/0x58[   35.456931]  dump_stack_lvl from __warn+0x7c/0xf8[   35.456964]  __warn from warn_slowpath_fmt+0x60/0xcc[   35.457000]  warn_slowpath_fmt from gpiochip_enable_irq+0x98/0xc0[   35.457030]  gpiochip_enable_irq from bcm2835_gpio_irq_unmask+0x38/0x98[   35.457054]  bcm2835_gpio_irq_unmask from unmask_irq.part.8+0x28/0x3c[   35.457088]  unmask_irq.part.8 from irq_startup+0xbc/0xf4[   35.457115]  irq_startup from __setup_irq+0x6b0/0x7b0[   35.457140]  __setup_irq from request_threaded_irq+0xe0/0x164[   35.457164]  request_threaded_irq from devm_request_threaded_irq+0x6c/0xc8[   35.457192]  devm_request_threaded_irq from mcp23s08_probe_one+0x310/0x46c [pinctrl_mcp23s08][   35.457284]  mcp23s08_probe_one [pinctrl_mcp23s08] from mcp230xx_probe+0xe4/0x14c [pinctrl_mcp23s08_i2c][   35.457361]  mcp230xx_probe [pinctrl_mcp23s08_i2c] from i2c_device_probe+0x284/0x2a4[   35.457407]  i2c_device_probe from really_probe+0xcc/0x2b8[   35.457430]  really_probe from __driver_probe_device+0x88/0xec[   35.457448]  __driver_probe_device from driver_probe_device+0x34/0xcc[   35.457466]  driver_probe_device from __driver_attach+0x74/0x108[   35.457486]  __driver_attach from bus_for_each_dev+0x78/0xbc[   35.457521]  bus_for_each_dev from bus_add_driver+0x184/0x1e8[   35.457553]  bus_add_driver from driver_register+0x7c/0x114[   35.457578]  driver_register from i2c_register_driver+0x40/0x90[   35.457598]  i2c_register_driver from do_one_initcall+0x3c/0x1bc[   35.457626]  do_one_initcall from do_init_module+0x48/0x1fc[   35.457651]  do_init_module from load_module+0x1a90/0x1d04[   35.457670]  load_module from sys_init_module+0x164/0x194[   35.457689]  sys_init_module from __sys_trace_return+0x0/0x10[   35.457708] Exception stack(0xdd8c1fa8 to 0xdd8c1ff0)[   35.457727] 1fa0:                   0002fa2c 01b67b70 01b67b70 00002150 0002de04 00000000[   35.457744] 1fc0: 0002fa2c 01b67b70 00040000 00000080 01b57660 00000000 00000000 01b57448[   35.457757] 1fe0: 00040e0c be8bf970 00023c04 b6ca3110[   35.457767] ---[ end trace 0000000000000000 ]---[   35.463018] gpio gpiochip2: (mcp23017): not an immutable chip, please consider fixing it!
sorry to say, but post your full log via 'raspinfo | pastebinit'

Statistics: Posted by aBUGSworstnightmare — Tue Dec 17, 2024 5:59 pm



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