MAX77620 0x00

gistfile1.txt

[    4.721309] I2C XFER: device = max77620, flags = 0x00, data = [0x00, 0xff, ]
[    4.728382] CPU: 2 PID: 1 Comm: swapper/0 Not tainted 4.17.0-00059-g87bd3c37c1cd-dirty #16
[    4.736641] Hardware name: Nintendo Switch (DT)
[    4.741165] Call trace:
[    4.743614]  dump_backtrace+0x0/0x1b0
[    4.747274]  show_stack+0x14/0x20
[    4.750589]  dump_stack+0x9c/0xbc
[    4.753903]  i2c_transfer_buffer_flags+0x120/0x178
[    4.758691]  regmap_i2c_write+0x1c/0x50
[    4.762526]  _regmap_raw_write_impl+0x5f4/0x750
[    4.767053]  _regmap_bus_raw_write+0x60/0x78
[    4.771321]  _regmap_write+0x58/0xa8
[    4.774893]  _regmap_update_bits+0xf0/0x108
[    4.779073]  regmap_update_bits_base+0x60/0x90
[    4.783513]  regmap_irq_update_bits.isra.1+0x44/0x50
[    4.788472]  regmap_add_irq_chip+0x4c4/0x8a8
[    4.792739]  devm_regmap_add_irq_chip+0x8c/0x100
[    4.797354]  max77620_gpio_probe+0x10c/0x1a8
[    4.801620]  platform_drv_probe+0x58/0xb8
[    4.805628]  driver_probe_device+0x298/0x468
[    4.809895]  __device_attach_driver+0x88/0x140
[    4.814335]  bus_for_each_drv+0x78/0xc8
[    4.818168]  __device_attach+0xd4/0x150
[    4.822001]  device_initial_probe+0x10/0x18
[    4.826180]  bus_probe_device+0x90/0x98
[    4.830012]  device_add+0x3ec/0x5f8
[    4.833497]  platform_device_add+0x110/0x278
[    4.837766]  mfd_add_device+0x2a8/0x2f8
[    4.841598]  mfd_add_devices+0xac/0x148
[    4.845431]  devm_mfd_add_devices+0x78/0xd8
[    4.849610]  max77620_probe+0x49c/0x6d8
[    4.853444]  i2c_device_probe+0x264/0x2c8
[    4.857450]  driver_probe_device+0x298/0x468
[    4.861717]  __driver_attach+0x114/0x118
[    4.865637]  bus_for_each_dev+0x70/0xc0
[    4.869469]  driver_attach+0x20/0x28
[    4.873042]  bus_add_driver+0x248/0x278
[    4.876872]  driver_register+0x60/0xf8
[    4.880617]  i2c_register_driver+0x44/0xa0
[    4.884713]  max77620_driver_init+0x18/0x20
[    4.888891]  do_one_initcall+0x70/0x144
[    4.892724]  kernel_init_freeable+0x180/0x21c
[    4.897078]  kernel_init+0x10/0x104
[    4.900565]  ret_from_fork+0x10/0x18