For clarity, SSD connected over PCIe (ie NVMe), or SSD connected over USB?Hardware: CM4 4GB Lite/Raspberry pi CM4 IO Board
Fan: Waveshare Dedicated 3007 Cooling Fan for Raspberry Pi Compute Module CM4
OS: Bookworm Desktop 64 bit
Kernel: Linux raspberrypi 6.6.20+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.6.20-1+rpt1 (2024-03-07) aarch64 GNU/Linux
Bootloader:I am presently booting up from a SSD and have encountered the issue described below.Code:
2024/04/17 13:51:36version 0b7b6f28b0a25311e6d75518aec0e29ecfb36ec0 (release)timestamp 1713358296update-time 1713999287capabilities 0x0000007f
Check /sys/kernel/debug/devices_deferred for any reason that the driver has delayed loading.However, if I bootup from a microSD card with the same OS and Kernel, I am able to see the 0x2f hex address when I run i2cdetect -y 10, so the issue is strictly with the OS on the SSD.
The dtoverlay=i2c-fan,emc2301,i2c_csi_dsi fails to function after bootup and the fan goes to full speed.
The dtoverlay i2c-fan enables i2c_vc at startup and there is i2c-0, i2c-1, and i2c-10 in the /dev directory.
Running sudo i2cdetect -y 0, i2cdetect -y 1, or i2cdetect -y 10 results in no 0x2f hex address at line 20:
Additionally running dmesg | grep emc or lsmod | grep emc results in the following:Code:
tciii@raspberrypi:~ $ dmesg | grep emctciii@raspberrypi:~ $However, raspinfo:Code:
lsmod | grep emcemc2305 12288 0But:Code:
006352.447: Loaded overlay 'i2c-fan'006352.467: dtparam: emc2301=true006355.273: dtparam: i2c_csi_dsi=trueCode:
tciii@raspberrypi:~ $ ls -l /sys/class/hwmon/total 0lrwxrwxrwx 1 root root 0 Dec 31 1969 hwmon0 -> ../../devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/nvme/nvme0/hwmon0lrwxrwxrwx 1 root root 0 Dec 31 1969 hwmon1 -> ../../devices/virtual/thermal/thermal_zone0/hwmon1lrwxrwxrwx 1 root root 0 Apr 25 15:23 hwmon2 -> ../../devices/platform/soc/soc:firmware/raspberrypi-hwmon/hwmon/hwmon2
Although if address 0x2f isn't responding then it should abort probe anyway.
Do any of the other addresses respond on i2c-10? IIRC the RTC is 0x51, and will typically trigger 0x0c as well. Any camera on CAM1 or display on DISP1 will also be reported on that bus.
https://github.com/raspberrypi/linux/bl ... 2035-L2077I have checked the /boot/overlays/ directory and there is a i2c-fan.dtbo file, however there is no i2c_fan descriptor in the README file.
Statistics: Posted by 6by9 — Fri Apr 26, 2024 7:05 am