raspberrypi/rpi-eeprom
1
0
Fork 0
mirror of https://github.com/raspberrypi/rpi-eeprom.git synced 2026-01-20 21:13:36 +08:00
Code Issues Packages Projects Releases Wiki Activity

pieeprom-2024-12-19: 2712: Disable PWM fan at shutdown (POWER_OFF_ON_HALT=0) (latest)

Browse Source 
* Disable fan PWM before shutdown
  Drive the RP1 fan PWM GPIO high before entering the VPU
  sleep (POWER_OFF_ON_HALT=0) to stop the fan spinning.
* Disable fan PWM GPIO between RP1 init and fan probe
  Drive fan PWM GPIO high during early boot to disable the fan
  until it is probed during the device-tree setup stage.
  This stops the spinning at max rpm during network-install.
* arm_dt: enable_uart defaults to 0 on 2712
  The default value of enable_uart on 2712 is 0, regardless of the
  presence of the debug UART cable, so guarantee that the default is
  always set correctly.
This commit is contained in:
Tim Gover
2024-12-19 12:03:39 +00:00
committed by timg236
parent 4ba7cedf18
commit f02f0eaf4e
3 changed files with 14 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

BIN
firmware-2712/latest/pieeprom-2024-12-19.bin Normal file
View File

Binary file not shown.

BIN
firmware-2712/latest/recovery.bin
View File

Binary file not shown.

14
firmware-2712/release-notes.md
View File

@@ -1,5 +1,19 @@
# Raspberry Pi5 bootloader EEPROM release notes # Raspberry Pi5 bootloader EEPROM release notes
## 2024-12-19: Disable fan PWM before shutdown (latest)
* Disable fan PWM before shutdown
Drive the RP1 fan PWM GPIO high before entering the VPU
sleep (POWER_OFF_ON_HALT=0) to stop the fan spinning.
* Disable fan PWM GPIO between RP1 init and fan probe
Drive fan PWM GPIO high during early boot to disable the fan
until it is probed during the device-tree setup stage.
This stops the spinning at max rpm during network-install.
* arm_dt: enable_uart defaults to 0 on 2712
The default value of enable_uart on 2712 is 0, regardless of the
presence of the debug UART cable, so guarantee that the default is
always set correctly.
## 2024-12-15: Add net install to boot menu (latest) ## 2024-12-15: Add net install to boot menu (latest)
* Add net install to boot menu * Add net install to boot menu