1. 12 Aug, 2022 1 commit
    • Ariel D'Alessandro's avatar
      Disable several hardware blocks to reduce power consumption · 15eb26f2
      Ariel D'Alessandro authored
      Looks like RPi4 board is becoming unstable because of a voltage drop.
      When that happens, it usually outputs garbage to the debug console and
      hwmon reports undervoltage.
      
      E.g. https://lava.collabora.dev/scheduler/job/7025990#L854
      
      :
      
        pppppppp����p���p��|��p�������p�p���|����p��|�|���|`?�p�|���c�p�|��|`�p�p�p�|pppp��|��p�|c��pp��|��p�p��p?��p�|�Ό���|���pc�����p�pp�|�c�p�|pp�p�cppp����p������p��|��p�p?��p��p�|「������p�|�|p`������p��|��p�|�c?�p�|��|�>�pp�p�cp��|��p�|c��p����p�������|pp����������|�|p`�����pc>�|`�p�|�c�p�|��|`�pp�p�cpp��|��p�|c��p������`��p`���p�������p��|��p�p?��p?��p�|��|���p��|psp�|�c�p�|��|`�pp�p�cpp������`��?p`���p�������p��|��p�p��p��p�|cΌ�|���p��c��|���p��|���������|�|`�p�|�c�p�|��|`�p�p�p�|ppppp`���p�|p�p��p��p�|����`㌀�π|p�p�|��p�?�����||cppppppppp����p���p��|���|p�p��p?��p�|c������pp���|c��p���������|p�Ό�|c����|p�p������|��|`�p�|���c�p�|��|`�p�p�p�|ppppp|��p��|c8��`��?p��|��p�p?��p��p�|c��pc����p��p���|c��pp�|�c�p��1�`����p��p��p�pc���>������p�|c�π|p`�����pc>�|�p|�p�>c�π|p�[   20.572648] hwmon hwmon0: Undervoltage detected!
        [   22.588648] hwmon hwmon0: Voltage normalised
      
      For these tests, let's disable most peripherals to reduce the power
      consumption. Board should boot fine.
      
      Signed-off-by: Ariel D'Alessandro's avatarAriel D'Alessandro <ariel.dalessandro@collabora.com>
      15eb26f2
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