Hi,There is a problem with the SPI driver on Pi5.
It gets triggered when the Pi is busy (specifically sdram bandwidth is saturated).
It results in "spi_master spi0: RX FIFO overflow detected" which is not recoverable without a reboot.
The issues does not affect Pi0-4. There is no current fix for Pi5.
I wonder if I am suffering with this. I have a Pi5 and a TV HAT. I have been finding that the TV HAT works nicely for a while, then may vanish (the input disappears from tvheadend). If I reboot, then my kernel messages show nothing at all containing 'cxd2880' or 'spi' - it's as if the TV HAT doesn't exist. If I totally power down, then power back up, then my kernel messages show:
richard@raspberrypi:~ $ dmesg | grep cxd
[ 5.644582] cxd2880: cxd2880_attach: CXD2880 driver version: Ver 1.4.1 - 1.0.5
[ 5.644591] cxd2880 spi0.0: DVB: registering adapter 0 frontend 0 (Sony CXD2880)...
[ 5.645195] cxd2880_spi: cxd2880_spi_probe: Sony CXD2880 has successfully attached.
[ 7.590045] cxd2880 spi0.0: DVB: adapter 0 frontend 0 frequency 0 out of range (174000000..862000000)
[ 24.940126] cxd2880: cxd2880_set_frontend: sys:16 freq:474000000 bw:8
[ 25.968053] cxd2880: cxd2880_set_frontend: tune result 0
richard@raspberrypi:~ $ uname -a
Linux raspberrypi 6.6.31+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.6.31-1+rpt1 (2024-05-29) aarch64 GNU/Linux
so although I'm not seeing any 'RC FIFO overflow' messages at the moment, I wonder if this is the same problem.
Is there anything tracking this which I can keep an eye on, maybe via GitHub issues?
Cheers,
Richard.
Statistics: Posted by Rich 6502 — Mon Jul 08, 2024 10:50 am