Hi Nicolas, On Wed, May 6, 2020 at 12:26 AM Nicolas Saenz Julienne <nsaenzjulie...@suse.de> wrote: > > On the Raspberry Pi 4, after a PCI reset, VL805's (a xHCI chip) firmware > may either be loaded directly from an EEPROM or, if not present, by the > SoC's VideCore (the SoC's co-processor). Introduce the function that > informs VideCore that VL805 may need its firmware loaded. >
I still did not get it. Without the firmware being loaded, does xHCI on RPi 4 still work? What exact functionality does the firmware provide? > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulie...@suse.de> > > --- > Changes since v2: > - Correct wrong function name in comment > - Add better comment on rpi_firmware_init_vl805() > > Changes since v1: > - Rename function so it's not mistaken with regular firmware loading > > arch/arm/mach-bcm283x/include/mach/mbox.h | 13 +++++++ > arch/arm/mach-bcm283x/include/mach/msg.h | 7 ++++ > arch/arm/mach-bcm283x/msg.c | 45 +++++++++++++++++++++++ > 3 files changed, 65 insertions(+) > Regards, Bin
