[PATCH] clk: bcm: rpi: Mark VEC clock as CLK_IGNORE_UNUSED

[Stephen Boyd]

Quoting Mark Brown (2026-04-24 08:34:52)
> From: Maíra Canal <mcanal at igalia.com>
> 
> On Raspberry Pi 3B, the VEC clock is used by the VideoCore firmware
> display driver, which remains active until the vc4 driver loads and
> sends NOTIFY_DISPLAY_DONE. If this clock is disabled during boot, a bus
> lockup happens and the firmware becomes unresponsive, causing a complete
> system lockup.
> 
> Mark the VEC clock with CLK_IGNORE_UNUSED so it survives the unused
> clock disablement and remains available until the vc4 driver takes over
> display management.
> 
> Fixes: 672299736af6 ("clk: bcm: rpi: Manage clock rate in prepare/unprepare callbacks")
> Reported-by: Mark Brown <broonie at kernel.org>
> Closes: https://lore.kernel.org/r/5f0bec08-f458-4fba-8bf3-06817a100c4c@sirena.org.uk
> Signed-off-by: Maíra Canal <mcanal at igalia.com>
> Link: https://patch.msgid.link/20260401111416.562279-2-mcanal@igalia.com
> Tested-by: Mark Brown <broonie at kernel.org>
> Signed-off-by: Mark Brown <broonie at kernel.org>
> ---

Applied to clk-fixes