[PATCH] ARM: dts: broadcom: rpi: Switch to V3D firmware clock

Tue Oct 21 05:09:43 PDT 2025

On Sun, Oct 05, 2025 at 01:38:16PM +0200, Stefan Wahren wrote:
> Until commit 919d6924ae9b ("clk: bcm: rpi: Turn firmware clock on/off
> when preparing/unpreparing") the clk-raspberrypi driver wasn't able
> to change the state of the V3D clock. Only the clk-bcm2835 was able
> to do this before. After this commit both drivers were able to work
> against each other, which could result in a system freeze. One step
> to avoid this conflict is to switch all V3D consumer to the firmware
> clock.

I'm seeing the GPU start to fail probing on the Raspberry Pi 4 in
today's pending-fixes:

# # v3d fec00000.gpu: probe with driver v3d failed with error -110
# not ok 1 +platform:fec00000.gpu 

which bisects to this commit.  I'm not sure if that's just a preexisting
issue which is now being properly detected or if it's an actual issue,
I'm not testing the GPU at all so I couldn't tell you if it was actually
working.

Full log:

   https://lava.sirena.org.uk/scheduler/job/1981716#L9006

Bisect:

# bad: [b1c99eb0279a6d2aa32fdf6b3f2b35ab05f41d9d] Merge branch 'for-linux-next-fixes' of https://gitlab.freedesktop.org/drm/misc/kernel.git
# good: [6548d364a3e850326831799d7e3ea2d7bb97ba08] Merge tag 'cgroup-for-6.18-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
# good: [8735696acea24ac1f9d4490992418c71941ca68c] spi: cadence-quadspi: Fix pm_runtime unbalance on dma EPROBE_DEFER
# good: [6b6e03106163458716c47df2baa9ad08ed4ddb0e] spi: amlogic: fix spifc build error
# good: [0b7d9b25e4bc2e478c9d06281a65f930769fca09] spi: airoha: fix reading/writing of flashes with more than one plane per lun
# good: [b508de5211652c439419cda7840feb3f22f75cd6] Merge tag 'scmi-fixes-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
# good: [03667191cbeb1a23c444c88b7c058dcbf2dd03f1] Merge tag 'ffa-fix-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
# good: [f43579ef3500527649b1c233be7cf633806353aa] spi: spi-nxp-fspi: limit the clock rate for different sample clock source selection
# good: [ee795e82e10197c070efd380dc9615c73dffad6c] spi: rockchip-sfc: Fix DMA-API usage
# good: [4092fc5f35cecb01d59b2cdf7740b203eac6948a] spi: dt-bindings: cadence: add soc-specific compatible strings for zynqmp and versal-net
# good: [18a5f1af596e6ba22cd40ada449063041f3ce6d4] spi: dw-mmio: add error handling for reset_control_deassert()
git bisect start 'b1c99eb0279a6d2aa32fdf6b3f2b35ab05f41d9d' '6548d364a3e850326831799d7e3ea2d7bb97ba08' '8735696acea24ac1f9d4490992418c71941ca68c' '6b6e03106163458716c47df2baa9ad08ed4ddb0e' '0b7d9b25e4bc2e478c9d06281a65f930769fca09' 'b508de5211652c439419cda7840feb3f22f75cd6' '03667191cbeb1a23c444c88b7c058dcbf2dd03f1' 'f43579ef3500527649b1c233be7cf633806353aa' 'ee795e82e10197c070efd380dc9615c73dffad6c' '4092fc5f35cecb01d59b2cdf7740b203eac6948a' '18a5f1af596e6ba22cd40ada449063041f3ce6d4'
# test job: [8735696acea24ac1f9d4490992418c71941ca68c] https://lava.sirena.org.uk/scheduler/job/1948358
# test job: [6b6e03106163458716c47df2baa9ad08ed4ddb0e] https://lava.sirena.org.uk/scheduler/job/1959348
# test job: [0b7d9b25e4bc2e478c9d06281a65f930769fca09] https://lava.sirena.org.uk/scheduler/job/1962113
# test job: [b508de5211652c439419cda7840feb3f22f75cd6] https://lava.sirena.org.uk/scheduler/job/1981616
# test job: [03667191cbeb1a23c444c88b7c058dcbf2dd03f1] https://lava.sirena.org.uk/scheduler/job/1980576
# test job: [f43579ef3500527649b1c233be7cf633806353aa] https://lava.sirena.org.uk/scheduler/job/1948241
# test job: [ee795e82e10197c070efd380dc9615c73dffad6c] https://lava.sirena.org.uk/scheduler/job/1927696
# test job: [4092fc5f35cecb01d59b2cdf7740b203eac6948a] https://lava.sirena.org.uk/scheduler/job/1911635
# test job: [18a5f1af596e6ba22cd40ada449063041f3ce6d4] https://lava.sirena.org.uk/scheduler/job/1930414
# test job: [b1c99eb0279a6d2aa32fdf6b3f2b35ab05f41d9d] https://lava.sirena.org.uk/scheduler/job/1981716
# bad: [b1c99eb0279a6d2aa32fdf6b3f2b35ab05f41d9d] Merge branch 'for-linux-next-fixes' of https://gitlab.freedesktop.org/drm/misc/kernel.git
git bisect bad b1c99eb0279a6d2aa32fdf6b3f2b35ab05f41d9d
# test job: [2878351f8275c49fc809cbf6490a4a2e05cd360d] https://lava.sirena.org.uk/scheduler/job/1982267
# bad: [2878351f8275c49fc809cbf6490a4a2e05cd360d] Merge branch 'driver-core-linus' of https://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core.git
git bisect bad 2878351f8275c49fc809cbf6490a4a2e05cd360d
# test job: [ea6aa8d2fbbba24d4f0732596fc716800eb4e3f6] https://lava.sirena.org.uk/scheduler/job/1982733
# bad: [ea6aa8d2fbbba24d4f0732596fc716800eb4e3f6] Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git
git bisect bad ea6aa8d2fbbba24d4f0732596fc716800eb4e3f6
# test job: [40efeb7008e820c09532760b0aa07f327a5eaa4f] https://lava.sirena.org.uk/scheduler/job/1983168
# bad: [40efeb7008e820c09532760b0aa07f327a5eaa4f] Merge branch 'arm/fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git
git bisect bad 40efeb7008e820c09532760b0aa07f327a5eaa4f
# test job: [70b154f7b68ac0df0abdc242462856ef58cd50a3] https://lava.sirena.org.uk/scheduler/job/1983459
# good: [70b154f7b68ac0df0abdc242462856ef58cd50a3] Merge branch 'mm-hotfixes-unstable' of https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
git bisect good 70b154f7b68ac0df0abdc242462856ef58cd50a3
# test job: [bc16536fee96bae9ed573dfcc6d455775682f041] https://lava.sirena.org.uk/scheduler/job/1983942
# good: [bc16536fee96bae9ed573dfcc6d455775682f041] Merge branch 'fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
git bisect good bc16536fee96bae9ed573dfcc6d455775682f041
# test job: [2f3471cc5d4179811a2c15675ea278d348d30d73] https://lava.sirena.org.uk/scheduler/job/1984071
# bad: [2f3471cc5d4179811a2c15675ea278d348d30d73] Merge tag 'arm-soc/for-6.18/devicetree-arm64-fixes' of https://github.com/Broadcom/stblinux into arm/fixes
git bisect bad 2f3471cc5d4179811a2c15675ea278d348d30d73
# test job: [d2dc8a386a906bc120fda82207e291244e73d292] https://lava.sirena.org.uk/scheduler/job/1984278
# bad: [d2dc8a386a906bc120fda82207e291244e73d292] Merge tag 'arm-soc/for-6.18/devicetree-fixes' of https://github.com/Broadcom/stblinux into arm/fixes
git bisect bad d2dc8a386a906bc120fda82207e291244e73d292
# test job: [4adc20ba95d472a919f54d441663924e33c92279] https://lava.sirena.org.uk/scheduler/job/1984408
# bad: [4adc20ba95d472a919f54d441663924e33c92279] ARM: dts: broadcom: rpi: Switch to V3D firmware clock
git bisect bad 4adc20ba95d472a919f54d441663924e33c92279
# first bad commit: [4adc20ba95d472a919f54d441663924e33c92279] ARM: dts: broadcom: rpi: Switch to V3D firmware clock
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20251021/eb908fdc/attachment.sig>