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dts: bcm2711: Don't mark timer regs unconfigured #6602

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merged 1 commit into from
Jan 10, 2025

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@pelwell pelwell commented Jan 10, 2025

The DT property arm,cpu-registers-not-fw-configured tells the kernel that the ARM architectural timer has not been configured by the firmware. This prevents the use of a vDSO - a faster alternative to a syscall for some common kernel operations.

However, on Pi 4 the firmware does configure the timer, so this property is unnecessary. Delete it.

Also remove it from the bcm2712.dtsi where it should never have been, since it is only relevant to 32-bit ARM kernels.

The DT property arm,cpu-registers-not-fw-configured tells the kernel
that the ARM architectural timer has not been configured by the
firmware. This prevents the use of a vDSO - a faster alternative to a
syscall for some common kernel operations.

However, on Pi 4 the firmware does configure the timer, so this property
is unnecessary. Delete it.

Also remove it from the bcm2712.dtsi where it should never have been,
since it is only relevant to 32-bit ARM kernels.

Signed-off-by: Phil Elwell <[email protected]>
@pelwell pelwell merged commit d06cb35 into raspberrypi:rpi-6.6.y Jan 10, 2025
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popcornmix added a commit to raspberrypi/firmware that referenced this pull request Jan 17, 2025
kernel: dts: bcm2711: Don't mark timer regs unconfigured
See: raspberrypi/linux#6602

kernel: mmc: bcm2835-sdhost Observe SWIOTLB memory limit
See: raspberrypi/linux#6603

kernel: drivers: media: pisp_be: Add support for YUV422 planar format
See: raspberrypi/linux#6613

kernel: drivers: media: pisp_be: Remove unused fields in struct pisp_be_config
See: raspberrypi/linux#6614
popcornmix added a commit to raspberrypi/rpi-firmware that referenced this pull request Jan 17, 2025
kernel: dts: bcm2711: Don't mark timer regs unconfigured
See: raspberrypi/linux#6602

kernel: mmc: bcm2835-sdhost Observe SWIOTLB memory limit
See: raspberrypi/linux#6603

kernel: drivers: media: pisp_be: Add support for YUV422 planar format
See: raspberrypi/linux#6613

kernel: drivers: media: pisp_be: Remove unused fields in struct pisp_be_config
See: raspberrypi/linux#6614
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2 participants