linux-stable.git/drivers/clocksource, branch v6.6.2

clocksource/drivers/arm_arch_timer: limit XGene-1 workaround

2023-11-20T10:59:12+00:00

[ Upstream commit 851354cbd12bb9500909733c3d4054306f61df87 ]

The AppliedMicro XGene-1 CPU has an erratum where the timer condition
would only consider TVAL, not CVAL. We currently apply a workaround when
seeing the PartNum field of MIDR_EL1 being 0x000, under the assumption
that this would match only the XGene-1 CPU model.
However even the Ampere eMAG (aka XGene-3) uses that same part number, and
only differs in the "Variant" and "Revision" fields: XGene-1's MIDR is
0x500f0000, our eMAG reports 0x503f0002. Experiments show the latter
doesn't show the faulty behaviour.

Increase the specificity of the check to only consider partnum 0x000 and
variant 0x00, to exclude the Ampere eMAG.

Fixes: 012f18850452 ("clocksource/drivers/arm_arch_timer: Work around broken CVAL implementations")
Reported-by: Ross Burton 
Signed-off-by: Andre Przywara 
Acked-by: Marc Zyngier 
Reviewed-by: Oliver Upton 
Link: https://lore.kernel.org/r/20231016153127.116101-1-andre.przywara@arm.com
Signed-off-by: Catalin Marinas 
Signed-off-by: Sasha Levin

drivers/clocksource/timer-ti-dm: Don't call clk_get_rate() in stop function

2023-11-20T10:58:53+00:00

[ Upstream commit 12590d4d0e331d3cb9e6b3494515cd61c8a6624e ]

clk_get_rate() might sleep, and that prevents dm-timer based PWM from being
used from atomic context.

Fix that by getting fclk rate in probe() and using a notifier in case rate
changes.

Fixes: af04aa856e93 ("ARM: OMAP: Move dmtimer driver out of plat-omap to drivers under clocksource")
Signed-off-by: Ivaylo Dimitrov 
Reviewed-by: Tony Lindgren 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/1696312220-11550-1-git-send-email-ivo.g.dimitrov.75@gmail.com
Signed-off-by: Sasha Levin

Merge tag 'timers-core-2023-09-04-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-09-04T20:15:57+00:00

Pull clocksource/clockevent driver updates from Thomas Gleixner:

 - Remove the OXNAS driver instead of adding a new one!

 - A set of boring fixes, cleanups and improvements

* tag 'timers-core-2023-09-04-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: Explicitly include correct DT includes
  clocksource/drivers/sun5i: Convert to platform device driver
  clocksource/drivers/sun5i: Remove pointless struct
  clocksource/drivers/sun5i: Remove duplication of code and data
  clocksource/drivers/loongson1: Set variable ls1x_timer_lock storage-class-specifier to static
  clocksource/drivers/arm_arch_timer: Disable timer before programming CVAL
  dt-bindings: timer: oxsemi,rps-timer: remove obsolete bindings
  clocksource/drivers/timer-oxnas-rps: Remove obsolete timer driver

Merge tag 'hyperv-next-signed-20230902' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

2023-09-04T18:26:29+00:00

Pull hyperv updates from Wei Liu:

 - Support for SEV-SNP guests on Hyper-V (Tianyu Lan)

 - Support for TDX guests on Hyper-V (Dexuan Cui)

 - Use SBRM API in Hyper-V balloon driver (Mitchell Levy)

 - Avoid dereferencing ACPI root object handle in VMBus driver (Maciej
   Szmigiero)

 - A few misecllaneous fixes (Jiapeng Chong, Nathan Chancellor, Saurabh
   Sengar)

* tag 'hyperv-next-signed-20230902' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (24 commits)
  x86/hyperv: Remove duplicate include
  x86/hyperv: Move the code in ivm.c around to avoid unnecessary ifdef's
  x86/hyperv: Remove hv_isolation_type_en_snp
  x86/hyperv: Use TDX GHCI to access some MSRs in a TDX VM with the paravisor
  Drivers: hv: vmbus: Bring the post_msg_page back for TDX VMs with the paravisor
  x86/hyperv: Introduce a global variable hyperv_paravisor_present
  Drivers: hv: vmbus: Support >64 VPs for a fully enlightened TDX/SNP VM
  x86/hyperv: Fix serial console interrupts for fully enlightened TDX guests
  Drivers: hv: vmbus: Support fully enlightened TDX guests
  x86/hyperv: Support hypercalls for fully enlightened TDX guests
  x86/hyperv: Add hv_isolation_type_tdx() to detect TDX guests
  x86/hyperv: Fix undefined reference to isolation_type_en_snp without CONFIG_HYPERV
  x86/hyperv: Add missing 'inline' to hv_snp_boot_ap() stub
  hv: hyperv.h: Replace one-element array with flexible-array member
  Drivers: hv: vmbus: Don't dereference ACPI root object handle
  x86/hyperv: Add hyperv-specific handling for VMMCALL under SEV-ES
  x86/hyperv: Add smp support for SEV-SNP guest
  clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest
  x86/hyperv: Use vmmcall to implement Hyper-V hypercall in sev-snp enlightened guest
  drivers: hv: Mark percpu hvcall input arg page unencrypted in SEV-SNP enlightened guest
  ...

clocksource: Explicitly include correct DT includes

2023-08-28T18:30:57+00:00

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it was merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Link: https://lore.kernel.org/r/20230714174409.4053843-1-robh@kernel.org
Signed-off-by: Rob Herring

clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest

2023-08-22T00:38:20+00:00

Hyper-V tsc page is shared with hypervisor and mark the page
unencrypted in sev-snp enlightened guest when it's used.

Reviewed-by: Dexuan Cui 
Reviewed-by: Michael Kelley 
Signed-off-by: Tianyu Lan 
Signed-off-by: Wei Liu 
Link: https://lore.kernel.org/r/20230818102919.1318039-7-ltykernel@gmail.com

clocksource: Explicitly include correct DT includes

2023-08-18T10:16:01+00:00

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20230714174409.4053843-1-robh@kernel.org

clocksource/drivers/sun5i: Convert to platform device driver

2023-08-18T10:15:22+00:00

Convert the sun5i hstimer driver to a platform device driver.
This makes it work again on A20 and other systems where the
clock is provided by a platform device driver.

Fixes: 7ec03b588d22 ("clk: sunxi-ng: Convert early providers to platform drivers")
Signed-off-by: Mans Rullgard 
Acked-by: Jernej Skrabec 
Acked-by: Maxime Ripard 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20230630201800.16501-4-mans@mansr.com

clocksource/drivers/sun5i: Remove pointless struct

2023-08-18T10:15:13+00:00

Remove the pointless struct added in the previous patch to make
the diff smaller.

Signed-off-by: Mans Rullgard 
Acked-by: Jernej Skrabec 
Acked-by: Maxime Ripard 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20230630201800.16501-3-mans@mansr.com

clocksource/drivers/sun5i: Remove duplication of code and data

2023-08-18T10:15:06+00:00

Move the clocksource and clock_event_device structs into the main
struct sun5i_timer, and update the code for the new layout.  This
removes a lot of duplication of both code and data.

Signed-off-by: Mans Rullgard 
Acked-by: Jernej Skrabec 
Acked-by: Maxime Ripard 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20230630201800.16501-2-mans@mansr.com