Drew Fustini 97e3aaace4 clocksource/drivers/timer-ti-dm: Fix regression from errata i940 fix ... [ Upstream commit bceaae3bac ] The existing fix for errata i940 causes a conflict for IPU2 which is using timer 3 and 4. From arch/arm/boot/dts/dra7-ipu-dsp-common.dtsi: &ipu2 { mboxes = <&mailbox6 &mbox_ipu2_ipc3x>; ti,timers = <&timer3>; ti,watchdog-timers = <&timer4>, <&timer9>; }; The conflict was noticed when booting mainline on the BeagleBoard X15 which has a TI AM5728 SoC: remoteproc remoteproc1: 55020000.ipu is available remoteproc remoteproc1: powering up 55020000.ipu remoteproc remoteproc1: Booting fw image dra7-ipu2-fw.xem4 omap-rproc 55020000.ipu: could not get timer platform device omap-rproc 55020000.ipu: omap_rproc_enable_timers failed: -19 remoteproc remoteproc1: can't start rproc 55020000.ipu: -19 This change modifies the errata fix to instead use timer 15 and 16 which resolves the timer conflict. It does not appear to introduce any latency regression. Results from cyclictest with original errata fix using dmtimer 3 and 4: # cyclictest --mlockall --smp --priority=80 --interval=200 --distance=0 policy: fifo: loadavg: 0.02 0.03 0.05 T: 0 ( 1449) P:80 I:200 C: 800368 Min: 0 Act: 32 Avg: 22 Max: 128 T: 1 ( 1450) P:80 I:200 C: 800301 Min: 0 Act: 12 Avg: 23 Max: 70 The results after the change to dmtimer 15 and 16: # cyclictest --mlockall --smp --priority=80 --interval=200 --distance=0 policy: fifo: loadavg: 0.36 0.19 0.07 T: 0 ( 1711) P:80 I:200 C: 759599 Min: 0 Act: 6 Avg: 22 Max: 108 T: 1 ( 1712) P:80 I:200 C: 759539 Min: 0 Act: 19 Avg: 23 Max: 79 Fixes: 25de4ce5ed ("clocksource/drivers/timer-ti-dm: Handle dra7 timer wrap errata i940") Link: https://lore.kernel.org/linux-omap/YfWsG0p6to3IJuvE@x1/ Suggested-by: Suman Anna <s-anna@ti.com> Reviewed-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Drew Fustini <dfustini@baylibre.com> Link: https://lore.kernel.org/r/20220204053503.1409162-1-dfustini@baylibre.com Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-04-08 14:23:08 +02:00
..
alpha	alpha: enable GENERIC_PCI_IOMAP unconditionally	2021-09-19 10:37:00 -07:00
arc	signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV)	2021-11-25 09:49:06 +01:00
arm	clocksource/drivers/timer-ti-dm: Fix regression from errata i940 fix	2022-04-08 14:23:08 +02:00
arm64	arm64/mm: avoid fixmap race condition when create pud mapping	2022-04-08 14:23:06 +02:00
csky	uaccess: fix integer overflow on access_ok()	2022-03-28 09:58:45 +02:00
h8300	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
hexagon	uaccess: fix integer overflow on access_ok()	2022-03-28 09:58:45 +02:00
ia64	PCI/sysfs: Find shadow ROM before static attribute initialization	2022-02-01 17:27:05 +01:00
m68k	m68k: fix access_ok for coldfire	2022-03-28 09:58:46 +02:00
microblaze	uaccess: fix integer overflow on access_ok()	2022-03-28 09:58:45 +02:00
mips	DEC: Limit PMAX memory probing to R3k systems	2022-04-08 14:23:02 +02:00
nds32	nds32: fix access_ok() checks in get/put_user	2022-03-28 09:58:46 +02:00
nios2	nios2: Make NIOS2_DTB_SOURCE_BOOL depend on !COMPILE_TEST	2021-10-27 09:29:07 -05:00
openrisc	openrisc: Add clone3 ABI wrapper	2022-01-27 11:04:10 +01:00
parisc	parisc/unaligned: Fix ldw() and stw() unalignment handlers	2022-03-02 11:47:49 +01:00
powerpc	powerpc/kvm: Fix kvm_use_magic_page	2022-04-08 14:22:57 +02:00
riscv	riscv: Increase stack size under KASAN	2022-04-08 14:22:55 +02:00
s390	s390/extable: fix exception table sorting	2022-03-08 19:12:48 +01:00
sh	Documentation, arch: Remove leftovers from CIFS_WEAK_PW_HASH	2022-01-27 11:05:21 +01:00
sparc	signal: Replace force_fatal_sig with force_exit_sig when in doubt	2021-11-25 09:49:07 +01:00
um	block: drop unused includes in <linux/genhd.h>	2022-03-16 14:23:46 +01:00
x86	ACPI / x86: Work around broken XSDT on Advantech DAC-BJ01 board	2022-03-28 09:58:44 +02:00
xtensa	xtensa: fix xtensa_wsr always writing 0	2022-04-08 14:23:03 +02:00
.gitignore
Kconfig	stack: Constrain and fix stack offset randomization with Clang builds	2022-04-08 14:23:06 +02:00