On 12.06.20 13:41, Jouko Haapaluoma via Xenomai wrote:
> This patch set adds basic I-pipe support for the SAMA5D3 SoC
>
> A few mainline patches need to be applied to the tcb_clksrc driver so
> that it can be used as the only clocksource. A patch from RT_PREEMPT
> was also merged to support higher than 32k clkevent frequency.
>
> Additional patch was created to increase the clkevent max_delta to 32-bit
> when TCB has 32-bit channels. This makes it possible to always use high
> resolution clkevent when 32-bit channels are available.
>
> After that the ipipe_timer and clksrc support can be added into tcb_clksrc.
>
> Pinctrl-at91 also requires usage of the ipipe_handle_demuxed_irq()
>
> Tested with latest ipipe-arm branch ipipe/master (Linux 4.19.82)
>
> Alexandre Belloni (4):
> ARM: at91: move SoC specific definitions to SoC folder
> clocksource/drivers/tcb_clksrc: Stop depending on atmel_tclib
> clocksource/drivers/tcb_clksrc: Use tcb as sched_clock
> clocksource/drivers/timer-atmel-pit: Rework Kconfig option
>
> Benedikt Spranger (1):
> clocksource: TCLIB: Allow higher clock rates for clock events
>
> Jouko Haapaluoma (3):
> tcb_clksrc: Always use high resolution with 32-bit channels
> tcb_clksrc: Add ipipe_timer and ipipe_tsc support
> pinctrl-at91: Add ipipe pipeline support
>
> Tuomo Jauhiainen (1):
> mach-at91: Add IPIPE_ARM_KUSER_TSC for SAMA5D3
>
> arch/arm/mach-at91/Kconfig | 1 +
> drivers/clocksource/Kconfig | 5 +-
> drivers/clocksource/tcb_clksrc.c | 237
> +++++++++++++++------
> drivers/misc/Kconfig | 20 +-
> drivers/misc/atmel_tclib.c | 2 +-
> drivers/pinctrl/pinctrl-at91.c | 5 +-
> drivers/pwm/pwm-atmel-tcb.c | 2 +-
> include/{linux/atmel_tc.h => soc/at91/atmel_tcb.h} | 4 +-
> 8 files changed, 189 insertions(+), 87 deletions(-)
> rename include/{linux/atmel_tc.h => soc/at91/atmel_tcb.h} (99%)
>
Great, thanks for the patches! I assume Greg will look into them in details.
Regarding the mainline patches: Are they simply missing in 4.19 because
they were not backported as fixes (feature patches)? Are they safe to be
applied on a stable branch, i.e. side-effect free for other targets?
Jan
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Corporate Competence Center Embedded Linux
