Linux-RTC Archive on
 help / color / Atom feed
From: Daniel Lezcano <>
To: Serge Semin <>,
	Thomas Gleixner <>,
	Thomas Bogendoerfer <>
Cc: Serge Semin <>,
	Alexey Malahov <>,
	Maxim Kaurkin <>,
	Pavel Parkhomenko <>,
	Ramil Zaripov <>,
	Ekaterina Skachko <>,
	Vadim Vlasov <>,
	Alexey Kolotnikov <>,
	Paul Burton <>,
	Ralf Baechle <>, Arnd Bergmann <>,
	Alessandro Zummo <>,
	Alexandre Belloni <>,
	Rob Herring <>,,,,
Subject: Re: [PATCH v5 0/8] clocksource: Fix MIPS GIC and DW APB Timer for Baikal-T1 SoC support
Date: Fri, 22 May 2020 17:28:42 +0200
Message-ID: <> (raw)
In-Reply-To: <>

On 21/05/2020 22:48, Serge Semin wrote:
> As for all Baikal-T1 SoC related patchsets, which need this, we replaced
> the DW APB Timer legacy plain text-based dt-binding file with DT schema.
> Similarly the MIPS GIC bindings file is also converted to DT schema seeing
> it also defines the MIPS GIC Timer binding.
> Aside from MIPS-specific r4k timer Baikal-T1 chip also provides a
> functionality of two another timers: embedded into the MIPS GIC timer and
> three external DW timers available over APB bus. But we can't use them
> before the corresponding drivers are properly fixed. First of all DW APB
> Timer shouldn't be bound to a single CPU, since as being accessible over
> APB they are external with respect to all possible CPUs. Secondly there
> might be more than just two DW APB Timers in the system (Baikal-T1 has
> three of them), so permit the driver to use one of them as a clocksource
> and the rest - for clockevents. Thirdly it's possible to use MIPS GIC
> timer as a clocksource so register it in the corresponding subsystem
> (the patch has been found in the Paul Burton MIPS repo so I left the
> original Signed-off-by attribute). Finally in the same way as r4k timer
> the MIPS GIC timer should be used with care when CPUFREQ config is enabled
> since in case of CM2 the timer counting depends on the CPU reference clock
> frequency while the clocksource subsystem currently doesn't support the
> timers with non-stable clock.
> This patchset is rebased and tested on the mainline Linux kernel 5.7-rc4:
> base-commit: 0e698dfa2822 ("Linux 5.7-rc4")
> tag: v5.7-rc4

Applied patch 1,2,4,5,6,7,8


  -- Daniel

<> │ Open source software for ARM SoCs

Follow Linaro:  <> Facebook |
<!/linaroorg> Twitter |
<> Blog

  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-21 20:48 Serge Semin
2020-05-21 20:48 ` [PATCH v5 1/8] dt-bindings: rtc: Convert snps,dw-apb-timer to DT schema Serge Semin
2020-05-21 20:48 ` [PATCH v5 2/8] dt-bindings: timer: Move snps,dw-apb-timer DT schema from rtc Serge Semin
2020-05-21 20:48 ` [PATCH v5 3/8] dt-bindings: interrupt-controller: Convert mti,gic to DT schema Serge Semin
2020-05-21 20:48 ` [PATCH v5 4/8] clocksource: dw_apb_timer: Make CPU-affiliation being optional Serge Semin
2020-05-21 20:48 ` [PATCH v5 5/8] clocksource: dw_apb_timer: Affiliate of-based timer with any CPU Serge Semin
2020-05-21 20:48 ` [PATCH v5 6/8] clocksource: dw_apb_timer_of: Fix missing clockevent timers Serge Semin
2020-05-21 20:48 ` [PATCH v5 7/8] clocksource: mips-gic-timer: Register as sched_clock Serge Semin
2020-05-21 20:48 ` [PATCH v5 8/8] clocksource: mips-gic-timer: Mark GIC timer as unstable if ref clock changes Serge Semin
2020-05-22 15:28 ` Daniel Lezcano [this message]
2020-05-22 15:41   ` [PATCH v5 0/8] clocksource: Fix MIPS GIC and DW APB Timer for Baikal-T1 SoC support Serge Semin
2020-05-22 15:44     ` Daniel Lezcano
2020-05-22 16:02       ` Serge Semin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-RTC Archive on

Archives are clonable:
	git clone --mirror linux-rtc/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-rtc linux-rtc/ \
	public-inbox-index linux-rtc

Example config snippet for mirrors

Newsgroup available over NNTP:

AGPL code for this site: git clone