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From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Serge Semin <Sergey.Semin@baikalelectronics.ru>,
	Thomas Gleixner <tglx@linutronix.de>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Serge Semin <fancer.lancer@gmail.com>,
	Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
	Maxim Kaurkin <Maxim.Kaurkin@baikalelectronics.ru>,
	Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
	Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru>,
	Ekaterina Skachko <Ekaterina.Skachko@baikalelectronics.ru>,
	Vadim Vlasov <V.Vlasov@baikalelectronics.ru>,
	Alexey Kolotnikov <Alexey.Kolotnikov@baikalelectronics.ru>,
	Paul Burton <paulburton@kernel.org>,
	Ralf Baechle <ralf@linux-mips.org>, Arnd Bergmann <arnd@arndb.de>,
	Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Rob Herring <robh+dt@kernel.org>,
	linux-mips@vger.kernel.org, linux-rtc@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
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: <211ab91d-6085-3073-1cbc-2300abade1b7@linaro.org> (raw)
In-Reply-To: <20200521204818.25436-1-Sergey.Semin@baikalelectronics.ru>

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

Thanks!

  -- Daniel


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Thread overview: 18+ 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
2020-06-01 13:11   ` [tip: timers/core] " tip-bot2 for Serge Semin
2020-05-21 20:48 ` [PATCH v5 5/8] clocksource: dw_apb_timer: Affiliate of-based timer with any CPU Serge Semin
2020-06-01 13:11   ` [tip: timers/core] " tip-bot2 for Serge Semin
2020-05-21 20:48 ` [PATCH v5 6/8] clocksource: dw_apb_timer_of: Fix missing clockevent timers Serge Semin
2020-06-01 13:11   ` [tip: timers/core] " tip-bot2 for Serge Semin
2020-05-21 20:48 ` [PATCH v5 7/8] clocksource: mips-gic-timer: Register as sched_clock Serge Semin
2020-06-01 13:11   ` [tip: timers/core] " tip-bot2 for Paul Burton
2020-05-21 20:48 ` [PATCH v5 8/8] clocksource: mips-gic-timer: Mark GIC timer as unstable if ref clock changes Serge Semin
2020-06-01 13:11   ` [tip: timers/core] " tip-bot2 for 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

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