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From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Lee Jones <lee.jones@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Will McVicker <willmcvicker@google.com>,
	Russell King <linux@armlinux.org.uk>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Sylwester Nawrocki <s.nawrocki@samsung.com>,
	Tomasz Figa <tomasz.figa@gmail.com>,
	Chanwoo Choi <cw00.choi@samsung.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	John Stultz <john.stultz@linaro.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Saravana Kannan <saravanak@google.com>,
	"Cc: Android Kernel" <kernel-team@android.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
	linux-clk <linux-clk@vger.kernel.org>,
	"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	linux-rtc@vger.kernel.org, Olof Johansson <olof@lixom.net>
Subject: Re: [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs
Date: Thu, 30 Sep 2021 14:38:39 +0200	[thread overview]
Message-ID: <5eb551d9-a26e-f4eb-6641-3264c2398adc@canonical.com> (raw)
In-Reply-To: <YVWu2RoSqEzcG79I@google.com>

On 30/09/2021 14:34, Lee Jones wrote:
> On Thu, 30 Sep 2021, Krzysztof Kozlowski wrote:
>>>   It sounds like a lack of testing is your main concern.
>>>
>>>   How can I help here?  What H/W do I need to be able to fully test this?
>>
>> The changes here need to be tested on affected platforms (ARMv7 and
>> ARMv8), when built as a modules on some types of regular distros (e.g.
>> Arch, Ubuntu). From each of such boot I would be happy to see number of
>> new dmesg warnings/errors plus number of probe deferrals.
>>
>> Since the drivers could be switched to modules (and some distros might
>> do it), they might be hit by surprise regressions in boot performance
>> due to probe deferrals. This should be also checked on these platforms.
>> Geert pointed out before that clocks in many cases are not optional -
>> driver needs them and will wait defer.
>>
>> Assuming of course that boot succeeds. Minor differences in boot speed
>> should not be a problem, I think, because distro anyway chosen
>> all-module approach so it accepts the penalty.
> 
> Do you have any suggestions in terms of devboards?

Minimal set:
1. Something with Exynos4 (e.g. Odroid U3 with Exynos4412).
2. Something with Exynos 5422/5800 (e.g. Odroid XU3/XU4/HC1/MC1 or
Chromebook Peach Pi).
3. Exynos5433 - TM2 or TM2E. Boards are not widely available, so we need
to rely on provided testing by Samsung.

What would be good is to also test Exynos3 boards, but this is also not
widely available.


Best regards,
Krzysztof

  reply	other threads:[~2021-09-30 12:38 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-28 23:56 [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs Will McVicker
2021-09-28 23:56 ` [PATCH v2 01/12] arm64: don't have ARCH_EXYNOS select EXYNOS_CHIPID Will McVicker
2021-09-29 13:58   ` (subset) " Krzysztof Kozlowski
2021-09-29 14:00   ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 02/12] timekeeping: add API for getting timekeeping_suspended Will McVicker
2021-09-29  3:42   ` John Stultz
2021-09-29 20:01     ` Will McVicker
2021-09-29 20:46       ` John Stultz
2021-09-30 18:31         ` Will McVicker
2021-09-28 23:56 ` [PATCH v2 03/12] clk: samsung: add support for CPU clocks Will McVicker
2021-09-28 23:56 ` [PATCH v2 04/12] clk: samsung: exynos5433: update apollo and atlas clock probing Will McVicker
2021-09-28 23:56 ` [PATCH v2 05/12] clk: export __clk_lookup Will McVicker
2021-10-08  4:31   ` Stephen Boyd
2021-09-28 23:56 ` [PATCH v2 06/12] clk: samsung: modularize exynos arm64 clk drivers Will McVicker
2021-09-28 23:56 ` [PATCH v2 07/12] clk: samsung: set exynos arm64 clk driver as tristate Will McVicker
2021-09-29 13:09   ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 08/12] pinctrl: samsung: modularize the ARM and ARM64 pinctrls Will McVicker
2021-09-29  2:01   ` Chanho Park
2021-09-28 23:56 ` [PATCH v2 09/12] pinctrl: samsung: set PINCTRL_EXYNOS and PINCTRL_SAMSUNG as tristate Will McVicker
2021-09-28 23:56 ` [PATCH v2 10/12] soc: samsung: pmu: modularize the Exynos ARMv8 PMU driver Will McVicker
2021-09-29 13:11   ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 11/12] soc: samsung: pm_domains: modularize EXYNOS_PM_DOMAINS Will McVicker
2021-09-29 13:36   ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 12/12] ARM: rtc: remove HAVE_S3C_RTC in favor of direct dependencies Will McVicker
2021-09-29 11:52   ` Alexandre Belloni
2021-09-29 13:02 ` [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs Krzysztof Kozlowski
2021-09-29 19:48   ` Will McVicker
2021-09-30  6:14     ` Krzysztof Kozlowski
2021-09-30  9:01       ` Arnd Bergmann
2021-09-30  9:30         ` Lee Jones
2021-09-30 10:33           ` Krzysztof Kozlowski
2021-09-30 12:34             ` Lee Jones
2021-09-30 12:38               ` Krzysztof Kozlowski [this message]
2021-09-30 10:05         ` Geert Uytterhoeven
2021-09-30  9:23       ` Lee Jones
2021-09-30 10:17         ` Geert Uytterhoeven
2021-09-30 10:56           ` Lee Jones
2021-09-30 11:25             ` Geert Uytterhoeven
2021-09-30 12:08               ` Lee Jones
2021-09-30 16:09                 ` Geert Uytterhoeven
2021-09-30 10:52         ` Krzysztof Kozlowski
2021-09-30 12:32           ` Lee Jones
2021-09-30 11:01         ` Tomasz Figa
2021-09-30 11:27           ` Geert Uytterhoeven
2021-09-30 11:51           ` Lee Jones
2021-09-30 12:10             ` Tomasz Figa
2021-09-30 12:15               ` Krzysztof Kozlowski
2021-09-30 12:45               ` Lee Jones
2021-10-01  4:01               ` Christoph Hellwig
2021-10-01  4:52                 ` Saravana Kannan
2021-10-01  4:55                   ` Christoph Hellwig
2021-09-30 12:21         ` Krzysztof Kozlowski
2021-09-30 12:39           ` Lee Jones
2021-09-30 13:08             ` Krzysztof Kozlowski
2021-09-30 13:29               ` Lee Jones
2021-09-30 16:12                 ` Geert Uytterhoeven
2021-09-30 16:21                   ` Lee Jones
2021-09-30 16:26                     ` Geert Uytterhoeven
2021-09-30 18:02                       ` Will McVicker
2021-10-01  4:04             ` Christoph Hellwig
2021-10-01  4:52     ` Olof Johansson
2021-10-01  5:23       ` Saravana Kannan
2021-10-01  5:35         ` Olof Johansson
2021-10-01  5:59           ` Will McVicker
2021-10-01  8:01             ` Krzysztof Kozlowski
2021-10-01  6:02           ` Saravana Kannan
2021-10-01  6:27             ` Olof Johansson
2021-10-01  6:30               ` Olof Johansson
2021-10-01 12:00             ` Arnd Bergmann
2021-10-01 12:31               ` Lee Jones
2021-10-01 15:43                 ` Olof Johansson
2021-10-01 11:38           ` Linus Walleij
2021-10-01 11:59           ` Geert Uytterhoeven
2021-10-01 15:59             ` Olof Johansson
2021-10-01 16:51               ` Will McVicker
2021-10-01 17:15                 ` Olof Johansson
2021-10-01 17:48                   ` Will McVicker
2021-10-01  8:19         ` Geert Uytterhoeven
2021-10-01  9:00           ` Arnd Bergmann
2021-10-01 15:27             ` Olof Johansson
2021-10-01 19:26               ` Saravana Kannan
2021-10-02  1:47                 ` Tomasz Figa
2021-10-02 21:03                 ` Olof Johansson

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