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From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Tomasz Figa <tomasz.figa@gmail.com>, Lee Jones <lee.jones@linaro.org>
Cc: 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>,
	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, Arnd Bergmann <arnd@arndb.de>,
	Olof Johansson <olof@lixom.net>
Subject: Re: [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs
Date: Thu, 30 Sep 2021 14:15:03 +0200	[thread overview]
Message-ID: <8729f109-93c1-24dc-f7d9-9c83d7ac24dc@canonical.com> (raw)
In-Reply-To: <CA+Ln22FBy2ks9gX3df=rQw-6W3iftMVoqsoqBPchGCqDDoMaLg@mail.gmail.com>

On 30/09/2021 14:10, Tomasz Figa wrote:
> 2021年9月30日(木) 20:51 Lee Jones <lee.jones@linaro.org>:
>>
>> On Thu, 30 Sep 2021, Tomasz Figa wrote:
>>
>>
>> Is that the same as exporting symbols to framework APIs?
>>
>> Since this is already a method GKI uses to allow external modules to
>> interact with the core kernel/frameworks.  However, it's not possible
>> to upstream these without an upstream user for each one.
> 
> Not necessary the core frameworks, could also be changing the ways the
> existing drivers register to allow additional drivers to extend the
> functionality rather than completely overwrite them. 

Yes, the first user could be within the kernel after modifying some of
the drivers.

> It's really hard
> to tell what the right way would be without knowing the exact things
> they find missing in the upstream drivers. As for upstream users, this
> is exactly the point - upstream is a bidirectional effort, one takes
> from it and should contribute things back.
> 
> Generally, the subsystems being mentioned here are so basic (clock,
> pinctrl, rtc), that I really can't imagine what kind of rocket science
> one might want to hide for competitive reasons... If it's for an
> entire SoC, I wonder why Intel and AMD don't have similar concerns and
> contribute support for their newest hardware far before the release.

Lee used the argument of not-disclosing-edge-hw but I also don't see
much of it in the case of few drivers needed to be overridden. Just
bunch of registers for the same stuff we have sine 8 years. Rather the
vendor does not want to commit effort towards upstreaming these...


Best regards,
Krzysztof

  reply	other threads:[~2021-09-30 12:15 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
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 [this message]
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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