From: Russell King - ARM Linux <linux@armlinux.org.uk>
To: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Kukjin Kim <kgene@kernel.org>,
Javier Martinez Canillas <javier@osg.samsung.com>,
"linux-samsung-soc@vger.kernel.org"
<linux-samsung-soc@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Ben Dooks <ben.dooks@codethink.co.uk>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Lee Jones <lee.jones@linaro.org>,
Marek Szyprowski <m.szyprowski@samsung.com>
Subject: Re: [PATCH v2] ARM: Drop fixed 200 Hz timer requirement from Samsung platforms
Date: Mon, 21 Nov 2016 09:24:45 +0000 [thread overview]
Message-ID: <20161121092445.GA1041@n2100.armlinux.org.uk> (raw)
In-Reply-To: <CA+Ln22GyRwywcxdO4Gp67d8TfpjfNzaE0z25=WW9GWibjGkDuQ@mail.gmail.com>
On Mon, Nov 21, 2016 at 03:01:57PM +0900, Tomasz Figa wrote:
> One thing to correct here is that the typical clock is PCLK, which is
> derived from one of the PLLs and AFAIR is between 33-66 MHz on
> s3c24xx. Technically you can drive the PWM block from an external
> clock (12 MHz for some board-file based boards), but for simplicity
> this functionality was omitted in the new PWM timer driver used for DT
> boards (which worked fine with the PWM driven by PCLK).
So that's a knowingly-made regression for s3c24xx then. Pretty
disgusting developer behavior to do that, IMHO.
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
WARNING: multiple messages have this Message-ID (diff)
From: linux@armlinux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] ARM: Drop fixed 200 Hz timer requirement from Samsung platforms
Date: Mon, 21 Nov 2016 09:24:45 +0000 [thread overview]
Message-ID: <20161121092445.GA1041@n2100.armlinux.org.uk> (raw)
In-Reply-To: <CA+Ln22GyRwywcxdO4Gp67d8TfpjfNzaE0z25=WW9GWibjGkDuQ@mail.gmail.com>
On Mon, Nov 21, 2016 at 03:01:57PM +0900, Tomasz Figa wrote:
> One thing to correct here is that the typical clock is PCLK, which is
> derived from one of the PLLs and AFAIR is between 33-66 MHz on
> s3c24xx. Technically you can drive the PWM block from an external
> clock (12 MHz for some board-file based boards), but for simplicity
> this functionality was omitted in the new PWM timer driver used for DT
> boards (which worked fine with the PWM driven by PCLK).
So that's a knowingly-made regression for s3c24xx then. Pretty
disgusting developer behavior to do that, IMHO.
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
next prev parent reply other threads:[~2016-11-21 9:25 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-18 7:16 [PATCH v2] ARM: Drop fixed 200 Hz timer requirement from Samsung platforms Krzysztof Kozlowski
2016-11-18 7:16 ` Krzysztof Kozlowski
2016-11-18 7:57 ` Kukjin Kim
2016-11-18 7:57 ` Kukjin Kim
2016-11-18 8:46 ` Arnd Bergmann
2016-11-18 8:46 ` Arnd Bergmann
2016-11-18 10:43 ` Sylwester Nawrocki
2016-11-18 10:43 ` Sylwester Nawrocki
2016-11-18 11:10 ` Krzysztof Kozlowski
2016-11-18 11:10 ` Krzysztof Kozlowski
2016-11-21 6:01 ` Tomasz Figa
2016-11-21 6:01 ` Tomasz Figa
2016-11-21 8:59 ` Ben Dooks
2016-11-21 8:59 ` Ben Dooks
2016-11-21 8:59 ` Ben Dooks
2016-11-21 9:07 ` Russell King - ARM Linux
2016-11-21 9:07 ` Russell King - ARM Linux
2016-11-21 9:24 ` Russell King - ARM Linux [this message]
2016-11-21 9:24 ` Russell King - ARM Linux
2016-11-18 13:17 ` Lee Jones
2016-11-18 13:17 ` Lee Jones
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