From: Kevin Hilman <khilman@ti.com>
To: Paul Walmsley <paul@pwsan.com>
Cc: Tony Lindgren <tony@atomide.com>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>,
Jarkko Nikula <jarkko.nikula@bitmer.com>,
Greg KH <gregkh@linuxfoundation.org>,
Grazvydas Ignotas <notasas@gmail.com>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
linux-serial@vger.kernel.org
Subject: Re: [PATCH] ARM: OMAP2xxx: PM: fix OMAP2xxx-specific UART idle bug in v3.3
Date: Thu, 09 Feb 2012 18:33:46 -0800 [thread overview]
Message-ID: <8762ffzab9.fsf@ti.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1202091822170.5059@utopia.booyaka.com> (Paul Walmsley's message of "Thu, 9 Feb 2012 18:24:03 -0700 (MST)")
Paul Walmsley <paul@pwsan.com> writes:
> [ This patch is targeted for v3.3-rc ]
>
> On OMAP2420-based systems, the PM code ignores the state of the UART
> functional clocks when determining what idle state to enter. This
> breaks the serial port now that the UART driver's clock behavior can
> be controlled via the PM autosuspend timeout.
>
> To fix, remove the special-case idle handling for the UARTs in the
> OMAP2420/2430 PM idle code added by commit
> 4af4016c53f52b26461b8030211f8427a58fa5ed ("OMAP3: PM: UART: disable
> clocks when idle and off-mode support").
>
> Tested on Nokia N800. This patch is a collaboration between Tony
> Lindgren <tony@atomide.com> and Paul Walmsley <paul@pwsan.com>.
>
> Cc: Kevin Hilman <khilman@ti.com>
> Cc: Tony Lindgren <tony@atomide.com>
> Signed-off-by: Paul Walmsley <paul@pwsan.com>
Acked-by: Kevin Hilman <khilman@ti.com>
WARNING: multiple messages have this Message-ID (diff)
From: khilman@ti.com (Kevin Hilman)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: OMAP2xxx: PM: fix OMAP2xxx-specific UART idle bug in v3.3
Date: Thu, 09 Feb 2012 18:33:46 -0800 [thread overview]
Message-ID: <8762ffzab9.fsf@ti.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1202091822170.5059@utopia.booyaka.com> (Paul Walmsley's message of "Thu, 9 Feb 2012 18:24:03 -0700 (MST)")
Paul Walmsley <paul@pwsan.com> writes:
> [ This patch is targeted for v3.3-rc ]
>
> On OMAP2420-based systems, the PM code ignores the state of the UART
> functional clocks when determining what idle state to enter. This
> breaks the serial port now that the UART driver's clock behavior can
> be controlled via the PM autosuspend timeout.
>
> To fix, remove the special-case idle handling for the UARTs in the
> OMAP2420/2430 PM idle code added by commit
> 4af4016c53f52b26461b8030211f8427a58fa5ed ("OMAP3: PM: UART: disable
> clocks when idle and off-mode support").
>
> Tested on Nokia N800. This patch is a collaboration between Tony
> Lindgren <tony@atomide.com> and Paul Walmsley <paul@pwsan.com>.
>
> Cc: Kevin Hilman <khilman@ti.com>
> Cc: Tony Lindgren <tony@atomide.com>
> Signed-off-by: Paul Walmsley <paul@pwsan.com>
Acked-by: Kevin Hilman <khilman@ti.com>
next prev parent reply other threads:[~2012-02-10 2:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-10 1:24 [PATCH] ARM: OMAP2xxx: PM: fix OMAP2xxx-specific UART idle bug in v3.3 Paul Walmsley
2012-02-10 1:24 ` Paul Walmsley
2012-02-10 1:52 ` Tony Lindgren
2012-02-10 1:52 ` Tony Lindgren
2012-02-10 2:33 ` Kevin Hilman [this message]
2012-02-10 2:33 ` Kevin Hilman
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