From: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
To: Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>,
Colin Cross <ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org>
Cc: Prashant Gaikwad
<pgaikwad-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH] ARM: tegra: turn on UART A clock at boot
Date: Fri, 03 Aug 2012 12:01:40 -0600 [thread overview]
Message-ID: <501C1204.3010004@wwwdotorg.org> (raw)
In-Reply-To: <1343170200-28228-1-git-send-email-swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
On 07/24/2012 04:50 PM, Stephen Warren wrote:
> From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
>
> Some boards use UART D for the main serial console, and some use UART A.
> UART D's clock is listed in board-dt-tegra20.c's clock table, whereas
> UART A's clock is not. This causes the clock code to think UART A's
> clock is unsed. The common clock framework turns off unused clocks at
> boot time. This makes the kernel appear to hang. Add UART A's clock into
> the clock table to prevent this. Eventually, this requirement should be
> handled by the UART driver, and/or properties in a board-specific device
> tree file.
Applied to for-3.7/common-clk.
WARNING: multiple messages have this Message-ID (diff)
From: swarren@wwwdotorg.org (Stephen Warren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: tegra: turn on UART A clock at boot
Date: Fri, 03 Aug 2012 12:01:40 -0600 [thread overview]
Message-ID: <501C1204.3010004@wwwdotorg.org> (raw)
In-Reply-To: <1343170200-28228-1-git-send-email-swarren@wwwdotorg.org>
On 07/24/2012 04:50 PM, Stephen Warren wrote:
> From: Stephen Warren <swarren@nvidia.com>
>
> Some boards use UART D for the main serial console, and some use UART A.
> UART D's clock is listed in board-dt-tegra20.c's clock table, whereas
> UART A's clock is not. This causes the clock code to think UART A's
> clock is unsed. The common clock framework turns off unused clocks at
> boot time. This makes the kernel appear to hang. Add UART A's clock into
> the clock table to prevent this. Eventually, this requirement should be
> handled by the UART driver, and/or properties in a board-specific device
> tree file.
Applied to for-3.7/common-clk.
next prev parent reply other threads:[~2012-08-03 18:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-24 22:50 [PATCH] ARM: tegra: turn on UART A clock at boot Stephen Warren
2012-07-24 22:50 ` Stephen Warren
[not found] ` <1343170200-28228-1-git-send-email-swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-07-25 6:41 ` Prashant Gaikwad
2012-07-25 6:41 ` Prashant Gaikwad
2012-08-03 18:01 ` Stephen Warren [this message]
2012-08-03 18:01 ` Stephen Warren
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