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Re: [rtc-linux] [RFC][PATCH 0/4] RTC: Use class devices as a persistent

Subject: Re: [rtc-linux] [RFC][PATCH 0/4] RTC: Use class devices as a persistent clock
From: Alessandro Zummo <>
Date: Wed, 7 May 2008 08:57:39 +0200
Cc:, Jean Delvare <>, Ralf Baechle <>, Thomas Gleixner <>, Andrew Morton <>,,,
In-reply-to: <>
Organization: Tower Technologies
Original-recipient: rfc822;
References: <>
On Wed, 7 May 2008 01:39:59 +0100 (BST)
"Maciej W. Rozycki" <> wrote:

> Hello,
>  While investigating why Linux on the MIPS64 Broadcom BCM91250A board (the
> SWARM, based on the SiByte BCM1250A SOC) does not support an RTC device
> anymore I discovered the "wiring" of code to access /dev/rtc to the RTC
> device driver got removed with some changes that happened a while ago.  
> The board uses the ST M41T81 I2C chip with a driver buried within the
> architecture code.  There is a standard driver for this chip in our tree
> already, which is called rtc-m41t80, and which as a part of the RTC driver
> suite provides the necessary "wiring" to /dev/rtc.


 Hi Maciej,

   you did a great work. you have my Acked-by on the rtc/ntp code, but
 I think we'd need some reports from current users of the m41t81 driver
 before pushing that one in.


 Best regards,

 Alessandro Zummo,
  Tower Technologies - Torino, Italy

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