linux-kernel - Re: [PATCH 00/06] serial8250: DLL/DLM rework, Emma Mobile UART driver

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Date:	Wed, 2 May 2012 14:03:21 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Magnus Damm <magnus.damm@...il.com>
Cc:	linux-serial@...r.kernel.org, horms@...ge.net.au, arnd@...db.de,
	linux-sh@...r.kernel.org, gregkh@...uxfoundation.org,
	swarren@...dotorg.org, linux-kernel@...r.kernel.org, rjw@...k.pl,
	paul.gortmaker@...driver.com, lethal@...ux-sh.org, olof@...om.net,
	dan.j.williams@...el.com, alan@...ux.intel.com
Subject: Re: [PATCH 00/06] serial8250: DLL/DLM rework, Emma Mobile UART
 driver

On Wed, 02 May 2012 21:46:42 +0900
Magnus Damm <magnus.damm@...il.com> wrote:

> serial8250: DLL/DLM rework, Emma Mobile UART driver
> 
> [PATCH 01/06] serial8250: Add dl_read()/dl_write() callbacks
> [PATCH 02/06] serial8250: Use dl_read()/dl_write() on Alchemy
> [PATCH 03/06] serial8250: Use dl_read()/dl_write() on RM9K
> [PATCH 04/06] serial8250: Clean up default map and dl code
> [PATCH 05/06] serial8250: Introduce serial8250_register_8250_port()
> [PATCH 06/06] serial8250-em: Add Emma Mobile UART driver
> 
> This series cleans up and adjusts the 8250 code base to allow
> hooking in a driver for the UART in Emma Mobile SoCs.
> 
> In short:
> - Patch 1-4 tie in 8250-specific dl_read()/dl_write() callbacks.
> - Patch 5 adds a new register function to use new callbacks.
> - Patch 6 adds a new driver that makes use of the above.
> 
> I'd be happy to rework the above patches if needed. The
> main challenge for Emma Mobile UART support is the non-
> standard offsets for DLL and DLM registers.
> 
> Note that there is no DT support included at this point,
> but it boils down to a 10 line change. The boot loader on
> my board does not do DT so I'd like to use kexec for DT
> development (as usual), but to use kexec I first need to
> get a non-DT kernel working. Which is basically this. =)
> 
> Signed-off-by: Magnus Damm <damm@...nsource.se>

Acked-by: Alan Cox <alan@...ux.intel.com>
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