From mboxrd@z Thu Jan  1 00:00:00 1970
From: arnd@arndb.de (Arnd Bergmann)
Date: Fri, 16 Jan 2015 18:31:46 +0100
Subject: [PATCH 00/10] drivers: PL011: add ARM SBSA Generic UART support
In-Reply-To: <1421428986-11300-1-git-send-email-andre.przywara@arm.com>
References: <1421428986-11300-1-git-send-email-andre.przywara@arm.com>
Message-ID: <7542669.MXdXNkVnKh@wuerfel>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Friday 16 January 2015 17:22:56 Andre Przywara wrote:
> The ARM Server Base System Architecture[1] document describes a
> generic UART which is a subset of the PL011 UART.
> It lacks DMA support, baud rate control and modem status line
> control, among other things.
> The idea is to move the UART initialization and setup into the
> firmware (which does this job today already) and let the kernel just
> use the UART for sending and receiving characters.

Given that all other approaches that have been tried have failed, this
seems like the best way forward. I don't know enough about the driver
to do a detailed review, but all patches looked good to me as far as
I could tell.

One question: How does the name space and minor number allocation work
if you have both sbsa-uart and real pl011 in the same system? Do
they share the ttyAMA name space without collisions?

	Arnd