linux-kernel - Re: [PATCH] tty: amba-pl011: Use 32-bit accesses for SBSA UART

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Date:	Tue, 8 Mar 2016 08:51:53 -0600
From:	Mark Langsdorf <mlangsdo@...hat.com>
To:	Christopher Covington <cov@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.com>, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	linux-arm-msm@...r.kernel.org, Timur Tabi <timur@...eaurora.org>,
	Jon Masters <jcm@...hat.com>,
	Andre Przywara <andre.przywara@....com>,
	Dave Martin <dave.martin@...aro.org>,
	Aleksey Makarov <aleksey.makarov@...aro.org>,
	Christopher Covington <christopher.covington@...aro.org>
Subject: Re: [PATCH] tty: amba-pl011: Use 32-bit accesses for SBSA UART

On 03/07/2016 11:43 PM, Christopher Covington wrote:
> From: Christopher Covington <christopher.covington@...aro.org>
>
> Version 2 of the Server Base System Architecture (SBSA) describes the
> Generic UART registers as 32 bits wide. At least one implementation, found
> of the Qualcomm Technologies QDF2432, only supports 32 bit accesses. While
> other implementations may also support smaller sized accesses, simply use
> 32 bit accesses all the time for the SBSA UART for simple, broad,
> compatibility.
>
> Signed-off-by: Christopher Covington <cov@...eaurora.org>
> ---

I can boot the v4.5-rc7 on my QDF2432 platform with this patch,
and could not otherwise.

Tested-by: Mark Langsdorf <mlangsdo@...hat.com>