From mboxrd@z Thu Jan  1 00:00:00 1970
From: pawel.moll@arm.com (Pawel Moll)
Date: Mon, 17 Dec 2012 12:32:29 +0000
Subject: [PATCH] arm: vexpress: hook platform_data to clcd_pl11x by amba
 bus_notify
In-Reply-To: <1355549964-12893-1-git-send-email-21cnbao@gmail.com>
References: <1355549964-12893-1-git-send-email-21cnbao@gmail.com>
Message-ID: <1355747549.2978.5.camel@hornet>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Sat, 2012-12-15 at 05:39 +0000, Barry Song wrote:
> From: Barry Song <Baohua.Song@csr.com>
> 
> when using dtb to boot v2p-ca9, clcd probe will fail due to missed
> the platform_data:
> clcd-pl11x: probe of 10020000.clcd failed with error -22
> this patch hooks the platform_data to clcd and make lcd of v2p-ca9
> can work while booting vexpress by DTB.
> Tested on qemu by "qemu-system-arm -M vexpress-a9 -m 512M -kernel
> zImage -dtb ./vexpress-v2p-ca9.dtb"
> 
> Signed-off-by: Barry Song <Baohua.Song@csr.com>

Thanks for your work, however there are some problems with your code,
especially if you look at the changes being merged right now for 3.8
kernel... The clocking implementation is completely changed (actually
you should not need any extra CLCD information now), and as the auxdata
for devices population is removed, you could use it instead of the -
slightly strange to my taste - notifier-based solution.

Now having said all that, I'm hoping to get comprehensive solution for
DT-based VE display devices ready in time for 3.9, which will sort out
the issue once for all.

Pawe?