From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 911D8B7195 for ; Sat, 17 Mar 2012 02:49:12 +1100 (EST) Subject: Re: [PATCH 1/2] [v4] powerpc/85xx: p1022ds: disable the NOR flash node if video is enabled Mime-Version: 1.0 (Apple Message framework v1257) Content-Type: text/plain; charset=us-ascii From: Kumar Gala In-Reply-To: <1329351948-20581-1-git-send-email-timur@freescale.com> Date: Fri, 16 Mar 2012 10:48:55 -0500 Message-Id: References: <1329351948-20581-1-git-send-email-timur@freescale.com> To: Timur Tabi Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Feb 15, 2012, at 6:25 PM, Timur Tabi wrote: > The Freescale P1022 has a unique pin muxing "feature" where the DIU = video > controller's video signals are muxed with 24 of the local bus address = signals. > When the DIU is enabled, the bulk of the local bus is disabled, = preventing > access to memory-mapped devices like NOR flash and the pixis FPGA. >=20 > Therefore, if the DIU is going to be enabled, then memory-mapped = devices on > the localbus, like NOR flash, need to be disabled. >=20 > This also means that the localbus is not a 'simple-bus' any more, so = remove > that string from the compatible node. >=20 > Signed-off-by: Timur Tabi > --- > arch/powerpc/boot/dts/fsl/p1022si-post.dtsi | 6 ++- > arch/powerpc/platforms/85xx/p1022_ds.c | 71 = +++++++++++++++++++++++++++ > 2 files changed, 76 insertions(+), 1 deletions(-) applied - k=