linux-kernel - Re: [PATCHv5 1/3] ARM: tegra: Add Tegra AHB driver

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Message-ID: <20120507183611.GA725@kroah.com>
Date:	Mon, 7 May 2012 11:36:11 -0700
From:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
To:	Hiroshi Doyu <hdoyu@...dia.com>
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Subject: Re: [PATCHv5 1/3] ARM: tegra: Add Tegra AHB driver

On Mon, May 07, 2012 at 01:36:47PM +0200, Hiroshi Doyu wrote:
> From: Arnd Bergmann <arnd@...db.de>
> Subject: Re: [PATCHv5 1/3] ARM: tegra: Add Tegra AHB driver
> Date: Mon, 7 May 2012 12:24:48 +0200
> Message-ID: <201205071024.48958.arnd@...db.de>
> 
> > On Monday 07 May 2012, Hiroshi Doyu wrote:
> > > Tegra doesn't enable ARM_AMBA and Tegra doesn't use the following
> > > "drivers/amba/bus.c" right now. I needed to make this directory
> > > available to ones without ARM_AMBA enabled.
> > 
> > Ah, right. I looked at arch/arm/Kconfig earlier to see if
> > tegra enabled ARM_AMBA but was accidentally looking
> > at ARCH_INtegraTOR when grepping for TEGRA ;-)
> > 
> > Your proposed solution sounds good then.
> 
> Thank you for reviewing patches & ACK. Attached the update one here,
> instead of sending a while series again.
> 
> >From 16cc2b0fab00c33cd24bb5c43c45a4cda646ad42 Mon Sep 17 00:00:00 2001
> From: Hiroshi DOYU <hdoyu@...dia.com>
> Date: Wed, 18 Apr 2012 11:41:56 +0300
> Subject: [PATCHv5 1/3] ARM: tegra: Add Tegra AHB driver
> 
> Tegra AHB Bus conforms to the AMBA Specification (Rev 2.0) Advanced
> High-performance Bus (AHB) architecture.
> 
> The AHB Arbiter controls AHB bus master arbitration. This effectively
> forms a second level of arbitration for access to the memory
> controller through the AHB Slave Memory device. The AHB pre-fetch
> logic can be configured to enhance performance for devices doing
> sequential access. Each AHB master is assigned to either the high or
> low priority bin. Both Tegra20/30 have this AHB bus.
> 
> Some of configuration params could be passed from DT too if needed.
> 
> Change-Id: I184e0e1ce033e76881353a4bb99234e2850e99c2

What nonsense is this?  Please never put that in a patch you want
accepted upstream, as it makes no sense and we just have to edit it out
by hand, making us grumpy...

greg k-h
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