On 05/04/2012 12:40 AM, Hiroshi Doyu wrote:

From: Stephen Warren <redacted>
Subject: Re: [PATCHv3 1/4] ARM: tegra: Add Tegra AHB driver
Date: Thu, 3 May 2012 19:59:33 +0200
Message-ID: [ref]

quoted

On 05/03/2012 10:05 AM, Hiroshi DOYU wrote:

quoted

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 param could be passed from DT too.

This patch should add
Documentation/devicetree/bindings/arm/tegra/tegra20-ahb.txt to describe
the DT binding.

From 'dts' POV, there's no difference between tegra20 and
tegra30. They just have a register range. Is
"../bindings/arm/tegra/tegra-ahb.txt" ok, instead of having both
tegra{20,30}-ahb.txt?

Personally, I prefer to name files using the exact compatible value of
the first SoC version that introduced the HW. This allows e.g.
"tegra40-ahb.txt" to be introduced without making "tegra-ahb.txt" no
longer fully general.