linux-kernel - Re: [PATCH 0/6] Add initial support for Broadcom Cygnus SoC

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Message-ID: <541B5F16.6030005@openwrt.org>
Date:	Thu, 18 Sep 2014 15:39:18 -0700
From:	Florian Fainelli <florian@...nwrt.org>
To:	Hauke Mehrtens <hauke@...ke-m.de>,
	Jonathan Richardson <jonathar@...adcom.com>,
	Christian Daudt <bcm@...thebug.org>,
	Matt Porter <mporter@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	Mike Turquette <mturquette@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	JD Zheng <jdzheng@...adcom.com>
CC:	devicetree@...r.kernel.org, Scott Branden <sbranden@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	Rafał Miłecki <zajec5@...il.com>,
	linux-kernel@...r.kernel.org,
	bcm-kernel-feedback-list@...adcom.com,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 0/6] Add initial support for Broadcom Cygnus SoC

On 09/18/2014 03:31 PM, Hauke Mehrtens wrote:
> On 09/16/2014 09:58 PM, Jonathan Richardson wrote:
>> Hi,
>>
>> This patchset contains initial support for Broadcom's Cygnus SoC based on our
>> iProc architecture. Initial support is minimal and includes just the mach
>> platform code, clock driver, and a basic device tree configuration. Peripheral
>> drivers will be submitted soon, as will device tree configurations for other
>> Cygnus board variants.
> 
> This SoC looks similar to the BCM5301X (Northstar) SoCs even some cores
> are at the same memory addresses. Does this SoC use an AXI bus with
> Broadcom Plugins at address 0x18000000 ?
> 
> The BCM5301X (Northstar) SoCs also has an iProc Clock Control Unit and I
> will try to use your driver for that SoC.
> 
> Is Broadcom Cygnus similar to BCM563XX or is it actually the same SoC?

According to this link:
http://lists.denx.de/pipermail/u-boot/2014-August/186086.html

these SoCs, in particular BCM58622 would belong to the StrataGX network
processors:
http://www.broadcom.com/products/Processors/Home-and-Small-Business/BCM5862X-Series.

> 
> Do you have some description of the hardware features of this SoC? Does
> it have PCIe, or Ethernet?

>From the link above, it has Ethernet for sure, and certainly PCIe since
the Wi-Fi chips mentioned in the link above are PCIe chips.

It would be really good if all the work you and Rafal did was usable for
the Cygnus SoCs.
--
Florian
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