From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Thu, 04 Dec 2014 17:30:58 +0100 Subject: [PATCH v3 0/3] SoCFPGA: L3 NIC driver In-Reply-To: <20141130205331.GR20688@pengutronix.de> References: <1417292052-12974-1-git-send-email-s.trumtrar@pengutronix.de> <14512010.yFXFS4V07x@wuerfel> <20141130205331.GR20688@pengutronix.de> Message-ID: <2134330.94UNhqfuFY@wuerfel> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sunday 30 November 2014 21:53:31 Robert Schwebel wrote: > On Sun, Nov 30, 2014 at 12:51:58PM +0100, Arnd Bergmann wrote: > > > This series adds support for the SoCFPGA L3 NIC. As the memory range has > > > a lot of holes, where you can not read from, syscon can not be used for > > > this IP core. Instead add a new driver, that knows about all the allowed > > > ranges and guards the access via regmap. > > > > What is an L3 NIC? > > Fron the SoCFPGA manual: > > " > The hard processor system (HPS) level 3 (L3) interconnect and level 4 > (L4) peripheral buses are implemented with the ARM CoreLinkTM Network > Interconnect (NIC-301). The NIC-301 provides a foundation for a > high-performance HPS interconnect based on the ARM Advanced > Microcontroller Bus Architecture (AMBA) Advanced eXtensible Interface > (AXI), Advanced High-Performance Bus (AHBTM), and Advanced Peripheral > Bus (APBTM) protocols. The L3 interconnect implements a multilayer, > nonblocking architecture that supports multiple simultaneous > transactions between masters and slaves, including the Cortex-A9 > microprocessor unit (MPU) subsystem. The interconnect provides five > independent L4 buses to access control and status registers (CSRs) of > peripherals, managers, and memory controllers Related Information > http://infocenter.arm.com/ Additional information is available in the > AMBA Network Interconnect (NIC-301) Technical Reference Manual, revision > r2p3, which you can download from the ARM info center website. Please put something like this in the introductory mail and later into the pull request then. If the l3-nic is an ARM nic-301, shouldn't the compatible string be "arm,nic-301"? Arnd