Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755434AbaKEQBn (ORCPT ); Wed, 5 Nov 2014 11:01:43 -0500 Received: from down.free-electrons.com ([37.187.137.238]:42976 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755130AbaKEQBc (ORCPT ); Wed, 5 Nov 2014 11:01:32 -0500 From: Boris Brezillon To: Samuel Ortiz , Lee Jones , Nicolas Ferre , Jean-Christophe Plagniol-Villard , Alexandre Belloni , Andrew Victor , Jean-Jacques Hiblot Cc: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Boris Brezillon Subject: [PATCH v2 00/11] memory: add Atmel EBI (External Bus Interface) driver Date: Wed, 5 Nov 2014 17:01:16 +0100 Message-Id: <1415203287-21517-1-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The EBI (External Bus Interface) is used to access external peripherals (NOR, SRAM, NAND, and other specific devices like ethernet controllers). Each device is assigned a CS line and an address range and can have its own configuration (timings, access mode, bus width, ...). This driver provides a generic DT binding to configure a device according to its requirements. For specific device controllers (like the NAND one) the SMC timings should be configured by the controller driver through the matrix and smc syscon regmaps. The first 4 patches introduce 2 syscon devices needed to configure the EBI bus, patch 5 and 6 adds support for the EBI bus, and the remaining patches declares the EBI related nodes in sama5d3 dts[i] files. The converters approach I suggested to Jean-Jacques has been dropped and only SMC specific timing properties are supported. Arnd, you've commented the first version of this driver (IIRC, you focused on the DT binding part), could you give your feedback on this version (I based the new DT binding on TI's aemif driver). Changes since v1: - almost everything :-) Boris Brezillon (11): mfd: syscon: Add atmel-matrix registers definition mfd: syscon: Add Atmel Matrix bus DT binding documentation mfd: syscon: Add atmel-smc registers definition mfd: syscon: Add Atmel SMC binding doc memory: add Atmel EBI (External Bus Interface) driver memory: atmel-ebi: add DT bindings documentation ARM: at91: select ATMEL_EBI when compiling a kernel for at91sam9 or sama5d3 ARM: at91/dt: add HSMC (Static Memory Controller) node in sama5d3 dtsi ARM: at91/dt: add matrix node in sama5d3 dtsi ARM: at91/dt: add EBI (External Bus Interface) node in sama5d3 dtsi ARM: at91/dt: add NOR definition in sama5d3xcm dtsi .../bindings/memory-controllers/atmel-ebi.txt | 153 +++++ .../devicetree/bindings/mfd/atmel-matrix.txt | 24 + .../devicetree/bindings/mfd/atmel-smc.txt | 19 + arch/arm/boot/dts/sama5d3.dtsi | 93 ++++ arch/arm/boot/dts/sama5d3xcm.dtsi | 34 ++ arch/arm/mach-at91/Kconfig | 2 + drivers/memory/Kconfig | 11 + drivers/memory/Makefile | 1 + drivers/memory/atmel-ebi.c | 615 +++++++++++++++++++++ include/linux/mfd/syscon/atmel-matrix.h | 114 ++++ include/linux/mfd/syscon/atmel-smc.h | 60 ++ 11 files changed, 1126 insertions(+) create mode 100644 Documentation/devicetree/bindings/memory-controllers/atmel-ebi.txt create mode 100644 Documentation/devicetree/bindings/mfd/atmel-matrix.txt create mode 100644 Documentation/devicetree/bindings/mfd/atmel-smc.txt create mode 100644 drivers/memory/atmel-ebi.c create mode 100644 include/linux/mfd/syscon/atmel-matrix.h create mode 100644 include/linux/mfd/syscon/atmel-smc.h -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/