From patchwork Thu Feb 12 17:46:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Coquelin X-Patchwork-Id: 439324 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id E9E6F140182 for ; Fri, 13 Feb 2015 06:41:40 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751500AbbBLTlJ (ORCPT ); Thu, 12 Feb 2015 14:41:09 -0500 Received: from mail-wi0-f195.google.com ([209.85.212.195]:34815 "EHLO mail-wi0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751317AbbBLTlH (ORCPT ); Thu, 12 Feb 2015 14:41:07 -0500 Received: by mail-wi0-f195.google.com with SMTP id bs8so2844949wib.2; Thu, 12 Feb 2015 11:41:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:subject:date:message-id:in-reply-to:references; bh=5An5s5ih9y8X7iADOYeLNE3wMdmPXA8F4xunC3OBrk8=; b=k6uN1DAgGaDSRDJuSsIKPmQW69z9H7jNabygE9UVJLMR/1LQoP6U0R4G1q1ASpYwkJ TyKNEJSZJMJfzoVdwU9FK7xfAI3O5F/gG1FozZLDOoEKtoxyO3UukTB+va+nRIpUz452 ckv5CIX4wFD2Fe9xZGUpaivDsddi/tevUMRtC7RVsfh+tC5yWPVwz69BzRVY88wb+AhV Ty/27FcYdIJ7dqJNRbaY8vqzxuyYBUbEGw6CK2QdVUy2fw2Yyxx8OV5ghg5250jZzPXy n5agkOJsAf1L/eT8vJD3HB/YjFg3G+Y5Q7/haU7/uw4fxb1hxxVQijIOjgU0kta6BCWi oJ4w== X-Received: by 10.180.78.4 with SMTP id x4mr8482386wiw.86.1423763202295; Thu, 12 Feb 2015 09:46:42 -0800 (PST) Received: from lmecul0520.st.com. (157.162.113.78.rev.sfr.net. [78.113.162.157]) by mx.google.com with ESMTPSA id ka1sm6614924wjc.2.2015.02.12.09.46.39 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 12 Feb 2015 09:46:41 -0800 (PST) From: Maxime Coquelin To: Jonathan Corbet , Maxime Coquelin , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Philipp Zabel , Russell King , Daniel Lezcano , Thomas Gleixner , Linus Walleij , Greg Kroah-Hartman , Jiri Slaby , Arnd Bergmann , Andrew Morton , "David S. Miller" , Mauro Carvalho Chehab , Joe Perches , Antti Palosaari , Tejun Heo , Will Deacon , Nikolay Borisov , Rusty Russell , Kees Cook , Michal Marek , linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-serial@vger.kernel.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org Subject: [PATCH 10/14] ARM: Add STM32 family machine Date: Thu, 12 Feb 2015 18:46:00 +0100 Message-Id: <1423763164-5606-11-git-send-email-mcoquelin.stm32@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1423763164-5606-1-git-send-email-mcoquelin.stm32@gmail.com> References: <1423763164-5606-1-git-send-email-mcoquelin.stm32@gmail.com> Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org STMicrolectronics's STM32 series is a family of Cortex-M microcontrollers. It is used in various applications, and proposes a wide range of peripherals. Signed-off-by: Maxime Coquelin --- Documentation/arm/stm32/overview.txt | 32 ++++++++++++++++++++++++++ Documentation/arm/stm32/stm32f429-overview.txt | 22 ++++++++++++++++++ arch/arm/Kconfig | 22 ++++++++++++++++++ arch/arm/Makefile | 1 + arch/arm/mach-stm32/Makefile | 1 + arch/arm/mach-stm32/Makefile.boot | 0 arch/arm/mach-stm32/board-dt.c | 19 +++++++++++++++ 7 files changed, 97 insertions(+) create mode 100644 Documentation/arm/stm32/overview.txt create mode 100644 Documentation/arm/stm32/stm32f429-overview.txt create mode 100644 arch/arm/mach-stm32/Makefile create mode 100644 arch/arm/mach-stm32/Makefile.boot create mode 100644 arch/arm/mach-stm32/board-dt.c diff --git a/Documentation/arm/stm32/overview.txt b/Documentation/arm/stm32/overview.txt new file mode 100644 index 0000000..d8bf6bb --- /dev/null +++ b/Documentation/arm/stm32/overview.txt @@ -0,0 +1,32 @@ + STM32 ARM Linux Overview + ========================== + +Introduction +------------ + + The STMicroelectronics family of Cortex-M based MCUs are supported by the + 'STM32' platform of ARM Linux. Currently only the STM32F429 is supported. + + +Configuration +------------- + + A generic configuration is provided for STM32 family, and can be used as the + default by + make stm32_defconfig + +Layout +------ + + All the files for multiple machine families are located in the platform code + contained in arch/arm/mach-stm32 + + There is a generic board board-dt.c in the mach folder which support + Flattened Device Tree, which means, It works with any compatible board with + Device Trees. + + +Document Author +--------------- + + Maxime Coquelin diff --git a/Documentation/arm/stm32/stm32f429-overview.txt b/Documentation/arm/stm32/stm32f429-overview.txt new file mode 100644 index 0000000..5206822 --- /dev/null +++ b/Documentation/arm/stm32/stm32f429-overview.txt @@ -0,0 +1,22 @@ + STM32F429 Overview + ================== + + Introduction + ------------ + The STM32F429 is a Cortex-M4 MCU aimed at various applications. + It features: + - ARM Cortex-M4 up to 180MHz with FPU + - 2MB internal Flash Memory + - External memory support through FMC controller (PSRAM, SDRAM, NOR, NAND) + - I2C, SPI, SAI, CAN, USB OTG, Ethernet controllers + - LCD controller & Camera interface + - Cryptographic processor + + Resources + --------- + Datasheet and reference manual are publicly available on ST website: + - http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1577/LN1806?ecmp=stm32f429-439_pron_pr-ces2014_nov2013 + + Document Author + --------------- + Maxime Coquelin diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 97d07ed..fd803a4 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -774,6 +774,28 @@ config ARCH_OMAP1 help Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx) +config ARCH_STM32 + bool "STMicrolectronics STM32" + depends on !MMU + select ARCH_REQUIRE_GPIOLIB + select ARM_NVIC + select AUTO_ZRELADDR + select ARCH_HAS_RESET_CONTROLLER + select RESET_CONTROLLER + select PINCTRL + select PINCTRL_STM32 + select CLKSRC_OF + select ARM_SYSTEM_TIMER + select COMMON_CLK + select CPU_V7M + select GENERIC_CLOCKEVENTS + select NO_DMA + select NO_IOPORT_MAP + select SPARSE_IRQ + select USE_OF + help + Support for STMicorelectronics STM32 processors. + endchoice menu "Multiple platform selection" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index c1785ee..7d00659 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -196,6 +196,7 @@ machine-$(CONFIG_ARCH_SHMOBILE) += shmobile machine-$(CONFIG_ARCH_SIRF) += prima2 machine-$(CONFIG_ARCH_SOCFPGA) += socfpga machine-$(CONFIG_ARCH_STI) += sti +machine-$(CONFIG_ARCH_STM32) += stm32 machine-$(CONFIG_ARCH_SUNXI) += sunxi machine-$(CONFIG_ARCH_TEGRA) += tegra machine-$(CONFIG_ARCH_U300) += u300 diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makefile new file mode 100644 index 0000000..bd0b7b5 --- /dev/null +++ b/arch/arm/mach-stm32/Makefile @@ -0,0 +1 @@ +obj-y += board-dt.o diff --git a/arch/arm/mach-stm32/Makefile.boot b/arch/arm/mach-stm32/Makefile.boot new file mode 100644 index 0000000..e69de29 diff --git a/arch/arm/mach-stm32/board-dt.c b/arch/arm/mach-stm32/board-dt.c new file mode 100644 index 0000000..f2ad772 --- /dev/null +++ b/arch/arm/mach-stm32/board-dt.c @@ -0,0 +1,19 @@ +/* + * Copyright (C) Maxime Coquelin 2015 + * Author: Maxime Coquelin + * License terms: GNU General Public License (GPL), version 2 + */ + +#include +#include +#include + +static const char *const stm32_compat[] __initconst = { + "st,stm32f429", + NULL +}; + +DT_MACHINE_START(STM32DT, "STM32 (Device Tree Support)") + .dt_compat = stm32_compat, + .restart = armv7m_restart, +MACHINE_END