From mboxrd@z Thu Jan 1 00:00:00 1970 From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= Subject: Re: [PATCH v2 14/18] ARM: Add STM32 family machine Date: Fri, 20 Feb 2015 21:00:19 +0100 Message-ID: <20150220200019.GU19388@pengutronix.de> References: <1424455277-29983-1-git-send-email-mcoquelin.stm32@gmail.com> <1424455277-29983-15-git-send-email-mcoquelin.stm32@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: <1424455277-29983-15-git-send-email-mcoquelin.stm32@gmail.com> Sender: linux-doc-owner@vger.kernel.org To: Maxime Coquelin Cc: afaerber@suse.de, geert@linux-m68k.org, Rob Herring , Philipp Zabel , Jonathan Corbet , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , 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 , Rust List-Id: linux-api@vger.kernel.org Hello, On Fri, Feb 20, 2015 at 07:01:13PM +0100, Maxime Coquelin wrote: > STMicrolectronics's STM32 series is a family of Cortex-M > microcontrollers. It is used in various applications, and > proposes a wide range of peripherals. >=20 > 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 | 31 ++++++++++++++++= +++++++++ > 7 files changed, 109 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 >=20 > 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 > + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D > + > +Introduction > +------------ > + > + The STMicroelectronics family of Cortex-M based MCUs are supported= by the > + 'STM32' platform of ARM Linux. Currently only the STM32F429 is sup= ported. > + > + > +Configuration > +------------- > + > + A generic configuration is provided for STM32 family, and can be u= sed as the > + default by > + make stm32_defconfig > + > +Layout > +------ > + > + All the files for multiple machine families are located in the pla= tform code > + contained in arch/arm/mach-stm32 > + > + There is a generic board board-dt.c in the mach folder which suppo= rt > + Flattened Device Tree, which means, It works with any compatible b= oard with > + Device Trees. > + > + > +Document Author > +--------------- > + > + Maxime Coquelin > diff --git a/Documentation/arm/stm32/stm32f429-overview.txt b/Documen= tation/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 > + =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > + > + 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?e= cmp=3Dstm32f429-439_pron_pr-ces2014_nov2013 > + > + Document Author > + --------------- > + Maxime Coquelin > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index 97d07ed..cfd9532 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) > =20 > +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 ARMV7M_SYSTICK > + select COMMON_CLK > + select CPU_V7M > + select GENERIC_CLOCKEVENTS > + select NO_DMA > + select NO_IOPORT_MAP > + select SPARSE_IRQ > + select USE_OF Please sort this list alphabetically. > + help > + Support for STMicorelectronics STM32 processors. > + > endchoice > =20 > 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-$(CONFIG_ARCH_SHMOBILE) +=3D shmobile > machine-$(CONFIG_ARCH_SIRF) +=3D prima2 > machine-$(CONFIG_ARCH_SOCFPGA) +=3D socfpga > machine-$(CONFIG_ARCH_STI) +=3D sti > +machine-$(CONFIG_ARCH_STM32) +=3D stm32 > machine-$(CONFIG_ARCH_SUNXI) +=3D sunxi > machine-$(CONFIG_ARCH_TEGRA) +=3D tegra > machine-$(CONFIG_ARCH_U300) +=3D u300 > diff --git a/arch/arm/mach-stm32/Makefile b/arch/arm/mach-stm32/Makef= ile > new file mode 100644 > index 0000000..bd0b7b5 > --- /dev/null > +++ b/arch/arm/mach-stm32/Makefile > @@ -0,0 +1 @@ > +obj-y +=3D 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 Maybe note there why this file exists and can be empty. Feel free to copy the content of efm32's Makefile.boot. > diff --git a/arch/arm/mach-stm32/board-dt.c b/arch/arm/mach-stm32/boa= rd-dt.c > new file mode 100644 > index 0000000..1d681b3 > --- /dev/null > +++ b/arch/arm/mach-stm32/board-dt.c > @@ -0,0 +1,31 @@ > +/* > + * Copyright (C) Maxime Coquelin 2015 > + * Author: Maxime Coquelin > + * License terms: GNU General Public License (GPL), version 2 > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > + > +static const char *const stm32_compat[] __initconst =3D { > + "st,stm32f429", > + NULL > +}; > + > +static void __init stm32_timer_init(void) > +{ > + of_clk_init(NULL); > + reset_controller_of_init(); > + clocksource_of_init(); Hmm, if reset_controller_of_init was called automatically you wouldn't need that, right? Maybe arange for that instead? Best regards Uwe --=20 Pengutronix e.K. | Uwe Kleine-K=F6nig = | Industrial Linux Solutions | http://www.pengutronix.de/= |