2015-02-20 21:00 GMT+01:00 Uwe Kleine-K?nig [off-list ref]:
Hello,
On Fri, Feb 20, 2015 at 07:01:13PM +0100, Maxime Coquelin wrote:
quoted
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 <mcoquelin.stm32@gmail.com>
---
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
<snip>
quoted
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)
+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.
Ok, I will do for v3.
quoted
+ 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
Maybe note there why this file exists and can be empty. Feel free to
copy the content of efm32's Makefile.boot.
Ok, I will copy efm32's Makefile.boot content.
Do you know why your patch has not been applied yet?
quoted
diff --git a/arch/arm/mach-stm32/board-dt.c b/arch/arm/mach-stm32/board-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 <mcoquelin.stm32@gmail.com>
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/clocksource.h>
+#include <linux/reset-controller.h>
+#include <asm/v7m.h>
+#include <asm/mach/arch.h>
+
+static const char *const stm32_compat[] __initconst = {
+ "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?
This is what I did in the v1:
http://marc.info/?l=linux-arm-kernel&m=142376341008550&w=2
But Rob advised to put it elsewhere.
Thanks,
Maxime
Best regards
Uwe
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