[PATCH] ARM: SPEAr600: Add device-tree support to SPEAr600 boards

Wed Mar 14 04:48:38 EDT 2012

On 15:47 Tue 13 Mar     , Stefan Roese wrote:
> This patch adds a generic target for SPEAr600 board that can be
> configured via the device-tree. Currently only interrupts are
> configured via device-tree. Other peripheral devices (e.g.
> ethernet, I2C, SMI flash, FSMC NAND flash etc) will follow in
> later patches.
> 
> Only the spear600-evb is currently supported. Other SPEAr600
> based boards will follow later.
> 
> Signed-off-by: Stefan Roese <sr at denx.de>
> Cc: Viresh Kumar <viresh.kumar at st.com>
> ---
>  Documentation/devicetree/bindings/arm/spear.txt |    6 ++
>  arch/arm/boot/dts/spear600-evb.dts              |   23 +++++++
>  arch/arm/boot/dts/spear600.dtsi                 |   49 +++++++++++++++
>  arch/arm/mach-spear6xx/Kconfig                  |    7 +++
>  arch/arm/mach-spear6xx/Makefile                 |    1 +
>  arch/arm/mach-spear6xx/board-dt.c               |   75 +++++++++++++++++++++++
>  6 files changed, 161 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/spear.txt
>  create mode 100644 arch/arm/boot/dts/spear600-evb.dts
>  create mode 100644 arch/arm/boot/dts/spear600.dtsi
>  create mode 100644 arch/arm/mach-spear6xx/board-dt.c
> 
> diff --git a/Documentation/devicetree/bindings/arm/spear.txt b/Documentation/devicetree/bindings/arm/spear.txt
> new file mode 100644
> index 0000000..8e9f83e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/spear.txt
> @@ -0,0 +1,6 @@
> +ST SPEAr Platforms Device Tree Bindings
> +---------------------------------------
> +
> +SPEAr600 EVB (Evaluation Board)
> +Required root node properties:
> +    - compatible = "st,spear600-evb";
> diff --git a/arch/arm/boot/dts/spear600-evb.dts b/arch/arm/boot/dts/spear600-evb.dts
> new file mode 100644
> index 0000000..f92d099
> --- /dev/null
> +++ b/arch/arm/boot/dts/spear600-evb.dts
> @@ -0,0 +1,23 @@
> +/*
> + * Copyright 2011 Freescale Semiconductor, Inc.
> + * Copyright 2011 Linaro Ltd.
freescale for a ST SoC ??
> + *
> + * Copyright 2012 Stefan Roese <sr at denx.de>
> + *
> + * The code contained herein is licensed under the GNU General Public
> + * License. You may obtain a copy of the GNU General Public License
> + * Version 2 or later at the following locations:
> + *
> + * http://www.opensource.org/licenses/gpl-license.html
> + * http://www.gnu.org/copyleft/gpl.html
> + */
> +
> +/dts-v1/;
> +/include/ "spear600.dtsi"
> +
> +/ {
> +	model = "ST SPEAr600 Evaluation Board";
> +	compatible = "st,spear600-evb";
put the soc too
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +};

put the board memory
> diff --git a/arch/arm/boot/dts/spear600.dtsi b/arch/arm/boot/dts/spear600.dtsi
> new file mode 100644
> index 0000000..82b086d
> --- /dev/null
> +++ b/arch/arm/boot/dts/spear600.dtsi
> @@ -0,0 +1,49 @@
> +/*
> + * Copyright 2011 Freescale Semiconductor, Inc.
> + * Copyright 2011 Linaro Ltd.
> + *
> + * Copyright 2012 Stefan Roese <sr at denx.de>
> + *
> + * The code contained herein is licensed under the GNU General Public
> + * License. You may obtain a copy of the GNU General Public License
> + * Version 2 or later at the following locations:
> + *
> + * http://www.opensource.org/licenses/gpl-license.html
> + * http://www.gnu.org/copyleft/gpl.html
> + */
> +
> +/include/ "skeleton.dtsi"
> +
> +/ {
> +	cpus {
> +		cpu at 0 {
> +			compatible = "arm,arm926ejs";
> +		};
> +	};
> +
> +	memory {
> +		device_type = "memory";
> +		reg = <0 0>; /* Filled by U-Boot */
here the max and do not expect the bootloader to do it
put the min of the board
> +	};
> +
> +	soc {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		compatible = "simple-bus";
> +		ranges;
> +
> +		vic0: interrupt-controller at f1100000 {
> +			compatible = "arm,pl190-vic";
> +			interrupt-controller;
> +			reg = <0xf1100000 0x1000>;
> +			#interrupt-cells = <1>;
> +		};
> +
> +		vic1: interrupt-controller at f1000000 {
> +			compatible = "arm,pl190-vic";
> +			interrupt-controller;
> +			reg = <0xf1000000 0x1000>;
> +			#interrupt-cells = <1>;
> +		};
> +	};
> +};
> diff --git a/arch/arm/mach-spear6xx/Kconfig b/arch/arm/mach-spear6xx/Kconfig
> index ff4ae5b..7777f72 100644
> --- a/arch/arm/mach-spear6xx/Kconfig
> +++ b/arch/arm/mach-spear6xx/Kconfig
> @@ -11,6 +11,13 @@ config BOARD_SPEAR600_EVB
>  	help
>  	  Supports ST SPEAr600 Evaluation Board
>  
> +config BOARD_SPEAR600_DT
> +	bool "SPEAr600 generic board configured via device-tree"
> +	select MACH_SPEAR600
> +	select USE_OF
> +	help
> +	  Supports ST SPEAr600 boards configured via the device-tree
> +
>  endmenu
>  
>  config MACH_SPEAR600
> diff --git a/arch/arm/mach-spear6xx/Makefile b/arch/arm/mach-spear6xx/Makefile
> index cc1a4d8..e2d79b8 100644
> --- a/arch/arm/mach-spear6xx/Makefile
> +++ b/arch/arm/mach-spear6xx/Makefile
> @@ -10,3 +10,4 @@ obj-$(CONFIG_MACH_SPEAR600) += spear600.o
>  
>  # spear600 boards files
>  obj-$(CONFIG_BOARD_SPEAR600_EVB) += spear600_evb.o
> +obj-$(CONFIG_BOARD_SPEAR600_DT) += board-dt.o
> diff --git a/arch/arm/mach-spear6xx/board-dt.c b/arch/arm/mach-spear6xx/board-dt.c
> new file mode 100644
> index 0000000..ee4ff33
> --- /dev/null
> +++ b/arch/arm/mach-spear6xx/board-dt.c
> @@ -0,0 +1,75 @@
> +/*
> + * arch/arm/mach-spear6xx/board-dt.c
> + *
> + * Generic SPEAr600 platform support
> + *
> + * Copyright (C) 2009 ST Microelectronics
> + * Viresh Kumar<viresh.kumar at st.com>
> + *
> + * Copyright 2012 Stefan Roese <sr at denx.de>
> + *
> + * This file is licensed under the terms of the GNU General Public
> + * License version 2. This program is licensed "as is" without any
> + * warranty of any kind, whether express or implied.
> + */
> +
> +#include <linux/of.h>
> +#include <linux/of_irq.h>
> +#include <linux/of_platform.h>
> +#include <linux/of_address.h>
> +#include <asm/hardware/vic.h>
> +#include <asm/mach/arch.h>
> +#include <asm/mach-types.h>
> +#include <mach/generic.h>
> +#include <mach/hardware.h>
> +
> +static struct amba_device *amba_devs[] __initdata = {
> +	&gpio_device[0],
> +	&gpio_device[1],
> +	&gpio_device[2],
> +	&uart_device[0],
> +	&uart_device[1],
> +};
there is no bining?
> +
> +static struct platform_device *plat_devs[] __initdata = {
> +};
> +
> +static void __init spear600_dt_init(void)
> +{
> +	unsigned int i;
> +
> +	/* call spear600 machine init function */
> +	spear600_init();
> +
> +	/* Add Platform Devices */
> +	platform_add_devices(plat_devs, ARRAY_SIZE(plat_devs));
> +
> +	/* Add Amba Devices */
> +	for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
> +		amba_device_register(amba_devs[i], &iomem_resource);
> +}
> +
> +static const char *spear600_dt_board_compat[] = {
> +	"st,spear600-evb",
> +	NULL
> +};
put the soc instead of the list of bord

Best Regards,
J.