[v6,3/4] ARM: hi3xxx: add board support with device tree

Add board support with device tree for Hisilicon Hi36xx/Hi37xx platform.

Changelog:
v3:
1. Remove .map_io() in DT machine descriptor. Since debug_ll_io_init()
is called by default.
2. Remove .init_machine() in DT machine descriptor. Since
of_platform_populate() is called by default in DT mode.

v2:
1. Remove .init_irq() in DT machine descriptor. Since irqchip_init()
is called by default in DT mode.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
---
 .../bindings/arm/hisilicon/hisilicon.txt           | 10 ++++++
 arch/arm/Kconfig                                   |  2 ++
 arch/arm/Makefile                                  |  1 +
 arch/arm/mach-hi3xxx/Kconfig                       | 13 ++++++++
 arch/arm/mach-hi3xxx/Makefile                      |  5 +++
 arch/arm/mach-hi3xxx/hi3xxx.c                      | 36 ++++++++++++++++++++++
 6 files changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
 create mode 100644 arch/arm/mach-hi3xxx/Kconfig
 create mode 100644 arch/arm/mach-hi3xxx/Makefile
 create mode 100644 arch/arm/mach-hi3xxx/hi3xxx.c

On Fri, Jul 26, 2013 at 05:32:14AM +0100, Haojian Zhuang wrote:
> Add board support with device tree for Hisilicon Hi36xx/Hi37xx platform.
> 
> Changelog:
> v3:
> 1. Remove .map_io() in DT machine descriptor. Since debug_ll_io_init()
> is called by default.
> 2. Remove .init_machine() in DT machine descriptor. Since
> of_platform_populate() is called by default in DT mode.
> 
> v2:
> 1. Remove .init_irq() in DT machine descriptor. Since irqchip_init()
> is called by default in DT mode.
> 
> Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
> ---
>  .../bindings/arm/hisilicon/hisilicon.txt           | 10 ++++++
>  arch/arm/Kconfig                                   |  2 ++
>  arch/arm/Makefile                                  |  1 +
>  arch/arm/mach-hi3xxx/Kconfig                       | 13 ++++++++
>  arch/arm/mach-hi3xxx/Makefile                      |  5 +++
>  arch/arm/mach-hi3xxx/hi3xxx.c                      | 36 ++++++++++++++++++++++
>  6 files changed, 67 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
>  create mode 100644 arch/arm/mach-hi3xxx/Kconfig
>  create mode 100644 arch/arm/mach-hi3xxx/Makefile
>  create mode 100644 arch/arm/mach-hi3xxx/hi3xxx.c
> 
> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
> new file mode 100644
> index 0000000..3be60c8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
> @@ -0,0 +1,10 @@
> +Hisilicon Platforms Device Tree Bindings
> +----------------------------------------------------
> +
> +Hi3716 Development Board
> +Required root node properties:
> +	- compatible = "hisilicon,hi3716-dkb";
> +
> +Hi4511 Board
> +Required root node properties:
> +	- compatible = "hisilicon,hi3620-hi4511";
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index ba412e0..29e119d 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -944,6 +944,8 @@ source "arch/arm/mach-footbridge/Kconfig"
>  
>  source "arch/arm/mach-gemini/Kconfig"
>  
> +source "arch/arm/mach-hi3xxx/Kconfig"
> +
>  source "arch/arm/mach-highbank/Kconfig"
>  
>  source "arch/arm/mach-integrator/Kconfig"
> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> index c0ac0f5..bc69205 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -154,6 +154,7 @@ machine-$(CONFIG_ARCH_DOVE)		+= dove
>  machine-$(CONFIG_ARCH_EBSA110)		+= ebsa110
>  machine-$(CONFIG_ARCH_EP93XX)		+= ep93xx
>  machine-$(CONFIG_ARCH_GEMINI)		+= gemini
> +machine-$(CONFIG_ARCH_HI3xxx)		+= hi3xxx
>  machine-$(CONFIG_ARCH_HIGHBANK)		+= highbank
>  machine-$(CONFIG_ARCH_INTEGRATOR)	+= integrator
>  machine-$(CONFIG_ARCH_IOP13XX)		+= iop13xx
> diff --git a/arch/arm/mach-hi3xxx/Kconfig b/arch/arm/mach-hi3xxx/Kconfig
> new file mode 100644
> index 0000000..a991dee
> --- /dev/null
> +++ b/arch/arm/mach-hi3xxx/Kconfig
> @@ -0,0 +1,13 @@
> +config ARCH_HI3xxx
> +	bool "Hisilicon Hi36xx/Hi37xx family" if ARCH_MULTI_V7
> +	select ARM_AMBA
> +	select ARM_GIC
> +	select CACHE_L2X0
> +	select CACHE_PL310
> +	select CLKSRC_OF
> +	select PINCTRL
> +	select PINCTRL_SINGLE
> +	select SERIAL_AMBA_PL011
> +	select SERIAL_AMBA_PL011_CONSOLE
> +	help
> +	  Support for Hisilicon Hi36xx/Hi37xx processor family
> diff --git a/arch/arm/mach-hi3xxx/Makefile b/arch/arm/mach-hi3xxx/Makefile
> new file mode 100644
> index 0000000..d68ebb3
> --- /dev/null
> +++ b/arch/arm/mach-hi3xxx/Makefile
> @@ -0,0 +1,5 @@
> +#
> +# Makefile for Hisilicon Hi36xx/Hi37xx processors line
> +#
> +
> +obj-y	+= hi3xxx.o
> diff --git a/arch/arm/mach-hi3xxx/hi3xxx.c b/arch/arm/mach-hi3xxx/hi3xxx.c
> new file mode 100644
> index 0000000..e7c54bc
> --- /dev/null
> +++ b/arch/arm/mach-hi3xxx/hi3xxx.c
> @@ -0,0 +1,36 @@
> +/*
> + * (Hisilicon's Hi36xx/Hi37xx SoC based) flattened device tree enabled machine
> + *
> + * Copyright (c) 2012-2013 Hisilicon Ltd.
> + * Copyright (c) 2012-2013 Linaro Ltd.
> + *
> + * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> +*/
> +
> +#include <linux/clk-provider.h>
> +#include <linux/clocksource.h>
> +#include <linux/irqchip.h>
> +#include <linux/of_platform.h>
> +
> +#include <asm/mach/arch.h>
> +#include <asm/mach/map.h>
> +
> +static void __init hi3xxx_timer_init(void)
> +{
> +	of_clk_init(NULL);
> +	clocksource_of_init();
> +}

It's a shame there doesn't seem to be an of_clk_init(NULL) in common
code. That would make this entire machine description unnecessary...

Thanks,
Mark.

> +
> +static const char *hs_compat[] __initdata = {
> +	"hisilicon,hi3620-hi4511",
> +	NULL,
> +};
> +
> +DT_MACHINE_START(HI3xxx, "Hisilicon Hi36xx/Hi37xx (Flattened Device Tree)")
> +	.init_time	= hi3xxx_timer_init,
> +	.dt_compat	= hs_compat,
> +MACHINE_END
> -- 
> 1.8.1.2
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>

Hi,

On Fri, Jul 26, 2013 at 12:32:14PM +0800, Haojian Zhuang wrote:
> Add board support with device tree for Hisilicon Hi36xx/Hi37xx platform.

How about a defconfig for build coverage, or enabling this platform in
multi_v7_defconfig?

> diff --git a/arch/arm/mach-hi3xxx/Kconfig b/arch/arm/mach-hi3xxx/Kconfig
> new file mode 100644
> index 0000000..a991dee
> --- /dev/null
> +++ b/arch/arm/mach-hi3xxx/Kconfig
> @@ -0,0 +1,13 @@
> +config ARCH_HI3xxx
> +	bool "Hisilicon Hi36xx/Hi37xx family" if ARCH_MULTI_V7
> +	select ARM_AMBA
> +	select ARM_GIC
> +	select CACHE_L2X0
> +	select CACHE_PL310

No other platforms select CACHE_PL310 even if they have them.

> +	select CLKSRC_OF
> +	select PINCTRL
> +	select PINCTRL_SINGLE
> +	select SERIAL_AMBA_PL011
> +	select SERIAL_AMBA_PL011_CONSOLE

It's not common to select the serial drivers here, only a couple of other
platforms do.



-Olof