On 11/7/13 2:41 AM, Haojian Zhuang wrote:
> Add board support with device tree for Hisilicon Hi3620 SoC platform.
>
> Changelog:
> v11:
> 1. Add comments for iotable.
>
> v10:
> 1. Add .map_io() & debug_ll_io_init() back. Since debug_ll_io_init() is
> only called if .map_io() isn't assigned. Use .map_io() to setup static
> IO mapping that is used in clock driver.
>
> 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@xxxxxxxxxx>
> ---
> .../bindings/arm/hisilicon/hisilicon.txt | 10 ++++
> arch/arm/Kconfig | 2 +
> arch/arm/Makefile | 1 +
> arch/arm/mach-hi3xxx/Kconfig | 12 +++++
> arch/arm/mach-hi3xxx/Makefile | 5 ++
> arch/arm/mach-hi3xxx/hi3xxx.c | 60 ++++++++++++++++++++++
> 6 files changed, 90 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 3f7714d..0118443 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -946,6 +946,8 @@ 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 a37a50f..23fb0b0 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -155,6 +155,7 @@ machine-$(CONFIG_ARCH_EBSA110) += ebsa110
> machine-$(CONFIG_ARCH_EP93XX) += ep93xx
> machine-$(CONFIG_ARCH_EXYNOS) += exynos
> machine-$(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..68bd26c
> --- /dev/null
> +++ b/arch/arm/mach-hi3xxx/Kconfig
> @@ -0,0 +1,12 @@
> +config ARCH_HI3xxx
> + bool "Hisilicon Hi36xx/Hi37xx family" if ARCH_MULTI_V7
> + select ARM_AMBA
> + select ARM_GIC
> + select ARM_TIMER_SP804
> + select CACHE_L2X0
> + select CLKSRC_OF
I think you need COMMON_CLK here.
> + select GENERIC_CLOCKEVENTS
> + select PINCTRL
> + select PINCTRL_SINGLE
> + 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..925af13
> --- /dev/null
> +++ b/arch/arm/mach-hi3xxx/hi3xxx.c
> @@ -0,0 +1,60 @@
> +/*
> + * (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@xxxxxxxxxx>
> + *
> + * 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>
> +
> +/*
> + * This table is only for optimization. Since ioremap() could always share
> + * the same mapping if it's defined as static IO mapping.
> + *
> + * Without this table, system could also work. The cost is some virtual address
> + * spaces wasted since ioremap() may be called multi times for the same
> + * IO space.
> + */
> +static struct map_desc hi3620_io_desc[] __initdata = {
> + {
> + .pfn = __phys_to_pfn(0xfc802000),
> + .virtual = 0xfe802000,
> + .length = 0x1000,
> + .type = MT_DEVICE,
> + },
> +};
> +
> +static void __init hi3620_map_io(void)
> +{
> + debug_ll_io_init();
> + iotable_init(hi3620_io_desc, ARRAY_SIZE(hi3620_io_desc));
> +}
> +
> +static void __init hi3xxx_timer_init(void)
> +{
> + of_clk_init(NULL);
> + clocksource_of_init();
> +}
Once you have COMMON_CLK, then this function can go away.
> +
> +static const char *hi3xxx_compat[] __initdata = {
> + "hisilicon,hi3620-hi4511",
> + NULL,
> +};
> +
> +DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)")
> + .map_io = hi3620_map_io,
> + .init_time = hi3xxx_timer_init,
.init_time can go away if you have COMMON_CLK.
Dinh
> + .dt_compat = hi3xxx_compat,
> +MACHINE_END
--
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