linux-kernel - Re: [PATCH 5/5] ARM: davinci: da850, omapl138: introduce new board-omapl138-heliosv1

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Message-ID: <20110818220224.GE21064@legolas.emea.dhcp.ti.com>
Date:	Fri, 19 Aug 2011 01:02:25 +0300
From:	Felipe Balbi <balbi@...com>
To:	Ben Gardiner <bengardiner@...ometrics.ca>
Cc:	Sekhar Nori <nsekhar@...com>,
	davinci-linux-open-source@...ux.davincidsp.com,
	James Nuss <jamesnuss@...ometrics.ca>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] ARM: davinci: da850, omapl138: introduce new
 board-omapl138-heliosv1

Hi,

On Thu, Aug 18, 2011 at 05:50:51PM -0400, Ben Gardiner wrote:
> Add support for the Nanometrics Helios Platform V1 Hardware. Initially
> support includes only serial console and watchdog support.
> 
> Signed-off-by: Ben Gardiner <bengardiner@...ometrics.ca>
> Reviewed-by: James Nuss <jamesnuss@...ometrics.ca>
> ---
>  arch/arm/mach-davinci/Kconfig                   |    9 ++++
>  arch/arm/mach-davinci/Makefile                  |    1 +
>  arch/arm/mach-davinci/board-omapl138-heliosv1.c |   51 +++++++++++++++++++++++
>  3 files changed, 61 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/mach-davinci/board-omapl138-heliosv1.c
> 
> diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig
> index c0deaca..21a8ce9 100644
> --- a/arch/arm/mach-davinci/Kconfig
> +++ b/arch/arm/mach-davinci/Kconfig
> @@ -224,6 +224,15 @@ config MACH_OMAPL138_HAWKBOARD
>  	  Information of this board may be found at
>  	  http://www.hawkboard.org/
>  
> +config MACH_HELIOS_V1
> +	bool "Nanometrics OMAPL-138 Helios V1 platform"
> +	depends on ARCH_DAVINCI_DA850
> +	help
> +	  Say Y here to select the Nanometrics OMAPL-138 Helios V1 platform.
> +	  This is a development system based on the DA850 EVM baseboard.
> +	  It is the first Helios hardware platform upon which other platforms in the
> +	  Helios product family are based.
> +
>  config DAVINCI_MUX
>  	bool "DAVINCI multiplexing support"
>  	depends on ARCH_DAVINCI
> diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile
> index 9a01441..96d74c9 100644
> --- a/arch/arm/mach-davinci/Makefile
> +++ b/arch/arm/mach-davinci/Makefile
> @@ -36,6 +36,7 @@ obj-$(CONFIG_MACH_DAVINCI_DA850_EVM)	+= board-da850-evm.o
>  obj-$(CONFIG_MACH_TNETV107X)		+= board-tnetv107x-evm.o
>  obj-$(CONFIG_MACH_MITYOMAPL138)		+= board-mityomapl138.o
>  obj-$(CONFIG_MACH_OMAPL138_HAWKBOARD)	+= board-omapl138-hawk.o
> +obj-$(CONFIG_MACH_HELIOS_V1)		+= board-omapl138-heliosv1.o
>  
>  # Power Management
>  obj-$(CONFIG_CPU_FREQ)			+= cpufreq.o
> diff --git a/arch/arm/mach-davinci/board-omapl138-heliosv1.c b/arch/arm/mach-davinci/board-omapl138-heliosv1.c
> new file mode 100644
> index 0000000..73cc0a9
> --- /dev/null
> +++ b/arch/arm/mach-davinci/board-omapl138-heliosv1.c
> @@ -0,0 +1,51 @@
> +/*
> + * Nanometrics OMAPL-138 Helios V1 platform.
> + *
> + * Copyright (C) 2011 Nanometrics Inc.
> + * 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/kernel.h>
> +#include <linux/init.h>
> +#include <linux/console.h>
> +#include <linux/gpio.h>
> +
> +#include <asm/mach-types.h>
> +#include <asm/mach/arch.h>
> +
> +#include <mach/cp_intc.h>
> +#include <mach/da8xx.h>
> +#include <mach/da850-reference.h>
> +
> +static __init void helios_v1_init(void)
> +{
> +	int ret;
> +
> +	da850_reference_serial_init();
> +
> +	ret = da8xx_register_watchdog();
> +	if (ret)
> +		pr_warning("%s: watchdog registration failed: %d\n",
> +			__func__, ret);
> +}
> +
> +#ifdef CONFIG_SERIAL_8250_CONSOLE
> +static int __init helios_v1_console_init(void)
> +{
> +	if (!machine_is_helios_v1())
> +		return 0;
> +
> +	return da850_reference_add_preferred_console();
> +}
> +console_initcall(helios_v1_console_init);
> +#endif
> +
> +MACHINE_START(HELIOS_V1, "Nanometrics OMAPL-138 Helios V1 platform")
> +	.boot_params	= DA850_REFERENCE_BOOT_PARAMS,
> +	.map_io		= da850_reference_map_io,
> +	.init_irq	= cp_intc_init,
> +	.timer		= &davinci_timer,
> +	.init_machine	= helios_v1_init,
> +MACHINE_END

since this also omapl138-based, can't you re-use the
board-omapl138-hawk.c board-file ? I mean, this is only initializing
console and that's it. What else does this board have ? Does it have
USB, that EMAC/MDIO device ?

To me it looks like you could re-use that board-file and just add a few
machine checks for the different part (??)

> -- 
> 1.7.4.1
> 
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-- 
balbi

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