linux-kernel - Re: [PATCH 1/3] ARM: pxa168: added support for Teton BGA platform

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Date:	Thu, 9 Sep 2010 15:39:15 +0800
From:	Eric Miao <eric.y.miao@...il.com>
To:	Marek Vasut <marek.vasut@...il.com>
Cc:	"Mark F. Brown" <mark.brown314@...il.com>,
	linux-arm-kernel@...ts.infradead.org,
	Haojian Zhuang <haojian.zhuang@...vell.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] ARM: pxa168: added support for Teton BGA platform

On Thu, Sep 9, 2010 at 9:21 AM, Marek Vasut <marek.vasut@...il.com> wrote:
> Dne Čt 9. září 2010 01:42:36 Mark F. Brown napsal(a):
>> On Wed, Sep 8, 2010 at 11:51 AM, Marek Vasut <marek.vasut@...il.com> wrote:
>> > Dne St 8. září 2010 04:56:45 Mark F. Brown napsal(a):
>> >
>> > ---------------------------
>> > Description is missing here
>> > ---------------------------
>> >
>> >> Signed-off-by: Mark F. Brown <mark.brown314@...il.com>
>> >> ---
>> >>  arch/arm/mach-mmp/Kconfig     |    7 ++++++
>> >>  arch/arm/mach-mmp/Makefile    |    1 +
>> >>  arch/arm/mach-mmp/teton_bga.c |   47
>> >> +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 55
>> >> insertions(+), 0 deletions(-)
>> >>  create mode 100644 arch/arm/mach-mmp/teton_bga.c
>> >>
>> >> diff --git a/arch/arm/mach-mmp/Kconfig b/arch/arm/mach-mmp/Kconfig
>> >> index 6ab843e..0711d3b 100644
>> >> --- a/arch/arm/mach-mmp/Kconfig
>> >> +++ b/arch/arm/mach-mmp/Kconfig
>> >> @@ -57,6 +57,13 @@ config MACH_MARVELL_JASPER
>> >>         PXA910-based development board. Since MMP2 is compatible to
>> >>         ARMv6 architecture.
>> >>
>> >> +config MACH_TETON_BGA
>> >> +     bool "Marvell's PXA168 Teton BGA Development Board"
>> >> +     select CPU_PXA168
>> >> +     help
>> >> +       Say 'Y' here if you want to support the Marvell PXA168-based
>> >> +       Teton BGA Development Board.
>> >> +
>> >>  endmenu
>> >>
>> >>  config CPU_PXA168
>> >> diff --git a/arch/arm/mach-mmp/Makefile b/arch/arm/mach-mmp/Makefile
>> >> index 8b66d06..751cdbf 100644
>> >> --- a/arch/arm/mach-mmp/Makefile
>> >> +++ b/arch/arm/mach-mmp/Makefile
>> >> @@ -17,3 +17,4 @@ obj-$(CONFIG_MACH_TAVOREVB) += tavorevb.o
>> >>  obj-$(CONFIG_MACH_TTC_DKB)   += ttc_dkb.o
>> >>  obj-$(CONFIG_MACH_FLINT)     += flint.o
>> >>  obj-$(CONFIG_MACH_MARVELL_JASPER) += jasper.o
>> >> +obj-$(CONFIG_MACH_TETON_BGA) += teton_bga.o
>> >> diff --git a/arch/arm/mach-mmp/teton_bga.c
>> >> b/arch/arm/mach-mmp/teton_bga.c new file mode 100644
>> >> index 0000000..014cc37
>> >> --- /dev/null
>> >> +++ b/arch/arm/mach-mmp/teton_bga.c
>> >> @@ -0,0 +1,47 @@
>> >> +/*
>> >> + *  linux/arch/arm/mach-mmp/teton_bga.c
>> >> + *
>> >> + *  Support for the Marvell PXA168 Teton BGA Development Platform.
>> >
>> > Authoring information of this file are missing. Also, MAINTAINERS entry
>> > is missing.
>> >
>> >> + *
>> >> + *  This code is based on aspenite.c
>> >> + *
>> >> + *  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 + *  publishhed by the Free Software Foundation.
>> >> + */
>> >> +
>> >> +#include <linux/init.h>
>> >> +#include <linux/kernel.h>
>> >> +#include <linux/platform_device.h>
>> >> +
>> >> +#include <asm/mach-types.h>
>> >> +#include <asm/mach/arch.h>
>> >> +#include <mach/addr-map.h>
>> >> +#include <mach/mfp-pxa168.h>
>> >> +#include <mach/pxa168.h>
>> >> +#include <mach/gpio.h>
>> >
>> > use ... #include <linux/gpio.h>
>> >
>> >> +
>> >> +#include "common.h"
>> >> +
>> >> +static unsigned long teton_bga_pin_config[] __initdata = {
>> >> +     /* UART1 */
>> >> +     GPIO107_UART1_TXD,
>> >> +     GPIO108_UART1_RXD,
>> >> +};
>> >> +
>> >> +static void __init teton_bga_init(void)
>> >> +{
>> >> +     mfp_config(ARRAY_AND_SIZE(teton_bga_pin_config));
>> >> +
>> >> +     /* on-chip devices */
>> >> +     pxa168_add_uart(1);
>> >
>> > Don't we have enum for these magic numbers on pxa168 ?
>> >
>> >> +}
>> >> +
>> >> +MACHINE_START(TETON_BGA, "PXA168-based Teton BGA Development Platform")
>> >> +     .phys_io        = APB_PHYS_BASE,
>> >> +     .io_pg_offst    = (APB_VIRT_BASE >> 18) & 0xfffc,
>> >> +     .map_io         = mmp_map_io,
>> >> +     .init_irq       = pxa168_init_irq,
>> >> +     .timer          = &pxa168_timer,
>> >> +     .init_machine   = teton_bga_init,
>> >> +MACHINE_END
>> >
>> > Cheers
>>
>> I am assuming you mean the magic number for .io_pg_offst:
>>  .io_pg_offst    = (APB_VIRT_BASE >> 18) & 0xfffc,
>
> Nope, sorry, I meant this:
>
> +     pxa168_add_uart(1);
>
> The (1) seems weird, but whatever. I don't have any pxa168 device.
>

Actually the parameter means the device ID, so pxa168_add_uart(1)
means to add UART1 on pxa168, so it's quite straight-forward.
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