On Tuesday 31 August 2010 12:07:33 pm Sergei Shtylyov wrote:
> Victor Rodriguez wrote:
> > Basic support for Hawkboard OMAPL138 just UART cominication is included
> >
> > Signed-off-by: Victor Rodriguez <[email protected]>
> >
> > Notes: This patch is checked with
> > 0a50e05b20f3c6af67656303bdb3661a2541ce03 from Kernel development tree for
> > TI DaVinci family of processors
> >
> > This patch works with basic da8xx_omapl_defconfig, it just have
> > basic support
> > for UART console
> > ---
> > arch/arm/mach-davinci/Kconfig | 9 +++
> > arch/arm/mach-davinci/Makefile | 1 +
> > arch/arm/mach-davinci/board-da850-hawk.c | 69
> > +++++++++++++++++++++++ arch/arm/mach-davinci/include/mach/uncompress.h |
> > 1 +
> > 4 files changed, 80 insertions(+), 0 deletions(-)
> > create mode 100644 arch/arm/mach-davinci/board-da850-hawk.c
> >
> > diff --git a/arch/arm/mach-davinci/Kconfig
> > b/arch/arm/mach-davinci/Kconfig index 2bf03e9..fd8a11c 100644
> > --- a/arch/arm/mach-davinci/Kconfig
> > +++ b/arch/arm/mach-davinci/Kconfig
> > @@ -185,6 +185,15 @@ config MACH_TNETV107X
> > help
> > Say Y here to select the TI TNETV107X Evaluation Module.
> >
> > +config MACH_OMAPL138_HAWKBOARD
> > + bool "TI DA850/OMAP-L138/AM18xx Hawkboard(.org) Platform"
> > + default ARCH_DAVINCI_DA850
>
> Only EVM boards are enabled by default.
>
> > + depends on ARCH_DAVINCI_DA850
> > + help
> > + Say Y here to select the TI DA850/OMAP-L138/AM18xx Hawkboard.
> > + Information of this board may be found at
> > + http://www.hawkboard.org/
> > +
> > config DAVINCI_MUX
> > bool "DAVINCI multiplexing support"
> > depends on ARCH_DAVINCI
>
> [...]
>
> > diff --git a/arch/arm/mach-davinci/board-da850-hawk.c
> > b/arch/arm/mach-davinci/board-da850-hawk.c
> > new file mode 100644
> > index 0000000..e34bcbb
> > --- /dev/null
> > +++ b/arch/arm/mach-davinci/board-da850-hawk.c
> > @@ -0,0 +1,69 @@
> > +/*
> > + * Hawkboar.org based on TI's OMAP-L138 Platform
>
> Hawkboard.org?
>
> > + *
> > + * Initial code: Syed Mohammed Khasim
> > + *
> > + * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com
> > + *
> > + * Derived from: arch/arm/mach-davinci/board-da850-evm.c
> > + * Original Copyrights follow:
> > + *
> > + * 2007, 2009 (c) MontaVista Software, Inc. This file is licensed under
>
> MV didn't write any code in board-da850-evm.c, so the original
> copyright is wrong.
>
> > + * 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>
> > +
> > +
> > +
>
> Too many empty lines?
>
> > +static struct davinci_uart_config omapl138_hawk_uart_config __initdata =
> > { + .enabled_uarts = 0x7,
>
> Why enable URARTs 0 and 1 if you shut down them below?
>
This is the same method used in 'board-da850-evm.c'. I tried making this
0x4 but kernel locked-up. I see following on the kernel log:
Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
serial8250 serial8250.0: unable to register port at index 0 (IO0 MEM1c42000
IRQ25): -22
serial8250 serial8250.0: unable to register port at index 1 (IO0 MEM1d0c000
IRQ53): -22
serial8250.0: ttyS0 at MMIO 0x1d0d000 (irq = 61) is a 16550A
Maybe someone can explain the root cause.
Best Regards,
Caglar
> > +};
> > +
> > +static __init void omapl138_hawk_init(void)
> > +{
> > +
> > + davinci_serial_init(&omapl138_hawk_uart_config);
> > +
> > + /*
> > + * shut down uart 0 and 1; they are not used on the board and
> > + * accessing them causes endless "too much work in irq53"
> > messages + * with arago fs
> > + */
> > + __raw_writel(0, IO_ADDRESS(DA8XX_UART1_BASE) + 0x30);
> > + __raw_writel(0, IO_ADDRESS(DA8XX_UART0_BASE) + 0x30);
> > +
> > +}
>
> WBR, Sergei
>
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