[U-Boot] [PATCH] ZOOM2 Add serial support.

[Wolfgang Denk <wd@denx.de>]

Dear Tom Rix,

In message <1238602273-27252-4-git-send-email-Tom.Rix@windriver.com> you wrote:
> Zoom2 serial is in general supplied by one of the 4 UARTS on the debug board.
> The default serial is from the USB connector on left side of the debug board.
> The USB connector will produce 2 of the 4 UARTS.  On your host pick the first
> enumeration.
> 
> The serial port set up is the same with Zoom1.
> Baud rate 115200, 8 bit data, no parity, 1 stop bit, no flow.
> 
> The kernel bootargs are
> console=ttyS3,115200n8
...
> diff --git a/board/omap3/zoom2/Makefile b/board/omap3/zoom2/Makefile
> index b8fa5a7..d27990c 100644
> --- a/board/omap3/zoom2/Makefile
> +++ b/board/omap3/zoom2/Makefile
> @@ -26,7 +26,8 @@ include $(TOPDIR)/config.mk
>  LIB	= $(obj)lib$(BOARD).a
>  
>  COBJS	:= zoom2.o \
> -	debug_board.o
> +	debug_board.o \
> +	zoom2_serial.o

Please sort lists.

>  SRCS	:= $(COBJS:.o=.c)
>  OBJS	:= $(addprefix $(obj),$(COBJS))
> diff --git a/board/omap3/zoom2/zoom2_serial.c b/board/omap3/zoom2/zoom2_serial.c
> new file mode 100644
> index 0000000..c1c4f4a
> --- /dev/null
> +++ b/board/omap3/zoom2/zoom2_serial.c
...
> +int quad_init_dev(unsigned long base)
> +{
> +	/* The Quad UART is on the debug board.
> +	   Check if the debug board is attached before using the UART */

Incorrect multiline comment style. Please fix globally.


> diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
> index 397f5df..93a1bd2 100644
> --- a/drivers/serial/ns16550.c
> +++ b/drivers/serial/ns16550.c
> @@ -14,9 +14,18 @@
>  void NS16550_init (NS16550_t com_port, int baud_divisor)
>  {
>  	com_port->ier = 0x00;
> -#ifdef CONFIG_OMAP
> +#if defined(CONFIG_OMAP) && !defined(CONFIG_OMAP3_ZOOM2)
>  	com_port->mdr1 = 0x7;	/* mode select reset TL16C750*/
>  #endif
> +#if defined(CONFIG_OMAP3_ZOOM2)
> +	/* On Zoom2 board Set pre-scalar to 1
> +	 * CLKSEL is GND => MCR[7] is 1 => preslr is 4
> +	 * So change the prescl to 1
> +	 */
> +	com_port->lcr = 0xBF;
> +	com_port->fcr |= 0x10;
> +	com_port->mcr &= 0x7F;

Please don't add such strictly board-specific code to global driver
files.

> diff --git a/include/serial.h b/include/serial.h
> index e3d8b36..aca5221 100644
> --- a/include/serial.h
> +++ b/include/serial.h
> @@ -42,6 +42,13 @@ extern struct serial_device s3c24xx_serial1_device;
>  extern struct serial_device s3c24xx_serial2_device;
>  #endif
>  
> +#if defined(CONFIG_OMAP3_ZOOM2)
> +extern struct serial_device zoom2_serial_device0;
> +extern struct serial_device zoom2_serial_device1;
> +extern struct serial_device zoom2_serial_device2;
> +extern struct serial_device zoom2_serial_device3;
> +#endif
> +

Please don't add such strictly board-specific code to global header
files.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"Am besten betrachten Sie Fehlermeldungen als eine  Art  Psycho-Test,
mit  dem  herausgefunden  werden soll, wie belastbar Sie sind."
 - Dr. R. Wonneberger, Kompaktf?hrer LaTeX, Kap. 1.6: Fehlermeldungen