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From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: Vicente Bergas <vicencb@gmail.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 4/9] omap_uart: add low level port serial initialization
Date: Sun, 10 Mar 2013 14:16:01 +0100	[thread overview]
Message-ID: <20130310131601.GA11170@game.jcrosoft.org> (raw)
In-Reply-To: <1362871182-25726-5-git-send-email-vicencb@gmail.com>

On 00:19 Sun 10 Mar     , Vicente Bergas wrote:
>  some sort of UART setup has to be done in order to use PUTC_LL
> 
> Signed-off-by: Vicente Bergas <vicencb@gmail.com>
> ---
>  arch/arm/mach-omap/include/mach/debug_ll.h | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/arch/arm/mach-omap/include/mach/debug_ll.h b/arch/arm/mach-omap/include/mach/debug_ll.h
> index eea6eb3..9740848 100644
> --- a/arch/arm/mach-omap/include/mach/debug_ll.h
> +++ b/arch/arm/mach-omap/include/mach/debug_ll.h
> @@ -45,9 +45,30 @@
>  #endif
>  
>  #define LSR_THRE	0x20	/* Xmit holding register empty */
> +#define LCR_BKSE	0x80	/* Bank select enable */
>  #define LSR		(5 << 2)
>  #define THR		(0 << 2)
> +#define DLL		(0 << 2)
> +#define IER		(1 << 2)
> +#define DLM		(1 << 2)
> +#define FCR		(2 << 2)
> +#define LCR		(3 << 2)
> +#define MCR		(4 << 2)
> +#define MDR		(8 << 2)
>  
> +static inline void INIT_LL(void)
where this come from?
> +{
> +	writeb(0x00, UART_BASE + LCR);
> +	writeb(0x00, UART_BASE + IER);
> +	writeb(0x07, UART_BASE + MDR);
> +	writeb(LCR_BKSE, UART_BASE + LCR);
> +	writeb(26, UART_BASE + DLL); /* 115200 */
> +	writeb(0, UART_BASE + DLM);
> +	writeb(0x03, UART_BASE + LCR);
> +	writeb(0x03, UART_BASE + MCR);
> +	writeb(0x07, UART_BASE + FCR);
> +	writeb(0x00, UART_BASE + MDR);
> +}
>  static inline void PUTC_LL(char c)
>  {
>  	/* Wait until there is space in the FIFO */
> -- 
> 1.8.1.5
> 
> 
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox

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  reply	other threads:[~2013-03-10 13:20 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-09 23:19 [PATCH 0/9] Add support for booting ArchosG9 from sd-card Vicente Bergas
2013-03-09 23:19 ` [PATCH 1/9] defaultenv-2: don't load nonexistent file Vicente Bergas
2013-03-09 23:19 ` [PATCH 2/9] omap4_romusb: rename omap4_usbboot_pdata to omap4_usbboot_data Vicente Bergas
2013-03-09 23:19 ` [PATCH 3/9] omap_uart: rename OMAP3EVM_UARTx to OMAP_UARTx Vicente Bergas
2013-03-09 23:19 ` [PATCH 4/9] omap_uart: add low level port serial initialization Vicente Bergas
2013-03-10 13:16   ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2013-03-10 22:16     ` vj
2013-03-10 22:35       ` Sascha Hauer
2013-03-10 22:44         ` vj
2013-03-10 23:01           ` Sascha Hauer
2013-03-10 23:09             ` vj
2013-03-09 23:19 ` [PATCH 5/9] panda: remove unused configuration items Vicente Bergas
2013-03-09 23:19 ` [PATCH 6/9] omap4_romusb: allow adding usb-serial when not booting from usb Vicente Bergas
2013-03-14  7:50   ` Sascha Hauer
2013-03-09 23:19 ` [PATCH 7/9] menu: avoid errors when building submenus Vicente Bergas
2013-03-10 13:16   ` Jean-Christophe PLAGNIOL-VILLARD
2013-03-10 22:29     ` vj
2013-03-11  8:50       ` Sascha Hauer
2013-03-09 23:19 ` [PATCH 8/9] archos: add atag appender for all features Vicente Bergas
2013-03-11  8:36   ` Sascha Hauer
2013-03-09 23:19 ` [PATCH 9/9] archosg9: enable booting from sd-card Vicente Bergas
2013-03-11 21:25 ` [PATCH 0/9] Add support for booting ArchosG9 " Sascha Hauer

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