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
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next prev parent 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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