[U-Boot] u-boot using UART1

[U-Boot] u-boot using UART1

[Nick Thompson]

Don,

Please ask u-boot questions on the u-boot mailing list.

On 22/07/11 01:03, Don McCune wrote:
>
> We are bringing up a board based on the OMAPL137 processor.  The board is similar to the Spectrum Digital Evm board; however it has used UART2 for something else, so we need to make UAR1 the console line for u-boot.  Could you tell us how to modify u-boot to use UART1 for its console?
>

$ grep UART include/configs/da830evm.h
#define CONFIG_SYS_NS16550_COM1 DAVINCI_UART2_BASE /* Base address of UART2 */
#define CONFIG_SYS_NS16550_CLK  clk_get(DAVINCI_UART2_CLKID)
#define CONFIG_CONS_INDEX       1               /* use UART0 for console */

Just change DAVINCI_UART2_BASE to DAVINCI_UART1_BASE.

(and make sure your boot loader enables the pinmux for UART1)

>  
>
> Please reply-to-all with any questions or answers.  If you wish to contact us directly, please call Tim Orling at 805 269 0767.
>
>  
>
> Thank you.
>
>  
>
> Regards,
>
> Don McCune
>
>
 
Nick.

[U-Boot] u-boot using UART1

[Wolfgang Denk]

Dear Nick Thompson,

In message <4E293329.9050009@ge.com> you wrote:
>
> > Could you tell us how to modify u-boot to use UART1 for its console?
> 
> $ grep UART include/configs/da830evm.h
> #define CONFIG_SYS_NS16550_COM1 DAVINCI_UART2_BASE /* Base address of UART2 */
> #define CONFIG_SYS_NS16550_CLK  clk_get(DAVINCI_UART2_CLKID)
> #define CONFIG_CONS_INDEX       1               /* use UART0 for console */
> 
> Just change DAVINCI_UART2_BASE to DAVINCI_UART1_BASE.

Eventually it would be useful to also change the definition of
CONFIG_SYS_NS16550_CLK to refer to DAVINCI_UART1_CLKID

Best regards,

Wolfgang Denk

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