[PATCH] ARM: EXYNOS: Consolidate multiple low-level UART port definitions

Tushar Behera tushar.behera at linaro.org
Tue Jun 4 05:43:05 EDT 2013

On 05/31/2013 11:50 PM, Kevin Hilman wrote:
> Tushar Behera <tushar.behera at linaro.org> writes:
>> There are two definitions for low-level UART ports for Exynos platform.
>> CONFIG_S3C_LOWLEVEL_UART_PORT is used for printing "Uncompressing
>> Linux... done, booting the kernel." and CONFIG_S3C_UART for other
>> low-level messages.
>> The assumption for both the uart ports is that they are pre-configured
>> in the bootloader. Since they are essentially the same always, it
>> would be good to consolidate them to use only one macro, in this case
>> 'DEBUG_S3C_UART' would be a better option.
>> 'DEBUG_S3C_UART' is defined only if DEBUG_LL is enabled. We can safely
>> disable this option when DEBUG_LL is not defined and we can boot various
>> boards with different UART port settings. Only drawback of this
>> approach is that when DEBUG_LL is not defined, we would be missing the
>> print "Uncompressing Linux... done, booting the kernel."
> Perfectly acceptable to me (and already the case on OMAP.)
>> Since CONFIG_S3C_LOWLEVEL_UART_PORT is still used by other Samsung
>> boards, the consolidation applies only for ARCH_EXYNOS.
>> Signed-off-by: Tushar Behera <tushar.behera at linaro.org>
> Acked-by: Kevin Hilman <khilman at linaro.org>

Thanks Kevin.

I have an updated version of this patch updated for all of Samsung

[1] http://www.gossamer-threads.com/lists/linux/kernel/1723429

Tushar Behera

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