[U-Boot] [PATCH 0/3] rockchip: Use the standard debug UART on rockchip

[Simon Glass]

HI Lin,

On 13 December 2015 at 23:26, hl <hl at rock-chips.com> wrote:
> Hi Simon.
>
>     Thank you for updating this series patch, i have verified it in
> evb-rk3036 board,
> it worked.
>

Great, thanks!
>
>
> On 14/12/15 12:36, Simon Glass wrote:
>>
>> The RK3036 has only 8KB of RAM available for SPL. At present it uses its
>> own
>> debug UART code.
>>
>> By allowing the ns16550 driver to provide a debug UART without providing a
>> full serial driver, we can enable a UART with a very small overhead. This
>> requires addition Kconfig options. The debug UART supports printhex8(),
>> printascii() and a few other functions.
>>
>> The root driver and uclass are pulled in by this series, but their size is
>> very small. It would possible to drop these by disabling CONFIG_DM_SERIAL.
>> However the ns16550 driver makes this hard, due to it supporting operation
>> without driver model, and operating differently in this case.
>>
>>
>> Simon Glass (3):
>>    dm: serial: Allow the UART driver to be dropped from the image
>>    dm: ns16550: Allow the driver to be omitted if requested
>>    rockchip: Use the debug UART on rk3036
>>
>>   arch/arm/mach-rockchip/Makefile           |  1 -
>>   arch/arm/mach-rockchip/rk3036-board-spl.c |  9 ++++-
>>   arch/arm/mach-rockchip/rk_early_print.c   | 63
>> -------------------------------
>>   configs/evb-rk3036_defconfig              |  6 +++
>>   drivers/serial/Kconfig                    | 20 ++++++++++
>>   drivers/serial/ns16550.c                  |  2 +
>>   drivers/serial/serial-uclass.c            |  2 +
>>   include/configs/rk3036_common.h           |  2 +
>>   8 files changed, 40 insertions(+), 65 deletions(-)
>>   delete mode 100644 arch/arm/mach-rockchip/rk_early_print.c
>>
>
> --
> Lin Huang
>
>

Regards,
Simon