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

[hl <hl@rock-chips.com>]

Hi Simon.

     Thank you for updating this series patch, i have verified it in 
evb-rk3036 board,
it worked.


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