[U-Boot] [PATCH v5] ARM: mxs: Added application UART driver

[Marek Vasut <marex@denx.de>]

Dear Andreas Wass,

> The driver makes it possible to use an application UART as
> the U-Boot output console for Freescale i.MX23/i.MX28 devices.
> 
> Signed-off-by: Andreas Wass <andreas.wass@dalelven.com>
> Cc: Fabio Estevam <fabio.estevam@freescale.com>
> Cc: Marek Vasut <marex@denx.de>
> ---
> Changes for v2:
>    - Added comment that regs-uartapp.h is pulled from LTIB
>    - BM_ prefixes removed and _MASK suffixes added instead
>    - BP_ prefixes removed and _OFFSET suffixes added instead
>    - BF_ defines removed altogether
>    - CONFIG_MXS_AUART_CLK renamed to MXS_AUART_CLK and guarding ifndef
> removed - Added comments describing what is set and unset during init of
> driver - Added newline that was accidently removed from serial.c
> 
>  Changes for v3:
>    - All BV_ values are now on the form (value << something)
>    - BV_ prefix removed and double underscore substituted with a single
>    - File comment of mxs_auart.c now attributes what the driver is based on
>    - Uses gd->baudrate instead of CONFIG_BAUDRATE
>    - If gd->baudrate is 0 it reverts back to CONFIG_BAUDRATE
>    - Checks the validity of the div value calculated when setting the
> baudrate - Magic numbers are now defines instead
>    - Cleanup of comments
>    - Cleanup of commit message
> 
>  Changes for v4:
>    - Fixed UARTAPP_LINECTRL2_WLEN_*BITS values
> 
>  Changes for v5:
>    - Removed all RSVD values from regs-uartapp.h
>    - 0x0000FFFF (and similar) turned into 0xFFFF (and similar)
>    - Removed all bitshifts by 0
>    - All masks with non-zero shifting are now on the form (value << shift)
> 
>  arch/arm/include/asm/arch-mxs/regs-uartapp.h | 220
> +++++++++++++++++++++++++++ drivers/serial/Makefile                      |
>   1 +
>  drivers/serial/mxs_auart.c                   | 151 ++++++++++++++++++
>  drivers/serial/serial.c                      |   2 +
>  4 files changed, 374 insertions(+)
>  create mode 100644 arch/arm/include/asm/arch-mxs/regs-uartapp.h
>  create mode 100644 drivers/serial/mxs_auart.c

Acked-by: Marek Vasut <marex@denx.de>

Best regards,
Marek Vasut