Re: [PATCH v4 0/9] ARM/arm64: dts: rcar: Enable SCIF_CLK frequency and pins

[Simon Horman <horms@verge.net.au>]

On Fri, Jan 29, 2016 at 11:17:17AM +0100, Geert Uytterhoeven wrote:
> 	Hi Simon, Magnus,
> 
> This patch series adds support for the external crystal feeding SCIF_CLK
> to (H)SCIF on the various Renesas R-Car Gen1, Gen2, and Gen3 development
> boards.  This increases the range and accuracy of supported baud rates.
> Support for this has been accepted in the driver in v4.5-rc1.
> 
> Changes compared to v3:
>   - Change one-line summary prefix to match current arm-soc practices,
>   - Tested on r8a7794/alt,
>   - Rebased,
> 
> Changes compared to v2:
>   - Add support for r8a7778/bockw, r8a7779/marzen, r8a7790/lager,
>     r8a7791/porter, r8a7793/gose, r8a7794/alt, and r8a7794/silk,
>   - Add Reviewed-by.
> 
> Testing:
>   - This was tested locally on r8a7791/koelsch and r8a7795/salvator-x,
>   - This was tested remotely on r8a7778/bockw, r8a7779/marzen, and
>     r8a7794/alt,
>   - This has been in renesas-drivers for a while, so I assume it has
>     received basic testing on other boards,
>   - Hints for various levels of testing:
>       - Change the "dev_dbg" after "done:" in
> 	drivers/tty/serial/sh-sci.c to "dev_info" to print clock and bit
> 	rate,
>       - "yes U | tr -d '\n' > /dev/ttySCx" outputs a square wave with a
>         frequency of half the bit rate on TXD,
>       - Modifying the frequency of SCIF_CLK causes garbage on the serial
>         console, unless you compensate by changing the bit rate in
>         /chosen/stdout-path,
>       - If you disable the SCIF_CLK, the brg_int clock will be used. If
>         you change that clock, you'll get garbage again.
> 
> Dependencies:
>   - renesas-devel-20160129-v4.5-rc1,
>   - series "[PATCH v4 0/7] ARM: dts: R-Car: Add SCIF fallback
>     compatibility strings",
>   - series "[PATCH v4 00/11] ARM: dts: shmobile: Rename the serial port
>     clock to fck",
>   - series "[PATCH v4 0/7] ARM: dts: r-car: Add BRG support for
>     (H)SCIF".
> 
> Thanks for applying!

Is this safe to queue up in the light of the dependency on
renesas-devel-20160129-v4.5-rc1?