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! Geert Uytterhoeven (9): ARM: dts: alt: Enable SCIF_CLK frequency and pins ARM: dts: bockw: Enable SCIF_CLK frequency and pins ARM: dts: gose: Enable SCIF_CLK frequency and pins ARM: dts: koelsch: Enable SCIF_CLK frequency and pins ARM: dts: lager: Enable SCIF_CLK frequency and pins ARM: dts: marzen: Enable SCIF_CLK frequency and pins ARM: dts: porter: Enable SCIF_CLK frequency and pins ARM: dts: silk: Enable SCIF_CLK frequency and pins arm64: dts: salvator-x: Enable SCIF_CLK frequency and pins arch/arm/boot/dts/r8a7778-bockw.dts | 13 +++++++++++++ arch/arm/boot/dts/r8a7779-marzen.dts | 13 +++++++++++++ arch/arm/boot/dts/r8a7790-lager.dts | 13 +++++++++++++ arch/arm/boot/dts/r8a7791-koelsch.dts | 13 +++++++++++++ arch/arm/boot/dts/r8a7791-porter.dts | 13 +++++++++++++ arch/arm/boot/dts/r8a7793-gose.dts | 13 +++++++++++++ arch/arm/boot/dts/r8a7794-alt.dts | 13 +++++++++++++ arch/arm/boot/dts/r8a7794-silk.dts | 13 +++++++++++++ arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts | 12 ++++++++++++ 9 files changed, 116 insertions(+) -- 1.9.1 Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html