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    SubjectRe: [PATCH 00/25] serial: sh-sci: Add external clock and BRG Support
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    On Fri, Nov 20, 2015 at 3:50 PM, Laurent Pinchart
    <laurent.pinchart@ideasonboard.com> wrote:
    > On Friday 20 November 2015 10:07:31 Geert Uytterhoeven wrote:
    >> On Fri, Nov 20, 2015 at 9:58 AM, Laurent Pinchart wrote:
    >> > On Friday 20 November 2015 09:22:16 Geert Uytterhoeven wrote:
    >> >> On Thu, Nov 19, 2015 at 10:08 PM, Laurent Pinchart wrote:
    >> >>> Could you briefly explain (and even better in a source code comment)
    >> >>> how you handle baud rate calculation with the chained BRGs ?
    >> >>
    >> >> I'll do that. Note that there's no chaining of BRGs, only muxing (so yes,
    >> >> it needs more clarification ;-).
    >> >
    >> > Really ? I thought the BRG-EC was one possible input for the internal BRG
    >> > ? Does it bypass the internal BRG ? Or do you configure the internal BRG
    >> > to not divide the clock when using the BRG-EC ?
    >>
    >> Yes, it's bypassed.
    >>
    >> Cfr. SCSCR.CKE[1:0].
    >> '00' means internal BRG (although the docs state P divided by 1/4/16/64),
    >> '10' means SCK or SC_CLK (SCIF_CLK/INT_CLK).
    >
    > That's indeed simpler. Could you capture the behaviour in a source code
    > comment ?

    Sure.

    Gr{oetje,eeting}s,

    Geert

    --
    Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

    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


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