| Date | Thu, 19 Nov 2015 21:44:27 +0100 | Subject | Re: [PATCH 02/25] serial: sh-sci: Update DT binding documentation for BRG support | From | Geert Uytterhoeven <> |
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Hi Laurent,
On Thu, Nov 19, 2015 at 9:26 PM, Laurent Pinchart <laurent.pinchart@ideasonboard.com> wrote: > On Thursday 19 November 2015 19:38:41 Geert Uytterhoeven wrote: >> Amend the DT bindings to include the optional clock sources for the Baud >> Rate Generator for External Clock (BRG), as found on some SCIF variants >> and on HSCIF.
>> --- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt >> +++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt >> @@ -46,6 +46,12 @@ Required properties: >> On (H)SCI(F) and some SCIFA, an additional clock may be specified: >> - "hsck" for the optional external clock input (on HSCIF), >> - "sck" for the optional external clock input (on other variants). >> + On UARTs equipped with a Baud Rate Generator for External Clock (BRG) >> + (some SCIF and HSCIF), additional clocks may be specified: >> + - "int_clk" for the optional internal clock source for the frequency >> + divider (typically the (AXI or SHwy) bus clock), > > Isn't this always the same clock as the SCIF functional clock ?
(On R-Car Gen2/3)
No, SCIF uses different parents for fck (p) and int_clk (zs). HSCIF uses the same parents though (zs).
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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