From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: Re: [PATCH 01/25] serial: sh-sci: Update DT binding documentation for external clock input Date: Mon, 21 Dec 2015 15:20:34 +0100 Message-ID: References: <1447958344-836-1-git-send-email-geert+renesas@glider.be> <1447958344-836-2-git-send-email-geert+renesas@glider.be> <1756365.Ijac5ApxcA@avalon> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: In-Reply-To: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Laurent Pinchart Cc: Geert Uytterhoeven , Greg Kroah-Hartman , Simon Horman , Magnus Damm , Yoshinori Sato , Laurent Pinchart , "linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Linux-sh list , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: devicetree@vger.kernel.org On Thu, Nov 19, 2015 at 9:33 PM, Geert Uytterhoeven wrote: > On Thu, Nov 19, 2015 at 9:19 PM, Laurent Pinchart > wrote: >> On Thursday 19 November 2015 19:38:40 Geert Uytterhoeven wrote: >>> diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt >>> b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt index >>> 2c9e6b8477e92792..8efc9b6f35637fbb 100644 >>> --- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt >>> +++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt >>> @@ -43,6 +43,9 @@ Required properties: >>> - clocks: Must contain a phandle and clock-specifier pair for each entry >>> in clock-names. >>> - clock-names: Must contain "fck" for the SCIx UART functional clock. >>> + On (H)SCI(F) and some SCIFA, an additional clock may be specified: >> >> Could you list the SCIFA variants that support external clocks ? > > The list is in the commit description of "[PATCH 19/25] serial: sh-sci: Add > support for optional external (H)SCK input": sh7723, sh7724, and r8a7740. > > Note that the list is probably incomplete, so I don't know if it's that useful > to have it in the binding docs. Especially as I haven't verified yet that it > actually works ;-) For the record: on r8a7740, this feature is not available on SCIFA instances 2-7. The sole pins providing access to SCIFA_SCK[01] are muxed for Ethernet use on r8a7740/armadillo. So it's unlikely I'll be able to support and test this. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html