From: Geert Uytterhoeven <geert+renesas@glider.be> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Simon Horman <horms@verge.net.au>, Magnus Damm <magnus.damm@gmail.com>, Yoshinori Sato <ysato@users.sourceforge.jp> Cc: linux-serial@vger.kernel.org, linux-sh@vger.kernel.org, Geert Uytterhoeven <geert+renesas@glider.be>, devicetree@vger.kernel.org Subject: [PATCH v3 03/27] serial: sh-sci: Update DT binding documentation for external clock input Date: Mon, 14 Dec 2015 18:57:12 +0000 [thread overview] Message-ID: <1450119456-964-4-git-send-email-geert+renesas@glider.be> (raw) In-Reply-To: <1450119456-964-1-git-send-email-geert+renesas@glider.be> Amend the DT bindings to include the optional external clock on (H)SCI(F) and some SCIFA, where this pin can serve as a clock input, depending on board wiring. Clarify the use of the divided functional clock as a source for the sampling clock. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: devicetree@vger.kernel.org --- v3: - Add Acked-by, - Clarify the use of the divided functional clock. --- Documentation/devicetree/bindings/serial/renesas,sci-serial.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt index 7091213f02513cda..31cc0631ef7ca22d 100644 --- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt +++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt @@ -51,6 +51,11 @@ 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. + Apart from the divided functional clock, there may be other possible + sources for the sampling clock, depending on SCIx variant. + 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). Note: Each enabled SCIx UART should have an alias correctly numbered in the "aliases" node. -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Geert Uytterhoeven <geert+renesas@glider.be> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Simon Horman <horms@verge.net.au>, Magnus Damm <magnus.damm@gmail.com>, Yoshinori Sato <ysato@users.sourceforge.jp> Cc: linux-serial@vger.kernel.org, linux-sh@vger.kernel.org, Geert Uytterhoeven <geert+renesas@glider.be>, devicetree@vger.kernel.org Subject: [PATCH v3 03/27] serial: sh-sci: Update DT binding documentation for external clock input Date: Mon, 14 Dec 2015 19:57:12 +0100 [thread overview] Message-ID: <1450119456-964-4-git-send-email-geert+renesas@glider.be> (raw) In-Reply-To: <1450119456-964-1-git-send-email-geert+renesas@glider.be> Amend the DT bindings to include the optional external clock on (H)SCI(F) and some SCIFA, where this pin can serve as a clock input, depending on board wiring. Clarify the use of the divided functional clock as a source for the sampling clock. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: devicetree@vger.kernel.org --- v3: - Add Acked-by, - Clarify the use of the divided functional clock. --- Documentation/devicetree/bindings/serial/renesas,sci-serial.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt index 7091213f02513cda..31cc0631ef7ca22d 100644 --- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt +++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt @@ -51,6 +51,11 @@ 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. + Apart from the divided functional clock, there may be other possible + sources for the sampling clock, depending on SCIx variant. + 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). Note: Each enabled SCIx UART should have an alias correctly numbered in the "aliases" node. -- 1.9.1
next prev parent reply other threads:[~2015-12-14 18:57 UTC|newest] Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-12-14 18:57 [PATCH v3 00/27] serial: sh-sci: External Clock Support Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 02/27] serial: sh-sci: Add fallback compatibility strings Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-20 3:39 ` Rob Herring 2015-12-20 3:39 ` Rob Herring 2015-12-14 18:57 ` Geert Uytterhoeven [this message] 2015-12-14 18:57 ` [PATCH v3 03/27] serial: sh-sci: Update DT binding documentation for external clock input Geert Uytterhoeven 2015-12-20 3:39 ` Rob Herring 2015-12-20 3:39 ` Rob Herring 2015-12-14 18:57 ` [PATCH v3 04/27] serial: sh-sci: Update DT binding documentation for BRG support Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-20 3:39 ` Rob Herring 2015-12-20 3:39 ` Rob Herring 2015-12-14 18:57 ` [PATCH v3 05/27] serial: sh-sci: Drop useless check for zero sampling_rate Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 06/27] serial: sh-sci: Grammar s/Get ... for/Get ... from/ Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 07/27] serial: sh-sci: Use existing local variable in sci_parse_dt() Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 08/27] serial: sh-sci: Drop unused frame_len parameter for sci_baud_calc_hscif() Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 09/27] serial: sh-sci: Don't overwrite clock selection in serial_console_write() Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 10/27] serial: sh-sci: Convert from clk_get() to devm_clk_get() Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 11/27] serial: sh-sci: Make unsigned values in sci_baud_calc_hscif() unsigned Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 12/27] serial: sh-sci: Avoid overflow in sci_baud_calc_hscif() Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 13/27] serial: sh-sci: Improve bit rate error calculation for HSCIF Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 14/27] serial: sh-sci: Avoid calculating the receive margin " Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 15/27] serial: sh-sci: Merge sci_scbrr_calc() and sci_baud_calc_hscif() Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 16/27] serial: sh-sci: Take into account sampling rate for max baud rate Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 17/27] serial: sh-sci: Add BRG register definitions Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 18/27] serial: sh-sci: Replace struct sci_port_info by type/regtype encoding Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 19/27] serial: sh-sci: Correct SCIF type on RZ/A1H Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven [not found] ` <1450119456-964-1-git-send-email-geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org> 2015-12-14 18:57 ` [PATCH v3 01/27] serial: sh-sci: Drop the interface clock Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 20/27] serial: sh-sci: Correct SCIF type on R-Car for BRG Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 21/27] serial: sh-sci: Prepare for multiple sampling clock sources Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 22/27] serial: sh-sci: Add support for optional external (H)SCK input Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 23/27] serial: sh-sci: Add support for optional BRG on (H)SCIF Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 24/27] sh: Rename sci_ick and sci_fck clock to fck Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 25/27] sh: Remove sci_ick clock alias Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 26/27] sh: sh7734: Correct SCIF type for BRG Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-14 18:57 ` [PATCH v3 27/27] serial: sh-sci: Drop the sci_fck clock fallback Geert Uytterhoeven 2015-12-14 18:57 ` Geert Uytterhoeven 2015-12-15 4:53 ` [PATCH v3 00/27] serial: sh-sci: External Clock Support Simon Horman 2015-12-15 4:53 ` Simon Horman 2015-12-15 5:23 ` Greg Kroah-Hartman 2015-12-15 5:23 ` Greg Kroah-Hartman 2015-12-15 13:54 ` Geert Uytterhoeven 2015-12-15 13:54 ` Geert Uytterhoeven 2015-12-17 10:28 ` Geert Uytterhoeven 2015-12-17 10:28 ` Geert Uytterhoeven
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