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Message-Id: <1394403956-17297-7-git-send-email-sre@debian.org> Date: Sun, 9 Mar 2014 23:25:56 +0100 From: Sebastian Reichel <sre@...ian.org> To: Sebastian Reichel <sre@...g0.de>, Linus Walleij <linus.walleij@...aro.org>, Shubhrajyoti Datta <omaplinuxkernel@...il.com>, Carlos Chinea <cch.devel@...il.com> Cc: Tony Lindgren <tony@...mide.com>, Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>, Mark Rutland <mark.rutland@....com>, Ian Campbell <ijc+devicetree@...lion.org.uk>, Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org, Pali Rohár <pali.rohar@...il.com>, Ивайло Димитров <freemangordon@....bg>, Joni Lapilainen <joni.lapilainen@...il.com>, Aaro Koskinen <aaro.koskinen@....fi>, Sebastian Reichel <sre@...ian.org> Subject: [PATCHv2 6/6] Documentation: DT: omap-ssi binding documentation Create device tree binding documentation for OMAP Synchronous Serial Interface (SSI) device. Signed-off-by: Sebastian Reichel <sre@...ian.org> --- Documentation/devicetree/bindings/hsi/omap-ssi.txt | 82 ++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 Documentation/devicetree/bindings/hsi/omap-ssi.txt diff --git a/Documentation/devicetree/bindings/hsi/omap-ssi.txt b/Documentation/devicetree/bindings/hsi/omap-ssi.txt new file mode 100644 index 0000000..9649582 --- /dev/null +++ b/Documentation/devicetree/bindings/hsi/omap-ssi.txt @@ -0,0 +1,82 @@ +OMAP SSI controller bindings + +Required properties: +- compatible: Should include "ti,omap3-ssi". +- reg-names: Contains the values "sys" and "gdd". +- reg: Contains a register specifier for each entry in + reg-names. +- interrupt-names: Contains the value "gdd_mpu". +- interrupts: Contains interrupt information for each entry in + interrupt-names. +- ranges: Represents the bus address mapping between the main + controller node and the child nodes below. +- clocks: Contains clock specifiers for each entry in + clock-names. +- clock-names: Must include the following entries: + "ssi_ssr_fck": The OMAP clock of that name + "ssi_sst_fck": The OMAP clock of that name + "ssi_ick": The OMAP clock of that name +- #address-cells: Should be set to <1> +- #size-cells: Should be set to <1> + +Each port is represented as a sub-node of the ti,omap3-ssi device. + +Required Port sub-node properties: +- compatible: Should be set to the following value + ti,omap3-ssi-port (applicable to OMAP34xx devices) +- reg-names: Contains the values "rx" and "tx". +- reg: Contains a register specifier for each entry in + reg-names. +- interrupt-parent Should be a phandle for the interrupt controller +- interrupt-names: Contains the values "mpu_irq0" and "mpu_irq1". +- interrupts: Contains interrupt information for each entry in + interrupt-names. +- ti,ssi-cawake-gpio: Defines which GPIO pin is used to signify CAWAKE + events for the port. This is an optional board-specific + property. If it's missing the port will not be + enabled. + +Example for Nokia N900: + +ssi-controller@...58000 { + compatible = "ti,omap3-ssi"; + + /* needed until hwmod is updated to use the compatible string */ + ti,hwmods = "ssi"; + + reg = <0x48058000 0x1000>, + <0x48059000 0x1000>; + reg-names = "sys", + "gdd"; + + interrupts = <55>; + interrupt-names = "gdd_mpu"; + + clocks = <&ssi_ssr_fck>, + <&ssi_sst_fck>, + <&ssi_ick>; + clock-names = "ssi_ssr_fck", + "ssi_sst_fck", + "ssi_ick"; + + #address-cells = <1>; + #size-cells = <1>; + ranges; + + ssi-port@0 { + compatible = "ti,omap3-ssi-port"; + + reg = <0x4805a000 0x800>, + <0x4805a800 0x800>; + reg-names = "tx", + "rx"; + + interrupt-parent = <&intc>; + interrupts = <51>, + <52>; + interrupt-names = "mpu_irq0", + "mpu_irq1"; + + ti,ssi-cawake-gpio = <&gpio5 23 GPIO_ACTIVE_HIGH>; /* 151 */ + } +} -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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