From mboxrd@z Thu Jan 1 00:00:00 1970 From: moritz.fischer@ettus.com (Moritz Fischer) Date: Fri, 22 May 2015 11:03:10 -0700 Subject: [PATCHv1 1/2] dts: Adding docs for Xilinx LogiCORE IP mailbox driver. In-Reply-To: <1432317791-26851-1-git-send-email-moritz.fischer@ettus.com> References: <1432317791-26851-1-git-send-email-moritz.fischer@ettus.com> Message-ID: <1432317791-26851-2-git-send-email-moritz.fischer@ettus.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: Moritz Fischer --- .../bindings/mailbox/xilinx-mailbox.txt | 40 ++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/Documentation/devicetree/bindings/mailbox/xilinx-mailbox.txt b/Documentation/devicetree/bindings/mailbox/xilinx-mailbox.txt new file mode 100644 index 0000000..b735105 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/xilinx-mailbox.txt @@ -0,0 +1,40 @@ +Xilinx Mailbox Driver +===================== + +Required properties: +- compatible : "xlnx,mailbox-2.1". +- reg : physical base address of the mailbox and length of + memory mapped region. +- #mbox-cells : Common mailbox binding property to identify the number + of cells required for the mailbox specifier. Should be 1. + +Optional properties: +- interrupt-parent : interrupt source phandle. +- interrupts : interrupt number. The interrupt specifier format + depends on the interrupt controller parent. + +Example: + mbox: mailbox at 40400000 { + compatible = "xlnx,axi-mailbox-2.1"; + reg = <0x40400000 0x3c>; + interrupt-parent = <&intc>; + interrupts = <5>; + #mbox-cells = <1>; + }; + +Mailbox client +=============== +"mboxes" and the optional "mbox-names" (please see +Documentation/devicetree/bindings/mailbox/mailbox.txt for details). Each value +of the mboxes property should contain a phandle to the mailbox controller +device node and second argument is the channel index. It must be 0 (hardware +support only one channel). The equivalent "mbox-names" property value can be +used to give a name to the communication channel to be used by the client user. + +Example: + mclient0: mclient0 at 400 { + compatible = "client-1.0"; + reg = <0x400 0x10>; + mbox-names = "mbox"; + mboxes = <&mbox 0>; + }; -- 2.4.1