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authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-11 23:56:40 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-11 23:56:40 +0300
commitbfe9183fdcc0575a648d1401facc649888a1f49a (patch)
tree8d5a9decfb3342f89dbed46d555d8e1c4e30dde1 /Documentation
parentce01e871a1d44cc97cdd7e5ba6cb0c3613c15552 (diff)
parentf62092f6d77dfd9214ae753a24b76ba4ecd801d7 (diff)
downloadlinux-bfe9183fdcc0575a648d1401facc649888a1f49a.tar.xz
Merge branch 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox framework updates from Jassi Brar. * 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration: mailbox: Add Altera mailbox driver mailbox: check for bit set before polling Mailbox: Fix return value check in pcc_init()
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/mailbox/altera-mailbox.txt49
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diff --git a/Documentation/devicetree/bindings/mailbox/altera-mailbox.txt b/Documentation/devicetree/bindings/mailbox/altera-mailbox.txt
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+Altera Mailbox Driver
+=====================
+
+Required properties:
+- compatible : "altr,mailbox-1.0".
+- 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_tx: mailbox@0x100 {
+ compatible = "altr,mailbox-1.0";
+ reg = <0x100 0x8>;
+ interrupt-parent = < &gic_0 >;
+ interrupts = <5>;
+ #mbox-cells = <1>;
+ };
+
+ mbox_rx: mailbox@0x200 {
+ compatible = "altr,mailbox-1.0";
+ reg = <0x200 0x8>;
+ interrupt-parent = < &gic_0 >;
+ interrupts = <6>;
+ #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@0x400 {
+ compatible = "client-1.0";
+ reg = <0x400 0x10>;
+ mbox-names = "mbox-tx", "mbox-rx";
+ mboxes = <&mbox_tx 0>,
+ <&mbox_rx 0>;
+ };