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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-25 18:38:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-25 18:38:40 -0700
commit9390bd0d14b4585f7ac2df15ff5f52af182251e1 (patch)
tree7e61faeb498ee8faf05ea0d413c490ff3cce3547 /Documentation
parentda996f7310eb7fa8d49223936111d3e86b72e2f3 (diff)
parent7d641938aa2ae433a97cc65ec622547cfe08f2ed (diff)
Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar. * 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration: mailbox/bcm2835: Fix mailbox full detection. dt: mailbox: Remove 'mbox-names property is discouraged' message from binding mailbox: Add ability for clients to request channels by name mailbox: Enable BCM2835 mailbox support dt/bindings: Add binding for the BCM2835 mailbox driver mailbox: Fix up error handling in mbox_request_channel() mailbox: Make mbox_chan_ops const mailbox: altera: Add dependency on HAS_IOMEM
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/mailbox/brcm,bcm2835-mbox.txt26
-rw-r--r--Documentation/devicetree/bindings/mailbox/mailbox.txt10
2 files changed, 28 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/mailbox/brcm,bcm2835-mbox.txt b/Documentation/devicetree/bindings/mailbox/brcm,bcm2835-mbox.txt
new file mode 100644
index 000000000000..e893615ef635
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/brcm,bcm2835-mbox.txt
@@ -0,0 +1,26 @@
+Broadcom BCM2835 VideoCore mailbox IPC
+
+Required properties:
+
+- compatible: Should be "brcm,bcm2835-mbox"
+- reg: Specifies base physical address and size of the registers
+- interrupts: The interrupt number
+ See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
+- #mbox-cells: Specifies the number of cells needed to encode a mailbox
+ channel. The value shall be 0, since there is only one
+ mailbox channel implemented by the device.
+
+Example:
+
+mailbox: mailbox@7e00b800 {
+ compatible = "brcm,bcm2835-mbox";
+ reg = <0x7e00b880 0x40>;
+ interrupts = <0 1>;
+ #mbox-cells = <0>;
+};
+
+firmware: firmware {
+ compatible = "raspberrypi,firmware";
+ mboxes = <&mailbox>;
+ #power-domain-cells = <1>;
+};
diff --git a/Documentation/devicetree/bindings/mailbox/mailbox.txt b/Documentation/devicetree/bindings/mailbox/mailbox.txt
index 1a2cd3d266db..be05b9746c69 100644
--- a/Documentation/devicetree/bindings/mailbox/mailbox.txt
+++ b/Documentation/devicetree/bindings/mailbox/mailbox.txt
@@ -22,17 +22,11 @@ Required property:
- mboxes: List of phandle and mailbox channel specifiers.
Optional property:
-- mbox-names: List of identifier strings for each mailbox channel
- required by the client. The use of this property
- is discouraged in favor of using index in list of
- 'mboxes' while requesting a mailbox. Instead the
- platforms may define channel indices, in DT headers,
- to something legible.
+- mbox-names: List of identifier strings for each mailbox channel.
Example:
pwr_cntrl: power {
...
mbox-names = "pwr-ctrl", "rpc";
- mboxes = <&mailbox 0
- &mailbox 1>;
+ mboxes = <&mailbox 0 &mailbox 1>;
};