xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration

Browse Source 
Pull mailbox framework updates from Jassi Brar.

* 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
  Mailbox: Add support for Platform Communication Channel
  mailbox/omap: adapt to the new mailbox framework
  mailbox: add tx_prepare client callback
  mailbox: Don't unnecessarily re-arm the polling timer
This commit is contained in:
Linus Torvalds
2014-12-11 12:09:37 -08:00
parent b859e7d13b 86c22f8c9a
commit 14ba9a2e4b
10 changed files with 702 additions and 189 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
Documentation/devicetree/bindings/mailbox/omap-mailbox.txt
View File

@@ -43,6 +43,9 @@ Required properties:
device. The format is dependent on which interrupt
controller the OMAP device uses
- ti,hwmods: Name of the hwmod associated with the mailbox
- #mbox-cells: Common mailbox binding property to identify the number
of cells required for the mailbox specifier. Should be
1
- ti,mbox-num-users: Number of targets (processor devices) that the mailbox
device can interrupt
- ti,mbox-num-fifos: Number of h/w fifo queues within the mailbox IP block
@@ -72,6 +75,18 @@ data that represent the following:
Cell #3 (usr_id) - mailbox user id for identifying the interrupt line
associated with generating a tx/rx fifo interrupt.
Mailbox Users:
==============
A device needing to communicate with a target processor device should specify
them using the common mailbox binding properties, "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 an args specifier that will be the phandle to
the intended sub-mailbox child node to be used for communication. 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:
--------
@@ -81,6 +96,7 @@ mailbox: mailbox@4a0f4000 {
reg = <0x4a0f4000 0x200>;
interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
ti,hwmods = "mailbox";
#mbox-cells = <1>;
ti,mbox-num-users = <3>;
ti,mbox-num-fifos = <8>;
mbox_ipu: mbox_ipu {
@@ -93,12 +109,19 @@ mailbox: mailbox@4a0f4000 {
};
};
dsp {
...
mboxes = <&mailbox &mbox_dsp>;
...
};
/* AM33xx */
mailbox: mailbox@480C8000 {
compatible = "ti,omap4-mailbox";
reg = <0x480C8000 0x200>;
interrupts = <77>;
ti,hwmods = "mailbox";
#mbox-cells = <1>;
ti,mbox-num-users = <4>;
ti,mbox-num-fifos = <8>;
mbox_wkupm3: wkup_m3 {