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Message-Id: <61df03dd1c014bf3b0a4a3fbef980665ce53d849.1454967957.git.dhdang@apm.com>
Date: Mon, 8 Feb 2016 14:04:08 -0800
From: Duc Dang <dhdang@....com>
To: Jassi Brar <jassisinghbrar@...il.com>,
Rob Herring <robh@...nel.org>
Cc: Paul Bolle <pebolle@...cali.nl>, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
patches@....com, Duc Dang <dhdang@....com>, Feng Kan <fkan@....com>
Subject: [PATCH v5 2/3] Documentation: mailbox: Add APM X-Gene SLIMpro mailbox dts documentation
This adds the APM X-Gene SLIMpro mailbox device tree
node documentation.
Signed-off-by: Feng Kan <fkan@....com>
Signed-off-by: Duc Dang <dhdang@....com>
Acked-by: Rob Herring <robh@...nel.org>
---
Changes since v4:
- Rebase over v4.5-rc1
- Fix number of total interrupts in
introduction text
- Change node name to mailbox@...40000
Changes since v3:
- Rebase over v4.4
- Change number of mailbox IRQs to 8
- Fix white spaces, typos.
.../bindings/mailbox/xgene-slimpro-mailbox.txt | 35 ++++++++++++++++++++++
1 file changed, 35 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mailbox/xgene-slimpro-mailbox.txt
diff --git a/Documentation/devicetree/bindings/mailbox/xgene-slimpro-mailbox.txt b/Documentation/devicetree/bindings/mailbox/xgene-slimpro-mailbox.txt
new file mode 100644
index 0000000..e46451b
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/xgene-slimpro-mailbox.txt
@@ -0,0 +1,35 @@
+The APM X-Gene SLIMpro mailbox is used to communicate messages between
+the ARM64 processors and the Cortex M3 (dubbed SLIMpro). It uses a simple
+interrupt based door bell mechanism and can exchange simple messages using the
+internal registers.
+
+There are total of 8 interrupts in this mailbox. Each used for an individual
+door bell (or mailbox channel).
+
+Required properties:
+- compatible: Should be as "apm,xgene-slimpro-mbox".
+
+- reg: Contains the mailbox register address range.
+
+- interrupts: 8 interrupts must be from 0 to 7, interrupt 0 define the
+ the interrupt for mailbox channel 0 and interrupt 1 for
+ mailbox channel 1 and so likewise for the reminder.
+
+- #mbox-cells: only one to specify the mailbox channel number.
+
+Example:
+
+Mailbox Node:
+ mailbox: mailbox@...40000 {
+ compatible = "apm,xgene-slimpro-mbox";
+ reg = <0x0 0x10540000 0x0 0xa000>;
+ #mbox-cells = <1>;
+ interrupts = <0x0 0x0 0x4>,
+ <0x0 0x1 0x4>,
+ <0x0 0x2 0x4>,
+ <0x0 0x3 0x4>,
+ <0x0 0x4 0x4>,
+ <0x0 0x5 0x4>,
+ <0x0 0x6 0x4>,
+ <0x0 0x7 0x4>,
+ };
--
1.9.1
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