[v6,3/4] dt-bindings: mailbox: Introduce Qualcomm APCS global binding

Message ID 20170509194703.28871-3-bjorn.andersson@linaro.org
State Accepted
Commit f16c176e58d50e21d8b29323beee95e0771b1281
Headers show
Series
  • Untitled series #1364
Related show

Commit Message

Bjorn Andersson May 9, 2017, 7:47 p.m.
Introduce a binding for the Qualcomm APCS global block, exposing a
mailbox for invoking interrupts on remote processors in the system.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

---

Changes since v5:
- None

 .../bindings/mailbox/qcom,apcs-kpss-global.txt     | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt

-- 
2.12.0

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Comments

Rob Herring May 13, 2017, 12:02 a.m. | #1
On Tue, May 09, 2017 at 12:47:02PM -0700, Bjorn Andersson wrote:
> Introduce a binding for the Qualcomm APCS global block, exposing a

> mailbox for invoking interrupts on remote processors in the system.

> 

> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

> ---

> 

> Changes since v5:

> - None

> 

>  .../bindings/mailbox/qcom,apcs-kpss-global.txt     | 46 ++++++++++++++++++++++

>  1 file changed, 46 insertions(+)

>  create mode 100644 Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt


Acked-by: Rob Herring <robh@kernel.org>

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Patch

diff --git a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt
new file mode 100644
index 000000000000..eaa9e780f412
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt
@@ -0,0 +1,46 @@ 
+Binding for the Qualcomm APCS global block
+==========================================
+
+This binding describes the APCS "global" block found in various Qualcomm
+platforms.
+
+- compatible:
+	Usage: required
+	Value type: <string>
+	Definition: must be one of:
+		    "qcom,msm8916-apcs-kpss-global",
+		    "qcom,msm8996-apcs-hmss-global"
+
+- reg:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: must specify the base address and size of the global block
+
+- #mbox-cells:
+	Usage: required
+	Value type: <u32>
+	Definition: as described in mailbox.txt, must be 1
+
+
+= EXAMPLE
+The following example describes the APCS HMSS found in MSM8996 and part of the
+GLINK RPM referencing the "rpm_hlos" doorbell therein.
+
+	apcs_glb: mailbox@9820000 {
+		compatible = "qcom,msm8996-apcs-hmss-global";
+		reg = <0x9820000 0x1000>;
+
+		#mbox-cells = <1>;
+	};
+
+	rpm-glink {
+		compatible = "qcom,glink-rpm";
+
+		interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
+
+		qcom,rpm-msg-ram = <&rpm_msg_ram>;
+
+		mboxes = <&apcs_glb 0>;
+		mbox-names = "rpm_hlos";
+	};
+