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authorBjorn Andersson <bjorn.andersson@linaro.org>2017-05-28 02:14:03 +0300
committerJassi Brar <jaswinder.singh@linaro.org>2017-06-14 15:17:13 +0300
commitf16c176e58d50e21d8b29323beee95e0771b1281 (patch)
tree3296458f3aa69a6362d71afc7c39253000fe64cb /Documentation/devicetree/bindings/mailbox
parentb7133d6fcd9a9eb4633357d4a27430d4e0c794ad (diff)
downloadlinux-f16c176e58d50e21d8b29323beee95e0771b1281.tar.xz
dt-bindings: mailbox: Introduce Qualcomm APCS global binding
Introduce a binding for the Qualcomm APCS global block, exposing a mailbox for invoking interrupts on remote processors in the system. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/mailbox')
-rw-r--r--Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt46
1 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt b/Documentation/devicetree/bindings/mailbox/qcom,apcs-kpss-global.txt
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+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";
+ };
+