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authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-07 10:24:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-07 10:24:07 -0700
commit21c19bc7ee256094aba74af8d91a824da4bc36af (patch)
tree85c058588fc097fe6fd0f00caa200c7bd5ed658e /Documentation
parentb6ffe9ba46016f8351896ccee33bebcd0e5ea7c0 (diff)
parent25bfee16d5a3158086273cc51110c7470144c842 (diff)
downloadlinux-21c19bc7ee256094aba74af8d91a824da4bc36af.tar.bz2
Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar: - Minor improvement : avoid requiring unnecessary startup/shutdown callback that many drivers seem to not need - New controller driver for Qualcomm's APCS IPC * 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration: mailbox: Introduce Qualcomm APCS IPC driver dt-bindings: mailbox: Introduce Qualcomm APCS global binding mailbox: Make startup and shutdown ops optional
Diffstat (limited to 'Documentation')
-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";
+ };
+