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authorJoseph Lo <josephl@nvidia.com>2016-07-05 12:04:22 +0300
committerThierry Reding <treding@nvidia.com>2016-11-15 17:52:58 +0300
commite983940270f10fe8551baf0098be76ea478294a3 (patch)
tree4faddf10c6ee4dac5e7f6ca425fd3bc8927faf76 /include/dt-bindings/mailbox
parent15326c1ad8b357fe8684a1d00c094b4f985c1808 (diff)
downloadlinux-e983940270f10fe8551baf0098be76ea478294a3.tar.xz
dt-bindings: mailbox: Add Tegra HSP binding
Add DT binding for the Hardware Synchronization Primitives (HSP). The HSP is designed for the processors to share resources and communicate with one another. A set of hardware synchronization primitives for interprocessor communication (IPC) is provided. IPC protocols can use use these hardware synchronization primitives when operating between processors in an AMP configuration. Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'include/dt-bindings/mailbox')
-rw-r--r--include/dt-bindings/mailbox/tegra186-hsp.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/include/dt-bindings/mailbox/tegra186-hsp.h b/include/dt-bindings/mailbox/tegra186-hsp.h
new file mode 100644
index 000000000000..f5d66e5f5f10
--- /dev/null
+++ b/include/dt-bindings/mailbox/tegra186-hsp.h
@@ -0,0 +1,24 @@
+/*
+ * This header provides constants for binding nvidia,tegra186-hsp.
+ */
+
+#ifndef _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H
+#define _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H
+
+/*
+ * These define the type of mailbox that is to be used (doorbell, shared
+ * mailbox, shared semaphore or arbitrated semaphore).
+ */
+#define TEGRA_HSP_MBOX_TYPE_DB 0x0
+#define TEGRA_HSP_MBOX_TYPE_SM 0x1
+#define TEGRA_HSP_MBOX_TYPE_SS 0x2
+#define TEGRA_HSP_MBOX_TYPE_AS 0x3
+
+/*
+ * These defines represent the bit associated with the given master ID in the
+ * doorbell registers.
+ */
+#define TEGRA_HSP_DB_MASTER_CCPLEX 17
+#define TEGRA_HSP_DB_MASTER_BPMP 19
+
+#endif