ARM: tegra: adapt to latest HSP DT binding
The DT binding for the Tegra186 HSP module apparently wasn't quite final
when I posted initial U-Boot support for it. Add the final DT binding doc
and adapt all code and DT files to match it.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/doc/device-tree-bindings/mailbox/nvidia,tegra186-hsp.txt b/doc/device-tree-bindings/mailbox/nvidia,tegra186-hsp.txt
new file mode 100644
index 0000000..a915238
--- /dev/null
+++ b/doc/device-tree-bindings/mailbox/nvidia,tegra186-hsp.txt
@@ -0,0 +1,52 @@
+NVIDIA Tegra Hardware Synchronization Primitives (HSP)
+
+The HSP modules are used for the processors to share resources and communicate
+together. It provides a set of hardware synchronization primitives for
+interprocessor communication. So the interprocessor communication (IPC)
+protocols can use hardware synchronization primitives, when operating between
+two processors not in an SMP relationship.
+
+The features that HSP supported are shared mailboxes, shared semaphores,
+arbitrated semaphores and doorbells.
+
+Required properties:
+- name : Should be hsp
+- compatible
+ Array of strings.
+ one of:
+ - "nvidia,tegra186-hsp"
+- reg : Offset and length of the register set for the device.
+- interrupt-names
+ Array of strings.
+ Contains a list of names for the interrupts described by the interrupt
+ property. May contain the following entries, in any order:
+ - "doorbell"
+ Users of this binding MUST look up entries in the interrupt property
+ by name, using this interrupt-names property to do so.
+- interrupts
+ Array of interrupt specifiers.
+ Must contain one entry per entry in the interrupt-names property,
+ in a matching order.
+- #mbox-cells : Should be 2.
+
+The mbox specifier of the "mboxes" property in the client node should
+contain two data. The first one should be the HSP type and the second
+one should be the ID that the client is going to use. Those information
+can be found in the following file.
+
+- <dt-bindings/mailbox/tegra186-hsp.h>.
+
+Example:
+
+hsp_top0: hsp@3c00000 {
+ compatible = "nvidia,tegra186-hsp";
+ reg = <0x0 0x03c00000 0x0 0xa0000>;
+ interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "doorbell";
+ #mbox-cells = <2>;
+};
+
+client {
+ ...
+ mboxes = <&hsp_top0 HSP_MBOX_TYPE_DB HSP_DB_MASTER_XXX>;
+};