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Subject[PATCH v4 4/5] dt-bindings: remoteproc: Add documentation for ZynqMP R5 rproc bindings
Date
Add binding for ZynqMP R5 OpenAMP.

Represent the RPU domain resources in one device node. Each RPU
processor is a subnode of the top RPU domain node.

Signed-off-by: Ben Levinsky <ben.levinsky@xilinx.com>
Signed-off-by: Jason Wu <j.wu@xilinx.com>
Signed-off-by: Wendy Liang <jliang@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---
Changes since v2:
- update zynqmp_r5 yaml parsing to not raise warnings for extra
information in children of R5 node. The warning "node has a unit
name, but no reg or ranges property" will still be raised though
as this particular node is needed to describe the
'#address-cells' and '#size-cells' information.
Changes since 3:
- remove warning '/example-0/rpu@ff9a0000/r5@0:
node has a unit name, but no reg or ranges property'
by adding reg to r5 node.
---

.../remoteproc/xilinx,zynqmp-r5-remoteproc.yaml | 127 +++++++++++++++++++++
1 file changed, 127 insertions(+)
create mode 100644 Documentation/devicetree/bindings/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml

diff --git a/Documentation/devicetree/bindings/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml b/Documentation/devicetree/bindings/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml
new file mode 100644
index 0000000..41520b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml
@@ -0,0 +1,127 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Xilinx R5 remote processor controller bindings
+
+description:
+ This document defines the binding for the remoteproc component that loads and
+ boots firmwares on the Xilinx Zynqmp and Versal family chipset.
+
+maintainers:
+ - Ed Mooring <ed.mooring@xilinx.com>
+ - Ben Levinsky <ben.levinsky@xilinx.com>
+
+properties:
+ compatible:
+ const: "xlnx,zynqmp-r5-remoteproc-1.0"
+
+ core_conf:
+ description:
+ R5 core configuration (valid string - split or lock-step)
+ maxItems: 1
+
+ interrupts:
+ description:
+ Interrupt mapping for remoteproc IPI. It is required if the
+ user uses the remoteproc driver with the RPMsg kernel driver.
+ maxItems: 6
+
+ memory-region:
+ maxItems: 4
+ minItems: 4
+ pnode-id:
+ maxItems: 1
+ mboxes:
+ maxItems: 2
+ mbox-names:
+ maxItems: 2
+
+ r5@0:
+ type: object
+ required:
+ - '#address-cells'
+ - '#size-cells'
+ - pnode-id
+examples:
+ - |
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+ rpu0vdev0vring0: rpu0vdev0vring0@3ed40000 {
+ no-map;
+ reg = <0x3ed40000 0x4000>;
+ };
+ rpu0vdev0vring1: rpu0vdev0vring1@3ed44000 {
+ no-map;
+ reg = <0x3ed44000 0x4000>;
+ };
+ rpu0vdev0buffer: rpu0vdev0buffer@3ed48000 {
+ no-map;
+ reg = <0x3ed48000 0x100000>;
+ };
+ rproc_0_reserved: rproc@3ed000000 {
+ no-map;
+ reg = <0x3ed00000 0x40000>;
+ };
+ };
+ rpu: rpu@ff9a0000 {
+ compatible = "xlnx,zynqmp-r5-remoteproc-1.0";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+ core_conf = "split";
+ reg = <0xFF9A0000 0x10000>;
+ r5_0: r5@0 {
+ ranges;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0xFF9A0100 0x1000>;
+ memory-region = <&rproc_0_reserved>, <&rpu0vdev0buffer>, <&rpu0vdev0vring0>, <&rpu0vdev0vring1>;
+ pnode-id = <0x7>;
+ mboxes = <&ipi_mailbox_rpu0 0>, <&ipi_mailbox_rpu0 1>;
+ mbox-names = "tx", "rx";
+ tcm_0_a: tcm_0@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0xFFE00000 0x10000>;
+ pnode-id = <0xf>;
+ };
+ tcm_0_b: tcm_0@1 {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ reg = <0xFFE20000 0x10000>;
+ pnode-id = <0x10>;
+ };
+ };
+ };
+
+
+ zynqmp_ipi1 {
+ compatible = "xlnx,zynqmp-ipi-mailbox";
+ interrupt-parent = <&gic>;
+ interrupts = <0 29 4>;
+ xlnx,ipi-id = <7>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ /* APU<->RPU0 IPI mailbox controller */
+ ipi_mailbox_rpu0: mailbox@ff90000 {
+ reg = <0xff990600 0x20>,
+ <0xff990620 0x20>,
+ <0xff9900c0 0x20>,
+ <0xff9900e0 0x20>;
+ reg-names = "local_request_region",
+ "local_response_region",
+ "remote_request_region",
+ "remote_response_region";
+ #mbox-cells = <1>;
+ xlnx,ipi-id = <1>;
+ };
+ };
+
+...
--
2.7.4
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