From: Thierry Reding <treding@xxxxxxxxxx>
Document the interconnects property that is used to describe the paths
from and to system memory from and to the BPMP.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
.../firmware/nvidia,tegra186-bpmp.yaml | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.yaml b/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.yaml
index 0e4d51ba7aa1..fd642eeb8dde 100644
--- a/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.yaml
+++ b/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.yaml
@@ -43,6 +43,21 @@ properties:
- enum:
- nvidia,tegra186-bpmp
+ interconnects:
+ description: A list of phandle and specifier pairs that describe the
+ interconnect paths to and from the BPMP.
+ $ref: "/schemas/types.yaml#/definitions/phandle-array"
+
+ interconnect-names:
+ description: One string for each pair of phandle and specifier in the
+ "interconnects" property.
+ $ref: "/schemas/types.yaml#/definitions/string-array"
+ items:
+ - const: read
+ - const: write
+ - const: dma-mem # dma-read
+ - const: dma-write
+
iommus:
description: |
The phandle of the IOMMU and the IOMMU specifier. See ../iommu/iommu.txt
@@ -158,6 +173,12 @@ examples:
bpmp {
compatible = "nvidia,tegra186-bpmp";
+ interconnects = <&mc TEGRA186_MEMORY_CLIENT_BPMPR &emc>,
+ <&mc TEGRA186_MEMORY_CLIENT_BPMPW &emc>,
+ <&mc TEGRA186_MEMORY_CLIENT_BPMPDMAR &emc>,
+ <&mc TEGRA186_MEMORY_CLIENT_BPMPDMAW &emc>;
+ interconnect-names = "read", "write", "dma-mem", "dma-write";
+
iommus = <&smmu TEGRA186_SID_BPMP>;
mboxes = <&hsp_top0 TEGRA_HSP_MBOX_TYPE_DB TEGRA_HSP_DB_MASTER_BPMP>;
shmem = <&cpu_bpmp_tx &cpu_bpmp_rx>;
--
2.24.1
