[PATCH 1/2] dt-bindings: arm: Add qcom specific hvc transport for SCMI

Nikunj Kela
2023-07-18T16:09:50Z

Introduce compatible "qcom,scmi-hvc-shmem" for SCMI
transport channel for Qualcomm virtual platforms.
The compatible mandates a shared memory channel.

Signed-off-by: Nikunj Kela <quic_nkela@quicinc.com>
---
.../bindings/firmware/arm,scmi.yaml | 69 +++++++++++++++++++
1 file changed, 69 insertions(+)

diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
index b138f3d23df8..605b1e997a85 100644
--- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
@@ -45,6 +45,9 @@ properties:
- description: SCMI compliant firmware with OP-TEE transport
items:
- const: linaro,scmi-optee
+ - description: SCMI compliant firmware with Qualcomm hvc/shmem transport
+ items:
+ - const: qcom,scmi-hvc-shmem

interrupts:
description:
@@ -321,6 +324,16 @@ else:
required:
- linaro,optee-channel-id

+ else:
+ if:
+ properties:
+ compatible:
+ contains:
+ const: qcom,scmi-hvc-shmem
+ then:
+ required:
+ - shmem
+
examples:
- |
firmware {
@@ -444,6 +457,62 @@ examples:
};
};

+ - |
+ firmware {
+ scmi_dpu {
+ compatible = "qcom,scmi-hvc-shmem";
+ shmem = <&shmem_dpu>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ scmi_pd_dpu: protocol@11 {
+ reg = <0x11>;
+ #power-domain-cells = <1>;
+ };
+ };
+
+ scmi_gpu {
+ compatible = "qcom,scmi-hvc-shmem";
+ shmem = <&shmem_gpu>;
+
+ interrupts = <GIC_SPI 931 IRQ_TYPE_EDGE_RISING>;
+ interrupt-names = "a2p";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ scmi_pd_gpu: protocol@11 {
+ reg = <0x11>;
+ #power-domain-cells = <1>;
+ };
+ };
+ };
+
+ soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ sram@95c00000 {
+ compatible = "mmio-sram";
+ reg = <0x95c00000 0x10000>;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ shmem_dpu: scmi-sram-dpu@95c00000 {
+ compatible = "arm,scmi-shmem";
+ reg = <0x95c00000 0x3f0>;
+ };
+
+ shmem_gpu: scmi-sram-gpu@95c00400 {
+ compatible = "arm,scmi-shmem";
+ reg = <0x95c00400 0x3f0>;
+ };
+ };
+ };
+
- |
firmware {
scmi {
--
2.17.1