On 04/11/2022 00:03, Richard Acayan wrote:
The Snapdragon 670 uses SCM as for PSCI power management. Document the
appropriate compatible string for it.
SCM and SMC (and SMCCC) are closely related but not the same.
SMC (secure monitor call) is the standard mechanism of invoking
communication
with TZ.
SCM (secure channel manager) is a QC mechanism of communicating with their
vast vast vast HYP and TZ implementations, using HVC (hypervisor call)
and SMC
respectively.
SMCCC (secure monitor call calling convention) is a standard for how to
structure
SMCs and HVCs.
PSCI uses SMC calls on sdm670.
Konrad
Signed-off-by: Richard Acayan <mailingradian@xxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Reviewed-by: Guru Das Srinagesh <quic_gurus@xxxxxxxxxxx>
---
Documentation/devicetree/bindings/firmware/qcom,scm.yaml | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
index be1b5746eddb..25688571ee7c 100644
--- a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
+++ b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
@@ -41,6 +41,7 @@ properties:
- qcom,scm-sc7180
- qcom,scm-sc7280
- qcom,scm-sc8280xp
+ - qcom,scm-sdm670
- qcom,scm-sdm845
- qcom,scm-sdx55
- qcom,scm-sdx65
