diff mbox series

[v2,7/8] SUPPORT.md: Describe SCMI-SMC layer feature

Message ID 20240930114715.642978-8-andrei.cherechesu@oss.nxp.com (mailing list archive)
State New
Headers show
Series xen/arm: Add support for S32CC platforms and LINFlexD UART | expand

Commit Message

Andrei Cherechesu (OSS) Sept. 30, 2024, 11:47 a.m. UTC 
From: Andrei Cherechesu <andrei.cherechesu@nxp.com>

Describe the layer which enables SCMI over SMC calls forwarding
to EL3 FW if issued by Dom0. If the SCMI firmware node is not
found in Dom0's DT during initialization, it fails silently
as it's not mandatory.

The SCMI SMCs trapping at EL2 now lets Dom0 perform SCMI ops for
interacting with system-level resources almost as if it would be
running natively.

Signed-off-by: Andrei Cherechesu <andrei.cherechesu@nxp.com>
---
 SUPPORT.md | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/SUPPORT.md b/SUPPORT.md
index 23dd7e6424..d8ffddfc44 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -927,6 +927,14 @@  Add/Remove device tree nodes using a device tree overlay binary (.dtbo).
 
     Status: Tech Preview
 
+### Arm: SCMI over SMC calls forwarding to EL3 Firmware
+
+Enable SCMI calls using SMC as doorbell mechanism and Shared Memory for
+transport ("arm,scmi-smc" compatible only) to reach EL3 Firmware if issued
+by Dom0. Some platforms use SCMI for access to system-level resources.
+
+    Status: Supported
+
 ## Virtual Hardware, QEMU
 
 This section describes supported devices available in HVM mode using a