diff mbox series

[U-Boot,v2,5/7] dt-bindings: ti_sci_pm_domains: Add support for exclusive and shared access

Message ID 20190522043224.14986-6-lokeshvutla@ti.com
State Superseded
Delegated to: Tom Rini
Headers show
Series arm: k3: Allow for exclusive and shared device requests | expand

Commit Message

Lokesh Vutla May 22, 2019, 4:32 a.m. UTC
TISCI protocol supports for enabling the device either with exclusive
permissions for the requesting host or with sharing across the hosts.
There are certain devices which are exclusive to Linux context and
there are certain devices that are shared across different host contexts.
So add support for getting this information from DT by increasing
the power-domain cells to 2.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
 doc/device-tree-bindings/power/ti,sci-pm-domain.txt | 11 +++++++++--
 include/dt-bindings/soc/ti,sci_pm_domain.h          |  9 +++++++++
 2 files changed, 18 insertions(+), 2 deletions(-)
 create mode 100644 include/dt-bindings/soc/ti,sci_pm_domain.h
diff mbox series


diff --git a/doc/device-tree-bindings/power/ti,sci-pm-domain.txt b/doc/device-tree-bindings/power/ti,sci-pm-domain.txt
index 0e190e20fe..72d9fbc833 100644
--- a/doc/device-tree-bindings/power/ti,sci-pm-domain.txt
+++ b/doc/device-tree-bindings/power/ti,sci-pm-domain.txt
@@ -17,8 +17,15 @@  child of the sysfw node.
 Required Properties:
 - compatible: Must be "ti,sci-pm-domain"
-- #power-domain-cells: Must be 1 so that an id can be provided in each
-		       device node.
+- #power-domain-cells: Can be one of the following:
+			1: Containing the device id of each node
+			2: First entry should be device id
+			   Second entry should be one of the floowing:
+			   TI_SCI_PD_EXCLUSIVE: To allow device to be
+						exclusively controlled by
+						the requesting hosts.
+			   TI_SCI_PD_SHARED: To allow device to be shared
+					     by multiple hosts.
 Example (AM65x):
diff --git a/include/dt-bindings/soc/ti,sci_pm_domain.h b/include/dt-bindings/soc/ti,sci_pm_domain.h
new file mode 100644
index 0000000000..8f2a7360b6
--- /dev/null
+++ b/include/dt-bindings/soc/ti,sci_pm_domain.h
@@ -0,0 +1,9 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+#define TI_SCI_PD_SHARED	0