[PATCH v1 1/3] dt-bindings: mmc: rockchip-dw-mshc: add rockchip,disable-runtime-pm

[Marco Schirrmeister]

Add a new 'rockchip,disable-runtime-pm' property to allow boards to
inhibit runtime power management. This is required for boards like the
NanoPi R76S where the bus timing becomes unstable if the controller
is runtime-suspended during idle periods.

Signed-off-by: Marco Schirrmeister <mschirrmeister at gmail.com>
---
 .../devicetree/bindings/mmc/rockchip-dw-mshc.yaml         | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
index acb9fb9a92cd..41f2644ca2ef 100644
--- a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
+++ b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
@@ -100,6 +100,14 @@ properties:
       If not specified, the host will do tuning for 360 times,
       namely tuning for each degree.
 
+  rockchip,disable-runtime-pm:
+    type: boolean
+    description:
+      Inhibit runtime power management. This is required for boards
+      where the bus timing becomes unstable if the controller is
+      runtime-suspended.
+
+
 required:
   - compatible
   - reg
-- 
2.52.0