[PATCH v4 1/2] dt-bindings: rng: bcm2835: document reset support

Álvaro Fernández Rojas
2021-02-24T08:23:51Z

Some devices may need to perform a reset before using the RNG, such as the
BCM6368.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
v4: pass dt_binding_check.
v3: make resets required if brcm,bcm6368-rng.
v2: document reset support.

.../devicetree/bindings/rng/brcm,bcm2835.yaml | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml b/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
index c147900f9041..9a74b5af1dbd 100644
--- a/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
+++ b/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
@@ -31,12 +31,24 @@ properties:
interrupts:
maxItems: 1

+ resets:
+ maxItems: 1
+
required:
- compatible
- reg

additionalProperties: false

+if:
+ properties:
+ compatible:
+ enum:
+ - brcm,bcm6368-rng
+then:
+ required:
+ - resets
+
examples:
- |
rng@7e104000 {
@@ -58,4 +70,6 @@ examples:

clocks = <&periph_clk 18>;
clock-names = "ipsec";
+
+ resets = <&periph_rst 4>;
};
--
2.20.1