linux-kernel - [PATCH 1/2] dt-bindings: misc: add binding for generic ripple counter

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Date:   Fri, 26 Feb 2021 15:14:10 +0100
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>, linux-clk@...r.kernel.org,
        Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: [PATCH 1/2] dt-bindings: misc: add binding for generic ripple counter

While a ripple counter can not usually be interfaced with (directly)
from software, it may still be a crucial component in a board
layout. To prevent its input clock from being disabled by the clock
core because it apparently has no consumer, one needs to be able to
represent that consumer in DT.

Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 Documentation/devicetree/bindings/misc/ripple-ctr.txt | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/ripple-ctr.txt

diff --git a/Documentation/devicetree/bindings/misc/ripple-ctr.txt b/Documentation/devicetree/bindings/misc/ripple-ctr.txt
new file mode 100644
index 000000000000..1497d3a237a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/ripple-ctr.txt
@@ -0,0 +1,8 @@
+Generic ripple counter
+
+A ripple counter is a simple component that can for example be used to
+delay propagation of a signal.
+
+Required properties:
+- compatible: Must be "linux,ripple-ctr".
+- clocks: Input clock specifier. Refer to common clock bindings.
-- 
2.29.2