[PATCH 1/2] devicetree: bindings: mux: reg-mux: Add support for new property 'mux-reg-masks-state'
From: Chintan Vankar <hidden>
Date: 2025-06-05 06:34:41
Also in:
lkml
Subsystem:
multiplexer subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Peter Rosin, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
The DT binding for reg-mux currenly requires specifying register offset and masks in the "mux-reg-masks" property, while corresponding register values are defined in the "idle-states" property. This approach imposes a constraint where "mux-reg-masks" and "idle-states" must remain synchroniszed, adding complexity when configuring specific registers or a set of registers with large memory spaces. Add support of a new property "mux-reg-masks-state" to remove this constraint, allowing offset, mask and value to be specified together as a tuple. Signed-off-by: Chintan Vankar <redacted> --- .../devicetree/bindings/mux/reg-mux.yaml | 32 +++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/mux/reg-mux.yaml b/Documentation/devicetree/bindings/mux/reg-mux.yaml
index dc4be092fc2f..b029e2f28df0 100644
--- a/Documentation/devicetree/bindings/mux/reg-mux.yaml
+++ b/Documentation/devicetree/bindings/mux/reg-mux.yaml@@ -32,11 +32,39 @@ properties: - description: pre-shifted bitfield mask description: Each entry pair describes a single mux control. - idle-states: true + idle-states: + description: Each entry describes mux register state. + + mux-reg-masks-state: + $ref: /schemas/types.yaml#/definitions/uint32-matrix + items: + items: + - description: register offset + - description: pre-shifted bitfield mask + - description: register value to be set + description: This property is an extension of mux-reg-masks which + allows specifying register offset, mask and register + value to be set. + +allOf: + - oneOf: + - required: [mux-reg-masks] + - required: [mux-reg-masks-state] + + - if: + required: [mux-reg-masks-state] + then: + not: + required: [idle-states] + + - if: + required: [mux-reg-masks] + then: + properties: + idle-states: true required: - compatible - - mux-reg-masks - '#mux-control-cells' additionalProperties: false
--
2.34.1