[PATCH v3 1/2] dt-bindings: net/nfc: ti,trf7970a: Add ti,rx-gain-reduction-db option
From: Paul Geurts <hidden>
Date: 2025-06-26 14:12:48
Also in:
linux-devicetree, linux-wireless, lkml
Subsystem:
networking drivers, nfc subsystem, open firmware and flattened device tree bindings, the rest, ti trf7970a nfc driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Heidelberg, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Mark Greer
Add option to reduce the RX antenna gain to be able to reduce the sensitivity. Signed-off-by: Paul Geurts <redacted> --- Documentation/devicetree/bindings/net/nfc/ti,trf7970a.yaml | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/nfc/ti,trf7970a.yaml b/Documentation/devicetree/bindings/net/nfc/ti,trf7970a.yaml
index d0332eb76ad2..5f49bd9ac5e6 100644
--- a/Documentation/devicetree/bindings/net/nfc/ti,trf7970a.yaml
+++ b/Documentation/devicetree/bindings/net/nfc/ti,trf7970a.yaml@@ -55,6 +55,12 @@ properties: description: | Regulator for supply voltage to VIN pin + ti,rx-gain-reduction-db: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + Specify an RX gain reduction to reduce antenna sensitivity with 5dB per + increment, with a maximum of 15dB. Supported values: [0, 5, 10, 15]. + required: - compatible - interrupts
@@ -95,5 +101,6 @@ examples: irq-status-read-quirk; en2-rf-quirk; clock-frequency = <27120000>; + ti,rx-gain-reduction-db = <15>; }; };
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2.39.2