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Message-Id: <20241004121941.572539-2-neeraj.sanjaykale@nxp.com>
Date: Fri, 4 Oct 2024 17:49:40 +0530
From: Neeraj Sanjay Kale <neeraj.sanjaykale@....com>
To: marcel@...tmann.org,
luiz.dentz@...il.com,
robh@...nel.org,
krzk+dt@...nel.org,
conor+dt@...nel.org
Cc: linux-bluetooth@...r.kernel.org,
linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org,
amitkumar.karwar@....com,
rohit.fule@....com,
neeraj.sanjaykale@....com,
sherry.sun@....com,
ziniu.wang_1@....com,
haibo.chen@....com,
LnxRevLi@....com
Subject: [PATCH v3 1/2] dt-bindings: net: bluetooth: nxp: Add support for power save feature using GPIO
This adds a new optional device tree property device-wakeup-gpios, which specifies
the GPIO connected to BT_WAKE_IN pin of the NXP chipset.
If this property is defined, the driver will use this GPIO for driving chip
into sleep/wakeup state, else use the UART break signal by default.
Signed-off-by: Neeraj Sanjay Kale <neeraj.sanjaykale@....com>
---
v2: Rephrase description and use "-gpios". (Krzysztof, Rob)
v3: Use device-wakeup-gpios instead of h2c-ps-gpios. (Krzysztof)
---
.../devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml b/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml
index 37a65badb448..0a2d7baf5db3 100644
--- a/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml
+++ b/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml
@@ -34,6 +34,12 @@ properties:
firmware-name:
maxItems: 1
+ device-wakeup-gpios:
+ maxItems: 1
+ description:
+ Host-To-Chip power save mechanism is driven by this GPIO
+ connected to BT_WAKE_IN pin of the NXP chipset.
+
required:
- compatible
@@ -41,10 +47,12 @@ additionalProperties: false
examples:
- |
+ #include <dt-bindings/gpio/gpio.h>
serial {
bluetooth {
compatible = "nxp,88w8987-bt";
fw-init-baudrate = <3000000>;
firmware-name = "uartuart8987_bt_v0.bin";
+ device-wakeup-gpios = <&gpio 11 GPIO_ACTIVE_HIGH>;
};
};
--
2.25.1
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