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[v5,1/2] dt-bindings: net: bluetooth: nxp: Add support for power save feature using GPIO

Message ID 20241008091159.650531-2-neeraj.sanjaykale@nxp.com (mailing list archive)
State Accepted
Commit 99ba211a9b71ba81535045d7f46cefc0c738ddc2
Headers show
Series Bluetooth: btnxpuart: Add GPIO mechanism to | expand

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Commit Message

Neeraj Sanjay Kale Oct. 8, 2024, 9:11 a.m. UTC 
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@nxp.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
---
v2: Rephrase description and use "-gpios". (Krzysztof, Rob)
v3: Use device-wakeup-gpios instead of h2c-ps-gpios. (Krzysztof)
v4: Add Reviewed-by (Rob)
---
 .../devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)
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Patch

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>;
         };
     };