linux-kernel - [PATCH v6 2/3] dt-bindings: net: bluetooth: Add NXP bluetooth support

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Message-Id: <20230301154514.3292154-3-neeraj.sanjaykale@nxp.com>
Date:   Wed,  1 Mar 2023 21:15:13 +0530
From:   Neeraj Sanjay Kale <neeraj.sanjaykale@....com>
To:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, marcel@...tmann.org,
        johan.hedberg@...il.com, luiz.dentz@...il.com,
        gregkh@...uxfoundation.org, jirislaby@...nel.org,
        alok.a.tiwari@...cle.com, hdanton@...a.com,
        ilpo.jarvinen@...ux.intel.com, leon@...nel.org
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        linux-serial@...r.kernel.org, amitkumar.karwar@....com,
        rohit.fule@....com, sherry.sun@....com, neeraj.sanjaykale@....com
Subject: [PATCH v6 2/3] dt-bindings: net: bluetooth: Add NXP bluetooth support

Add binding document for NXP bluetooth chipsets attached over UART.

Signed-off-by: Neeraj Sanjay Kale <neeraj.sanjaykale@....com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
v2: Resolved dt_binding_check errors. (Rob Herring)
v2: Modified description, added specific compatibility devices, corrected
indentations. (Krzysztof Kozlowski)
v3: Modified description, renamed file (Krzysztof Kozlowski)
v4: Resolved dt_binding_check errors, corrected indentation.
(Rob Herring, Krzysztof Kozlowski)
v5: Corrected serial device name in example. (Krzysztof Kozlowski)
---
 .../net/bluetooth/nxp,88w8987-bt.yaml         | 46 +++++++++++++++++++
 MAINTAINERS                                   |  6 +++
 2 files changed, 52 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml

diff --git a/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml b/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml
new file mode 100644
index 000000000000..b913ca59b489
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/bluetooth/nxp,88w8987-bt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP Bluetooth chips
+
+description:
+  This binding describes UART-attached NXP bluetooth chips.
+  These chips are dual-radio chips supporting WiFi and Bluetooth.
+  The bluetooth works on standard H4 protocol over 4-wire UART.
+  The RTS and CTS lines are used during FW download.
+  To enable power save mode, the host asserts break signal
+  over UART-TX line to put the chip into power save state.
+  De-asserting break wakes-up the BT chip.
+
+maintainers:
+  - Neeraj Sanjay Kale <neeraj.sanjaykale@....com>
+
+properties:
+  compatible:
+    enum:
+      - nxp,88w8987-bt
+      - nxp,88w8997-bt
+
+  fw-init-baudrate:
+    description:
+      Chip baudrate after FW is downloaded and initialized.
+      This property depends on the module vendor's
+      configuration. If this property is not specified,
+      115200 is set as default.
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    serial {
+        bluetooth {
+            compatible = "nxp,88w8987-bt";
+            fw-init-baudrate = <3000000>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 32dd41574930..030ec6fe89df 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -22835,6 +22835,12 @@ L:	linux-mm@...ck.org
 S:	Maintained
 F:	mm/zswap.c
 
+NXP BLUETOOTH WIRELESS DRIVERS
+M:	Amitkumar Karwar <amitkumar.karwar@....com>
+M:	Neeraj Kale <neeraj.sanjaykale@....com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml
+
 THE REST
 M:	Linus Torvalds <torvalds@...ux-foundation.org>
 L:	linux-kernel@...r.kernel.org
-- 
2.34.1