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From:   Hakan Jansson <hakan.jansson@infineon.com>
CC:     Hakan Jansson <hakan.jansson@infineon.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        <netdev@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>,
        Marcel Holtmann <marcel@holtmann.org>,
        Johan Hedberg <johan.hedberg@gmail.com>,
        "Luiz Augusto von Dentz" <luiz.dentz@gmail.com>,
        <linux-bluetooth@vger.kernel.org>
Subject: [PATCH 1/2] dt-bindings: net: broadcom-bluetooth: Add property for autobaud mode
Date:   Wed, 4 May 2022 11:03:39 +0200
Message-ID: <64b59ca66cc22e6433a044e7bba2b3e97c810dc2.1651647576.git.hakan.jansson@infineon.com>
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Some devices (e.g. CYW5557x) require autobaud mode to enable FW loading.
Autobaud mode can also be required on some boards where the controller
device is using a non-standard baud rate when first powered on.

This patch adds a property, "brcm,uses-autobaud-mode", to enable autobaud
mode selection.

Signed-off-by: Hakan Jansson <hakan.jansson@infineon.com>
---
 .../devicetree/bindings/net/broadcom-bluetooth.yaml        | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/broadcom-bluetooth.yaml b/Documentation/devicetree/bindings/net/broadcom-bluetooth.yaml
index 5aac094fd217..26bba3f1c935 100644
--- a/Documentation/devicetree/bindings/net/broadcom-bluetooth.yaml
+++ b/Documentation/devicetree/bindings/net/broadcom-bluetooth.yaml
@@ -92,6 +92,13 @@ properties:
        pcm-sync-mode: slave, master
        pcm-clock-mode: slave, master
 
+  brcm,uses-autobaud-mode:
+    type: boolean
+    description: >
+      The controller should be started in autobaud mode by asserting
+      BT_UART_CTS_N (i.e. host RTS) during startup. Only HCI commands supported
+      in autobaud mode should be used until patch FW has been loaded.
+
   interrupts:
     items:
       - description: Handle to the line HOST_WAKE used to wake
-- 
2.25.1