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From: Hakan Jansson <hakan.jansson@infineon.com>
To: unlisted-recipients:; (no To-header on input)
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 v2 1/2] dt-bindings: net: broadcom-bluetooth: Add property for autobaud mode
Date: Fri, 20 May 2022 17:07:13 +0200	[thread overview]
Message-ID: <cb20a6f49c91521d54c847ee4dc14451b0ee91dd.1653057480.git.hakan.jansson@infineon.com> (raw)
In-Reply-To: <cover.1653057480.git.hakan.jansson@infineon.com>

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>
---
V1 -> V2: Modify property description

 .../devicetree/bindings/net/broadcom-bluetooth.yaml      | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/broadcom-bluetooth.yaml b/Documentation/devicetree/bindings/net/broadcom-bluetooth.yaml
index 5aac094fd217..a29f059c21cc 100644
--- a/Documentation/devicetree/bindings/net/broadcom-bluetooth.yaml
+++ b/Documentation/devicetree/bindings/net/broadcom-bluetooth.yaml
@@ -92,6 +92,15 @@ properties:
        pcm-sync-mode: slave, master
        pcm-clock-mode: slave, master
 
+  brcm,uses-autobaud-mode:
+    type: boolean
+    description: >
+      Setting this property will make the host (driver) assert the controller
+      chip's BT_UART_CTS_N prior to asserting BT_REG_ON. This will make the
+      controller start up in autobaud mode. The controller will then detect the
+      baud rate of the first incoming (HCI Reset) command from the host and
+      subsequently use that baud rate.
+
   interrupts:
     items:
       - description: Handle to the line HOST_WAKE used to wake
-- 
2.25.1


  reply	other threads:[~2022-05-20 15:07 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-20 15:07 [PATCH v2 0/2] Bluetooth: hci_bcm: Autobaud mode support Hakan Jansson
2022-05-20 15:07 ` Hakan Jansson [this message]
2022-05-20 16:09   ` bluez.test.bot
2022-05-22  8:14   ` [PATCH v2 1/2] dt-bindings: net: broadcom-bluetooth: Add property for autobaud mode Krzysztof Kozlowski
2022-05-23  9:21     ` Hakan Jansson
2022-05-30  7:44       ` Krzysztof Kozlowski
2022-05-20 15:07 ` [PATCH v2 2/2] Bluetooth: hci_bcm: Add support for FW loading in " Hakan Jansson

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