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[35.189.131.103]) by smtp.gmail.com with ESMTPSA id q8-20020a170902a3c800b00186ad73e2d5sm5950422plb.208.2022.11.07.21.56.01 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 07 Nov 2022 21:56:01 -0800 (PST) Received: from martinet by pc-zest.atmarktech with local (Exim 4.96) (envelope-from ) id 1osHaa-0098Kr-1g; Tue, 08 Nov 2022 14:56:00 +0900 From: Dominique Martinet To: Marcel Holtmann , Rob Herring , Krzysztof Kozlowski , Luiz Augusto von Dentz , Johan Hedberg Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-bluetooth@vger.kernel.org, Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S . Miller" , mizo@atmark-techno.com, Dominique Martinet Subject: [RFC PATCH 1/2] dt-bindings: net: h4-bluetooth: add new bindings for hci_h4 Date: Tue, 8 Nov 2022 14:55:30 +0900 Message-Id: <20221108055531.2176793-2-dominique.martinet@atmark-techno.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221108055531.2176793-1-dominique.martinet@atmark-techno.com> References: <20221108055531.2176793-1-dominique.martinet@atmark-techno.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_PASS, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1748907732625427016?= X-GMAIL-MSGID: =?utf-8?q?1748907732625427016?= Add devicetree binding to support defining a bluetooth device using the h4 uart protocol This was tested with a NXP wireless+BT AW-XM458 module, but might benefit others as the H4 protocol seems often used. Signed-off-by: Dominique Martinet --- .../devicetree/bindings/net/h4-bluetooth.yaml | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/h4-bluetooth.yaml diff --git a/Documentation/devicetree/bindings/net/h4-bluetooth.yaml b/Documentation/devicetree/bindings/net/h4-bluetooth.yaml new file mode 100644 index 000000000000..5d11b89ca386 --- /dev/null +++ b/Documentation/devicetree/bindings/net/h4-bluetooth.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/h4-bluetooth.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: H4 Bluetooth + +maintainers: + - Dominique Martinet + +description: + H4 is a common bluetooth over uart protocol. + For example, the AW-XM458 is a WiFi + BT module where the WiFi part is + connected over PCI (M.2), while BT is connected over serial speaking + the H4 protocol. Its firmware is sent on the PCI side. + +properties: + compatible: + enum: + - nxp,aw-xm458-bt + + max-speed: true + +required: + - compatible + +additionalProperties: false + +examples: + - | + #include + #include + + uart1 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_uart1>; + assigned-clocks = <&clk IMX8MP_CLK_UART1>; + assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_80M>; + status = "okay"; + fsl,dte-mode = <1>; + fsl,uart-has-rtscts; + + + bluetooth { + compatible = "nxp,aw-xm458-bt"; + max-speed = <3000000>; + }; + };