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([188.163.112.79]) by smtp.gmail.com with ESMTPSA id r13-20020aa7d58d000000b00514b2a9ce60sm13073283edq.81.2023.06.19.07.36.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jun 2023 07:36:30 -0700 (PDT) From: Svyatoslav Ryhel To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Wolfram Sang , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , Svyatoslav Ryhel Cc: linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/2] dt-bindings: i2c: add binding for i2c-hotplug-gpio Date: Mon, 19 Jun 2023 17:36:10 +0300 Message-Id: <20230619143611.24482-2-clamor95@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230619143611.24482-1-clamor95@gmail.com> References: <20230619143611.24482-1-clamor95@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham 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?1769142700072318670?= X-GMAIL-MSGID: =?utf-8?q?1769142700072318670?= Document device tree schema which describes hot-pluggable via GPIO i2c bus. Signed-off-by: Svyatoslav Ryhel --- .../bindings/i2c/i2c-hotplug-gpio.yaml | 68 +++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-hotplug-gpio.yaml diff --git a/Documentation/devicetree/bindings/i2c/i2c-hotplug-gpio.yaml b/Documentation/devicetree/bindings/i2c/i2c-hotplug-gpio.yaml new file mode 100644 index 000000000000..74544687a2b8 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-hotplug-gpio.yaml @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/i2c-hotplug-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO detected hot-plugged I2C bus + +maintainers: + - Michał Mirosław + +description: | + Driver for hot-plugged I2C busses, where some devices on a bus + are hot-pluggable and their presence is indicated by GPIO line. + +properties: + $nodename: + pattern: "^i2c-(.*)?" + + compatible: + items: + - const: i2c-hotplug-gpio + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + interrupts-extended: + minItems: 1 + + detect-gpios: + maxItems: 1 + + i2c-parent: + maxItems: 1 + +required: + - compatible + - "#address-cells" + - "#size-cells" + - interrupts-extended + - detect-gpios + - i2c-parent + +unevaluatedProperties: false + +examples: + - | + /* + * Asus Transformers use I2C hotplug for attachable dock keyboard + */ + #include + #include + + i2c-dock { + compatible = "i2c-hotplug-gpio"; + + #address-cells = <1>; + #size-cells = <0>; + + interrupts-extended = <&gpio 164 IRQ_TYPE_EDGE_BOTH>; + detect-gpios = <&gpio 164 1>; + + i2c-parent = <&{/i2c@7000c400}>; + }; +...