From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [v4,2/6] dt-bindings: usb: add binding for Type-B GPIO connector driver From: Chunfeng Yun Message-Id: <1556261237-13823-3-git-send-email-chunfeng.yun@mediatek.com> Date: Fri, 26 Apr 2019 14:47:13 +0800 To: Rob Herring , Greg Kroah-Hartman , Heikki Krogerus Cc: Mark Rutland , Chunfeng Yun , Matthias Brugger , Adam Thomson , Li Jun , Badhri Jagan Sridharan , Hans de Goede , Andy Shevchenko , Min Guo , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Biju Das , Linus Walleij List-ID: SXQncyB1c2VkIHRvIHN1cHBvcnQgZHVhbCByb2xlIHN3aXRjaCB2aWEgR1BJTyB3aGVuIHVzZSBU eXBlLUIKcmVjZXB0YWNsZSwgdHlwaWNhbGx5IHRoZSBVU0IgSUQgcGluIGlzIGNvbm5lY3RlZCB0 byBhbiBpbnB1dApHUElPIHBpbgoKU2lnbmVkLW9mZi1ieTogQ2h1bmZlbmcgWXVuIDxjaHVuZmVu Zy55dW5AbWVkaWF0ZWsuY29tPgotLS0KdjQgbm8gY2hhbmdlcwoKdjMgY2hhbmdlczoKIDEuIHRy ZWF0IHR5cGUtQiBjb25uZWN0b3IgYXMgYSB2aXJ0dWFsIGRldmljZSwgYnV0IG5vdCBjaGlsZCBk ZXZpY2Ugb2YKICAgIFVTQiBjb250cm9sbGVyJ3MKCnYyIGNoYW5nZXM6CiAgMS4gbmV3IHBhdGNo IHRvIG1ha2UgYmluZGluZyBjbGVhciBzdWdnZXN0ZWQgYnkgSGFucwotLS0KIC4uLi9iaW5kaW5n cy91c2IvdHlwZWItY29ubi1ncGlvLnR4dCAgICAgICAgICB8IDQ5ICsrKysrKysrKysrKysrKysr KysKIDEgZmlsZSBjaGFuZ2VkLCA0OSBpbnNlcnRpb25zKCspCiBjcmVhdGUgbW9kZSAxMDA2NDQg RG9jdW1lbnRhdGlvbi9kZXZpY2V0cmVlL2JpbmRpbmdzL3VzYi90eXBlYi1jb25uLWdwaW8udHh0 CgpkaWZmIC0tZ2l0IGEvRG9jdW1lbnRhdGlvbi9kZXZpY2V0cmVlL2JpbmRpbmdzL3VzYi90eXBl Yi1jb25uLWdwaW8udHh0IGIvRG9jdW1lbnRhdGlvbi9kZXZpY2V0cmVlL2JpbmRpbmdzL3VzYi90 eXBlYi1jb25uLWdwaW8udHh0Cm5ldyBmaWxlIG1vZGUgMTAwNjQ0CmluZGV4IDAwMDAwMDAwMDAw MC4uZDJlMWM0ZTAxYjZkCi0tLSAvZGV2L251bGwKKysrIGIvRG9jdW1lbnRhdGlvbi9kZXZpY2V0 cmVlL2JpbmRpbmdzL3VzYi90eXBlYi1jb25uLWdwaW8udHh0CkBAIC0wLDAgKzEsNDkgQEAKK1VT QiBUeXBlLUIgR1BJTyBDb25uZWN0b3IKKworVGhpcyBpcyBhIHZpcnR1YWwgZGV2aWNlIHVzZWQg dG8gc3dpdGNoIGR1YWwgcm9sZSBtb2RlIGZyb20gdGhlIFVTQiBJRCBwaW4KK2Nvbm5lY3RlZCB0 byBhbiBpbnB1dCBHUElPIHBpbi4KKworUmVxdWlyZWQgcHJvcGVydGllczoKKy0gY29tcGF0aWJs ZSA6IFNob3VsZCBiZSAibGludXgsdHlwZWItY29ubi1ncGlvIgorCitTdWItbm9kZXM6CistIGNv bm5lY3RvciA6IHNob3VsZCBiZSBwcmVzZW50LgorCS0gY29tcGF0aWJsZSA6IHNob3VsZCBiZSAi dXNiLWItY29ubmVjdG9yIi4KKwktIGlkLWdwaW9zLCB2YnVzLWdwaW9zIDogZWl0aGVyIG9uZSBv ZiB0aGVtIG11c3QgYmUgcHJlc2VudCwKKwkJYW5kIGJvdGggY2FuIGJlIHByZXNlbnQgYXMgd2Vs bC4KKwktIHZidXMtc3VwcGx5IDogY2FuIGJlIHByZXNlbnQgaWYgbmVlZGVkIHdoZW4gc3VwcG9y dHMgZHVhbCByb2xlIG1vZGUuCisJc2VlIGNvbm5lY3Rvci91c2ItY29ubmVjdG9yLnR4dAorCist IHBvcnQgOiBzaG91bGQgYmUgcHJlc2VudC4KKwlzZWUgZ3JhcGgudHh0CisKK0V4YW1wbGU6CisK K3Jzd19pZGRpZzogcm9sZV9zd19pZGRpZyB7CisJY29tcGF0aWJsZSA9ICJsaW51eCx0eXBlYi1j b25uLWdwaW8iOworCXN0YXR1cyA9ICJva2F5IjsKKworCWNvbm5lY3RvciB7CisJCWNvbXBhdGli bGUgPSAidXNiLWItY29ubmVjdG9yIjsKKwkJbGFiZWwgPSAibWljcm8tVVNCIjsKKwkJdHlwZSA9 ICJtaWNybyI7CisJCWlkLWdwaW9zID0gPCZwaW8gMTIgR1BJT19BQ1RJVkVfSElHSD47CisJCXZi dXMtc3VwcGx5ID0gPCZ1c2JfcDBfdmJ1cz47CisJfTsKKworCXBvcnQgeworCQliY29ubl9lcDog ZW5kcG9pbnRAMCB7CisJCQlyZW1vdGUtZW5kcG9pbnQgPSA8JnVzYl9yb2xlX3N3PjsKKwkJfTsK Kwl9OworfTsKKworJm10dTMgeworCXN0YXR1cyA9ICJva2F5IjsKKworCXBvcnQgeworCQl1c2Jf cm9sZV9zdzogZW5kcG9pbnRAMCB7CisJCQlyZW1vdGUtZW5kcG9pbnQgPSA8JmJjb25uX2VwPjsK KwkJfTsKKwl9OworfTsK From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF1CEC43219 for ; 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Fri, 26 Apr 2019 14:47:35 +0800 From: Chunfeng Yun To: Rob Herring , Greg Kroah-Hartman , Heikki Krogerus CC: Mark Rutland , Chunfeng Yun , Matthias Brugger , Adam Thomson , Li Jun , Badhri Jagan Sridharan , Hans de Goede , Andy Shevchenko , Min Guo , , , , , , Biju Das , Linus Walleij Subject: [PATCH v4 2/6] dt-bindings: usb: add binding for Type-B GPIO connector driver Date: Fri, 26 Apr 2019 14:47:13 +0800 Message-ID: <1556261237-13823-3-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1556261237-13823-1-git-send-email-chunfeng.yun@mediatek.com> References: <1556261237-13823-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-MTK: N Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Message-ID: <20190426064713.C7zI49leyNex2pD2TSyLoJIQxMPgajvXnsGrDaMNSIY@z> It's used to support dual role switch via GPIO when use Type-B receptacle, typically the USB ID pin is connected to an input GPIO pin Signed-off-by: Chunfeng Yun --- v4 no changes v3 changes: 1. treat type-B connector as a virtual device, but not child device of USB controller's v2 changes: 1. new patch to make binding clear suggested by Hans --- .../bindings/usb/typeb-conn-gpio.txt | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/typeb-conn-gpio.txt diff --git a/Documentation/devicetree/bindings/usb/typeb-conn-gpio.txt b/Documentation/devicetree/bindings/usb/typeb-conn-gpio.txt new file mode 100644 index 000000000000..d2e1c4e01b6d --- /dev/null +++ b/Documentation/devicetree/bindings/usb/typeb-conn-gpio.txt @@ -0,0 +1,49 @@ +USB Type-B GPIO Connector + +This is a virtual device used to switch dual role mode from the USB ID pin +connected to an input GPIO pin. + +Required properties: +- compatible : Should be "linux,typeb-conn-gpio" + +Sub-nodes: +- connector : should be present. + - compatible : should be "usb-b-connector". + - id-gpios, vbus-gpios : either one of them must be present, + and both can be present as well. + - vbus-supply : can be present if needed when supports dual role mode. + see connector/usb-connector.txt + +- port : should be present. + see graph.txt + +Example: + +rsw_iddig: role_sw_iddig { + compatible = "linux,typeb-conn-gpio"; + status = "okay"; + + connector { + compatible = "usb-b-connector"; + label = "micro-USB"; + type = "micro"; + id-gpios = <&pio 12 GPIO_ACTIVE_HIGH>; + vbus-supply = <&usb_p0_vbus>; + }; + + port { + bconn_ep: endpoint@0 { + remote-endpoint = <&usb_role_sw>; + }; + }; +}; + +&mtu3 { + status = "okay"; + + port { + usb_role_sw: endpoint@0 { + remote-endpoint = <&bconn_ep>; + }; + }; +}; -- 2.21.0