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: Rob Herring Message-Id: <20190426204537.GA15074@bogus> Date: Fri, 26 Apr 2019 15:45:37 -0500 To: Chunfeng Yun Cc: Greg Kroah-Hartman , Heikki Krogerus , Mark Rutland , 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: T24gRnJpLCBBcHIgMjYsIDIwMTkgYXQgMDI6NDc6MTNQTSArMDgwMCwgQ2h1bmZlbmcgWXVuIHdy b3RlOgo+IEl0J3MgdXNlZCB0byBzdXBwb3J0IGR1YWwgcm9sZSBzd2l0Y2ggdmlhIEdQSU8gd2hl biB1c2UgVHlwZS1CCj4gcmVjZXB0YWNsZSwgdHlwaWNhbGx5IHRoZSBVU0IgSUQgcGluIGlzIGNv bm5lY3RlZCB0byBhbiBpbnB1dAo+IEdQSU8gcGluCj4gCj4gU2lnbmVkLW9mZi1ieTogQ2h1bmZl bmcgWXVuIDxjaHVuZmVuZy55dW5AbWVkaWF0ZWsuY29tPgo+IC0tLQo+IHY0IG5vIGNoYW5nZXMK PiAKPiB2MyBjaGFuZ2VzOgo+ICAxLiB0cmVhdCB0eXBlLUIgY29ubmVjdG9yIGFzIGEgdmlydHVh bCBkZXZpY2UsIGJ1dCBub3QgY2hpbGQgZGV2aWNlIG9mCj4gICAgIFVTQiBjb250cm9sbGVyJ3MK PiAKPiB2MiBjaGFuZ2VzOgo+ICAgMS4gbmV3IHBhdGNoIHRvIG1ha2UgYmluZGluZyBjbGVhciBz dWdnZXN0ZWQgYnkgSGFucwo+IC0tLQo+ICAuLi4vYmluZGluZ3MvdXNiL3R5cGViLWNvbm4tZ3Bp by50eHQgICAgICAgICAgfCA0OSArKysrKysrKysrKysrKysrKysrCj4gIDEgZmlsZSBjaGFuZ2Vk LCA0OSBpbnNlcnRpb25zKCspCj4gIGNyZWF0ZSBtb2RlIDEwMDY0NCBEb2N1bWVudGF0aW9uL2Rl dmljZXRyZWUvYmluZGluZ3MvdXNiL3R5cGViLWNvbm4tZ3Bpby50eHQKPiAKPiBkaWZmIC0tZ2l0 IGEvRG9jdW1lbnRhdGlvbi9kZXZpY2V0cmVlL2JpbmRpbmdzL3VzYi90eXBlYi1jb25uLWdwaW8u dHh0IGIvRG9jdW1lbnRhdGlvbi9kZXZpY2V0cmVlL2JpbmRpbmdzL3VzYi90eXBlYi1jb25uLWdw aW8udHh0Cj4gbmV3IGZpbGUgbW9kZSAxMDA2NDQKPiBpbmRleCAwMDAwMDAwMDAwMDAuLmQyZTFj NGUwMWI2ZAo+IC0tLSAvZGV2L251bGwKPiArKysgYi9Eb2N1bWVudGF0aW9uL2RldmljZXRyZWUv YmluZGluZ3MvdXNiL3R5cGViLWNvbm4tZ3Bpby50eHQKPiBAQCAtMCwwICsxLDQ5IEBACj4gK1VT QiBUeXBlLUIgR1BJTyBDb25uZWN0b3IKPiArCj4gK1RoaXMgaXMgYSB2aXJ0dWFsIGRldmljZSB1 c2VkIHRvIHN3aXRjaCBkdWFsIHJvbGUgbW9kZSBmcm9tIHRoZSBVU0IgSUQgcGluCj4gK2Nvbm5l Y3RlZCB0byBhbiBpbnB1dCBHUElPIHBpbi4KPiArCj4gK1JlcXVpcmVkIHByb3BlcnRpZXM6Cj4g Ky0gY29tcGF0aWJsZSA6IFNob3VsZCBiZSAibGludXgsdHlwZWItY29ubi1ncGlvIgoKVGhlcmUn cyBubyBuZWVkIGZvciB0aGlzIHZpcnR1YWwgbm9kZS4gVGhlIFVTQiBob3N0IG9yIGRldmljZSBk cml2ZXIgY2FuIAppbnN0YW50aWF0ZSBhIGNvbm5lY3RvciBkcml2ZXIgYnkgd2Fsa2luZyB0aGUg T0YgZ3JhcGggdG8gdGhlIGNvbm5lY3RvciAKYW5kIGNyZWF0aW5nIGEgZGV2aWNlLgoKPiArCj4g K1N1Yi1ub2RlczoKPiArLSBjb25uZWN0b3IgOiBzaG91bGQgYmUgcHJlc2VudC4KPiArCS0gY29t cGF0aWJsZSA6IHNob3VsZCBiZSAidXNiLWItY29ubmVjdG9yIi4KPiArCS0gaWQtZ3Bpb3MsIHZi dXMtZ3Bpb3MgOiBlaXRoZXIgb25lIG9mIHRoZW0gbXVzdCBiZSBwcmVzZW50LAo+ICsJCWFuZCBi b3RoIGNhbiBiZSBwcmVzZW50IGFzIHdlbGwuCj4gKwktIHZidXMtc3VwcGx5IDogY2FuIGJlIHBy ZXNlbnQgaWYgbmVlZGVkIHdoZW4gc3VwcG9ydHMgZHVhbCByb2xlIG1vZGUuCj4gKwlzZWUgY29u bmVjdG9yL3VzYi1jb25uZWN0b3IudHh0Cj4gKwo+ICstIHBvcnQgOiBzaG91bGQgYmUgcHJlc2Vu dC4KPiArCXNlZSBncmFwaC50eHQKPiArCj4gK0V4YW1wbGU6Cj4gKwo+ICtyc3dfaWRkaWc6IHJv bGVfc3dfaWRkaWcgewo+ICsJY29tcGF0aWJsZSA9ICJsaW51eCx0eXBlYi1jb25uLWdwaW8iOwo+ ICsJc3RhdHVzID0gIm9rYXkiOwo+ICsKPiArCWNvbm5lY3RvciB7Cj4gKwkJY29tcGF0aWJsZSA9 ICJ1c2ItYi1jb25uZWN0b3IiOwo+ICsJCWxhYmVsID0gIm1pY3JvLVVTQiI7Cj4gKwkJdHlwZSA9 ICJtaWNybyI7Cj4gKwkJaWQtZ3Bpb3MgPSA8JnBpbyAxMiBHUElPX0FDVElWRV9ISUdIPjsKPiAr CQl2YnVzLXN1cHBseSA9IDwmdXNiX3AwX3ZidXM+Owo+ICsJfTsKPiArCj4gKwlwb3J0IHsKCkh1 bW0sIHNhbWUgbWlzdGFrZSBhcyBIaWtleSBwYXRjaGVzLi4uCgpUaGlzIGdvZXMgdW5kZXIgdGhl IGNvbm5lY3RvciBub2RlIGFzIGRlZmluZWQgaW4gdGhlIGNvbm5lY3RvciBiaW5kaW5nLgoKPiAr CQliY29ubl9lcDogZW5kcG9pbnRAMCB7Cj4gKwkJCXJlbW90ZS1lbmRwb2ludCA9IDwmdXNiX3Jv bGVfc3c+Owo+ICsJCX07Cj4gKwl9Owo+ICt9Owo+ICsKPiArJm10dTMgewo+ICsJc3RhdHVzID0g Im9rYXkiOwo+ICsKPiArCXBvcnQgewo+ICsJCXVzYl9yb2xlX3N3OiBlbmRwb2ludEAwIHsKPiAr CQkJcmVtb3RlLWVuZHBvaW50ID0gPCZiY29ubl9lcD47Cj4gKwkJfTsKPiArCX07Cj4gK307Cj4g LS0gCj4gMi4yMS4wCj4K 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=-8.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, T_DKIMWL_WL_HIGH,USER_AGENT_MUTT 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 EB5BFC43219 for ; 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[24.155.109.49]) by smtp.gmail.com with ESMTPSA id f5sm1249855otp.16.2019.04.26.13.45.38 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 26 Apr 2019 13:45:38 -0700 (PDT) Date: Fri, 26 Apr 2019 15:45:37 -0500 From: Rob Herring To: Chunfeng Yun Cc: Greg Kroah-Hartman , Heikki Krogerus , Mark Rutland , 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 Subject: Re: [PATCH v4 2/6] dt-bindings: usb: add binding for Type-B GPIO connector driver Message-ID: <20190426204537.GA15074@bogus> References: <1556261237-13823-1-git-send-email-chunfeng.yun@mediatek.com> <1556261237-13823-3-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline In-Reply-To: <1556261237-13823-3-git-send-email-chunfeng.yun@mediatek.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Message-ID: <20190426204537.b_Jpk5jFV5jSCG6q42osazyI8e7sFCcR-Rw0Itj13cU@z> On Fri, Apr 26, 2019 at 02:47:13PM +0800, Chunfeng Yun wrote: > 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" There's no need for this virtual node. The USB host or device driver can instantiate a connector driver by walking the OF graph to the connector and creating a device. > + > +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 { Humm, same mistake as Hikey patches... This goes under the connector node as defined in the connector binding. > + 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 >