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: <1556416257.10179.210.camel@mhfsdcap03> Date: Sun, 28 Apr 2019 09:50:57 +0800 To: Rob Herring 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: T24gRnJpLCAyMDE5LTA0LTI2IGF0IDE1OjQ1IC0wNTAwLCBSb2IgSGVycmluZyB3cm90ZToKPiBP biBGcmksIEFwciAyNiwgMjAxOSBhdCAwMjo0NzoxM1BNICswODAwLCBDaHVuZmVuZyBZdW4gd3Jv dGU6Cj4gPiBJdCdzIHVzZWQgdG8gc3VwcG9ydCBkdWFsIHJvbGUgc3dpdGNoIHZpYSBHUElPIHdo ZW4gdXNlIFR5cGUtQgo+ID4gcmVjZXB0YWNsZSwgdHlwaWNhbGx5IHRoZSBVU0IgSUQgcGluIGlz IGNvbm5lY3RlZCB0byBhbiBpbnB1dAo+ID4gR1BJTyBwaW4KPiA+IAo+ID4gU2lnbmVkLW9mZi1i eTogQ2h1bmZlbmcgWXVuIDxjaHVuZmVuZy55dW5AbWVkaWF0ZWsuY29tPgo+ID4gLS0tCj4gPiB2 NCBubyBjaGFuZ2VzCj4gPiAKPiA+IHYzIGNoYW5nZXM6Cj4gPiAgMS4gdHJlYXQgdHlwZS1CIGNv bm5lY3RvciBhcyBhIHZpcnR1YWwgZGV2aWNlLCBidXQgbm90IGNoaWxkIGRldmljZSBvZgo+ID4g ICAgIFVTQiBjb250cm9sbGVyJ3MKPiA+IAo+ID4gdjIgY2hhbmdlczoKPiA+ICAgMS4gbmV3IHBh dGNoIHRvIG1ha2UgYmluZGluZyBjbGVhciBzdWdnZXN0ZWQgYnkgSGFucwo+ID4gLS0tCj4gPiAg Li4uL2JpbmRpbmdzL3VzYi90eXBlYi1jb25uLWdwaW8udHh0ICAgICAgICAgIHwgNDkgKysrKysr KysrKysrKysrKysrKwo+ID4gIDEgZmlsZSBjaGFuZ2VkLCA0OSBpbnNlcnRpb25zKCspCj4gPiAg Y3JlYXRlIG1vZGUgMTAwNjQ0IERvY3VtZW50YXRpb24vZGV2aWNldHJlZS9iaW5kaW5ncy91c2Iv dHlwZWItY29ubi1ncGlvLnR4dAo+ID4gCj4gPiBkaWZmIC0tZ2l0IGEvRG9jdW1lbnRhdGlvbi9k ZXZpY2V0cmVlL2JpbmRpbmdzL3VzYi90eXBlYi1jb25uLWdwaW8udHh0IGIvRG9jdW1lbnRhdGlv bi9kZXZpY2V0cmVlL2JpbmRpbmdzL3VzYi90eXBlYi1jb25uLWdwaW8udHh0Cj4gPiBuZXcgZmls ZSBtb2RlIDEwMDY0NAo+ID4gaW5kZXggMDAwMDAwMDAwMDAwLi5kMmUxYzRlMDFiNmQKPiA+IC0t LSAvZGV2L251bGwKPiA+ICsrKyBiL0RvY3VtZW50YXRpb24vZGV2aWNldHJlZS9iaW5kaW5ncy91 c2IvdHlwZWItY29ubi1ncGlvLnR4dAo+ID4gQEAgLTAsMCArMSw0OSBAQAo+ID4gK1VTQiBUeXBl LUIgR1BJTyBDb25uZWN0b3IKPiA+ICsKPiA+ICtUaGlzIGlzIGEgdmlydHVhbCBkZXZpY2UgdXNl ZCB0byBzd2l0Y2ggZHVhbCByb2xlIG1vZGUgZnJvbSB0aGUgVVNCIElEIHBpbgo+ID4gK2Nvbm5l Y3RlZCB0byBhbiBpbnB1dCBHUElPIHBpbi4KPiA+ICsKPiA+ICtSZXF1aXJlZCBwcm9wZXJ0aWVz Ogo+ID4gKy0gY29tcGF0aWJsZSA6IFNob3VsZCBiZSAibGludXgsdHlwZWItY29ubi1ncGlvIgo+ IAo+IFRoZXJlJ3Mgbm8gbmVlZCBmb3IgdGhpcyB2aXJ0dWFsIG5vZGUuIFRoZSBVU0IgaG9zdCBv ciBkZXZpY2UgZHJpdmVyIGNhbiAKPiBpbnN0YW50aWF0ZSBhIGNvbm5lY3RvciBkcml2ZXIgYnkg d2Fsa2luZyB0aGUgT0YgZ3JhcGggdG8gdGhlIGNvbm5lY3RvciAKPiBhbmQgY3JlYXRpbmcgYSBk ZXZpY2UuCkdvdCBpdC4KPiAKPiA+ICsKPiA+ICtTdWItbm9kZXM6Cj4gPiArLSBjb25uZWN0b3Ig OiBzaG91bGQgYmUgcHJlc2VudC4KPiA+ICsJLSBjb21wYXRpYmxlIDogc2hvdWxkIGJlICJ1c2It Yi1jb25uZWN0b3IiLgo+ID4gKwktIGlkLWdwaW9zLCB2YnVzLWdwaW9zIDogZWl0aGVyIG9uZSBv ZiB0aGVtIG11c3QgYmUgcHJlc2VudCwKPiA+ICsJCWFuZCBib3RoIGNhbiBiZSBwcmVzZW50IGFz IHdlbGwuCj4gPiArCS0gdmJ1cy1zdXBwbHkgOiBjYW4gYmUgcHJlc2VudCBpZiBuZWVkZWQgd2hl biBzdXBwb3J0cyBkdWFsIHJvbGUgbW9kZS4KPiA+ICsJc2VlIGNvbm5lY3Rvci91c2ItY29ubmVj dG9yLnR4dAo+ID4gKwo+ID4gKy0gcG9ydCA6IHNob3VsZCBiZSBwcmVzZW50Lgo+ID4gKwlzZWUg Z3JhcGgudHh0Cj4gPiArCj4gPiArRXhhbXBsZToKPiA+ICsKPiA+ICtyc3dfaWRkaWc6IHJvbGVf c3dfaWRkaWcgewo+ID4gKwljb21wYXRpYmxlID0gImxpbnV4LHR5cGViLWNvbm4tZ3BpbyI7Cj4g PiArCXN0YXR1cyA9ICJva2F5IjsKPiA+ICsKPiA+ICsJY29ubmVjdG9yIHsKPiA+ICsJCWNvbXBh dGlibGUgPSAidXNiLWItY29ubmVjdG9yIjsKPiA+ICsJCWxhYmVsID0gIm1pY3JvLVVTQiI7Cj4g PiArCQl0eXBlID0gIm1pY3JvIjsKPiA+ICsJCWlkLWdwaW9zID0gPCZwaW8gMTIgR1BJT19BQ1RJ VkVfSElHSD47Cj4gPiArCQl2YnVzLXN1cHBseSA9IDwmdXNiX3AwX3ZidXM+Owo+ID4gKwl9Owo+ ID4gKwo+ID4gKwlwb3J0IHsKPiAKPiBIdW1tLCBzYW1lIG1pc3Rha2UgYXMgSGlrZXkgcGF0Y2hl cy4uLgo+IAo+IFRoaXMgZ29lcyB1bmRlciB0aGUgY29ubmVjdG9yIG5vZGUgYXMgZGVmaW5lZCBp biB0aGUgY29ubmVjdG9yIGJpbmRpbmcuCk9rLCB3aWxsIGZpeCBpdC4KClRoYW5rcyBhIGxvdC4K Cj4gCj4gPiArCQliY29ubl9lcDogZW5kcG9pbnRAMCB7Cj4gPiArCQkJcmVtb3RlLWVuZHBvaW50 ID0gPCZ1c2Jfcm9sZV9zdz47Cj4gPiArCQl9Owo+ID4gKwl9Owo+ID4gK307Cj4gPiArCj4gPiAr Jm10dTMgewo+ID4gKwlzdGF0dXMgPSAib2theSI7Cj4gPiArCj4gPiArCXBvcnQgewo+ID4gKwkJ dXNiX3JvbGVfc3c6IGVuZHBvaW50QDAgewo+ID4gKwkJCXJlbW90ZS1lbmRwb2ludCA9IDwmYmNv bm5fZXA+Owo+ID4gKwkJfTsKPiA+ICsJfTsKPiA+ICt9Owo+ID4gLS0gCj4gPiAyLjIxLjAKPiA+ Cg== 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=-6.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED 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 30473C43218 for ; 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Sun, 28 Apr 2019 09:50:57 +0800 Message-ID: <1556416257.10179.210.camel@mhfsdcap03> Subject: Re: [PATCH v4 2/6] dt-bindings: usb: add binding for Type-B GPIO connector driver From: Chunfeng Yun To: Rob Herring CC: Greg Kroah-Hartman , Heikki Krogerus , Mark Rutland , Matthias Brugger , Adam Thomson , Li Jun , "Badhri Jagan Sridharan" , Hans de Goede , Andy Shevchenko , Min Guo , , , , , , Biju Das , Linus Walleij Date: Sun, 28 Apr 2019 09:50:57 +0800 In-Reply-To: <20190426204537.GA15074@bogus> References: <1556261237-13823-1-git-send-email-chunfeng.yun@mediatek.com> <1556261237-13823-3-git-send-email-chunfeng.yun@mediatek.com> <20190426204537.GA15074@bogus> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-MTK: N Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Message-ID: <20190428015057.KN57ouAejbz1TdGkGv0oAMerdj0xeROE0ZXsxiZge7s@z> On Fri, 2019-04-26 at 15:45 -0500, Rob Herring wrote: > 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. Got it. > > > + > > +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. Ok, will fix it. Thanks a lot. > > > + 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 > >