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=-5.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 9B608C43331 for ; Fri, 6 Sep 2019 05:26:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 81FE0206BB for ; Fri, 6 Sep 2019 05:26:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="Z+TBVNB0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392349AbfIFF0P (ORCPT ); Fri, 6 Sep 2019 01:26:15 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:38875 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392344AbfIFF0P (ORCPT ); Fri, 6 Sep 2019 01:26:15 -0400 Received: by mail-pf1-f195.google.com with SMTP id h195so3572110pfe.5 for ; Thu, 05 Sep 2019 22:26:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=message-id:mime-version:content-transfer-encoding:in-reply-to :references:to:from:cc:subject:user-agent:date; bh=u7691phoxUxEdEhIJ0JOC7Ng9s9hyHBORKH2Von7rlk=; b=Z+TBVNB0VSXglybGnbmX3Xg7oWyQb0Uh3ZQmxpzhBQJojSoaGcCNhwffxCs/S7qP7Z X6MODDZ+h1RefxIKPN7IeBWDyWbLVcfMP6VSmijghP6yUKXYFwP6+dkTpAYxLGc2HY0f LkN0m2IL7Zss46jGMqiX2iCWNvRVay7S2XySo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:mime-version :content-transfer-encoding:in-reply-to:references:to:from:cc:subject :user-agent:date; bh=u7691phoxUxEdEhIJ0JOC7Ng9s9hyHBORKH2Von7rlk=; b=P3+1clUbMSMqTWwA2QbFIs6IW1Vokv/TWhYl4qvNZkoNvU5/1yNdWJZ4U+gNwLBAv3 rPJh0WO+NdgR8J8A6WYgkFrk/83zSskIJCjIlAWjGX1DE2mA0WVi+qo7bFbOQMndRN9r PFCTEFrN3QRneumUJn4skFTcXWMXMh5tE9Vwm4mhcs4O8UL95gYB5uCPt81wtF9at/w6 jqDTtd7fmP4mnnjqBDUTftXUhwAroTCVDW65ltbWXi1MjWPL8VGJtDw6yl/YsGGOZJr+ xLLZYc85wSAPtYdxxwmddaMiP4kIqO6M8atlPXLvZRtL+o/Ga/lqN5L7eMUCeoUB8py5 b7BQ== X-Gm-Message-State: APjAAAUv80u/AjV7d3XUKWPiOCB4dqgETPFk3moujXvdkypyjM4GrukQ IJnJc4SNb7OfwV0fsoLsbw7TFw== X-Google-Smtp-Source: APXvYqxxS2afeG8bx+7q56JsZOG8CWSYjGmdaA830tTQVpcIVkrfr7pzwoEZ4jywfiS5HQVZln95xw== X-Received: by 2002:a63:590f:: with SMTP id n15mr6506040pgb.190.1567747574583; Thu, 05 Sep 2019 22:26:14 -0700 (PDT) Received: from chromium.org ([2620:15c:202:1:fa53:7765:582b:82b9]) by smtp.gmail.com with ESMTPSA id s186sm5936916pfb.126.2019.09.05.22.26.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Sep 2019 22:26:13 -0700 (PDT) Message-ID: <5d71edf5.1c69fb81.1f307.fdd6@mx.google.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable In-Reply-To: <20190905175802.GA19599@jackp-linux.qualcomm.com> References: <20190223165218.GB572@tuxbook-pro> <5d694878.1c69fb81.5f13b.ec4f@mx.google.com> <20190830164520.GK26807@tuxbook-pro> <5d696ad2.1c69fb81.977ea.39e5@mx.google.com> <20190903173924.GB9754@jackp-linux.qualcomm.com> <5d6edee5.1c69fb81.a3896.1d05@mx.google.com> <20190903233410.GQ26807@tuxbook-pro> <20190905175802.GA19599@jackp-linux.qualcomm.com> To: Jack Pham , Jorge Ramirez From: Stephen Boyd Cc: Bjorn Andersson , robh@kernel.org, andy.gross@linaro.org, shawn.guo@linaro.org, gregkh@linuxfoundation.org, mark.rutland@arm.com, kishon@ti.com, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, khasim.mohammed@linaro.org Subject: Re: [PATCH v4 3/4] dt-bindings: Add Qualcomm USB SuperSpeed PHY bindings User-Agent: alot/0.8.1 Date: Thu, 05 Sep 2019 22:26:12 -0700 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Quoting Jack Pham (2019-09-05 10:58:02) > Hi Jorge, Bjorn, >=20 > On Thu, Sep 05, 2019 at 09:18:57AM +0200, Jorge Ramirez wrote: > > On 9/4/19 01:34, Bjorn Andersson wrote: > > > On Tue 03 Sep 14:45 PDT 2019, Stephen Boyd wrote: > > >> that would need an of_regulator_get() sort of API that can get the > > >> regulator out of there? Or to make the connector into a struct device > > >> that can get the regulator out per some generic connector driver and > > >> then pass it through to the USB controller when it asks for it. Maybe > > >> try to prototype that out? > > >> > > >=20 > > > The examples given in the DT bindings describes the connector as a ch= ild > > > of a PMIC, with of_graph somehow tying it to the various inputs. But = in > > > these examples vbus is handled by implicitly inside the MFD, where > > > extcon is informed about the plug event they toggle vbus as well. > > >=20 > > > In our case we have a extcon-usb-gpio to detect mode, which per Jorge= 's > > > proposal will trickle down to the PHY and become a regulator calls on > > > either some external regulator or more typically one of the chargers = in > > > the system. >=20 > Interesting you mention extcon-usb-gpio. I thought extcon at least from > bindings perspective is pass=C3=83=C2=A9 now. Maybe this is what you need= (just > landed in usb-next): >=20 > usb: common: add USB GPIO based connection detection driver > https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?h= =3Dusb-next&id=3D4602f3bff2669012c1147eecfe74c121765f5c56 >=20 > dt-bindings: usb: add binding for USB GPIO based connection detection dri= ver > https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?h= =3Dusb-next&id=3Df651c73e71f53f65e9846677d79d8e120452b59f >=20 > Fortunately this new driver might check the right boxes for you: > - usb connector binding > - ID detect GPIO > - vbus-supply regulator >=20 > With that, I think you can also keep the connector subnode out of the > SSPHY node well, and similarly get rid of the vbus toggle handling from > the PHY driver. >=20 > The big thing missing now is that this driver replaces extcon > completely, so we'll need handling in dwc3/dwc3-qcom to retrieve the > role switch state to know when host mode is entered. I saw this a while > back but don't think it got picked up: >=20 > https://patchwork.kernel.org/patch/10909981/ >=20 Yes this looks like the approach that should be taken. One question though, is this a micro-b connector or a type-c connector on the board? I thought it was a type-c, so then this USB gpio based connection driver isn't an exact fit? 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Thu, 05 Sep 2019 22:26:13 -0700 (PDT) Message-ID: <5d71edf5.1c69fb81.1f307.fdd6@mx.google.com> MIME-Version: 1.0 In-Reply-To: <20190905175802.GA19599@jackp-linux.qualcomm.com> References: <20190223165218.GB572@tuxbook-pro> <5d694878.1c69fb81.5f13b.ec4f@mx.google.com> <20190830164520.GK26807@tuxbook-pro> <5d696ad2.1c69fb81.977ea.39e5@mx.google.com> <20190903173924.GB9754@jackp-linux.qualcomm.com> <5d6edee5.1c69fb81.a3896.1d05@mx.google.com> <20190903233410.GQ26807@tuxbook-pro> <20190905175802.GA19599@jackp-linux.qualcomm.com> To: Jack Pham , Jorge Ramirez From: Stephen Boyd Subject: Re: [PATCH v4 3/4] dt-bindings: Add Qualcomm USB SuperSpeed PHY bindings User-Agent: alot/0.8.1 Date: Thu, 05 Sep 2019 22:26:12 -0700 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190905_222615_720364_67371B3C X-CRM114-Status: GOOD ( 21.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, robh@kernel.org, kishon@ti.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, khasim.mohammed@linaro.org, linux-kernel@vger.kernel.org, Bjorn Andersson , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, andy.gross@linaro.org, shawn.guo@linaro.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org UXVvdGluZyBKYWNrIFBoYW0gKDIwMTktMDktMDUgMTA6NTg6MDIpCj4gSGkgSm9yZ2UsIEJqb3Ju LAo+IAo+IE9uIFRodSwgU2VwIDA1LCAyMDE5IGF0IDA5OjE4OjU3QU0gKzAyMDAsIEpvcmdlIFJh bWlyZXogd3JvdGU6Cj4gPiBPbiA5LzQvMTkgMDE6MzQsIEJqb3JuIEFuZGVyc3NvbiB3cm90ZToK PiA+ID4gT24gVHVlIDAzIFNlcCAxNDo0NSBQRFQgMjAxOSwgU3RlcGhlbiBCb3lkIHdyb3RlOgo+ ID4gPj4gdGhhdCB3b3VsZCBuZWVkIGFuIG9mX3JlZ3VsYXRvcl9nZXQoKSBzb3J0IG9mIEFQSSB0 aGF0IGNhbiBnZXQgdGhlCj4gPiA+PiByZWd1bGF0b3Igb3V0IG9mIHRoZXJlPyBPciB0byBtYWtl IHRoZSBjb25uZWN0b3IgaW50byBhIHN0cnVjdCBkZXZpY2UKPiA+ID4+IHRoYXQgY2FuIGdldCB0 aGUgcmVndWxhdG9yIG91dCBwZXIgc29tZSBnZW5lcmljIGNvbm5lY3RvciBkcml2ZXIgYW5kCj4g PiA+PiB0aGVuIHBhc3MgaXQgdGhyb3VnaCB0byB0aGUgVVNCIGNvbnRyb2xsZXIgd2hlbiBpdCBh c2tzIGZvciBpdC4gTWF5YmUKPiA+ID4+IHRyeSB0byBwcm90b3R5cGUgdGhhdCBvdXQ/Cj4gPiA+ Pgo+ID4gPiAKPiA+ID4gVGhlIGV4YW1wbGVzIGdpdmVuIGluIHRoZSBEVCBiaW5kaW5ncyBkZXNj cmliZXMgdGhlIGNvbm5lY3RvciBhcyBhIGNoaWxkCj4gPiA+IG9mIGEgUE1JQywgd2l0aCBvZl9n cmFwaCBzb21laG93IHR5aW5nIGl0IHRvIHRoZSB2YXJpb3VzIGlucHV0cy4gQnV0IGluCj4gPiA+ IHRoZXNlIGV4YW1wbGVzIHZidXMgaXMgaGFuZGxlZCBieSBpbXBsaWNpdGx5IGluc2lkZSB0aGUg TUZELCB3aGVyZQo+ID4gPiBleHRjb24gaXMgaW5mb3JtZWQgYWJvdXQgdGhlIHBsdWcgZXZlbnQg dGhleSB0b2dnbGUgdmJ1cyBhcyB3ZWxsLgo+ID4gPiAKPiA+ID4gSW4gb3VyIGNhc2Ugd2UgaGF2 ZSBhIGV4dGNvbi11c2ItZ3BpbyB0byBkZXRlY3QgbW9kZSwgd2hpY2ggcGVyIEpvcmdlJ3MKPiA+ ID4gcHJvcG9zYWwgd2lsbCB0cmlja2xlIGRvd24gdG8gdGhlIFBIWSBhbmQgYmVjb21lIGEgcmVn dWxhdG9yIGNhbGxzIG9uCj4gPiA+IGVpdGhlciBzb21lIGV4dGVybmFsIHJlZ3VsYXRvciBvciBt b3JlIHR5cGljYWxseSBvbmUgb2YgdGhlIGNoYXJnZXJzIGluCj4gPiA+IHRoZSBzeXN0ZW0uCj4g Cj4gSW50ZXJlc3RpbmcgeW91IG1lbnRpb24gZXh0Y29uLXVzYi1ncGlvLiBJIHRob3VnaHQgZXh0 Y29uIGF0IGxlYXN0IGZyb20KPiBiaW5kaW5ncyBwZXJzcGVjdGl2ZSBpcyBwYXNzw4PCqSBub3cu IE1heWJlIHRoaXMgaXMgd2hhdCB5b3UgbmVlZCAoanVzdAo+IGxhbmRlZCBpbiB1c2ItbmV4dCk6 Cj4gCj4gdXNiOiBjb21tb246IGFkZCBVU0IgR1BJTyBiYXNlZCBjb25uZWN0aW9uIGRldGVjdGlv biBkcml2ZXIKPiBodHRwczovL2dpdC5rZXJuZWwub3JnL3B1Yi9zY20vbGludXgva2VybmVsL2dp dC9ncmVna2gvdXNiLmdpdC9jb21taXQvP2g9dXNiLW5leHQmaWQ9NDYwMmYzYmZmMjY2OTAxMmMx MTQ3ZWVjZmU3NGMxMjE3NjVmNWM1Ngo+IAo+IGR0LWJpbmRpbmdzOiB1c2I6IGFkZCBiaW5kaW5n IGZvciBVU0IgR1BJTyBiYXNlZCBjb25uZWN0aW9uIGRldGVjdGlvbiBkcml2ZXIKPiBodHRwczov L2dpdC5rZXJuZWwub3JnL3B1Yi9zY20vbGludXgva2VybmVsL2dpdC9ncmVna2gvdXNiLmdpdC9j b21taXQvP2g9dXNiLW5leHQmaWQ9ZjY1MWM3M2U3MWY1M2Y2NWU5ODQ2Njc3ZDc5ZDhlMTIwNDUy YjU5Zgo+IAo+IEZvcnR1bmF0ZWx5IHRoaXMgbmV3IGRyaXZlciBtaWdodCBjaGVjayB0aGUgcmln aHQgYm94ZXMgZm9yIHlvdToKPiAtIHVzYiBjb25uZWN0b3IgYmluZGluZwo+IC0gSUQgZGV0ZWN0 IEdQSU8KPiAtIHZidXMtc3VwcGx5IHJlZ3VsYXRvcgo+IAo+IFdpdGggdGhhdCwgSSB0aGluayB5 b3UgY2FuIGFsc28ga2VlcCB0aGUgY29ubmVjdG9yIHN1Ym5vZGUgb3V0IG9mIHRoZQo+IFNTUEhZ IG5vZGUgd2VsbCwgYW5kIHNpbWlsYXJseSBnZXQgcmlkIG9mIHRoZSB2YnVzIHRvZ2dsZSBoYW5k bGluZyBmcm9tCj4gdGhlIFBIWSBkcml2ZXIuCj4gCj4gVGhlIGJpZyB0aGluZyBtaXNzaW5nIG5v dyBpcyB0aGF0IHRoaXMgZHJpdmVyIHJlcGxhY2VzIGV4dGNvbgo+IGNvbXBsZXRlbHksIHNvIHdl J2xsIG5lZWQgaGFuZGxpbmcgaW4gZHdjMy9kd2MzLXFjb20gdG8gcmV0cmlldmUgdGhlCj4gcm9s ZSBzd2l0Y2ggc3RhdGUgdG8ga25vdyB3aGVuIGhvc3QgbW9kZSBpcyBlbnRlcmVkLiBJIHNhdyB0 aGlzIGEgd2hpbGUKPiBiYWNrIGJ1dCBkb24ndCB0aGluayBpdCBnb3QgcGlja2VkIHVwOgo+IAo+ IGh0dHBzOi8vcGF0Y2h3b3JrLmtlcm5lbC5vcmcvcGF0Y2gvMTA5MDk5ODEvCj4gCgpZZXMgdGhp cyBsb29rcyBsaWtlIHRoZSBhcHByb2FjaCB0aGF0IHNob3VsZCBiZSB0YWtlbi4gT25lIHF1ZXN0 aW9uCnRob3VnaCwgaXMgdGhpcyBhIG1pY3JvLWIgY29ubmVjdG9yIG9yIGEgdHlwZS1jIGNvbm5l Y3RvciBvbiB0aGUgYm9hcmQ/CkkgdGhvdWdodCBpdCB3YXMgYSB0eXBlLWMsIHNvIHRoZW4gdGhp cyBVU0IgZ3BpbyBiYXNlZCBjb25uZWN0aW9uIGRyaXZlcgppc24ndCBhbiBleGFjdCBmaXQ/CgoK X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJt LWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3Jn Cmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtl cm5lbAo=