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=-0.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 28D8EC433E0 for ; Thu, 21 Jan 2021 13:40:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DBF4A23A1D for ; Thu, 21 Jan 2021 13:39:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729582AbhAUNi6 (ORCPT ); Thu, 21 Jan 2021 08:38:58 -0500 Received: from mout.gmx.net ([212.227.15.15]:49081 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732462AbhAUNgZ (ORCPT ); Thu, 21 Jan 2021 08:36:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1611236066; bh=m1h6cl2uU7OzzlGvliTsG7x9mZ16AXj8EUYGlKHi8i0=; h=X-UI-Sender-Class:Subject:From:In-Reply-To:Date:Cc:References:To; b=fh/T5V0VhMXsErlNpk0VR6LoXvLRU72OshCEB95Ntn5Y3lx/qa1ixauTMbHzK/UVW K+qxBZhvSDjpP1T2M2ZQnr7tHRRNbebd2bamLK7PP6SRUUaiIkBDWsj/HXCWHEY7ug 5+vGOWYG6Z6p0o7gbLgzJ/k9sfNKFqTwzOzfNTr0= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [10.42.0.78] ([83.204.192.78]) by mail.gmx.net (mrgmx005 [212.227.17.184]) with ESMTPSA (Nemesis) id 1M9Wys-1l86Q22R76-005aAI; Thu, 21 Jan 2021 14:34:26 +0100 Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.60.0.2.5\)) Subject: Re: [RFC PATCH 7/7] irqchip/apple-aic: add SMP support to the Apple AIC driver. From: Mohamed Mediouni In-Reply-To: <71e94b48857cbdd21c5d6bdadf148621@kernel.org> Date: Thu, 21 Jan 2021 14:34:24 +0100 Cc: Arnd Bergmann , Linux ARM , Mark Rutland , Catalin Marinas , Hector Martin , linux-kernel@vger.kernel.org, Will Deacon , Stan Skowronek Content-Transfer-Encoding: quoted-printable Message-Id: <2861E21B-32B9-479E-A5F6-528D021183E6@caramail.com> References: <20210120132717.395873-1-mohamed.mediouni@caramail.com> <20210120132717.395873-8-mohamed.mediouni@caramail.com> <71e94b48857cbdd21c5d6bdadf148621@kernel.org> To: Marc Zyngier X-Mailer: Apple Mail (2.3654.60.0.2.5) X-Provags-ID: V03:K1:glCtxedkl3ixCobh4vvhsEf/Kv5eEfQhHAOFGoOtog+GxG0rUMB Przav8dUY2dRpwfzwo1wTFmUo3hTMHfqqdbsU11K8LF61BJt3e1Osft4OmZBpko3mYOV3Rw t1O2wJHYrQ47kMFG3rhQPTbrFmZ07CR2aSYWDtVFLX5SgDYboaN9yqiDO7IMLXjW+e0lOhv mmW0b3P/lmDrSHY+OkA6w== X-UI-Out-Filterresults: notjunk:1;V03:K0:Wsmoz9YM8mQ=:9rI+dhS4aJEQWCGDjQd2/j ehOFwema9APHdqwVNwlMDwqtyIsWAqnbh9TyKpHu5GlF5L0yOCoUwudrvS3jHjrMNo9j+cuKp X0Al2X5rjeyNR59JPx7I57wMOWB7IjGcWG8nZtBiCd+/cSDnjj9/bs0hA/TSKD4+Go07dqSyx FKzp3L0pwR8zamfMVEGHzS0xZSpMAQfQ4m0tba02ZphMz2rmB5arY4G+CukYh9/2ZzBSNLWAE Rzx9aP3Fyop9/4CgYLGBn31aGHDF4wIc7t7mERB/jGsLbXhhkEFWKnoWPy3g8I+g1xQiB38+/ 0QUU99RiektQu2ZIq/QpZUgBjKsi5VweFSOsbKoZospq6fkHJwkxkyblWYhisBqcWNuoSQjva fiMogrvLkFWOSumdZdATcnYbdkvX8npiSXnrUhbbdCIRgmNA89HDcnAF8zhgVU8RyhvSJp2e5 TtBU4JlS/GF7y63KpDbWXbyN/cUuUC5Lsh+4quDjYX51zZrGVkJTi5GanUXZU9KEjeFo9kc/n n8Pow2BqgbtjxwdQMaBtd439gU7A4T/snq0czzZcIRflMi9QS+kJrZjQIAw79Q1DLBlr7Adw6 PRRUD4QZyg52P3fjHFpJ3Zr1oQbU5zZUWQA/6LXZioOtaFLqDzrCq+svri0XfNyOtJR57OYcV BXeCZ8yOqoMFg6DHnr3zDo6c7bCgn0hJoOR+BU/XdkHKGDMlxAKoufg+LAVQuRLp0MDA6U8DR frysKX9M9CPpWM7brA4zgSKjEbNQg/orGpBhO7J8BS3qDVQLEl4U/f8o+CAZBGarr1tuNlJSy NnjfcgzeJAtk/q2SNbcc/4b6bswC3JL8sKNPwCAVVeNj4Atu8pzOb2AvdbafNn+vBwm409Uot 2/mLeaGlCO1uWeK+QABOLrVcvrK3HLk7mFLJ0f9FA= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On 21 Jan 2021, at 14:22, Marc Zyngier wrote: >=20 > On 2021-01-21 12:50, Mohamed Mediouni wrote: >>> On 21 Jan 2021, at 13:44, Arnd Bergmann wrote: >>> On Wed, Jan 20, 2021 at 2:27 PM Mohamed Mediouni >=20 > [...] >=20 >>>> + aic.fast_ipi =3D of_property_read_bool(node, "fast-ipi"); >>> Where is this property documented, and what decides which one to = use? >> It=E2=80=99s getting documented in the next patch set. >> This property is there to enable support for older iPhone processors >> later on, some of which do not have fast IPI support. >> On Apple M1, fast-ipi is always on. >=20 > Then please focus on a single implementation. Additional features can > always be merged later once something is up and running. >=20 > Also, there sysregs can be detected by matching the MIDR, so I don't > think we need a DT property for that. >=20 > Thanks, >=20 Because UART access adapters for the new M1 Macs aren=E2=80=99t = plentiful at all, I actually use this for development, with iPhones which have=20 much more easy to buy Lightning-to-UART adapters. (That=E2=80=99s why the old implementation is there too) Might be worth splitting the new one to a new commit though... Thank you, > M. > --=20 > Jazz is not dead. It just smells funny... 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From: Mohamed Mediouni In-Reply-To: <71e94b48857cbdd21c5d6bdadf148621@kernel.org> Date: Thu, 21 Jan 2021 14:34:24 +0100 Message-Id: <2861E21B-32B9-479E-A5F6-528D021183E6@caramail.com> References: <20210120132717.395873-1-mohamed.mediouni@caramail.com> <20210120132717.395873-8-mohamed.mediouni@caramail.com> <71e94b48857cbdd21c5d6bdadf148621@kernel.org> To: Marc Zyngier X-Mailer: Apple Mail (2.3654.60.0.2.5) X-Provags-ID: V03:K1:glCtxedkl3ixCobh4vvhsEf/Kv5eEfQhHAOFGoOtog+GxG0rUMB Przav8dUY2dRpwfzwo1wTFmUo3hTMHfqqdbsU11K8LF61BJt3e1Osft4OmZBpko3mYOV3Rw t1O2wJHYrQ47kMFG3rhQPTbrFmZ07CR2aSYWDtVFLX5SgDYboaN9yqiDO7IMLXjW+e0lOhv mmW0b3P/lmDrSHY+OkA6w== X-UI-Out-Filterresults: notjunk:1;V03:K0:Wsmoz9YM8mQ=:9rI+dhS4aJEQWCGDjQd2/j ehOFwema9APHdqwVNwlMDwqtyIsWAqnbh9TyKpHu5GlF5L0yOCoUwudrvS3jHjrMNo9j+cuKp X0Al2X5rjeyNR59JPx7I57wMOWB7IjGcWG8nZtBiCd+/cSDnjj9/bs0hA/TSKD4+Go07dqSyx FKzp3L0pwR8zamfMVEGHzS0xZSpMAQfQ4m0tba02ZphMz2rmB5arY4G+CukYh9/2ZzBSNLWAE Rzx9aP3Fyop9/4CgYLGBn31aGHDF4wIc7t7mERB/jGsLbXhhkEFWKnoWPy3g8I+g1xQiB38+/ 0QUU99RiektQu2ZIq/QpZUgBjKsi5VweFSOsbKoZospq6fkHJwkxkyblWYhisBqcWNuoSQjva fiMogrvLkFWOSumdZdATcnYbdkvX8npiSXnrUhbbdCIRgmNA89HDcnAF8zhgVU8RyhvSJp2e5 TtBU4JlS/GF7y63KpDbWXbyN/cUuUC5Lsh+4quDjYX51zZrGVkJTi5GanUXZU9KEjeFo9kc/n n8Pow2BqgbtjxwdQMaBtd439gU7A4T/snq0czzZcIRflMi9QS+kJrZjQIAw79Q1DLBlr7Adw6 PRRUD4QZyg52P3fjHFpJ3Zr1oQbU5zZUWQA/6LXZioOtaFLqDzrCq+svri0XfNyOtJR57OYcV BXeCZ8yOqoMFg6DHnr3zDo6c7bCgn0hJoOR+BU/XdkHKGDMlxAKoufg+LAVQuRLp0MDA6U8DR frysKX9M9CPpWM7brA4zgSKjEbNQg/orGpBhO7J8BS3qDVQLEl4U/f8o+CAZBGarr1tuNlJSy NnjfcgzeJAtk/q2SNbcc/4b6bswC3JL8sKNPwCAVVeNj4Atu8pzOb2AvdbafNn+vBwm409Uot 2/mLeaGlCO1uWeK+QABOLrVcvrK3HLk7mFLJ0f9FA= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210121_083448_705790_BCBCE0F4 X-CRM114-Status: GOOD ( 15.83 ) 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 , Arnd Bergmann , Catalin Marinas , Hector Martin , linux-kernel@vger.kernel.org, Will Deacon , Linux ARM , Stan Skowronek Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Cgo+IE9uIDIxIEphbiAyMDIxLCBhdCAxNDoyMiwgTWFyYyBaeW5naWVyIDxtYXpAa2VybmVsLm9y Zz4gd3JvdGU6Cj4gCj4gT24gMjAyMS0wMS0yMSAxMjo1MCwgTW9oYW1lZCBNZWRpb3VuaSB3cm90 ZToKPj4+IE9uIDIxIEphbiAyMDIxLCBhdCAxMzo0NCwgQXJuZCBCZXJnbWFubiA8YXJuZEBrZXJu ZWwub3JnPiB3cm90ZToKPj4+IE9uIFdlZCwgSmFuIDIwLCAyMDIxIGF0IDI6MjcgUE0gTW9oYW1l ZCBNZWRpb3VuaQo+IAo+IFsuLi5dCj4gCj4+Pj4gKyAgICAgICBhaWMuZmFzdF9pcGkgPSBvZl9w cm9wZXJ0eV9yZWFkX2Jvb2wobm9kZSwgImZhc3QtaXBpIik7Cj4+PiBXaGVyZSBpcyB0aGlzIHBy b3BlcnR5IGRvY3VtZW50ZWQsIGFuZCB3aGF0IGRlY2lkZXMgd2hpY2ggb25lIHRvIHVzZT8KPj4g SXTigJlzIGdldHRpbmcgZG9jdW1lbnRlZCBpbiB0aGUgbmV4dCBwYXRjaCBzZXQuCj4+IFRoaXMg cHJvcGVydHkgaXMgdGhlcmUgdG8gZW5hYmxlIHN1cHBvcnQgZm9yIG9sZGVyIGlQaG9uZSBwcm9j ZXNzb3JzCj4+IGxhdGVyIG9uLCBzb21lIG9mIHdoaWNoIGRvIG5vdCBoYXZlIGZhc3QgSVBJIHN1 cHBvcnQuCj4+IE9uIEFwcGxlIE0xLCBmYXN0LWlwaSBpcyBhbHdheXMgb24uCj4gCj4gVGhlbiBw bGVhc2UgZm9jdXMgb24gYSBzaW5nbGUgaW1wbGVtZW50YXRpb24uIEFkZGl0aW9uYWwgZmVhdHVy ZXMgY2FuCj4gYWx3YXlzIGJlIG1lcmdlZCBsYXRlciBvbmNlIHNvbWV0aGluZyBpcyB1cCBhbmQg cnVubmluZy4KPiAKPiBBbHNvLCB0aGVyZSBzeXNyZWdzIGNhbiBiZSBkZXRlY3RlZCBieSBtYXRj aGluZyB0aGUgTUlEUiwgc28gSSBkb24ndAo+IHRoaW5rIHdlIG5lZWQgYSBEVCBwcm9wZXJ0eSBm b3IgdGhhdC4KPiAKPiBUaGFua3MsCj4gCkJlY2F1c2UgVUFSVCBhY2Nlc3MgYWRhcHRlcnMgZm9y IHRoZSBuZXcgTTEgTWFjcyBhcmVu4oCZdCBwbGVudGlmdWwKYXQgYWxsLCBJIGFjdHVhbGx5IHVz ZSB0aGlzIGZvciBkZXZlbG9wbWVudCwgd2l0aCBpUGhvbmVzIHdoaWNoIGhhdmUgCm11Y2ggbW9y ZSBlYXN5IHRvIGJ1eSBMaWdodG5pbmctdG8tVUFSVCBhZGFwdGVycy4KCihUaGF04oCZcyB3aHkg dGhlIG9sZCBpbXBsZW1lbnRhdGlvbiBpcyB0aGVyZSB0b28pCgpNaWdodCBiZSB3b3J0aCBzcGxp dHRpbmcgdGhlIG5ldyBvbmUgdG8gYSBuZXcgY29tbWl0IHRob3VnaC4uLgoKVGhhbmsgeW91LAo+ ICAgICAgICBNLgo+IC0tIAo+IEphenogaXMgbm90IGRlYWQuIEl0IGp1c3Qgc21lbGxzIGZ1bm55 Li4uCgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGlu dXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRl YWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgt YXJtLWtlcm5lbAo=