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Mon, 20 Dec 2021 02:27:31 -0700 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 20 Dec 2021 01:27:29 -0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 20 Dec 2021 17:27:24 +0800 Received: from mhfsdcap04 (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 20 Dec 2021 17:27:23 +0800 Message-ID: <6daef24e540661bbd992b255770d9a6511253fc5.camel@mediatek.com> Subject: Re: [RESEND PATCH v2] PCI: mediatek: Delay 100ms to wait power and clock to become stable From: qizhong.cheng To: Pali =?ISO-8859-1?Q?Roh=E1r?= , Bjorn Helgaas CC: Mark Kettenis , , , , , , , , , , , , , Date: Mon, 20 Dec 2021 17:27:24 +0800 In-Reply-To: <20211209130034.z3d47hc4qzsrc3mt@pali> References: <20211208041228.GA103736@bhelgaas> <20211208101836.pazwdloibn6d7iri@pali> <6e6fd0b50699616e7d943ec1c8bc4e71abd85f6f.camel@mediatek.com> <20211209130034.z3d47hc4qzsrc3mt@pali> X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211220_012736_506115_37DF4AFA X-CRM114-Status: GOOD ( 24.34 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 T24gVGh1LCAyMDIxLTEyLTA5IGF0IDE0OjAwICswMTAwLCBQYWxpIFJvaMOhciB3cm90ZToNCj4g T24gVGh1cnNkYXkgMDkgRGVjZW1iZXIgMjAyMSAxOTo1MTowMyBxaXpob25nLmNoZW5nIHdyb3Rl Og0KPiA+IE9uIFdlZCwgMjAyMS0xMi0wOCBhdCAxMToxOCArMDEwMCwgUGFsaSBSb2jDoXIgd3Jv dGU6DQo+ID4gPiBPbiBXZWRuZXNkYXkgMDggRGVjZW1iZXIgMjAyMSAxNDowNzo1NyBxaXpob25n LmNoZW5nIHdyb3RlOg0KPiA+ID4gPiBPbiBUdWUsIDIwMjEtMTItMDcgYXQgMjI6MTIgLTA2MDAs IEJqb3JuIEhlbGdhYXMgd3JvdGU6DQo+ID4gPiA+ID4gT24gVHVlLCBEZWMgMDcsIDIwMjEgYXQg MTA6MDA6NDNQTSArMDEwMCwgTWFyayBLZXR0ZW5pDQo+ID4gPiA+ID4gDQo+ID4gPiA+ID4gPiA+ IE9uIFR1ZSwgRGVjIDA3LCAyMDIxIGF0IDA0OjQxOjUzUE0gKzA4MDAsIHFpemhvbmcgY2hlbmcN Cj4gPiA+ID4gPiA+ID4gd3JvdGU6DQo+ID4gPiA+ID4gPiA+ID4gRGVzY3JpYmVkIGluIFBDSWUg Q0VNIHNwZWNpZmljYXRpb24gc2VjdGlvbnMgMi4yDQo+ID4gPiA+ID4gPiA+ID4gKFBFUlNUIw0K PiA+ID4gPiA+ID4gPiA+IFNpZ25hbCkgYW5kDQo+ID4gPiA+ID4gPiA+ID4gMi4yLjEgKEluaXRp YWwgUG93ZXItVXAgKEczIHRvIFMwKSkuIFRoZSBkZWFzc2VydGlvbiBvZg0KPiA+ID4gPiA+ID4g PiA+IFBFUlNUIw0KPiA+ID4gPiA+ID4gPiA+IHNob3VsZA0KPiA+ID4gPiA+ID4gPiA+IGJlIGRl bGF5ZWQgMTAwbXMgKFRQVlBFUkwpIGZvciB0aGUgcG93ZXIgYW5kIGNsb2NrIHRvDQo+ID4gPiA+ ID4gPiA+ID4gYmVjb21lDQo+ID4gPiA+ID4gPiA+ID4gc3RhYmxlLg0KPiA+ID4gPiA+ID4gPiA+ IA0KPiA+ID4gPiA+ID4gPiA+IFNpZ25lZC1vZmYtYnk6IHFpemhvbmcgY2hlbmcgPA0KPiA+ID4g PiA+ID4gPiA+IHFpemhvbmcuY2hlbmdAbWVkaWF0ZWsuY29tPg0KPiA+ID4gPiA+ID4gPiA+IEFj a2VkLWJ5OiBQYWxpIFJvaMOhciA8cGFsaUBrZXJuZWwub3JnPg0KPiA+ID4gPiA+ID4gPiANCj4g PiA+ID4gPiA+ID4gLi4uDQo+ID4gPiA+IA0KDQo+ID4gPiBIZWxsbyEgQWJvdXQgbW9udGggYWdv IEkgd2FzIGludmVzdGlnYXRpbmcgY29ycmVjdCBvcmRlciBvZiBzdGVwcw0KPiA+ID4gYW5kDQo+ ID4gPiBJDQo+ID4gPiB3cm90ZSBlbWFpbCBhYm91dCBpdCwgcGxlYXNlIGxvb2sgYXQgaXQ6DQo+ ID4gPiANCj4gPiANCj4gPiANCmh0dHBzOi8vbG9yZS5rZXJuZWwub3JnL2xpbnV4LXBjaS8yMDIx MTAyMjE4MzgwOC5qZGVvN3ZudG5hZ3FrZzdnQHBhbGkvDQo+ID4gDQo+ID4gSGkgUGFsaSwNCj4g PiANCj4gPiBUaGFua3MgZm9yIHlvdXIgaW52ZXN0aWdhdGluZy4NCj4gPiBNb2RpZnkgdGhlIGNv ZGUgdG8gcmVmZXIgdG8geW91ciBzdGVwcyBhcyBmb2xsb3dpbmcocGxlYXNlIGNvcnJlY3QNCj4g PiBtZQ0KPiA+IGlmIEknbSB3cm9uZyk6DQo+ID4gMSkgcGNpZV9hc3NlcnRfcmVzZXQoKTsNCj4g PiAyKSBwY2llX3Bvd2VyX29uKCk7DQo+ID4gMykgcGNpZV9zZXR1cF9yZWZjbGsoKTsNCj4gPiA0 KSBtc2xlZXAoMTAwKTsNCj4gPiA1KSBwY2llX2RlYXNzZXJ0X3Jlc2V0KCk7DQo+ID4gNikgcG9s bGluZ19saW5rX2FjdGl2ZV9iaXQoKTsNCj4gPiA3KSBtc2xlZXAoMTAwKTsNCj4gDQo+IElmIEkg dW5kZXJzdG9vZCBpdCBjb3JyZWN0bHkgdGhlbiBhYm92ZSBzdGVwcyBzaG91bGQgYmUgT0suDQo+ IC4uLg0KDQo+ID4gPiANCj4gPiA+ID4gPiA+ID4gICAtIERvZXMgZWl0aGVyIGFwcGxlIG9yIG1l ZGlhdGVrIHN1cHBvcnQgc3BlZWRzIGdyZWF0ZXINCj4gPiA+ID4gPiA+ID4gdGhhbg0KPiA+ID4g PiA+ID4gPiA1DQo+ID4gPiA+ID4gPiA+IEdUL3MsDQo+ID4gPiA+ID4gPiA+ICAgICBhbmQgaWYg c28sIHNob3VsZG4ndCB3ZSBzdGFydCB0aGUgc2VjIDYuNi4xIDEwMG1zDQo+ID4gPiA+ID4gPiA+ IGRlbGF5DQo+ID4gPiA+ID4gPiA+ICphZnRlcioNCj4gPiA+ID4gPiA+ID4gICAgIExpbmsgdHJh aW5pbmcgY29tcGxldGVzPw0KPiA+ID4gPiA+ID4gDQo+ID4gPiA+ID4gPiBUaGUgQXBwbGUgaGFy ZHdhcmUgYWR2ZXJ0aXNlcyBzdXBwb3J0IGZvciA4IEdUL3MsIGJ1dCBhbGwNCj4gPiA+ID4gPiA+ IHRoZQ0KPiA+ID4gPiA+ID4gZGV2aWNlcw0KPiA+ID4gPiA+ID4gaW50ZWdyYXRlZCBvbiB0aGUg TWFjIG1pbmkgc3VwcG9ydCBvbmx5IDIuNSBHVC9zIG9yIDUgR1Qvcy4NCj4gPiA+ID4gPiANCj4g PiA+ID4gPiANCg0KSGkgQmpvcm4gYW5kIFBhbGksDQoNClRoYW5rcyBmb3IgeW91ciByZXZpZXcu DQoNClRoZSBoYXJkd2FyZSBSQyBkZXZpY2UgY29ycmVzcG9uZGluZyB0byB0aGlzIHZlcnNpb24g b2YgZHJpdmVyIGlzIG9ubHkNCnN1cHBvcnRzIEdlbjEvR2VuMiwgYW5kIHRoZSBzcGVlZCBpcyBu b3QgZ3JlYXRlciB0aGFuIDVHVC9zLiBBZGRpbmcNCiJkZWxheSAxMDBtcyIgYWZ0ZXIgbGluayB0 cmFpbmluZyBpcyByZWR1bmRhbnQgZm9yIHRoZSBlbnRpcmUgYm9vdA0KcHJvY2Vzcy4gU28sIHRo ZSAiZGVsYXkgMTAwbXMiIGFmdGVyIGxpbmsgdHJhaW5pbmcgd2lsbCBub3QgYmUgYWRkZWQuDQoN CkFsc28sIGJhc2VkIG9uIHRoZSBwcmV2aW91cyBzdWdnZXN0aW9uLCBJIHdpbGwgY2hhbmdlIHRo ZSBzdWJqZWN0DQpjb250ZW50Lg0KDQpUaGFua3MNCg0KX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGlu dXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQu b3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=