From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexey Brodkin Subject: Setting CPU clock frequency on early boot Date: Tue, 5 Sep 2017 15:37:48 +0000 Message-ID: <1504625867.32565.34.camel@synopsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from smtprelay.synopsys.com ([198.182.47.9]:59723 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751382AbdIEPhw (ORCPT ); Tue, 5 Sep 2017 11:37:52 -0400 Content-Language: en-US Content-ID: <502EFEDE5E8D314D9F7452DCDCE7CC7E@internal.synopsys.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: "linux-clk@vger.kernel.org" Cc: "linux-arch@vger.kernel.org" , "mturquette@baylibre.com" , "sboyd@codeaurora.org" , "linux-snps-arc@lists.infradead.org" , "devicetree@vger.kernel.org" SGVsbG8sDQoNCkknZCBsaWtlIHRvIGdldCBzb21lIGZlZWRiYWNrIG9uIG91ciBpZGVhIGFzIHdl bGwgYXMgY2hlY2sNCmlmIHNvbWVib2R5IGZhY2VzIHNpbWlsYXIgc2l0dWF0aW9ucyBhbmQgaWYg c28gd2hhdCB3b3VsZCBiZSB0aGUgYmVzdA0Kd2F5IHRvIGltcGxlbWVudCBzb21lIGdlbmVyaWMg c29sdXRpb24gdGhhdCBzdWl0cyBldmVyeW9uZS4NCg0KU28gdGhhdCdzIG91ciBwcm9ibGVtOg0K MS4gT24gcG93ZXItb24gaGFyZHdhcmUgbWlnaHQgc3RhcnQgY2xvY2tpbmcgQ1BVIHdpdGggZWl0 aGVyDQrCoCDCoHRvbyBoaWdoIGZyZXF1ZW5jeSAoc3VjaCB0aGF0IENQVSBtYXkgZ2V0IHN0dWNr IGF0IHNvbWUgcG9pbnQpDQrCoCDCoG9yIHRvbyBsb3cgZnJlcXVlbmN5Lg0KDQrCoCDCoFRoYXQg YWxsIHNvdW5kcyBzdHVwaWQgYnV0IGxldCBtZSBlbGFib3JhdGUgYSBiaXQgaGVyZS4NCsKgIMKg SSdtIHRhbGtpbmcgYWJvdXQgRlBHQS1iYXNlZCBkZXZib2FyZHMgZmlybXdhcmUgZm9yIHdoaWNo DQrCoCDCoChoZXJlIEkgbWVhbiBqdXN0IGltYWdlIGxvYWRlZCBpbiBGUEdBIHdpdGggQ1BVIGlt cGxlbWVudGF0aW9uDQrCoCDCoGJ1dCBub3Qgc29tZSBzb2Z0d2FyZSB5ZXQpIG1pZ2h0IG5vdCBi ZSBzdGFibGUgb3IgYmUgZXZlbiBleHBlcmltZW50YWwuDQoNCsKgIMKgRm9yIGV4YW1wbGUgd2Ug bWF5IGRlYWwgd2l0aCBkdWFsLWNvcmUgb3IgcXVhZC1jb3JlIGRlc2lnbnMuDQrCoCDCoEZvcm1l ciBtaWdodCBiZSBPSyBydW5uaW5nIEAxMDBNSHogYW5kIGxhdHRlciBpcyBvbmx5IHVzYWJsZQ0K wqAgwqBANzVNSHogYW5kIGxvd2VyLiBUaGUgc2ltcGxlc3Qgc29sdXRpb24gbWlnaHQgYmUgdG8g dXNlIHNvbWUgc2FmZQ0KwqAgwqB2YWx1ZSBiZWZvcmUgc29tZXRoaW5nIGxpa2UgQ1BVZnJlcSBr aWNrcyBpbi4gQnV0IHdlIGRvbid0IHlldCBoYXZlDQrCoCDCoENQVWZyZXEgZm9yIEFSQyAod2Ug ZG8gcGxhbiB0byBnZXQgaXQgd29ya2luZyBzb21ldGltZSBzb29uKSB3aGljaA0KwqAgwqBtZWFu cyBzaW1wbGUgY2hhbmdlIG9mIENQVSBmcmVxdWVuY3kgb25jZSB0aW1lLWtlZXBpbmcgaW5mcmFz dHJ1Y3R1cmUNCsKgIMKgd2FzIGJyb3VnaHQtdXAgaXMgbm90IGFuIG9wdGlvbi4uLiBJLmUuIHdl J2xsIGVuZCB1cCB3aXRoIHRoZSBzeXN0ZW0gcnVubmluZw0KwqAgwqBtdWNoIHNsb3dlciBjb21w YXJlZCB3aGF0IGNvdWxkIGhhdmUgYmVlbiBwb3NzaWJsZS4NCg0KMi4gVXAgdW50aWwgbm93IHdl IHVzZWQgdG8gZG8gZGlydHkgaGFja3MgaW4gZWFybHkgcGxhdGZvcm0gaW5pdCBjb2RlLg0KwqAg wqBOYW1lbHkgKHNlZcKgYXhzMTAzX2Vhcmx5X2luaXQoKSBpbsKgYXJjaC9hcmMvcGxhdC1heHMx MHgvYXhzMTB4LmMpOg0KwqAgwqAgMSkgUmVhZCBDUFUncyAiY2xvY2stZnJlcXVlbmN5IiBmcm9t IC5kdGIgKHJlbWVtYmVyIHdlJ3JlIG9uIHZlcnkgZWFybHkNCsKgIMKgIMKgIMKgYm9vdCBzdGFn ZSBzdGlsbCBzbyBubyBleHBhbmRlZCBEZXZUcmVlIHlldCBleGlzdHMpLg0KwqAgwqAgMikgQ2hl Y2sgaG93IG1hbnkgY29yZXMgd2UgaGF2ZSBhbmQgd2hpY2ggZnJlcSBpcyB1c2FibGUNCsKgIMKg IDMpIFVwZGF0ZSBQTEwgc2V0dGluZ3MgcmlnaHQgaW4gcGxhY2UgaWYgbmV3IGZyZXEgIT0gZXhp c3RpbmcgaW4gUExMLg0KDQrCoCDCoEV2ZW4gdGhvdWdoIGl0IGlzIHByb3ZlbiB0byB3b3JrIGJ1 dCB3aXRoIG1vcmUgcGxhdGZvcm1zIGluIHRoZSBwaXBlbGluZQ0KwqAgwqB3ZSdsbCBuZWVkIHRv IGNvcHktcGFzdGUgcHJldHR5IG11Y2ggdGhlIHNhbWUgc3R1ZmYgYWNyb3NzIGFsbCBhZmZlY3Rl ZA0KwqAgwqBwbGF0cy4gV2hpY2ggaXMgbm90IG5pY2UuDQoNCsKgIMKgTW9yZW92ZXIgYmFjayBp biB0aGUgZGF5IHdlIGRpZG4ndCBoYXZlIGEgcHJvcGVyIGNsayBkcml2ZXIgZm9yIENQVSdzIFBM TC4NCsKgIMKgVGh1cyBhY3Rpbmcgb24gUExMIHJlZ2lzdGVycyByaWdodCBpbiBwbGFjZSB3YXMg dGhlIG9ubHkgdGhpbmcgd2Ugd2VyZSBhYmxlDQrCoCDCoHRvIGRvLiBOb3cgd2l0aCBpbnRyb2R1 Y3Rpb24gb2Ygbm9ybWFsIGNsayBkcml2ZXINCsKgIMKgKHNlZcKgZHJpdmVycy9jbGsvYXhzMTB4 L3BsbF9jbG9jay5jIGluIGxpbnV4LW5leHQpIHdlJ2QgbGlrZSB0byB1dGlsaXplDQrCoCDCoGl0 IGFuZCBoYXZlIGEgY2xlYW5lciBhbmQgbW9yZSB1bml2ZXJzYWwgc29sdXRpb24gdG8gdGhlIHBy b2JsZW0uDQoNCsKgIMKgVGhhdCdzIGhvdyBpdCBjb3VsZCBiZSBkb25lIC3CoGh0dHA6Ly9wYXRj aHdvcmsub3psYWJzLm9yZy9wYXRjaC84MDEyNDAvDQrCoCDCoEJhc2ljYWxseSBpbiBhcmNoaXRl Y3R1cmUncyB0aW1lX2luaXQoKSB3ZSBjaGVjayBpZiB0aGVyZSdzIGV4cGxpY2l0bHkNCsKgIMKg c3BlY2lmaWVkICJjbG9jay1mcmVxdWVuY3kiIHBhcmFtZXRlciBpbiBjcHUncyBub2RlIGluIERl dmljZSBUcmVlIGFuZA0KwqAgwqBpZiB0aGVyZSdzIG9uZSB3ZSBzZXQgaXQgdmlhIGp1c3QgaW5z dGFudGlhdGVkIGNsayBkcml2ZXIuDQoNCldlIG1heSBpbmRlZWQgcHJvY2VlZCB3aXRoIG1lbnRp b25lZCBzb2x1dGlvbiBmb3IgQVJDIGJ1dCBpZiB0aGF0IG1ha2VzDQpzZW5zZSBmb3Igc29tZWJv ZHkgZWxzZSBpdCBtaWdodCB3b3J0aCBnZXR0aW5nIHNvbWV0aGluZyBzaW1pbGFyIGluIGdlbmVy aWMNCmluaXQgY29kZS4gQW55IHRob3VnaHRzPw0KDQpBbGwgY29tbWVudHMgYW5kIHN1Z2dlc3Rp b25zIGFyZSBtb3JlIHRoYW4gd2VsY29tZS4NCg0KLUFsZXhleQ==