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Tue, 14 Sep 2021 20:29:27 -0700 (PDT) Subject: Re: [RFC 05/19] devfreq: imx8m-ddrc: Use the opps acquired from EL3 To: Abel Vesa , Rob Herring , Dong Aisheng , Shawn Guo , Sascha Hauer , Fabio Estevam , "catalin.marinas@arm.com" , Will Deacon , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Georgi Djakov , Adrian Hunter , Ulf Hansson , Ahmad Fatoum Cc: Pengutronix Kernel Team , linux-serial@vger.kernel.org, NXP Linux Team , Linux Kernel Mailing List , devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <1631554694-9599-1-git-send-email-abel.vesa@nxp.com> <1631554694-9599-6-git-send-email-abel.vesa@nxp.com> From: Chanwoo Choi Message-ID: Date: Wed, 15 Sep 2021 12:29:20 +0900 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <1631554694-9599-6-git-send-email-abel.vesa@nxp.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210914_202930_365220_CE9F9DE4 X-CRM114-Status: GOOD ( 29.99 ) 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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGksCgpPUFAgaXMgbWFuZGF0b3J5IGZvciBkZXZmcmVxIGRyaXZlci4gQWxzbywgbXVzdCBuZWVk IHRvIGFkZAp0aGUgT1BQIGxldmVscyB0byAgZGV2aWNldHJlZSBmaWxlLCBpdCBpcyBiZXR0ZXIg dG8gc2hvdwp0aGUgc3VwcG9ydGVkIE9QUCBsaXN0IGZvciB0aGUgZGV2ZWxvcGVyIHdobyBkb24n dCBrbm93CnRoZSBkZXRhaWxlZCBiYWNrZ3JvdW5kIG9mIGRyaXZlci4gSWYgdGhlcmUgYXJlIG5v IGFueQpjcml0aWNhbCBpc3N1ZS4gSSBwcmVmZXIgdGhlIGV4aXN0aW5nIGFwcHJvYWNoIGZvciB0 aGUgcmVhZGFiaWxpdHkuCgpPbiAyMS4gOS4gMTQuIOyYpOyghCAyOjM4LCBBYmVsIFZlc2Egd3Jv dGU6Cj4gaS5NWDhNIHBsYXRmb3JtcyBnZXQgdGhlaXIgZHJhbSBPUFBzIGZyb20gdGhlIEVMMy4K PiBXZSBkb24ndCBuZWVkIHRvIGR1cGxpY2F0ZSB0aGF0IGluIHRoZSBrZXJuZWwgZHJhbSBkdHMg bm9kZS4KPiBXZSBzaG91bGQganVzdCB0cnVzdCB0aGUgT1BQcyBwcm92aWRlZCBieSB0aGUgRUwz Lgo+IAo+IFNpZ25lZC1vZmYtYnk6IEFiZWwgVmVzYSA8YWJlbC52ZXNhQG54cC5jb20+Cj4gLS0t Cj4gICBkcml2ZXJzL2RldmZyZXEvaW14OG0tZGRyYy5jIHwgNTAgKysrLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tCj4gICAxIGZpbGUgY2hhbmdlZCwgMyBpbnNlcnRpb25zKCspLCA0 NyBkZWxldGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9kZXZmcmVxL2lteDhtLWRk cmMuYyBiL2RyaXZlcnMvZGV2ZnJlcS9pbXg4bS1kZHJjLmMKPiBpbmRleCA1ODMxMjNiZjIxMDAu LmYxOGE1YzNjMWMwMyAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2RldmZyZXEvaW14OG0tZGRyYy5j Cj4gKysrIGIvZHJpdmVycy9kZXZmcmVxL2lteDhtLWRkcmMuYwo+IEBAIC0zMjEsMzggKzMyMSw5 IEBAIHN0YXRpYyBpbnQgaW14OG1fZGRyY19pbml0X2ZyZXFfaW5mbyhzdHJ1Y3QgZGV2aWNlICpk ZXYpCj4gICAJCWlmIChmcmVxLT5kcmFtX2NvcmVfcGFyZW50X2luZGV4ID09IDIgJiYKPiAgIAkJ CQlmcmVxLT5kcmFtX2FsdF9wYXJlbnRfaW5kZXggPT0gMCkKPiAgIAkJCXJldHVybiAtRU5PREVW Owo+IC0JfQo+IC0KPiAtCXJldHVybiAwOwo+IC19Cj4gLQo+IC1zdGF0aWMgaW50IGlteDhtX2Rk cmNfY2hlY2tfb3BwcyhzdHJ1Y3QgZGV2aWNlICpkZXYpCj4gLXsKPiAtCXN0cnVjdCBpbXg4bV9k ZHJjICpwcml2ID0gZGV2X2dldF9kcnZkYXRhKGRldik7Cj4gLQlzdHJ1Y3QgaW14OG1fZGRyY19m cmVxICpmcmVxX2luZm87Cj4gLQlzdHJ1Y3QgZGV2X3BtX29wcCAqb3BwOwo+IC0JdW5zaWduZWQg bG9uZyBmcmVxOwo+IC0JaW50IGksIG9wcF9jb3VudDsKPiAtCj4gLQkvKiBFbnVtZXJhdGUgRFQg T1BQcyBhbmQgZGlzYWJsZSB0aG9zZSBub3Qgc3VwcG9ydGVkIGJ5IGZpcm13YXJlICovCj4gLQlv cHBfY291bnQgPSBkZXZfcG1fb3BwX2dldF9vcHBfY291bnQoZGV2KTsKPiAtCWlmIChvcHBfY291 bnQgPCAwKQo+IC0JCXJldHVybiBvcHBfY291bnQ7Cj4gLQlmb3IgKGkgPSAwLCBmcmVxID0gMDsg aSA8IG9wcF9jb3VudDsgKytpLCArK2ZyZXEpIHsKPiAtCQlvcHAgPSBkZXZfcG1fb3BwX2ZpbmRf ZnJlcV9jZWlsKGRldiwgJmZyZXEpOwo+IC0JCWlmIChJU19FUlIob3BwKSkgewo+IC0JCQlkZXZf ZXJyKGRldiwgIkZhaWxlZCBlbnVtZXJhdGluZyBPUFBzOiAlbGRcbiIsCj4gLQkJCQlQVFJfRVJS KG9wcCkpOwo+IC0JCQlyZXR1cm4gUFRSX0VSUihvcHApOwo+IC0JCX0KPiAtCQlkZXZfcG1fb3Bw X3B1dChvcHApOwo+ICAgCj4gLQkJZnJlcV9pbmZvID0gaW14OG1fZGRyY19maW5kX2ZyZXEocHJp diwgZnJlcSk7Cj4gLQkJaWYgKCFmcmVxX2luZm8pIHsKPiAtCQkJZGV2X2luZm8oZGV2LCAiRGlz YWJsZSB1bnN1cHBvcnRlZCBPUFAgJWx1SHogJWx1TVQvc1xuIiwKPiAtCQkJCQlmcmVxLCBESVZf Uk9VTkRfQ0xPU0VTVChmcmVxLCAyNTAwMDApKTsKPiAtCQkJZGV2X3BtX29wcF9kaXNhYmxlKGRl diwgZnJlcSk7Cj4gLQkJfQo+ICsJCWlmIChkZXZfcG1fb3BwX2FkZChkZXYsIGZyZXEtPnJhdGUg KiAyNTAwMDAsIDApKQo+ICsJCQlyZXR1cm4gLUVOT0RFVjsKPiAgIAl9Cj4gICAKPiAgIAlyZXR1 cm4gMDsKPiBAQCAtMzYwLDcgKzMzMSw2IEBAIHN0YXRpYyBpbnQgaW14OG1fZGRyY19jaGVja19v cHBzKHN0cnVjdCBkZXZpY2UgKmRldikKPiAgIAo+ICAgc3RhdGljIHZvaWQgaW14OG1fZGRyY19l eGl0KHN0cnVjdCBkZXZpY2UgKmRldikKPiAgIHsKPiAtCWRldl9wbV9vcHBfb2ZfcmVtb3ZlX3Rh YmxlKGRldik7Cj4gICB9Cj4gICAKPiAgIHN0YXRpYyBpbnQgaW14OG1fZGRyY19wcm9iZShzdHJ1 Y3QgcGxhdGZvcm1fZGV2aWNlICpwZGV2KQo+IEBAIC00MDcsMTYgKzM3Nyw3IEBAIHN0YXRpYyBp bnQgaW14OG1fZGRyY19wcm9iZShzdHJ1Y3QgcGxhdGZvcm1fZGV2aWNlICpwZGV2KQo+ICAgCQly ZXR1cm4gcmV0Owo+ICAgCX0KPiAgIAo+IC0JcmV0ID0gZGV2X3BtX29wcF9vZl9hZGRfdGFibGUo ZGV2KTsKPiAtCWlmIChyZXQgPCAwKSB7Cj4gLQkJZGV2X2VycihkZXYsICJmYWlsZWQgdG8gZ2V0 IE9QUCB0YWJsZVxuIik7Cj4gLQkJcmV0dXJuIHJldDsKPiAtCX0KPiAtCj4gLQlyZXQgPSBpbXg4 bV9kZHJjX2NoZWNrX29wcHMoZGV2KTsKPiAtCWlmIChyZXQgPCAwKQo+IC0JCWdvdG8gZXJyOwo+ IC0KPiArCXByaXYtPnByb2ZpbGUucG9sbGluZ19tcyA9IDEwMDA7CgpUaGlzIGNoYW5nZSBpcyBu b3QgcmVsYXRlZCB0byByb2xlIG9mIHRoaXMgcGF0Y2guCk5lZWQgdG8gbWFrZSB0aGUgc2VwYXJh dGUgcGF0Y2guCgo+ICAgCXByaXYtPnByb2ZpbGUudGFyZ2V0ID0gaW14OG1fZGRyY190YXJnZXQ7 Cj4gICAJcHJpdi0+cHJvZmlsZS5leGl0ID0gaW14OG1fZGRyY19leGl0Owo+ICAgCXByaXYtPnBy b2ZpbGUuZ2V0X2N1cl9mcmVxID0gaW14OG1fZGRyY19nZXRfY3VyX2ZyZXE7Cj4gQEAgLTQyNywx MyArMzg4LDggQEAgc3RhdGljIGludCBpbXg4bV9kZHJjX3Byb2JlKHN0cnVjdCBwbGF0Zm9ybV9k ZXZpY2UgKnBkZXYpCj4gICAJaWYgKElTX0VSUihwcml2LT5kZXZmcmVxKSkgewo+ICAgCQlyZXQg PSBQVFJfRVJSKHByaXYtPmRldmZyZXEpOwo+ICAgCQlkZXZfZXJyKGRldiwgImZhaWxlZCB0byBh ZGQgZGV2ZnJlcSBkZXZpY2U6ICVkXG4iLCByZXQpOwo+IC0JCWdvdG8gZXJyOwo+ICAgCX0KPiAg IAo+IC0JcmV0dXJuIDA7Cj4gLQo+IC1lcnI6Cj4gLQlkZXZfcG1fb3BwX29mX3JlbW92ZV90YWJs ZShkZXYpOwo+ICAgCXJldHVybiByZXQ7Cj4gICB9Cj4gICAKPiAKCgotLSAKQmVzdCBSZWdhcmRz LApTYW1zdW5nIEVsZWN0cm9uaWNzCkNoYW53b28gQ2hvaQoKX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QK bGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRl YWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=