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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 4CA1BECE58C for ; Fri, 11 Oct 2019 13:13:50 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 20A01206A1 for ; Fri, 11 Oct 2019 13:13:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="KgGxpOcl"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ti.com header.i=@ti.com header.b="QJcK449t" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 20A01206A1 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=AgYbu4GGR/GxbqQSreXZfelEbOhKtENKSBISaAMw9zE=; b=KgGxpOclj+3aMv 07d+xgNUJoZzwC3bl/Ox86DOOoVkeHWxJ1/hNHulPgXuJwZGADfDQw7zXCFU5hFJe6rtL9RvkdmaV 7oy2/aYUeXORIEiILzhSdyQ6d5KJXx4mM3Lp5Ln6KwnBeYOHNH/iEZq/aumlQCCgaRQOtpT32gQIv MdFhlkNQvz8FwJbW/7xIS4eMZbNBOQ09CI3Yriqh6sSIKirhUCzhZtFMyXPor0n8YpBflky24K7FX DQ6njUY5uOnA8V6Qwj+UAXx2mzGNKR0afdrn9B1t1E0Pwdq0eG1MZV6juaMNYWxFYoJOL5R9LPAJT p6KrDk+UUgtN89yUZIoQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iIujs-0004Lj-RH; Fri, 11 Oct 2019 13:13:48 +0000 Received: from fllv0016.ext.ti.com ([198.47.19.142]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iIujp-0004L1-Bu; Fri, 11 Oct 2019 13:13:47 +0000 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x9BDD8jY081939; Fri, 11 Oct 2019 08:13:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1570799588; bh=YLTCfOlEBhXcof9xWJVf65ZhWo8Svt9kMFx3/wfvMnA=; h=Subject:To:CC:References:From:Date:In-Reply-To; b=QJcK449tp6L1Ph2cMGQr6+cCdoXIxnEGEVewj2wNc+rsQ0eJijCa29gNHsSxYLwsE FHm6nompV9YItAiKvMiIL2+tbnGREsYP6IqXQzJmZ9A1EMr24qi14igsr7pk5++eFP 4xgNThi/pzRd0HcA/jCkHtP/dl2AIGpk8xSFQWP8= Received: from DLEE105.ent.ti.com (dlee105.ent.ti.com [157.170.170.35]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x9BDD842087479 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 11 Oct 2019 08:13:08 -0500 Received: from DLEE106.ent.ti.com (157.170.170.36) by DLEE105.ent.ti.com (157.170.170.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Fri, 11 Oct 2019 08:13:04 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE106.ent.ti.com (157.170.170.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Fri, 11 Oct 2019 08:13:08 -0500 Received: from [172.24.145.136] (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id x9BDD2tQ115521; Fri, 11 Oct 2019 08:13:03 -0500 Subject: Re: [PATCH 04/16] mtd: spi-nor: aspeed: Add read training To: Boris Brezillon , =?UTF-8?Q?C=c3=a9dric_Le_Goater?= References: <20191004115919.20788-1-clg@kaod.org> <20191004115919.20788-5-clg@kaod.org> <20191011142805.6cc3905c@dhcp-172-31-174-146.wireless.concordia.ca> From: Vignesh Raghavendra Message-ID: Date: Fri, 11 Oct 2019 18:43:33 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20191011142805.6cc3905c@dhcp-172-31-174-146.wireless.concordia.ca> Content-Language: en-US X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191011_061345_491966_234A804A X-CRM114-Status: GOOD ( 21.83 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , linux-aspeed@lists.ozlabs.org, Tudor Ambarus , Andrew Jeffery , Richard Weinberger , Marek Vasut , linux-mtd@lists.infradead.org, Joel Stanley , Miquel Raynal , Brian Norris , David Woodhouse , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org SGkgQ2VkcmljLAoKT24gMTEvMTAvMTkgNTo1OCBQTSwgQm9yaXMgQnJlemlsbG9uIHdyb3RlOgo+ IE9uIEZyaSwgIDQgT2N0IDIwMTkgMTM6NTk6MDcgKzAyMDAKPiBDw6lkcmljIExlIEdvYXRlciA8 Y2xnQGthb2Qub3JnPiB3cm90ZToKPiAKPj4gKyNkZWZpbmUgQVNQRUVEX1NNQ19IQ0xLX0RJVihp KSBcCj4+ICsJKGFzcGVlZF9zbWNfaGNsa19kaXZzWyhpKSAtIDFdIDw8IENPTlRST0xfQ0xPQ0tf RlJFUV9TRUxfU0hJRlQpCj4+ICsKPj4gK3N0YXRpYyB1MzIgYXNwZWVkX3NtY19kZWZhdWx0X3Jl YWQoc3RydWN0IGFzcGVlZF9zbWNfY2hpcCAqY2hpcCkKPj4gK3sKPj4gKwkvKgo+PiArCSAqIEtl ZXAgdGhlIDRCeXRlIGFkZHJlc3MgbW9kZSBvbiB0aGUgQVNUMjQwMCBTUEkgY29udHJvbGxlci4K Pj4gKwkgKiBPdGhlciBjb250cm9sbGVycyBzZXQgdGhlIDRCeXRlIG1vZGUgaW4gdGhlIENFIENv bnRyb2wKPj4gKwkgKiBSZWdpc3Rlcgo+PiArCSAqLwo+PiArCXUzMiBjdGxfbWFzayA9IGNoaXAt PmNvbnRyb2xsZXItPmluZm8gPT0gJnNwaV8yNDAwX2luZm8gPwo+PiArCQkgQ09OVFJPTF9JT19B RERSRVNTXzRCIDogMDsKPj4gKwo+PiArCXJldHVybiAoY2hpcC0+Y3RsX3ZhbFtzbWNfcmVhZF0g JiBjdGxfbWFzaykgfAo+PiArCQkoMHgwMCA8PCAyOCkgfCAvKiBTaW5nbGUgYml0ICovCj4+ICsJ CSgweDAwIDw8IDI0KSB8IC8qIENFIyBtYXggKi8KPj4gKwkJKDB4MDMgPDwgMTYpIHwgLyogdXNl IG5vcm1hbCByZWFkcyAqLwo+PiArCQkoMHgwMCA8PCAgOCkgfCAvKiBIQ0xLLzE2ICovCj4+ICsJ CSgweDAwIDw8ICA2KSB8IC8qIG5vIGR1bW15IGN5Y2xlICovCj4+ICsJCSgweDAwKTsgICAgICAg IC8qIG5vcm1hbCBtb2RlICovCj4gCj4gSUlVQywgeW91J3JlIHVzaW5nIGEgU1BJTk9SX09QX1JF QUQgb3BlcmF0aW9uIHRvIHJlYWQgdGhlIGdvbGRlbgo+IGJ1ZmZlciwgYW5kIGlmIEknbSByaWdo dCwgeW91IHN0YXJ0IHJlYWRpbmcgYXQgb2Zmc2V0IDAgb2YgdGhlIGRpcm1hcAo+IHdpbmRvdyAo b2Zmc2V0IDAgaW4gdGhlIGZsYXNoKSwgc28gYmFzaWNhbGx5IHRoZSBmaXJzdCBibG9jayBpbiB0 aGUgTk9SLgo+IFdoYXQgaGFwcGVucyBpZiB0aGlzIGJsb2NrIGlzIGVyYXNlZD8gSW4gdGhhdCBj YXNlIHlvdXIgZ29sZGVuIGJ1ZiB3aWxsCj4gY29udGFpbiBvbmx5IDB4ZmYgdmFsdWVzLCBhbmQg dGhlIHJlYWQgY2FsaWJyYXRpb24gaXMgbGlrZWx5IHRvIGJlCj4gdXNlbGVzcyAoaG93IGNhbiB5 b3UgZGV0ZXJtaW5lIGlmIHRpbWluZ3MgYXJlIGdvb2Qgd2hlbiBJTyBwaW5zIGFsd2F5cwo+IHN0 YXkgaGlnaCkuIERvbid0IHdlIGhhdmUgYSBjb21tYW5kIHRoYXQgcmV0dXJuIG5vbi1mZi9ub24t MCBkYXRhIHdoaWxlCj4gc3RpbGwgYmVpbmcgcHJlZGljdGFibGUgYW5kIGltbXV0YWJsZT8gRG8g eW91IGV4cGVjdCB1c2VycyB0byBhbHdheXMKPiBmbGFzaCBhIHBhdHRlcm4gdGhhdCBoZWxwcyBj YWxpYnJhdGluZyB0aG9zZSBkZWxheXM/Cj4gCgpZZXMsIHRoaXMgaXMgcHJlY2lzZWx5IG15IGNv bmNlcm4gYXMgd2VsbC4gSSBoYXZlIGJlZW4gZGV2ZWxvcGluZwp0cmFpbmluZyBzZXF1ZW5jZSBm b3IgY2FkZW5jZS1xdWFkc3BpIGNvbnRyb2xsZXIgKHJlcXVpcmVtZW50cyBhcmUKc2ltaWxhciB0 byB3aGF0IHlvdSBoYXZlIGhlcmUpIGFuZCBmb3VuZCB0aGF0IGl0cyBiZXR0ZXIgdG8gdXNlIHJl YWQKb25seSBkYXRhIHN1Y2ggYXMgU0ZEUCB0YWJsZSBkYXRhIHRvIGNhbGlicmF0ZS4gQ2FkZW5j ZS1xdWFkc3BpIHJlcXVpcmVzCnRyYWluaW5nIG9ubHkgaW4gaGlnaGVyIHBlcmZvcm1hbmNlIG1v ZGVzIGxpa2UgUXVhZC9PY3RhbCBEVFIgbW9kZSBhbmQKbmVlZHMgMTYgYnl0ZXMgb2Yga25vd24g ZGF0YSBmb3IgY2FsaWJyYXRpb24uIEhlbmNlIFNGRFAgd29ya3Mgd2VsbCBmb3IKbXkgY2FzZS4K QnV0IHRoZSBwcm9ibGVtIGhlcmUgaXMgdGhhdCwgYXNwZWVkIGNvbnRyb2xsZXIgbmVlZHMgMTZL IG9mIGtub3duIGRhdGEuClNGRFAgdGFibGUgaXMgbm90IHRoYXQgYmlnIGFuZCByZWFkIGJleW9u ZCBhZGRyZXNzIHNwYWNlIGlzIG5vdCByZXF1aXJlZAp0byB3cmFwIGFyb3VuZC4KV29uZGVyaW5n IGlmIHlvdSByZWFsbHkgbmVlZCB0byByZWFkIDE2SyBhbW91bnQgb2YgZGF0YSBmb3IgY2FsaWJy YXRpb24/CgpSZWdhcmRzClZpZ25lc2gKCj4+ICt9Cj4+ICsKPj4gK3N0YXRpYyBpbnQgYXNwZWVk X3NtY19vcHRpbWl6ZV9yZWFkKHN0cnVjdCBhc3BlZWRfc21jX2NoaXAgKmNoaXAsCj4+ICsJCQkJ ICAgIHUzMiBtYXhfZnJlcSkKPj4gK3sKPj4gKwl1OCAqZ29sZGVuX2J1ZiwgKnRlc3RfYnVmOwo+ PiArCWludCBpLCByYywgYmVzdF9kaXYgPSAtMTsKPj4gKwl1MzIgc2F2ZV9yZWFkX3ZhbCA9IGNo aXAtPmN0bF92YWxbc21jX3JlYWRdOwo+PiArCXUzMiBhaGJfZnJlcSA9IGNoaXAtPmNvbnRyb2xs ZXItPmNsa19mcmVxdWVuY3k7Cj4+ICsKPj4gKwlkZXZfZGJnKGNoaXAtPm5vci5kZXYsICJBSEIg ZnJlcXVlbmN5OiAlZCBNSHoiLCBhaGJfZnJlcSAvIDEwMDAwMDApOwo+PiArCj4+ICsJdGVzdF9i dWYgPSBrbWFsbG9jKENBTElCUkFURV9CVUZfU0laRSAqIDIsIEdGUF9LRVJORUwpOwo+PiArCWdv bGRlbl9idWYgPSB0ZXN0X2J1ZiArIENBTElCUkFURV9CVUZfU0laRTsKPj4gKwo+PiArCS8qIFdl IHN0YXJ0IHdpdGggdGhlIGR1bWJlc3Qgc2V0dGluZyAoa2VlcCA0Qnl0ZSBiaXQpIGFuZCByZWFk Cj4+ICsJICogc29tZSBkYXRhCj4+ICsJICovCj4+ICsJY2hpcC0+Y3RsX3ZhbFtzbWNfcmVhZF0g PSBhc3BlZWRfc21jX2RlZmF1bHRfcmVhZChjaGlwKTsKPj4gKwo+PiArCXdyaXRlbChjaGlwLT5j dGxfdmFsW3NtY19yZWFkXSwgY2hpcC0+Y3RsKTsKPj4gKwo+PiArCW1lbWNweV9mcm9taW8oZ29s ZGVuX2J1ZiwgY2hpcC0+YWhiX2Jhc2UsIENBTElCUkFURV9CVUZfU0laRSk7Cj4+ICsKPj4gKwkv KiBFc3RhYmxpc2ggb3VyIHJlYWQgbW9kZSB3aXRoIGZyZXEgZmllbGQgc2V0IHRvIDAgKEhDTEsv MTYpICovCj4+ICsJY2hpcC0+Y3RsX3ZhbFtzbWNfcmVhZF0gPSBzYXZlX3JlYWRfdmFsICYgMHhm ZmZmZjBmZjsKPj4gKwo+PiArCS8qIENoZWNrIGlmIGNhbGlicmF0aW9uIGRhdGEgaXMgc3VpdGFi bGUgKi8KPj4gKwlpZiAoIWFzcGVlZF9zbWNfY2hlY2tfY2FsaWJfZGF0YShnb2xkZW5fYnVmLCBD QUxJQlJBVEVfQlVGX1NJWkUpKSB7Cj4+ICsJCWRldl9pbmZvKGNoaXAtPm5vci5kZXYsCj4+ICsJ CQkgIkNhbGlicmF0aW9uIGFyZWEgdG9vIHVuaWZvcm0sIHVzaW5nIGxvdyBzcGVlZCIpOwo+PiAr CQl3cml0ZWwoY2hpcC0+Y3RsX3ZhbFtzbWNfcmVhZF0sIGNoaXAtPmN0bCk7Cj4+ICsJCWtmcmVl KHRlc3RfYnVmKTsKPj4gKwkJcmV0dXJuIDA7Cj4+ICsJfQo+PiArCj4+ICsJLyogTm93IHdlIGl0 ZXJhdGUgdGhlIEhDTEsgZGl2aWRlcnMgdW50aWwgd2UgZmluZCBvdXIgYnJlYWtpbmcgcG9pbnQg Ki8KPj4gKwlmb3IgKGkgPSBBUlJBWV9TSVpFKGFzcGVlZF9zbWNfaGNsa19kaXZzKTsgaSA+IDA7 IGktLSkgewo+PiArCQl1MzIgdHYsIGZyZXE7Cj4+ICsKPj4gKwkJLyogQ29tcGFyZSB0aW1pbmcg dG8gbWF4ICovCj4+ICsJCWZyZXEgPSBhaGJfZnJlcSAvIGk7Cj4+ICsJCWlmIChmcmVxID4gbWF4 X2ZyZXEpCj4+ICsJCQljb250aW51ZTsKPj4gKwo+PiArCQkvKiBTZXQgdGhlIHRpbWluZyAqLwo+ PiArCQl0diA9IGNoaXAtPmN0bF92YWxbc21jX3JlYWRdIHwgQVNQRUVEX1NNQ19IQ0xLX0RJVihp KTsKPj4gKwkJd3JpdGVsKHR2LCBjaGlwLT5jdGwpOwo+PiArCQlkZXZfZGJnKGNoaXAtPm5vci5k ZXYsICJUcnlpbmcgSENMSy8lZC4uLiIsIGkpOwo+PiArCQlyYyA9IGFzcGVlZF9zbWNfY2FsaWJy YXRlX3JlYWRzKGNoaXAsIGksIGdvbGRlbl9idWYsIHRlc3RfYnVmKTsKPj4gKwkJaWYgKHJjID09 IDApCj4+ICsJCQliZXN0X2RpdiA9IGk7Cj4+ICsJfQo+PiArCWtmcmVlKHRlc3RfYnVmKTsKPj4g Kwo+PiArCS8qIE5vdGhpbmcgZm91bmQgPyAqLwo+PiArCWlmIChiZXN0X2RpdiA8IDApIHsKPj4g KwkJZGV2X3dhcm4oY2hpcC0+bm9yLmRldiwgIk5vIGdvb2QgZnJlcXVlbmN5LCB1c2luZyBkdW1i IHNsb3ciKTsKPj4gKwl9IGVsc2Ugewo+PiArCQlkZXZfZGJnKGNoaXAtPm5vci5kZXYsICJGb3Vu ZCBnb29kIHJlYWQgdGltaW5ncyBhdCBIQ0xLLyVkIiwKPj4gKwkJCWJlc3RfZGl2KTsKPj4gKwkJ Y2hpcC0+Y3RsX3ZhbFtzbWNfcmVhZF0gfD0gQVNQRUVEX1NNQ19IQ0xLX0RJVihiZXN0X2Rpdik7 Cj4+ICsJfQo+PiArCj4+ICsJd3JpdGVsKGNoaXAtPmN0bF92YWxbc21jX3JlYWRdLCBjaGlwLT5j dGwpOwo+PiArCXJldHVybiAwOwo+PiArfQo+IAo+IAoKLS0gClJlZ2FyZHMKVmlnbmVzaAoKX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkxpbnV4 IE1URCBkaXNjdXNzaW9uIG1haWxpbmcgbGlzdApodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9t YWlsbWFuL2xpc3RpbmZvL2xpbnV4LW10ZC8K