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Fri, 23 Oct 2026 09:52:05 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 426EB10328BF4; Fri, 23 Oct 2026 11:52:00 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1792749124; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=hGktRpAovBNP2O/hbEpgY8U5f/oq3Xu2oDGMSALMQuM=; b=DW8YfnRJV9XAKi/jv8v6qHBDZJqJ+626gsZ4gcIQRZnswwef9yBaCgHKequgDHpGIWmcVd uyHh/UlBRIM8CmqkHC8iRJs7bcLcei4bf+xD0XWyUcYC+kFx9OnF/OCIdCuofu3SpD8o/3 fhQhRRwHpZ5my1R9rKmSZW2OyenqBggHnYNicZUUQF2PVG48NYRU9UzOgM+9pjMg9ACLyG 7ErYUw9qvvmDwHPoxzYHgwS/PdFjHx0RzGL2UjE4j3oiKXgOutmo49asaLNsI60gVuT9dS QvBDz4ds4xvIOFgiyvwXFsZfEeMqRw1TURbcP9z6Q4mmPggB5H8KXrd2D6ncxw== From: Miquel Raynal To: Changhuang Liang Cc: Pratyush Yadav , Michael Walle , Takahiro Kuwano , Mark Brown , Richard Weinberger , Vignesh Raghavendra , "linux-spi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-mtd@lists.infradead.org" Subject: Re: [PATCH v1 1/4] spi: dw: Add DDR (Dual Data-Rate) support for enhanced SPI mode In-Reply-To: (Changhuang Liang's message of "Fri, 23 Oct 2026 09:42:56 +0000") References: <20261022102614.75696-1-changhuang.liang@starfivetech.com> <20261022102614.75696-2-changhuang.liang@starfivetech.com> <87bj8mqaof.fsf@bootlin.com> User-Agent: mu4e 1.12.12; emacs 30.2 Date: Fri, 23 Oct 2026 11:52:00 +0200 Message-ID: <877bj8pwvz.fsf@bootlin.com> X-Archived-By: MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261023_025208_653061_B356FA1D X-CRM114-Status: GOOD ( 12.47 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" X-Spam-Status: No, score=-9.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Cj4+ID4gLS0tIGEvZHJpdmVycy9zcGkvc3BpLWR3LWNvcmUuYwo+PiA+ICsrKyBiL2RyaXZlcnMv c3BpL3NwaS1kdy1jb3JlLmMKPj4gPiBAQCAtNDYsNiArNDYsOCBAQCBzdHJ1Y3QgZHdfc3BpX2Vu aF9jZmcgewo+PiA+ICAJdTggaW5zdF9sOwo+PiA+ICAJdTggYWRkcl9sOwo+PiA+ICAJdTggdHJh bnNfdDsKPj4gPiArCWJvb2wgaW5zdF9kZHI7Cj4+ID4gKwlib29sIHNwaV9kZHI7Cj4+IAo+PiBJ ZiBJIHVuZGVyc3RhbmQgdGhpcyBjb3JyZWN0bHksIHNwaV9kZHIgaXMgcXVpdGUgYSBiYWQgbmFt ZSBiZWNhdXNlIGl0IG1lYW5zCj4+IGFkZHJlc3MgYW5kIGR1bW15IGFuZCBkYXRhIGRkciAoYnV0 IG5vdCBpbnN0cikuIENhbiB5b3UgdHJ5IHRvIGNvbWUgdXAgd2l0aAo+PiBhIGJldHRlciBuYW1l IGZvciB0aGlzIHZhcmlhYmxlPwo+Cj4gc3BpX2RkciBpcyBuYW1lZCBleGFjdGx5IHRoYXQgd2F5 IG9uIHRoZSByZWdpc3RlciBmaWVsZC4gUGVyaGFwcyBJIHdvbid0IGNoYW5nZSAKPiB0aGlzIHZh cmlhYmxlIG5hbWUsIGFuZCBqdXN0IGFkZCBzb21lIGNvbW1lbnRzIHRvIHRoaXMgdmFyaWFibGXi gJR3aGF0Cj4gZG8geW91IHRoaW5rPwoKVGhpcyBpcyBhIGJvb2xlYW4sIG5vdCBhIHJlZ2lzdGVy IGJpdCBmaWVsZC4gUGxlYXNlIHVzZSBhIG5hbWUgdGhhdAptYWtlcyBzZW5zZSBoZXJlLiBUaGlz IGlzIHRoZSBwYXJ0IG9mIHRoZSBzb2Z0d2FyZSB0aGF0IHBlb3BsZSBtdXN0CnVuZGVyc3RhbmRp bmcgd2l0aG91dCBkZWVwIGhhcmR3YXJlIGtub3dsZWdlLiBZb3UgY2FuIGtlZXAgdGhlIGhhcmR3 YXJlCm5hbWUgZm9yIG5hbWluZyB0aGUgYml0ZmllbGQgb3BlcmF0aW9uIGlmIHRoYXQncyByZWxl dmFudCB0aG91Z2guCgo+PiBBbHNvLCBpZiBteSBhYm92ZSB1bmRlcnN0YW5kaW5nIGlzIGNvcnJl Y3QsIHlvdSBtdXN0IHByb3ZpZGUgYQo+PiBzdXBwb3J0c19vcCgpIGNhbGxiYWNrIHdoaWNoIHdv dWxkIHJlZnVzZSBhbnkgeFMteFMteEQgYnV0IGFsbG93IHhELXhELXhECj4+IGFuZCB4Uy14RC1E IG1vZGVzLgo+Cj4gT0ssIEknbGwgYWRkIHNvbWUgZmlsdGVyIGNvbmRpdGlvbnMuCj4KPiBCZXN0 IFJlZ2FyZHMsCj4gQ2hhbmdodWFuZwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCkxpbnV4IE1URCBkaXNjdXNzaW9uIG1haWxpbmcgbGlzdApo dHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LW10ZC8K