From mboxrd@z Thu Jan 1 00:00:00 1970 From: Trent Piepho Subject: Re: [PATCH 3/3] eeprom: at25: Split writes in two SPI transfers to optimize DMA Date: Wed, 10 Oct 2018 21:47:44 +0000 Message-ID: <1539208063.1944.12.camel@impinj.com> References: <20181010134036.8296-1-geert+renesas@glider.be> <20181010134036.8296-4-geert+renesas@glider.be> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: "linux-spi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-mtd@vger.kernel.org" To: "geert+renesas@glider.be" , "srinivas.kandagatla@linaro.org" , "gregkh@linuxfoundation.org" , "arnd@arndb.de" Return-path: In-Reply-To: <20181010134036.8296-4-geert+renesas@glider.be> Content-Language: en-US Content-ID: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org T24gV2VkLCAyMDE4LTEwLTEwIGF0IDE1OjQwICswMjAwLCBHZWVydCBVeXR0ZXJob2V2ZW4gd3Jv dGU6DQo+IEN1cnJlbnRseSBFRVBST00gd3JpdGVzIGFyZSBpbXBsZW1lbnRlZCB1c2luZyBhIHNp bmdsZSBTUEkgdHJhbnNmZXIsDQo+IHdoaWNoIGNvbnRhaW5zIGFsbCBvZiBjb21tYW5kLCBhZGRy ZXNzLCBhbmQgcGF5bG9hZCBkYXRhIGJ5dGVzLg0KPiBBcyBzb21lIFNQSSBjb250cm9sbGVycyBp bXBvc2UgbGltaXRhdGlvbnMgb24gdHJhbnNmZXJzIHdpdGggcmVzcGVjdCB0bw0KPiB0aGUgdXNl IG9mIERNQSwgdGhleSBtYXkgaGF2ZSB0byBmYWxsIGJhY2sgdG8gUElPLiBFLmcuIERNQSBtYXkg cmVxdWlyZQ0KPiB0aGUgdHJhbnNmZXIgbGVuZ3RoIHRvIGJlIGEgbXVsdGlwbGUgb2YgNCBieXRl cy4NCj4gDQo+IE9wdGltaXplIHdyaXRlcyBmb3IgRE1BIGJ5IHNwbGl0dGluZyB3cml0ZXMgaW4g dHdvIFNQSSB0cmFuc2ZlcnM6DQo+ICAgLSBUaGUgZmlyc3QgdHJhbnNmZXIgY29udGFpbnMgY29t bWFuZCBhbmQgYWRkcmVzcyBieXRlcywNCj4gICAtIFRoZSBzZWNvbmQgdHJhbnNmZXIgY29udGFp bnMgdGhlIGFjdHVhbCBwYXlsb2FkIGRhdGEsIG5vdyBzdG9yZWQgYXQNCj4gICAgIHRoZSBzdGFy dCBvZiB0aGUgKGttYWxsb2MoKSBhbGlnbmVkKSBidWZmZXIsIHRvIGltcHJvdmUgcGF5bG9hZA0K PiAgICAgYWxpZ25tZW50Lg0KDQpEb2VzIHRoaXMgYWx3YXlzIG9wdGltaXplPyAgQSBtYXN0ZXIg Y2FwYWJsZSBvZiBhbiBvZiBhbGlnbmVkIDE4IGJ5dGUNCkRNQSB4ZmVyIHdvdWxkIG5vdyBoYXZl IGEgMiBieXRlIHhmZXIgdGhhdCB3b3VsZCBwcm9iYWJseSBiZSBQSU8NCmZvbGxvd2VkIGJ5IGEg MTYgYnl0ZSBETUEuDQoNCk9yIHdyaXRpbmcgMTQgYnl0ZXMgdG8gdGhlIEVFUFJPTSBoYXMgY2hh bmdlZCBmcm9tIGFuIGFsaWduZWQgMTYgYnl0ZQ0Kd3JpdGUgdG8gYSAyIGJ5dGUgYW5kIGEgMTQg Ynl0ZSwgd2hpY2ggaXMgbm93IHdvcnNlIGZvciB0aGUgNCBieXRlDQptdWx0aXBsZSByZXF1aXJl bWVudCBtYXN0ZXIgd2hpY2ggY2FuIHVzZSBhbnkgRE1BIGFueW1vcmUuDQoNCkl0IHNlZW1zIGxp a2UgYW4gZW5oYW5jZW1lbnQgdG8gdGhlIERNQSBjb2RlIHRvIGxvb2sgbW9yZSBsaWtlIGENCmVm ZmljaWVudCBtZW1jcHkoKSB0aGF0IGFsaWducyB0aGUgYWRkcmVzcywgdGhlbiB4ZmVycyBlZmZp Y2llbnQNCmJsb2NrcywgdGhlbiBmaW5pc2hlcyB0aGUgc3ViLWJsb2NrIHRhaWwgd291bGQgYmUg bW9yZSBnZW5lcmFsbHkNCmFwcGxpY2FibGUuDQoNCk9yIG1vcmUgc2ltcGx5LCBnaXZlbiBhbiBh bGlnbmVkIDE4IGJ5dGUgeGZlciwgdGhlIGRyaXZlciBzaG91bGQgZG8gYW4NCmFsaWduZWQgMTYg Ynl0ZSBETUEgYW5kIHRoZW4gdHdvIG1vcmUgYnl0ZXMuDQo=