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received-spf: None (protection.outlook.com: micron.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 7+uEW2YZiRMVNtpOTDgppal68y7jxnTw+mbbGZCU46Wk9bkkfnif7jE4jHmzkwh38vnVK2av3plftTQxN2MtTioz4cC+cX8HY0sBU7+1loRdMYpuY8Y0axFTUk9F6Pzy4gPCv4UK7781Y7M0ZEkp8m70Wg0CCIhx34IBlk1nbMtwtSU4aDFH4hDwB+B4iQWLCfwv4wmWRdQjN4q0gW/5P9YBQ9PJrHZvZMIeBAJAByRw4Sz6jF2gZV9wKdpgVts8i000V8KO6Wwpkde8bqA3OWAbsW4zf+te15JKHoFdxWUV6NykNoXCSBKeHV8i4Nw1UdxfQFKCT/2BwQ/3XJU/0M/tJ2lGbmom+DJwnciUgEq+emqhUI/DXP8fsVljByrUq9MYm0SAeyiugpX3i4q0QH5qO3KpBU1v6sO35YbOorM= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 8d67ad6c-a2b9-4f02-c4ee-08d697e92617 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Feb 2019 10:41:34.0018 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f38a5ecd-2813-4862-b11b-ac1d563c806f X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR08MB5493 X-OriginatorOrg: micron.com X-TM-AS-Product-Ver: SMEX-12.0.0.1782-8.200.1013-24444.005 X-TM-AS-Result: No--1.971100-0.000000-31 X-TM-AS-MatchedID: 150567-139010-704318-703529-704171-708060-702020-702898-7 80016-700648-710970-701249-139704-700047-148004-148007-148020-148050-10019- 20020-41000-42000-42003-63 X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-MT-CheckInternalSenderRule: True X-Scanned-By: MIMEDefang 2.78 on 137.201.82.98 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Vignesh > >Cadence OSPI controller IP supports Octal IO (x8 IO lines), It also has an >integrated PHY. IP register layout is very similar to existing QSPI IP exc= ept for >additional bits to support Octal and Octal DDR mode. Therefore, extend >current driver to support Octal mode. Only Octal SDR read (1-1-8)mode is >supported for now. Does this your Cadence OSPI controller support 8-8-8 IO mode, if yes, Why not directly enable 8-8-8 mode?=20 >Tested with mt35xu512aba Octal flash on TI's AM654 EVM. > >Signed-off-by: Vignesh R >______________________________________________________ >Linux MTD discussion mailing list >http://lists.infradead.org/mailman/listinfo/linux-mtd/ From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Bean Huo (beanhuo)" Subject: RE: [EXT] [PATCH v6 2/2] mtd: spi-nor: cadence-quadspi: Add support for Octal SPI controller Date: Thu, 21 Feb 2019 10:41:33 +0000 Message-ID: References: <20190212083809.6534-1-vigneshr@ti.com> <20190212083809.6534-3-vigneshr@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20190212083809.6534-3-vigneshr@ti.com> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+gldm-linux-mtd-36=gmane.org@lists.infradead.org To: Vignesh R , Boris Brezillon , "Tudor.Ambarus@microchip.com" Cc: "devicetree@vger.kernel.org" , Rob Herring , "linux-mtd@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Marek Vasut List-Id: devicetree@vger.kernel.org Hi, Vignesh > >Cadence OSPI controller IP supports Octal IO (x8 IO lines), It also has an >integrated PHY. IP register layout is very similar to existing QSPI IP except for >additional bits to support Octal and Octal DDR mode. Therefore, extend >current driver to support Octal mode. Only Octal SDR read (1-1-8)mode is >supported for now. Does this your Cadence OSPI controller support 8-8-8 IO mode, if yes, Why not directly enable 8-8-8 mode? >Tested with mt35xu512aba Octal flash on TI's AM654 EVM. > >Signed-off-by: Vignesh R >______________________________________________________ >Linux MTD discussion mailing list >http://lists.infradead.org/mailman/listinfo/linux-mtd/ ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/