Message ID | 1543826226-30898-3-git-send-email-yogeshnarayan.gaur@nxp.com |
---|---|
State | Not Applicable |
Headers | show
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Mon, 3 Dec 2018 08:39:12 +0000 From: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> To: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>, "boris.brezillon@bootlin.com" <boris.brezillon@bootlin.com>, "broonie@kernel.org" <broonie@kernel.org>, "marek.vasut@gmail.com" <marek.vasut@gmail.com>, "vigneshr@ti.com" <vigneshr@ti.com>, "linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org> Subject: [PATCH v5 2/7] spi: spi-mem: add support for octal mode I/O data transfer Thread-Topic: [PATCH v5 2/7] spi: spi-mem: add support for octal mode I/O data transfer Thread-Index: AQHUiuOqs754sHK/OUuJcru4Pd1jiw== Date: Mon, 3 Dec 2018 08:39:12 +0000 Message-ID: <1543826226-30898-3-git-send-email-yogeshnarayan.gaur@nxp.com> References: <1543826226-30898-1-git-send-email-yogeshnarayan.gaur@nxp.com> In-Reply-To: <1543826226-30898-1-git-send-email-yogeshnarayan.gaur@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: SG2PR04CA0143.apcprd04.prod.outlook.com (2603:1096:3:16::27) To VI1PR04MB5726.eurprd04.prod.outlook.com (2603:10a6:803:e4::24) authentication-results: spf=none (sender IP is ) smtp.mailfrom=yogeshnarayan.gaur@nxp.com; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" <linux-mtd-bounces@lists.infradead.org> Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org |
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spi: add support for octal mode
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expand
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diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index 62a7b80..5e15d62 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -12,7 +12,7 @@ #include "internals.h" -#define SPI_MEM_MAX_BUSWIDTH 4 +#define SPI_MEM_MAX_BUSWIDTH 8 /** * spi_controller_dma_map_mem_op_data() - DMA-map the buffer attached to a @@ -121,6 +121,13 @@ static int spi_check_buswidth_req(struct spi_mem *mem, u8 buswidth, bool tx) break; + case 8: + if ((tx && (mode & SPI_TX_OCTAL)) || + (!tx && (mode & SPI_RX_OCTAL))) + return 0; + + break; + default: break; }