From patchwork Tue Jul 5 09:11:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bough Chen X-Patchwork-Id: 12906148 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 260A7C43334 for ; Tue, 5 Jul 2022 09:28:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=iaRP5j8pT93Xn36KuwwoEacwDIqJvtAZx+GoSI4I8GU=; b=YMjphsV3Oo4Xj6 qquH41N/yp1ePLooKIcOUBf2J3ni6e+ZmPYRlwXKcuvhtx0New73vYjuxg50gqecUcba2vD7NCGus r+wYUTqgGqXPUw5bzPsJ7+rlJKtr0bCNDjPqiCOsOgaMCPnVBfMgC+jB6ZAkzOF+iyhF4jCk5ehec h8oR4lQzmBmnSBC4/+T3XTiOeYBviqTMKWvjATRMgj69VvU/DrOqylHM3J62aL/HA+/AXdapGrsJs 9WM42df5/AlJCYHwOeTCwRVSNZQjQP4XoysALM0d3WPX0HxJdRimfQGujlE1eG+QbiU3bPkv1jivY WAptvEEVkxL5cneiJkzQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o8eqd-00GhCY-SO; Tue, 05 Jul 2022 09:27:59 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o8epe-00GgSI-4R; Tue, 05 Jul 2022 09:27:00 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id A31A7200D8E; Tue, 5 Jul 2022 11:26:50 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 755BB200D85; Tue, 5 Jul 2022 11:26:50 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 162B1180222D; Tue, 5 Jul 2022 17:26:48 +0800 (+08) From: haibo.chen@nxp.com To: ashish.kumar@nxp.com, yogeshgaur.83@gmail.com, broonie@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, han.xu@nxp.com, singh.kuldeep87k@gmail.com, tudor.ambarus@microchip.com, p.yadav@ti.com, michael@walle.cc, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mtd@lists.infradead.org, festevam@gmail.com, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, haibo.chen@nxp.com, zhengxunli@mxic.com.tw Subject: [PATCH 03/11] spi: spi-nxp-fspi: add DTR mode support Date: Tue, 5 Jul 2022 17:11:35 +0800 Message-Id: <1657012303-6464-3-git-send-email-haibo.chen@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1657012303-6464-1-git-send-email-haibo.chen@nxp.com> References: <1657012303-6464-1-git-send-email-haibo.chen@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220705_022658_526394_3210674F X-CRM114-Status: GOOD ( 10.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Haibo Chen For LUT, add DTR command support. Signed-off-by: Haibo Chen --- drivers/spi/spi-nxp-fspi.c | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c index 10e71e55d21a..c32a4f53fa2a 100644 --- a/drivers/spi/spi-nxp-fspi.c +++ b/drivers/spi/spi-nxp-fspi.c @@ -537,12 +537,22 @@ static void nxp_fspi_prepare_lut(struct nxp_fspi *f, int lutidx = 1, i; /* cmd */ - lutval[0] |= LUT_DEF(0, LUT_CMD, LUT_PAD(op->cmd.buswidth), - op->cmd.opcode); + if (op->cmd.dtr) { + lutval[0] |= LUT_DEF(0, LUT_CMD_DDR, LUT_PAD(op->cmd.buswidth), + op->cmd.opcode >> 8); + lutval[lutidx / 2] |= LUT_DEF(lutidx, LUT_CMD_DDR, + LUT_PAD(op->cmd.buswidth), + op->cmd.opcode & 0x00ff); + lutidx++; + } else { + lutval[0] |= LUT_DEF(0, LUT_CMD, LUT_PAD(op->cmd.buswidth), + op->cmd.opcode); + } /* addr bytes */ if (op->addr.nbytes) { - lutval[lutidx / 2] |= LUT_DEF(lutidx, LUT_ADDR, + lutval[lutidx / 2] |= LUT_DEF(lutidx, op->addr.dtr ? + LUT_ADDR_DDR : LUT_ADDR, LUT_PAD(op->addr.buswidth), op->addr.nbytes * 8); lutidx++; @@ -550,7 +560,8 @@ static void nxp_fspi_prepare_lut(struct nxp_fspi *f, /* dummy bytes, if needed */ if (op->dummy.nbytes) { - lutval[lutidx / 2] |= LUT_DEF(lutidx, LUT_DUMMY, + lutval[lutidx / 2] |= LUT_DEF(lutidx, op->dummy.dtr ? + LUT_DUMMY_DDR : LUT_DUMMY, /* * Due to FlexSPI controller limitation number of PAD for dummy * buswidth needs to be programmed as equal to data buswidth. @@ -565,7 +576,8 @@ static void nxp_fspi_prepare_lut(struct nxp_fspi *f, if (op->data.nbytes) { lutval[lutidx / 2] |= LUT_DEF(lutidx, op->data.dir == SPI_MEM_DATA_IN ? - LUT_NXP_READ : LUT_NXP_WRITE, + (op->data.dtr ? LUT_READ_DDR : LUT_NXP_READ) : + (op->data.dtr ? LUT_WRITE_DDR : LUT_NXP_WRITE), LUT_PAD(op->data.buswidth), 0); lutidx++; @@ -1090,6 +1102,10 @@ static const struct spi_controller_mem_ops nxp_fspi_mem_ops = { .get_name = nxp_fspi_get_name, }; +static struct spi_controller_mem_caps nxp_fspi_mem_caps = { + .dtr = true, +}; + static int nxp_fspi_probe(struct platform_device *pdev) { struct spi_controller *ctlr; @@ -1194,6 +1210,7 @@ static int nxp_fspi_probe(struct platform_device *pdev) ctlr->bus_num = -1; ctlr->num_chipselect = NXP_FSPI_MAX_CHIPSELECT; ctlr->mem_ops = &nxp_fspi_mem_ops; + ctlr->mem_caps = &nxp_fspi_mem_caps; nxp_fspi_default_setup(f);