From patchwork Fri Sep 18 08:31:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ikjoon Jang X-Patchwork-Id: 11784345 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E4391746 for ; Fri, 18 Sep 2020 08:35:09 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A658A20789 for ; Fri, 18 Sep 2020 08:35:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="PIHm1cKF"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="RLCsRbGE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A658A20789 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=m22hDdt4nfIylzjxzNYUrs8kuuAXsQC8FAuFk0NPEXI=; b=PIHm1cKFN5JvGVM2iEl7s/qXX wg3vtiBEfx3JTOk87D2nn7rkj+/i29ODNfqaGgGfpK75wps9chrHir39/srF01mMVmqkbIwxYMPtf 9Y0jHGc0t+cpTwioYhreaDkx6t4Ozvz4SJ7NwrHzAOqlzCigDIKjcQrRhtjZfNKI2w+oqWTLKutU7 Orm6EpAjYgg4mGXFP8LI0hZFpGK4lr0j/85rmq2Wtnc4yfCzUJQ7gfddTrjdYvVRC35T19/zFGRYp XNvn0DWQZznS0c2X5bwPgKJNWXofyxnDJlbhDRiQiCCL/jVsO8xixSfH12n6AuYvkMORWu2IxMZoD ImPPeS4VA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kJBpT-0000X4-GN; Fri, 18 Sep 2020 08:33:15 +0000 Received: from mail-pj1-x1042.google.com ([2607:f8b0:4864:20::1042]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kJBny-0008GU-Sz for linux-arm-kernel@lists.infradead.org; Fri, 18 Sep 2020 08:31:50 +0000 Received: by mail-pj1-x1042.google.com with SMTP id md22so3992677pjb.0 for ; Fri, 18 Sep 2020 01:31:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=V6QA5rlwQIgAumyCtY/vC8OZHPGW9fkvmobEZ61e3iw=; b=RLCsRbGEIvBCMUuhsoukaG9neeZlgVgZbHJD1ivveD5GumnlluwtLd2WdZ/jIC/XVi OVDwap9KXfLe1ucenLJ2xRDya+7cBCILx/fCyOEwcmdCfmTxCKCmDmCrU93XhmBaJmfn QGkSidPS6H6/ySwK04ULnFvBcvusmSA0Vbsog= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=V6QA5rlwQIgAumyCtY/vC8OZHPGW9fkvmobEZ61e3iw=; b=IhHplNKuFV7g0YD0bkFfKDHzPK5T+l4S8mMaDhXwt85qOvAzj9mvP3sz18i1G2njeJ XpG8bNgmYDIrIOJ0w3muNPGwNuIM8FUucJ72phkKTTIEKP/cHuyOTQnH8XLsqe+cXEcR EoLdEy4uEa1uXn2/rG4t3attMqTq67XriFnHLXsGSn2eg3jlCZo87kMa/1y3pYg5vbiH 5L+HjUqskJ6s/nvw6B65oU2a9Y6zjcJr1MhHJKDRI83NaNX4Wl7dOTuOnYz1wwsANC2l 1J9IM1NinBkjhbFjThSgo2+TSSukMUTyILdYpLbHFWLf5KJj0QlIZPjlU8wJ2LIhszZa WWEg== X-Gm-Message-State: AOAM533/0cQr2behX3z+n6pL37a1PlFUiaCzVAYA1OeCHssdKjMJfa5D XDLWPFP/Z2aOgd5pfUcATBLDsw== X-Google-Smtp-Source: ABdhPJygqgBey434xgCtbPNom+Nm5OBIq9zcYixgGAlrzs7AOfK44AeJ1z3uv1szI1z/iQNJZqhoBQ== X-Received: by 2002:a17:90b:1642:: with SMTP id il2mr11671416pjb.93.1600417900741; Fri, 18 Sep 2020 01:31:40 -0700 (PDT) Received: from ikjn-p920.tpe.corp.google.com ([2401:fa00:1:10:f693:9fff:fef4:a8fc]) by smtp.gmail.com with ESMTPSA id g206sm2193172pfb.178.2020.09.18.01.31.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Sep 2020 01:31:40 -0700 (PDT) From: Ikjoon Jang To: Rob Herring , Mark Brown , devicetree@vger.kernel.org, linux-spi@vger.kernel.org, linux-mtd@lists.infradead.org Subject: [PATCH v2 4/5] spi: spi-mtk-nor: support 36bit dma addressing to mediatek Date: Fri, 18 Sep 2020 16:31:22 +0800 Message-Id: <20200918162834.v2.4.Id1cb208392928afc7ceed4de06924243c7858cd0@changeid> X-Mailer: git-send-email 2.28.0.681.g6f77f65b4e-goog In-Reply-To: <20200918083124.3921207-1-ikjn@chromium.org> References: <20200918083124.3921207-1-ikjn@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200918_043143_248143_31E9FC03 X-CRM114-Status: GOOD ( 18.01 ) X-Spam-Score: -3.2 (---) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-3.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:1042 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -3.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Matthias Brugger , linux-mediatek@lists.infradead.org, Ikjoon Jang , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch enables 36bit dma address support to spi-mtk-nor. Currently 36bit dma addressing is enabled only for mt8192-nor. Signed-off-by: Ikjoon Jang --- (no changes since v1) drivers/spi/spi-mtk-nor.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-mtk-nor.c b/drivers/spi/spi-mtk-nor.c index e14798a6e7d0..99dd5dca744e 100644 --- a/drivers/spi/spi-mtk-nor.c +++ b/drivers/spi/spi-mtk-nor.c @@ -78,6 +78,8 @@ #define MTK_NOR_REG_DMA_FADR 0x71c #define MTK_NOR_REG_DMA_DADR 0x720 #define MTK_NOR_REG_DMA_END_DADR 0x724 +#define MTK_NOR_REG_DMA_DADR_HB 0x738 +#define MTK_NOR_REG_DMA_END_DADR_HB 0x73c #define MTK_NOR_PRG_MAX_SIZE 6 // Reading DMA src/dst addresses have to be 16-byte aligned @@ -102,6 +104,7 @@ struct mtk_nor { unsigned int spi_freq; bool wbuf_en; bool has_irq; + bool high_dma; struct completion op_done; }; @@ -291,6 +294,11 @@ static int read_dma(struct mtk_nor *sp, u32 from, unsigned int length, writel(dma_addr, sp->base + MTK_NOR_REG_DMA_DADR); writel(dma_addr + length, sp->base + MTK_NOR_REG_DMA_END_DADR); + if (sp->high_dma) { + writel(dma_addr >> 32, sp->base + MTK_NOR_REG_DMA_DADR_HB); + writel((dma_addr + length) >> 32, sp->base + MTK_NOR_REG_DMA_END_DADR_HB); + } + if (sp->has_irq) { reinit_completion(&sp->op_done); mtk_nor_rmw(sp, MTK_NOR_REG_IRQ_EN, MTK_NOR_IRQ_DMA, 0); @@ -594,7 +602,8 @@ static const struct spi_controller_mem_ops mtk_nor_mem_ops = { }; static const struct of_device_id mtk_nor_match[] = { - { .compatible = "mediatek,mt8173-nor" }, + { .compatible = "mediatek,mt8192-nor", .data = (void *)36 }, + { .compatible = "mediatek,mt8173-nor", .data = (void *)32 }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, mtk_nor_match); @@ -607,6 +616,7 @@ static int mtk_nor_probe(struct platform_device *pdev) u8 *buffer; struct clk *spi_clk, *ctlr_clk; int ret, irq; + unsigned long dma_bits; base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) @@ -623,6 +633,13 @@ static int mtk_nor_probe(struct platform_device *pdev) buffer = devm_kmalloc(&pdev->dev, MTK_NOR_BOUNCE_BUF_SIZE + MTK_NOR_DMA_ALIGN, GFP_KERNEL); + + dma_bits = (unsigned long)of_device_get_match_data(&pdev->dev); + if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_bits))) { + dev_err(&pdev->dev, "failed to set dma mask(%lu)\n", dma_bits); + return -EINVAL; + } + if (!buffer) return -ENOMEM;