From patchwork Thu Nov 26 08:57:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 11933063 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62218C64E7D for ; Thu, 26 Nov 2020 08:57:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0AEA020B1F for ; Thu, 26 Nov 2020 08:57:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="qBoSv6AW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389095AbgKZI5b (ORCPT ); Thu, 26 Nov 2020 03:57:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42686 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389092AbgKZI5a (ORCPT ); Thu, 26 Nov 2020 03:57:30 -0500 Received: from mail-pl1-x643.google.com (mail-pl1-x643.google.com [IPv6:2607:f8b0:4864:20::643]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC3C1C0613D4 for ; Thu, 26 Nov 2020 00:57:30 -0800 (PST) Received: by mail-pl1-x643.google.com with SMTP id t18so840888plo.0 for ; Thu, 26 Nov 2020 00:57:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=a81+k4ur4QT2egD08jEqcvgRsZrgAwocvEo+BKS2QZE=; b=qBoSv6AWPA1w08TAKgHzO0Ifk6sSdeUK3eV1/yWnMIDlzxxhZTeDbdTpA4+a2+72eO 357iy4LCFHgnDStriOE89S5PhioE1edQp2xXewzWty/+WPpgMXqyXDah3rzw0jN1+Y09 B2C1NOzb6hOC3KWC4rXPv7K2gjZfa6YxgxKBq2jDIQZnzR6ZL0tpH6P+ch/BmTZ/YfvD cpgAtEc8wBi7JQaJBLKrKPpeD36qOA7u0KpHiCvvZg+sO0dHbN59IxjVUdKMU6wb8EvI PLQFOZrZCyKhTSZ8XypkBDtKEIBMxh03p8vyMiedcpeQLaIR9RUjb+Ei9XAYxco4dVJl tLhg== 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=a81+k4ur4QT2egD08jEqcvgRsZrgAwocvEo+BKS2QZE=; b=bx+3cMrP/4j5eB/gQDx/VuHUL4bSgZ1TxuYmG6wTINa3V/Ke+gzvVsG/SZj7Q/FKGC LXxGoOjqHDc9bdbJz0amxax7XPp97ppSv5PA2unbIjJJ5s5O1zdZ9SCE+AsFsw/gpFj4 HQlsSTMnqppyox5TGSw5Zn9+Vh4oxW5D1JtPgTzf3vA+7CFXE1nOUxxO46NLijwYlthB 35jGKd9Ls2tP3l8yV+v4WjVYFxc6aT1Q9u1iaODrTj5szdRPMnegspHSRJLzKrXeipB3 zYPd/SjtOMrMMynBW66Wi97QZgBQEICGijVy1bym0m/aQzFkrbPtzd13TAz1hE03RdFg n5Zg== X-Gm-Message-State: AOAM531xAkJJCnQvNIJpGKDYX1dUs1iOTeDRBtdzYg22jJKnuV1LgyJb IG2Rz902V9Mt6yIiz7gQc0SQ X-Google-Smtp-Source: ABdhPJxpZgOreFw1Go0GGyKcw6aDn1c2CnXLPrMd+LnLD0xwAQf69HuxyAJWvIkSiIiY9URRcKb7fA== X-Received: by 2002:a17:902:900a:b029:d7:d966:1a44 with SMTP id a10-20020a170902900ab02900d7d9661a44mr1984646plp.8.1606381050172; Thu, 26 Nov 2020 00:57:30 -0800 (PST) Received: from localhost.localdomain ([2409:4072:6e95:f2a:3996:9d7f:e389:7f7d]) by smtp.gmail.com with ESMTPSA id e29sm4025603pgl.58.2020.11.26.00.57.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Nov 2020 00:57:29 -0800 (PST) From: Manivannan Sadhasivam To: miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, robh+dt@kernel.org Cc: bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sivaprak@codeaurora.org, Manivannan Sadhasivam Subject: [PATCH 2/2] mtd: rawnand: qcom: Add NAND controller support for SDX55 Date: Thu, 26 Nov 2020 14:27:05 +0530 Message-Id: <20201126085705.48399-3-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201126085705.48399-1-manivannan.sadhasivam@linaro.org> References: <20201126085705.48399-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org SDX55 uses QPIC version 2.0.0 IP for the NAND controller support. In this version, DEV_CMD_* registers are moved to operational state, hence CPU access in BAM mode is restricted. So, skip accessing these registers and also use a different config for reading ONFI parameters. Signed-off-by: Manivannan Sadhasivam --- drivers/mtd/nand/raw/qcom_nandc.c | 68 +++++++++++++++++++++++-------- 1 file changed, 51 insertions(+), 17 deletions(-) diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c index 777fb0de0680..c7e243dc9b2c 100644 --- a/drivers/mtd/nand/raw/qcom_nandc.c +++ b/drivers/mtd/nand/raw/qcom_nandc.c @@ -145,6 +145,7 @@ #define OP_PAGE_READ 0x2 #define OP_PAGE_READ_WITH_ECC 0x3 #define OP_PAGE_READ_WITH_ECC_SPARE 0x4 +#define OP_PAGE_READ_ONFI_READ 0x5 #define OP_PROGRAM_PAGE 0x6 #define OP_PAGE_PROGRAM_WITH_ECC 0x7 #define OP_PROGRAM_PAGE_SPARE 0x9 @@ -460,12 +461,14 @@ struct qcom_nand_host { * @ecc_modes - ecc mode for NAND * @is_bam - whether NAND controller is using BAM * @is_qpic - whether NAND CTRL is part of qpic IP + * @qpic_v2 - flag to indicate QPIC IP version 2 * @dev_cmd_reg_start - NAND_DEV_CMD_* registers starting offset */ struct qcom_nandc_props { u32 ecc_modes; bool is_bam; bool is_qpic; + bool qpic_v2; u32 dev_cmd_reg_start; }; @@ -1164,7 +1167,13 @@ static int nandc_param(struct qcom_nand_host *host) * in use. we configure the controller to perform a raw read of 512 * bytes to read onfi params */ - nandc_set_reg(nandc, NAND_FLASH_CMD, OP_PAGE_READ | PAGE_ACC | LAST_PAGE); + if (nandc->props->qpic_v2) + nandc_set_reg(nandc, NAND_FLASH_CMD, OP_PAGE_READ_ONFI_READ | + PAGE_ACC | LAST_PAGE); + else + nandc_set_reg(nandc, NAND_FLASH_CMD, OP_PAGE_READ | + PAGE_ACC | LAST_PAGE); + nandc_set_reg(nandc, NAND_ADDR0, 0); nandc_set_reg(nandc, NAND_ADDR1, 0); nandc_set_reg(nandc, NAND_DEV0_CFG0, 0 << CW_PER_PAGE @@ -1180,21 +1189,28 @@ static int nandc_param(struct qcom_nand_host *host) | 1 << DEV0_CFG1_ECC_DISABLE); nandc_set_reg(nandc, NAND_EBI2_ECC_BUF_CFG, 1 << ECC_CFG_ECC_DISABLE); - /* configure CMD1 and VLD for ONFI param probing */ - nandc_set_reg(nandc, NAND_DEV_CMD_VLD, - (nandc->vld & ~READ_START_VLD)); - nandc_set_reg(nandc, NAND_DEV_CMD1, - (nandc->cmd1 & ~(0xFF << READ_ADDR)) - | NAND_CMD_PARAM << READ_ADDR); + /* configure CMD1 and VLD for ONFI param probing in QPIC v1 */ + if (!nandc->props->qpic_v2) { + nandc_set_reg(nandc, NAND_DEV_CMD_VLD, + (nandc->vld & ~READ_START_VLD)); + nandc_set_reg(nandc, NAND_DEV_CMD1, + (nandc->cmd1 & ~(0xFF << READ_ADDR)) + | NAND_CMD_PARAM << READ_ADDR); + } nandc_set_reg(nandc, NAND_EXEC_CMD, 1); - nandc_set_reg(nandc, NAND_DEV_CMD1_RESTORE, nandc->cmd1); - nandc_set_reg(nandc, NAND_DEV_CMD_VLD_RESTORE, nandc->vld); + if (!nandc->props->qpic_v2) { + nandc_set_reg(nandc, NAND_DEV_CMD1_RESTORE, nandc->cmd1); + nandc_set_reg(nandc, NAND_DEV_CMD_VLD_RESTORE, nandc->vld); + } + nandc_set_read_loc(nandc, 0, 0, 512, 1); - write_reg_dma(nandc, NAND_DEV_CMD_VLD, 1, 0); - write_reg_dma(nandc, NAND_DEV_CMD1, 1, NAND_BAM_NEXT_SGL); + if (!nandc->props->qpic_v2) { + write_reg_dma(nandc, NAND_DEV_CMD_VLD, 1, 0); + write_reg_dma(nandc, NAND_DEV_CMD1, 1, NAND_BAM_NEXT_SGL); + } nandc->buf_count = 512; memset(nandc->data_buffer, 0xff, nandc->buf_count); @@ -1205,8 +1221,10 @@ static int nandc_param(struct qcom_nand_host *host) nandc->buf_count, 0); /* restore CMD1 and VLD regs */ - write_reg_dma(nandc, NAND_DEV_CMD1_RESTORE, 1, 0); - write_reg_dma(nandc, NAND_DEV_CMD_VLD_RESTORE, 1, NAND_BAM_NEXT_SGL); + if (!nandc->props->qpic_v2) { + write_reg_dma(nandc, NAND_DEV_CMD1_RESTORE, 1, 0); + write_reg_dma(nandc, NAND_DEV_CMD_VLD_RESTORE, 1, NAND_BAM_NEXT_SGL); + } return 0; } @@ -2770,8 +2788,10 @@ static int qcom_nandc_setup(struct qcom_nand_controller *nandc) /* kill onenand */ if (!nandc->props->is_qpic) nandc_write(nandc, SFLASHC_BURST_CFG, 0); - nandc_write(nandc, dev_cmd_reg_addr(nandc, NAND_DEV_CMD_VLD), - NAND_DEV_CMD_VLD_VAL); + + if (!nandc->props->qpic_v2) + nandc_write(nandc, dev_cmd_reg_addr(nandc, NAND_DEV_CMD_VLD), + NAND_DEV_CMD_VLD_VAL); /* enable ADM or BAM DMA */ if (nandc->props->is_bam) { @@ -2791,8 +2811,10 @@ static int qcom_nandc_setup(struct qcom_nand_controller *nandc) } /* save the original values of these registers */ - nandc->cmd1 = nandc_read(nandc, dev_cmd_reg_addr(nandc, NAND_DEV_CMD1)); - nandc->vld = NAND_DEV_CMD_VLD_VAL; + if (!nandc->props->qpic_v2) { + nandc->cmd1 = nandc_read(nandc, dev_cmd_reg_addr(nandc, NAND_DEV_CMD1)); + nandc->vld = NAND_DEV_CMD_VLD_VAL; + } return 0; } @@ -3050,6 +3072,14 @@ static const struct qcom_nandc_props ipq8074_nandc_props = { .dev_cmd_reg_start = 0x7000, }; +static const struct qcom_nandc_props sdx55_nandc_props = { + .ecc_modes = (ECC_BCH_4BIT | ECC_BCH_8BIT), + .is_bam = true, + .is_qpic = true, + .qpic_v2 = true, + .dev_cmd_reg_start = 0x7000, +}; + /* * data will hold a struct pointer containing more differences once we support * more controller variants @@ -3067,6 +3097,10 @@ static const struct of_device_id qcom_nandc_of_match[] = { .compatible = "qcom,ipq8074-nand", .data = &ipq8074_nandc_props, }, + { + .compatible = "qcom,sdx55-nand", + .data = &sdx55_nandc_props, + }, {} }; MODULE_DEVICE_TABLE(of, qcom_nandc_of_match);