From patchwork Sun Jun 11 14:03:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 106107 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp2086335vqr; Sun, 11 Jun 2023 08:13:55 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ5/iGQoBnO/hXX6rRrqEwR6TJbGlGKzstS9W4ZUP217lFO/llK9X77GGMMUgvnaeSECOvCf X-Received: by 2002:a05:6a00:1826:b0:63b:854e:8459 with SMTP id y38-20020a056a00182600b0063b854e8459mr9344261pfa.31.1686496435513; Sun, 11 Jun 2023 08:13:55 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686496435; cv=none; d=google.com; s=arc-20160816; b=CJIVvexC37QQ2Z+RosyMqKb5EB/FPo7X0PiJQU+ulGfeOt7/ZLfl5IuPWij9b/TdaD MdA3mNmTSUR8cYn8o9i8nGjMfe6pMxvqhpF4n2L/aaluWiNIl0M9zBKKsBGGY0Zlmh1Z bJkhK7/pImCyrzo714mrFlG9RdK2u5+ZHXFNfBUoOemn86DywJSwSRX65y2s4YEJlV7S ww2+plVmyGy5I6rKh/rVYTvZ7yavEB3xwMY3L3U5UBqIuZA5AqqHwggV18/7s3UV8qPk RKYxpt+VwVF9IebZsi3h6ObVDazwa7NNdzH1yBQTWEw230sg+4MYA1LCNtXfUqJzTYhY FIxA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=kHzDZma34BfIceFW3Cdq8kZ/UQYKFOT8ltQbh1tX8Q4=; b=OMp9p/7JWPwrM6qQOvXXhEBCZOtLuIx4CjGjDIMFn3mvE1VWYAhFPsuBbupbSfkcIx OkeP6nBMKiGc1njA0eM+BgdCFEwTnWE0ElKXkx/W0lkNM7X5nFgvGmCzULOa96+uw5fX mvJ13Pa6MR0/eCT/UgNPlfgdPSyZPrL59C5ZnLJZdVpF33uj6zhonnjtSSephc5YqQ/4 BX6c5Nd9D6KHIHzoBQJOvcecqCiaKcMmscYZhuTR9IeVtF2Uv1LtX9/IXzq5RBLpLc0T k8/kNTBRqx/BKWtRI1Ej/iopRsS6GcwFdqynE4raOReso7fJIjFPYMvUmKXxPf+jnwbo nFkQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=UFoFBrFD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id t3-20020a63b703000000b00543eeb76c52si5598991pgf.756.2023.06.11.08.13.42; Sun, 11 Jun 2023 08:13:55 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=UFoFBrFD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234138AbjFKOGB (ORCPT + 99 others); Sun, 11 Jun 2023 10:06:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34742 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234223AbjFKOF0 (ORCPT ); Sun, 11 Jun 2023 10:05:26 -0400 Received: from mail-wr1-x42d.google.com (mail-wr1-x42d.google.com [IPv6:2a00:1450:4864:20::42d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B1033AB4 for ; Sun, 11 Jun 2023 07:04:27 -0700 (PDT) Received: by mail-wr1-x42d.google.com with SMTP id ffacd0b85a97d-30ae141785bso3190117f8f.3 for ; Sun, 11 Jun 2023 07:04:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1686492252; x=1689084252; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=kHzDZma34BfIceFW3Cdq8kZ/UQYKFOT8ltQbh1tX8Q4=; b=UFoFBrFDFp6l6vMBT7MPrIkKnwGOgNocRLb7R85KWQmc7N7TsUwbK5I45FXPi+y7KZ uHUh+z6cgOQPM57s8qAhaXq82BWLmSB+RUZOAQHDdZdTag5QISLB7U7Mgxe9GiqYIVlP TDE2CmwskbwXyX2fR0UBwBxo3kc+Gf6iNrxqAjYWn2c8UCGbkmAwdq7R4s2exBw7tD0f IeX0pPdAbq0+MjWx0AwA8WaqiR/iBBLMdw/Sr/zqvc5fNBdI7/uc+Bj1eSGclg86NkYQ omCt89WMxUUqPPsiU5TSV5QWHQZRQfTRmSavv5bkPjgZYohLi7ChxLcBz6JN9G7z80X1 2ezw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686492252; x=1689084252; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=kHzDZma34BfIceFW3Cdq8kZ/UQYKFOT8ltQbh1tX8Q4=; b=BiEyBGgnK2tkJT4iF2oYTDEuIabzz5xTe4xbvCrUOdKxh49sDmHA+S9M03V80FNwha eo2Y/KRF2x8+pyiZ+9d5/2o1ZjLT6LRkN4PJnssJrTyfseiG44SUjdMcNYOuITHmaFJ/ FgN3ebDsIVo3hE6e/psi5MCbk3pWETkWS3UvIQCSwudmzYAr0tcmirKgb2JhTKg4qYOY HkU0vsjCQ1aZqnZKWsKS5uu+2ecATWvdLioFOk7j6Z1OPLCpsn06Cz2MkUzPQLLLGkCg FQwOW3EYW6WMYekdIn1LAfXmgqpoOwBRgjmAgZywMYlu6CszdstFGiLueGKxKTixoRDA IZcg== X-Gm-Message-State: AC+VfDzbf5EptrBFE+nIJsuDyO3RCQ+maizV3vu7OEZF+1vpR1v8JLtp /lLM/odaBHJPhRHk5iLAZR2Dlg== X-Received: by 2002:adf:d08e:0:b0:30f:c195:2176 with SMTP id y14-20020adfd08e000000b0030fc1952176mr313623wrh.59.1686492252319; Sun, 11 Jun 2023 07:04:12 -0700 (PDT) Received: from localhost.localdomain ([5.133.47.210]) by smtp.gmail.com with ESMTPSA id h17-20020a05600c28d100b003f080b2f9f4sm8567222wmd.27.2023.06.11.07.04.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 11 Jun 2023 07:04:11 -0700 (PDT) From: Srinivas Kandagatla To: gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, Peng Fan , Srinivas Kandagatla Subject: [PATCH 21/26] nvmem: imx: support i.MX93 OCOTP Date: Sun, 11 Jun 2023 15:03:25 +0100 Message-Id: <20230611140330.154222-22-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230611140330.154222-1-srinivas.kandagatla@linaro.org> References: <20230611140330.154222-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768419686134323005?= X-GMAIL-MSGID: =?utf-8?q?1768419686134323005?= From: Peng Fan Add i.MX93 OCOTP support. i.MX93 OCOTP has two parts: Fuse shadow block(fsb) and fuse managed by ELE. The FSB part could be directly accessed with MMIO, the ELE could only be accessed with ELE API. Currently the ELE API is not ready, so NULL function callback is used, but it was tested with downstream ELE API. Signed-off-by: Peng Fan Signed-off-by: Srinivas Kandagatla --- drivers/nvmem/Kconfig | 9 ++ drivers/nvmem/Makefile | 2 + drivers/nvmem/imx-ocotp-ele.c | 175 ++++++++++++++++++++++++++++++++++ 3 files changed, 186 insertions(+) create mode 100644 drivers/nvmem/imx-ocotp-ele.c diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index 688b70ba4826..da9befa3d6c4 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -83,6 +83,15 @@ config NVMEM_IMX_OCOTP This driver can also be built as a module. If so, the module will be called nvmem-imx-ocotp. +config NVMEM_IMX_OCOTP_ELE + tristate "i.MX On-Chip OTP Controller support" + depends on ARCH_MXC || COMPILE_TEST + depends on HAS_IOMEM + depends on OF + help + This is a driver for the On-Chip OTP Controller (OCOTP) + available on i.MX SoCs which has ELE. + config NVMEM_IMX_OCOTP_SCU tristate "i.MX8 SCU On-Chip OTP Controller support" depends on IMX_SCU diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile index f82431ec8aef..cc23ce4ffb1f 100644 --- a/drivers/nvmem/Makefile +++ b/drivers/nvmem/Makefile @@ -18,6 +18,8 @@ obj-$(CONFIG_NVMEM_IMX_IIM) += nvmem-imx-iim.o nvmem-imx-iim-y := imx-iim.o obj-$(CONFIG_NVMEM_IMX_OCOTP) += nvmem-imx-ocotp.o nvmem-imx-ocotp-y := imx-ocotp.o +obj-$(CONFIG_NVMEM_IMX_OCOTP_ELE) += nvmem-imx-ocotp-ele.o +nvmem-imx-ocotp-ele-y := imx-ocotp-ele.o obj-$(CONFIG_NVMEM_IMX_OCOTP_SCU) += nvmem-imx-ocotp-scu.o nvmem-imx-ocotp-scu-y := imx-ocotp-scu.o obj-$(CONFIG_NVMEM_JZ4780_EFUSE) += nvmem_jz4780_efuse.o diff --git a/drivers/nvmem/imx-ocotp-ele.c b/drivers/nvmem/imx-ocotp-ele.c new file mode 100644 index 000000000000..f1cbbc9afeb8 --- /dev/null +++ b/drivers/nvmem/imx-ocotp-ele.c @@ -0,0 +1,175 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * i.MX9 OCOTP fusebox driver + * + * Copyright 2023 NXP + */ + +#include +#include +#include +#include +#include +#include +#include + +enum fuse_type { + FUSE_FSB = 1, + FUSE_ELE = 2, + FUSE_INVALID = -1 +}; + +struct ocotp_map_entry { + u32 start; /* start word */ + u32 num; /* num words */ + enum fuse_type type; +}; + +struct ocotp_devtype_data { + u32 reg_off; + char *name; + u32 size; + u32 num_entry; + u32 flag; + nvmem_reg_read_t reg_read; + struct ocotp_map_entry entry[]; +}; + +struct imx_ocotp_priv { + struct device *dev; + void __iomem *base; + struct nvmem_config config; + struct mutex lock; + const struct ocotp_devtype_data *data; +}; + +static enum fuse_type imx_ocotp_fuse_type(void *context, u32 index) +{ + struct imx_ocotp_priv *priv = context; + const struct ocotp_devtype_data *data = priv->data; + u32 start, end; + int i; + + for (i = 0; i < data->num_entry; i++) { + start = data->entry[i].start; + end = data->entry[i].start + data->entry[i].num; + + if (index >= start && index < end) + return data->entry[i].type; + } + + return FUSE_INVALID; +} + +static int imx_ocotp_reg_read(void *context, unsigned int offset, void *val, size_t bytes) +{ + struct imx_ocotp_priv *priv = context; + void __iomem *reg = priv->base + priv->data->reg_off; + u32 count, index, num_bytes; + enum fuse_type type; + u32 *buf; + void *p; + int i; + + index = offset; + num_bytes = round_up(bytes, 4); + count = num_bytes >> 2; + + if (count > ((priv->data->size >> 2) - index)) + count = (priv->data->size >> 2) - index; + + p = kzalloc(num_bytes, GFP_KERNEL); + if (!p) + return -ENOMEM; + + mutex_lock(&priv->lock); + + buf = p; + + for (i = index; i < (index + count); i++) { + type = imx_ocotp_fuse_type(context, i); + if (type == FUSE_INVALID || type == FUSE_ELE) { + *buf++ = 0; + continue; + } + + *buf++ = readl_relaxed(reg + (i << 2)); + } + + memcpy(val, (u8 *)p, bytes); + + mutex_unlock(&priv->lock); + + kfree(p); + + return 0; +}; + +static int imx_ele_ocotp_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct imx_ocotp_priv *priv; + struct nvmem_device *nvmem; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->data = of_device_get_match_data(dev); + + priv->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->base)) + return PTR_ERR(priv->base); + + priv->config.dev = dev; + priv->config.name = "ELE-OCOTP"; + priv->config.id = NVMEM_DEVID_AUTO; + priv->config.owner = THIS_MODULE; + priv->config.size = priv->data->size; + priv->config.reg_read = priv->data->reg_read; + priv->config.word_size = 4; + priv->config.stride = 1; + priv->config.priv = priv; + priv->config.read_only = true; + mutex_init(&priv->lock); + + nvmem = devm_nvmem_register(dev, &priv->config); + if (IS_ERR(nvmem)) + return PTR_ERR(nvmem); + + return 0; +} + +static const struct ocotp_devtype_data imx93_ocotp_data = { + .reg_off = 0x8000, + .reg_read = imx_ocotp_reg_read, + .size = 2048, + .num_entry = 6, + .entry = { + { 0, 52, FUSE_FSB }, + { 63, 1, FUSE_ELE}, + { 128, 16, FUSE_ELE }, + { 182, 1, FUSE_ELE }, + { 188, 1, FUSE_ELE }, + { 312, 200, FUSE_FSB } + }, +}; + +static const struct of_device_id imx_ele_ocotp_dt_ids[] = { + { .compatible = "fsl,imx93-ocotp", .data = &imx93_ocotp_data, }, + {}, +}; +MODULE_DEVICE_TABLE(of, imx_ele_ocotp_dt_ids); + +static struct platform_driver imx_ele_ocotp_driver = { + .driver = { + .name = "imx_ele_ocotp", + .of_match_table = imx_ele_ocotp_dt_ids, + }, + .probe = imx_ele_ocotp_probe, +}; +module_platform_driver(imx_ele_ocotp_driver); + +MODULE_DESCRIPTION("i.MX OCOTP/ELE driver"); +MODULE_AUTHOR("Peng Fan "); +MODULE_LICENSE("GPL");