From patchwork Wed Jan 4 16:18:10 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 89875 Delivered-To: patch@linaro.org Received: by 10.140.20.101 with SMTP id 92csp8560585qgi; Wed, 4 Jan 2017 08:18:48 -0800 (PST) X-Received: by 10.98.54.68 with SMTP id d65mr62940430pfa.61.1483546727469; Wed, 04 Jan 2017 08:18:47 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id j68si72843930pfj.291.2017.01.04.08.18.47; Wed, 04 Jan 2017 08:18:47 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031491AbdADQSg (ORCPT + 25 others); Wed, 4 Jan 2017 11:18:36 -0500 Received: from mail-wm0-f48.google.com ([74.125.82.48]:37940 "EHLO mail-wm0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S968618AbdADQSb (ORCPT ); Wed, 4 Jan 2017 11:18:31 -0500 Received: by mail-wm0-f48.google.com with SMTP id k184so265116773wme.1 for ; Wed, 04 Jan 2017 08:18:30 -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; bh=pLfCMWr9F38TGnVQJhjXUlXXRRJ/evVG/xVMEq1JcoQ=; b=UX4OORVDlf1vQ4EXg5qoUIjrGKF9Mi6+79qVEXVmcFtErlnx1ksDqcOFKKIAFr6sXv 8jVYVZhyhe3cRFz/XgRdSwz5awWhwGMUz399Q/+g1wu6KRmLSjn/tCKCgyr45iAc7aQE w5++CLdww/8EYUF+TcPm3fsHFG3aprMZIEyuI= 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; bh=pLfCMWr9F38TGnVQJhjXUlXXRRJ/evVG/xVMEq1JcoQ=; b=gyqibVxA43DINH1b+oqyIblvp9NkEG8nWjvs9gffY2IqTu7wDQ1bkV5EXChi/hhBCO RKKsZglSjgHS/++fEnxfPkjp8DU2kB2MDKhg8yMsVtSAbGX1CPjP1G4aPRpLMAnmZh7k r8FgfZsqQhsFGp0E6xK26C7ejc+yD/2jIKOHqyXOg1fBzaBNZEQ3NC4ai2VuYZ6NID7d 80bEeMw27ds1+uPEMCDW50iRV4wKN7gBqXGnKmGuLZ1fxlOsnA34zmNI5XJs9/0vpvbS irOyilq87gI1wlqKS0/kE0IlzfRM6lXDTUSt3DnW+23D7ETIkUJgoNnXgVH/K3FESuPh /Gzw== X-Gm-Message-State: AIkVDXJHGmiIVRnNLp2Dsiw4aG11NIWXkFYgSZq/Pjv//5vF3x6WrqEU0uH+dvdt2wyJmWdU X-Received: by 10.28.214.133 with SMTP id n127mr64311617wmg.28.1483546709832; Wed, 04 Jan 2017 08:18:29 -0800 (PST) Received: from localhost.localdomain (host-2-98-102-117.as13285.net. [2.98.102.117]) by smtp.gmail.com with ESMTPSA id w79sm95641291wmw.0.2017.01.04.08.18.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 04 Jan 2017 08:18:29 -0800 (PST) From: Srinivas Kandagatla To: gregkh@linuxfoundation.org Cc: Maxime Ripard , linux-kernel@vger.kernel.org, srinivas.kandagatla@linaro.org, Daniel Schultz Subject: [PATCH 2/3] nvmem: imx-ocotp: Fix wrong register size Date: Wed, 4 Jan 2017 16:18:10 +0000 Message-Id: <1483546691-24099-3-git-send-email-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1483546691-24099-1-git-send-email-srinivas.kandagatla@linaro.org> References: <1483546691-24099-1-git-send-email-srinivas.kandagatla@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Daniel Schultz All i.MX6 SoCs have an OCOTP Controller with 4kbit fuses. The i.MX6SL is an exception and has only 2kbit fuses. In the TRM for the i.MX6DQ (IMX6QDRM - Rev 2, 06/2014) the fuses size is described in chapter 46.1.1 with: "32-bit word restricted program and read to 4Kbits of eFuse OTP(512x8)." In the TRM for the i.MX6SL (IMX6SLRM - Rev 2, 06/2015) the fuses size is described in chapter 34.1.1 with: "32-bit word restricted program and read to 2 kbit of eFuse OTP(128x8)." Since the Freescale Linux kernel OCOTP driver works with a fuses size of 2 kbit for the i.MX6SL, it looks like the TRM is wrong and the formula to calculate the correct fuses size has to be 256x8. Signed-off-by: Daniel Schultz Signed-off-by: Srinivas Kandagatla --- drivers/nvmem/imx-ocotp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.7.4 diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c index ac27b9b..8e7b120 100644 --- a/drivers/nvmem/imx-ocotp.c +++ b/drivers/nvmem/imx-ocotp.c @@ -71,7 +71,7 @@ static struct nvmem_config imx_ocotp_nvmem_config = { static const struct of_device_id imx_ocotp_dt_ids[] = { { .compatible = "fsl,imx6q-ocotp", (void *)128 }, - { .compatible = "fsl,imx6sl-ocotp", (void *)32 }, + { .compatible = "fsl,imx6sl-ocotp", (void *)64 }, { .compatible = "fsl,imx6sx-ocotp", (void *)128 }, { }, };