From mboxrd@z Thu Jan 1 00:00:00 1970 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=-7.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 B236FC47420 for ; Tue, 29 Sep 2020 20:58:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 45BF720757 for ; Tue, 29 Sep 2020 20:58:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="RyBeF2Lo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729391AbgI2U6S (ORCPT ); Tue, 29 Sep 2020 16:58:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729127AbgI2U6R (ORCPT ); Tue, 29 Sep 2020 16:58:17 -0400 Received: from mail-pj1-x1044.google.com (mail-pj1-x1044.google.com [IPv6:2607:f8b0:4864:20::1044]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 26E12C061755 for ; Tue, 29 Sep 2020 13:58:17 -0700 (PDT) Received: by mail-pj1-x1044.google.com with SMTP id t7so3408178pjd.3 for ; Tue, 29 Sep 2020 13:58:17 -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:mime-version :content-transfer-encoding; bh=G3+N8jl4iLhxEDGW7b+2sUqmEtHRJsrmsOkpbsCci28=; b=RyBeF2LoJWmFx7cRTA0dxIqnOk43j8IDnZQNiKh1SxagTLajEc0seLhggi5jGNwyW8 TQieKx9sVRWYYBlg9ZTWqVF9GjUMTSMzvBgAuB04mS5kOVDgLfLTVwkZgN1ci6I/0+g/ ljpiR2ljIgE9OyOcGZzzg1Z0cU5Im372vb1CY= 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:mime-version :content-transfer-encoding; bh=G3+N8jl4iLhxEDGW7b+2sUqmEtHRJsrmsOkpbsCci28=; b=unmoba6SjrCoL3RUzbTDz1tRhPpCqU7xLUc2RkShTqMoz84I0TPMfphh0Ncx4kLzMu vj84l0DIHKnrcKx7KWKQ+LKTQzQhrqIh+s6njcdfFvzBXYhAkB6+IcPaFlogMiNSh7mT 8Wm2mr1S2ycWM3shqNKwRqOGrGjHAVlqA74Sbsp3nAHUa9ep5GxE5x/YniRr2SUNKDzJ L8N0UHPhWm1v/zgyjd4xsGths79hIFzVLHoS/D/uexvlJ4ceX8ByiZZ4zVCHaJiQv0o9 SpJfniNBzVgaio+95DYoki1PBXl6olIMFF8ASOuyKf79brKOOiJhRVjEJueeD7wyBfYv cowg== X-Gm-Message-State: AOAM531Kr9zygtFmvYKQMsGraPbZvc169cl2vZx4stncjRa7A/eG6rd8 zgNl8SCIDx8ydJSToHbDbFcLgg== X-Google-Smtp-Source: ABdhPJyE/U1qwuzZg0kpvNJ18xK9ziz4FHxSxLVdwTW8gnEeYDBH1AMEUSknlOcfpPoDDQV5l8dW5A== X-Received: by 2002:a17:90a:2d87:: with SMTP id p7mr3619978pjd.179.1601413096753; Tue, 29 Sep 2020 13:58:16 -0700 (PDT) Received: from evgreen-glaptop.cheshire.ch ([2601:646:c780:1404:a2ce:c8ff:fec4:54a3]) by smtp.gmail.com with ESMTPSA id k7sm5488101pjs.9.2020.09.29.13.58.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 29 Sep 2020 13:58:16 -0700 (PDT) From: Evan Green To: Rob Herring , Bjorn Andersson , Srinivas Kandagatla Cc: Douglas Anderson , Stephen Boyd , Evan Green , Andy Gross , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/3] nvmem: qfprom: Avoid untouchable regions Date: Tue, 29 Sep 2020 13:58:04 -0700 Message-Id: <20200929205807.2360405-1-evgreen@chromium.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Certain fuses are protected by the XPU such that the AP cannot access them. Attempting to do so causes an SError. Introduce an SoC-specific compatible string, and then use that to determine which fuse regions to present as Read as Zero / Write Ignore. Evan Green (3): dt-bindings: nvmem: Add qcom,sc7180-qfprom compatible string arm64: dts: qcom: sc7180: Add soc-specific qfprom compat string nvmem: qfprom: Don't touch certain fuses .../bindings/nvmem/qcom,qfprom.yaml | 4 +- arch/arm64/boot/dts/qcom/sc7180.dtsi | 2 +- drivers/nvmem/qfprom.c | 55 +++++++++++++++++-- 3 files changed, 55 insertions(+), 6 deletions(-) -- 2.26.2