From patchwork Tue Sep 29 20:58:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Evan Green X-Patchwork-Id: 1373734 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256 header.s=google header.b=RyBeF2Lo; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4C1BYp4KCBz9sSJ for ; Wed, 30 Sep 2020 06:58:22 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729368AbgI2U6S (ORCPT ); Tue, 29 Sep 2020 16:58:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40720 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729227AbgI2U6R (ORCPT ); Tue, 29 Sep 2020 16:58:17 -0400 Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 369F6C0613D0 for ; Tue, 29 Sep 2020 13:58:17 -0700 (PDT) Received: by mail-pj1-x1043.google.com with SMTP id kk9so3401992pjb.2 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=V3j4s5IsvJeGsglWGUpCP8X8oK0JQm2Qnv+qrsp4gJmn00stmmcpce0byWOjXar8oj mN6qnn0/EDaigC3dgEOYbpAP2g4KdAJwx4HX7AWaKS2gTOJYD2zBxJ5MHToD6Hvim8nt +sTcPltf/f8NSqaRbVsp+KwfSpCCdswaIfh54eXtsKoeUf38KMmNJMGJwccLDgrHOo7h Q/K7Brw8HVovJRrl4eYcoMFcI8jBZB8w2JWmM6Jvbkn/bk2clav/0ICcA3vIokKlj5+d Y6P4/ro+yV9CR6iKjOeaO1KDJwqAnhs61aOR8ubhgq2a6H/15ONY3IlzFVSpTIGbrv3y nQOA== X-Gm-Message-State: AOAM533r0dFNcs57q2+MClq9CNLuKEISE7g4b17Eetf7tvBBZ/uJd8MQ LGXoq2guY8P5J9bg6SOremv+nw== 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 Precedence: bulk List-ID: X-Mailing-List: devicetree@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(-) Reviewed-by: Douglas Anderson