From patchwork Mon Jun 22 14:49:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 11618065 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 694A6618 for ; Mon, 22 Jun 2020 14:50:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4BECA206E2 for ; Mon, 22 Jun 2020 14:50:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="noE6rzjA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729397AbgFVOtx (ORCPT ); Mon, 22 Jun 2020 10:49:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60186 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729377AbgFVOtv (ORCPT ); Mon, 22 Jun 2020 10:49:51 -0400 Received: from mail-pf1-x441.google.com (mail-pf1-x441.google.com [IPv6:2607:f8b0:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7700AC061798 for ; Mon, 22 Jun 2020 07:49:51 -0700 (PDT) Received: by mail-pf1-x441.google.com with SMTP id x22so8524586pfn.3 for ; Mon, 22 Jun 2020 07:49:51 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=Qfe9MWBMEBHsI86sPJ1/VzBuaNsbA6yh79jl7tZLGVc=; b=noE6rzjAHbCSxC7tX8HlKVHCb0CEFAczx2ArscLI20zq8bkQQhUlBfy+FIQsPwrR7x cvDYnY4V8vBIIR2oBf78JYpUctOIblm3YMTHupTCfVe3mRrythS+AXhyTSqSI825/MJS vWz4QdfQznJEJAuuCMv/kKNqX61PkjcUmooxs= 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=Qfe9MWBMEBHsI86sPJ1/VzBuaNsbA6yh79jl7tZLGVc=; b=PILIoEmKCgpvXHUrYulE5f9A4Ot+vreTg6nyWR+Mv36e/SNVrPRFguQ845tz3voIcJ f4jnmvQL6+P/4K/SlBH7DKC08QzZGxow/i9wBZjyxvS32fy/6ZNHWYnL4WiD/e9tyIVF CNmQSb/uAr2bGfZk4I/KxN7OS7O3OsgiAxlt0dHWIraZ/iWwq137WkWoUet9jatZ7HHd YTeFIfX9jZjKwokcJq3nLpWkY9FBRr3hPzjfAdI32iwqoCnDrBLSbfJSAy6nptbOT2nN uXwtHNiVxH8QA8r33FGirr6BJXqQwJWqbyx5wfDLGivwnPBZPR/m15QRiLx0J+67bMBn xEzA== X-Gm-Message-State: AOAM533fIPpwh7Bx/oOCpJkIHn3ESL3r5928wW6ipc+JpP6MkeIUzv+p hFkcREE4A9K1ZqLbw2KuySONvw== X-Google-Smtp-Source: ABdhPJyh7QQHMOpk1qFYqdtZsboRjcCG3J3dsWm073sUl83fa/Ubi9W1EB3RScpX3lgCm/Nz5Mhoaw== X-Received: by 2002:aa7:95bd:: with SMTP id a29mr20613411pfk.57.1592837391001; Mon, 22 Jun 2020 07:49:51 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id 77sm13903018pfu.139.2020.06.22.07.49.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Jun 2020 07:49:50 -0700 (PDT) From: Douglas Anderson To: Srinivas Kandagatla , Rob Herring , Bjorn Andersson , Andy Gross Cc: mturney@codeaurora.org, Jeffrey Hugo , rnayak@codeaurora.org, dhavalp@codeaurora.org, saiprakash.ranjan@codeaurora.org, sparate@codeaurora.org, linux-arm-msm@vger.kernel.org, mkurumel@codeaurora.org, Ravi Kumar Bokka , Douglas Anderson , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 2/4] dt-bindings: nvmem: Add properties needed for blowing fuses Date: Mon, 22 Jun 2020 07:49:27 -0700 Message-Id: <20200622074845.v4.2.I3b5c3bfaf5fb2d28d63f1b5ee92980900e3f8251@changeid> X-Mailer: git-send-email 2.27.0.111.gc72c7da667-goog In-Reply-To: <20200622144929.230498-1-dianders@chromium.org> References: <20200622144929.230498-1-dianders@chromium.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Ravi Kumar Bokka On some systems it's possible to actually blow the fuses in the qfprom from the kernel. Add properties to support that. NOTE: Whether this is possible depends on the BIOS settings and whether the kernel has permissions here, so not all boards will be able to blow fuses in the kernel. Signed-off-by: Ravi Kumar Bokka Signed-off-by: Douglas Anderson Reviewed-by: Rob Herring --- Changes in v4: - Clock name is "core", not "sec". - Example under "soc" to get #address-cells and #size-cells. Changes in v3: - Add an extra reg range (at 0x6000 offset for SoCs checked) - Define two options for reg: 1 item or 4 items. - No reg-names. - Add "clocks" and "clock-names" to list of properties. - Clock is now "sec", not "secclk". - Add "vcc-supply" to list of properties. - Fixed up example. .../bindings/nvmem/qcom,qfprom.yaml | 50 ++++++++++++++++++- 1 file changed, 48 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/nvmem/qcom,qfprom.yaml b/Documentation/devicetree/bindings/nvmem/qcom,qfprom.yaml index 39f97c1c83a4..d10a0cf91ba7 100644 --- a/Documentation/devicetree/bindings/nvmem/qcom,qfprom.yaml +++ b/Documentation/devicetree/bindings/nvmem/qcom,qfprom.yaml @@ -17,8 +17,27 @@ properties: const: qcom,qfprom reg: - items: - - description: The corrected region. + # If the QFPROM is read-only OS image then only the corrected region + # needs to be provided. If the QFPROM is writable then all 4 regions + # must be provided. + oneOf: + - items: + - description: The corrected region. + - items: + - description: The corrected region. + - description: The raw region. + - description: The config region. + - description: The security control region. + + # Clock must be provided if QFPROM is writable from the OS image. + clocks: + maxItems: 1 + clock-names: + const: core + + # Supply reference must be provided if QFPROM is writable from the OS image. + vcc-supply: + description: Our power supply. # Needed if any child nodes are present. "#address-cells": @@ -31,6 +50,33 @@ required: - reg examples: + - | + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + efuse@784000 { + compatible = "qcom,qfprom"; + reg = <0 0x00784000 0 0x8ff>, + <0 0x00780000 0 0x7a0>, + <0 0x00782000 0 0x100>, + <0 0x00786000 0 0x1fff>; + clocks = <&gcc GCC_SEC_CTRL_CLK_SRC>; + clock-names = "core"; + #address-cells = <1>; + #size-cells = <1>; + + vcc-supply = <&vreg_l11a_1p8>; + + hstx-trim-primary@25b { + reg = <0x25b 0x1>; + bits = <1 3>; + }; + }; + }; + - | soc { #address-cells = <2>;