Received: by 2002:ac0:a5a7:0:0:0:0:0 with SMTP id m36-v6csp378002imm;
        Thu, 26 Jul 2018 05:20:51 -0700 (PDT)
X-Google-Smtp-Source: AAOMgpcrYIQy13e6DAAMMhE30H1nRHQ6j6asHWlDVmZg5xyV9NYDbDcZzC4N1hmrjWQJIk59qkOD
X-Received: by 2002:a17:902:864b:: with SMTP id y11-v6mr1763623plt.335.1532607651216;
        Thu, 26 Jul 2018 05:20:51 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1532607651; cv=none;
        d=google.com; s=arc-20160816;
        b=jjLodRvUOJ+1d09EJ4yGWypCTvlj00Um4l4lrw0+vaXedJpUccv0KLD6FCIgPEL3Gf
         jiDUuu2cx881HjjEcFug6kI60I3d+y904gkP4e+TtTPwqXY73oW5QfG6odp+089e3j7T
         iL0IeGEpCapG82SAAb1VQd/0Z69roPk3A1jHihU4O00grNOuBbDPJWiQC0POHAUYjxnt
         ixdqrjFopgx46NVutf5i2fEQRC8pKL/P1nS6PsJqJu//pwpQXD4xHOZ5do+0k1bMSJfV
         i7L3ffXIdTGsI00jfDrYWEZslwFAdAUrOX+/LCEOHH2XFk99h3/NKpaRAahSwvjWkr25
         Dp6g==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=list-id:precedence:sender:mime-version:references:in-reply-to
         :message-id:date:subject:cc:to:from:arc-authentication-results;
        bh=gBpBLW1iG7vDYxHJT2TR9wuKO0c+uSNM7lGrmSEr7rk=;
        b=ROHcWA/39HTArO1OMT7Bo3vduz3I6ttHu04i7gTdij3BozWtCH8Buub191AxBgAYLj
         aHiDkCb0vfrWb+J3kevVviCOd0KBwlzh4gGvcs+QKlinroL9PyU4ypLnkNNPLZJZlIz3
         RD3i8fQmJwSVQV6YrZjMs/s4C2sLSWcS0BWB0XbRQ4DWtpPra8evNoQ2WdUesRtPygzi
         WLoBlbPtngUbLujUOuvv4ILPUl8i88EP+egqu4Z1Ln1+4XMwIxGP4M8IuZkD8lSLOF+g
         uBUNHMCVs78ASo/klwYzHKss0FWK84E+9kE9keMGReOhlcnXXKBNQqlepml9qz7HaQl1
         tlpA==
ARC-Authentication-Results: i=1; mx.google.com;
       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=fail (p=NONE sp=NONE dis=NONE) header.from=nvidia.com
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67])
        by mx.google.com with ESMTP id w18-v6si1248459pfi.88.2018.07.26.05.20.36;
        Thu, 26 Jul 2018 05:20:51 -0700 (PDT)
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;
       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=fail (p=NONE sp=NONE dis=NONE) header.from=nvidia.com
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1730263AbeGZNgK (ORCPT <rfc822;ttoukan.linux@gmail.com>
        + 99 others); Thu, 26 Jul 2018 09:36:10 -0400
Received: from hqemgate16.nvidia.com ([216.228.121.65]:11871 "EHLO
        hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1729479AbeGZNgJ (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 26 Jul 2018 09:36:09 -0400
Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1, AES128-SHA)
        id <B5b59bc4c0000>; Thu, 26 Jul 2018 05:19:24 -0700
Received: from HQMAIL108.nvidia.com ([172.20.161.6])
  by hqpgpgate102.nvidia.com (PGP Universal service);
  Thu, 26 Jul 2018 05:19:29 -0700
X-PGP-Universal: processed;
        by hqpgpgate102.nvidia.com on Thu, 26 Jul 2018 05:19:29 -0700
Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL108.nvidia.com
 (172.18.146.13) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Thu, 26 Jul
 2018 12:19:34 +0000
Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL101.nvidia.com
 (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1347.2 via Frontend
 Transport; Thu, 26 Jul 2018 12:19:34 +0000
Received: from dhcp-10-21-25-168.Nvidia.com (Not Verified[10.21.25.201]) by hqnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121)
        id <B5b59bc530001>; Thu, 26 Jul 2018 05:19:33 -0700
From:   Aapo Vienamo <avienamo@nvidia.com>
To:     Ulf Hansson <ulf.hansson@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Thierry Reding <thierry.reding@gmail.com>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Mikko Perttunen <mperttunen@nvidia.com>
CC:     <linux-mmc@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        Aapo Vienamo <avienamo@nvidia.com>
Subject: [PATCH v2 02/10] dt-bindings: mmc: tegra: Add nvidia,only-1-8-v property
Date:   Thu, 26 Jul 2018 15:19:12 +0300
Message-ID: <1532607560-11253-3-git-send-email-avienamo@nvidia.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1532607560-11253-1-git-send-email-avienamo@nvidia.com>
References: <1532607560-11253-1-git-send-email-avienamo@nvidia.com>
X-NVConfidentiality: public
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Add a property to mark controllers which operate at a 1.8 V fixed I/O
voltage.

This feature of the hardware needs to be signaled this way because it
cannot be probed at runtime or reliably derived from other properties.

Signed-off-by: Aapo Vienamo <avienamo@nvidia.com>
---
 Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
index 90c214d..95010cf 100644
--- a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
+++ b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
@@ -45,6 +45,8 @@ Optional properties for Tegra210 and Tegra186:
   for controllers supporting multiple voltage levels. The order of names
   should correspond to the pin configuration states in pinctrl-0 and
   pinctrl-1.
+- nvidia,only-1-8-v : The presence of this property indicates that the
+  controller operates at a 1.8 V fixed I/O voltage.
 
 Example:
 sdhci@700b0000 {
-- 
2.7.4