From patchwork Fri Aug 10 18:13:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aapo Vienamo X-Patchwork-Id: 956439 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41nCw03xgHz9ryt for ; Sat, 11 Aug 2018 04:15:12 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728001AbeHJUpL (ORCPT ); Fri, 10 Aug 2018 16:45:11 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:11864 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728017AbeHJUpL (ORCPT ); Fri, 10 Aug 2018 16:45:11 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1, AES128-SHA) id ; Fri, 10 Aug 2018 11:13:59 -0700 Received: from HQMAIL104.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Fri, 10 Aug 2018 11:14:14 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Fri, 10 Aug 2018 11:14:14 -0700 Received: from HQMAIL105.nvidia.com (172.20.187.12) by HQMAIL104.nvidia.com (172.18.146.11) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 10 Aug 2018 18:14:13 +0000 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1347.2 via Frontend Transport; Fri, 10 Aug 2018 18:14:14 +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 ; Fri, 10 Aug 2018 11:14:13 -0700 From: Aapo Vienamo To: Ulf Hansson , Rob Herring , Mark Rutland , Thierry Reding , Jonathan Hunter , Adrian Hunter , Mikko Perttunen CC: , , , , Aapo Vienamo Subject: [PATCH v2 1/8] dt-bindings: mmc: Add DQS trim value to Tegra SDHCI Date: Fri, 10 Aug 2018 21:13:58 +0300 Message-ID: <1533924845-1466-2-git-send-email-avienamo@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1533924845-1466-1-git-send-email-avienamo@nvidia.com> References: <1533924845-1466-1-git-send-email-avienamo@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Document HS400 DQS trim value device tree property. Signed-off-by: Aapo Vienamo Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt index edecf97..32b4b4e 100644 --- a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt +++ b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt @@ -71,6 +71,7 @@ Optional properties for Tegra210 and Tegra186: trimmer value for non-tunable modes. - nvidia,default-trim : Specify the default outbound clock trimmer value. +- nvidia,dqs-trim : Specify DQS trim value for HS400 timing Notes on the pad calibration pull up and pulldown offset values: - The property values are drive codes which are programmed into the @@ -87,6 +88,9 @@ Optional properties for Tegra210 and Tegra186: - The values are programmed to the Vendor Clock Control Register. Please refer to the reference manual of the SoC for correct values. + - The DQS trim values are only used on controllers which support + HS400 timing. Only SDMMC4 on Tegra210 and Tegra 186 supports + HS400. Example: sdhci@700b0000 {