From patchwork Wed May 29 08:21:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joseph Lo X-Patchwork-Id: 1106945 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=pass (p=none dis=none) header.from=nvidia.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=nvidia.com header.i=@nvidia.com header.b="GRsZ+TMB"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 45DNwk3yKpz9s55 for ; Wed, 29 May 2019 18:21:58 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726205AbfE2IV5 (ORCPT ); Wed, 29 May 2019 04:21:57 -0400 Received: from hqemgate16.nvidia.com ([216.228.121.65]:2635 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726102AbfE2IV4 (ORCPT ); Wed, 29 May 2019 04:21:56 -0400 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Wed, 29 May 2019 01:21:54 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Wed, 29 May 2019 01:21:54 -0700 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Wed, 29 May 2019 01:21:54 -0700 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 29 May 2019 08:21:54 +0000 Received: from HQMAIL104.nvidia.com (172.18.146.11) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 29 May 2019 08:21:51 +0000 Received: from hqnvemgw02.nvidia.com (172.16.227.111) by HQMAIL104.nvidia.com (172.18.146.11) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 29 May 2019 08:21:51 +0000 Received: from josephl-linux.nvidia.com (Not Verified[10.19.108.132]) by hqnvemgw02.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Wed, 29 May 2019 01:21:51 -0700 From: Joseph Lo To: Thierry Reding , Peter De Schrijver , Jonathan Hunter , "Rob Herring" , Stephen Boyd CC: , , , , Joseph Lo Subject: [PATCH V4 1/8] dt-bindings: memory: tegra: Add external memory controller binding for Tegra210 Date: Wed, 29 May 2019 16:21:32 +0800 Message-ID: <20190529082139.5581-2-josephl@nvidia.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190529082139.5581-1-josephl@nvidia.com> References: <20190529082139.5581-1-josephl@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1559118114; bh=M6XClSAqRcTCzWoRxr+WNOjVjPa8z/F09Ee0LVJBj0U=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Transfer-Encoding:Content-Type; b=GRsZ+TMB5XWOYDxwrOS4SFU/6fswClB8p/pGizRrOhyQ/QoaNT9UJ+FJy93WGNtDC bTQrc7h0J9sjvmtc5JjTRuI8G18uITVwOe/WLsLqB0pqIY07RcYj7IQPBbiqmVgnYZ hB9o+noyPcWj2tZwvQTGQ07VK1Uu19AtrkkBrV146+1JVTiAmRSOTqumnH8hmO6tdO b+mgwUShl11pPbh93+W9tUhB0dqeAvHiq9KZV3stDnuIPdtYP19DsRIS+CCdvEfmPj P2iRlmLwomRPhvQ8CidQ6+o3eAMikfYdGbH/ME3WOGkegAbVWWDXcPyT9t8+QvM2NQ MnWPECuzvDQdA== Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Add the binding document for the external memory controller (EMC) which communicates with external LPDDR4 devices. It includes the bindings of the EMC node and a sub-node of EMC table which under the reserved memory node. The EMC table contains the data of the rates that EMC supported. Signed-off-by: Joseph Lo --- v4: - no change v3: - drop the bindings of EMC table - add memory-region and reserved-memory node for EMC table --- .../nvidia,tegra210-emc.txt | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.txt diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.txt b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.txt new file mode 100644 index 000000000000..d65aeef2329c --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra210-emc.txt @@ -0,0 +1,55 @@ +NVIDIA Tegra210 SoC EMC (external memory controller) +==================================================== + +Device node +=========== +Required properties : +- compatible : should be "nvidia,tegra210-emc". +- reg : physical base address and length of the controller's registers. +- clocks : phandles of the possible source clocks. +- clock-names : names of the possible source clocks. +- interrupts : Should contain the EMC general interrupt. +- memory-region : phandle to the reserved memory (see + Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt) which + contains a sub-node of EMC table. +- nvidia,memory-controller : phandle of the memory controller. + +Reserved memory node +==================== +Should contain a sub-node of EMC table with required properties: +- compatible : should be "nvidia,tegra210-emc-table". +- reg : physical address and length of the location of EMC table. + +Example: + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + emc_table: emc-table@8be00000 { + compatible = "nvidia,tegra210-emc-table"; + reg = <0x0 0x8be00000 0x0 0x10000>; + status = "okay"; + }; + }; + + external-memory-controller@7001b000 { + compatible = "nvidia,tegra210-emc"; + reg = <0x0 0x7001b000 0x0 0x1000>, + <0x0 0x7001e000 0x0 0x1000>, + <0x0 0x7001f000 0x0 0x1000>; + clocks = <&tegra_car TEGRA210_CLK_EMC>, + <&tegra_car TEGRA210_CLK_PLL_M>, + <&tegra_car TEGRA210_CLK_PLL_C>, + <&tegra_car TEGRA210_CLK_PLL_P>, + <&tegra_car TEGRA210_CLK_CLK_M>, + <&tegra_car TEGRA210_CLK_PLL_M_UD>, + <&tegra_car TEGRA210_CLK_PLL_MB_UD>, + <&tegra_car TEGRA210_CLK_PLL_MB>, + <&tegra_car TEGRA210_CLK_PLL_P_UD>; + clock-names = "emc", "pll_m", "pll_c", "pll_p", "clk_m", + "pll_m_ud", "pll_mb_ud", "pll_mb", "pll_p_ud"; + interrupts = ; + memory-region = <&emc_table>; + nvidia,memory-controller = <&mc>; + };