From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3363C433E0 for ; Thu, 4 Jun 2020 11:16:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B8D9A20663 for ; Thu, 4 Jun 2020 11:16:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726175AbgFDLQj (ORCPT ); Thu, 4 Jun 2020 07:16:39 -0400 Received: from alexa-out-blr-02.qualcomm.com ([103.229.18.198]:58876 "EHLO alexa-out-blr-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726444AbgFDLQi (ORCPT ); Thu, 4 Jun 2020 07:16:38 -0400 Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by alexa-out-blr-02.qualcomm.com with ESMTP/TLS/AES256-SHA; 04 Jun 2020 16:45:16 +0530 Received: from c-ppvk-linux.qualcomm.com ([10.206.24.34]) by ironmsg02-blr.qualcomm.com with ESMTP; 04 Jun 2020 16:44:48 +0530 Received: by c-ppvk-linux.qualcomm.com (Postfix, from userid 2304101) id 9317B191B; Thu, 4 Jun 2020 16:44:47 +0530 (IST) From: Pradeep P V K To: bjorn.andersson@linaro.org, adrian.hunter@intel.com, robh+dt@kernel.org, ulf.hansson@linaro.org, vbadigan@codeaurora.org, sboyd@kernel.org, georgi.djakov@linaro.org, mka@chromium.org Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-mmc-owner@vger.kernel.org, rnayak@codeaurora.org, sibis@codeaurora.org, matthias@chromium.org, Pradeep P V K Subject: [PATCH V2 2/2] dt-bindings: mmc: sdhci-msm: Add interconnect BW scaling strings Date: Thu, 4 Jun 2020 16:44:43 +0530 Message-Id: <1591269283-24084-3-git-send-email-ppvk@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1591269283-24084-1-git-send-email-ppvk@codeaurora.org> References: <1591269283-24084-1-git-send-email-ppvk@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add interconnect bandwidth scaling supported strings for qcom-sdhci controller. Signed-off-by: Pradeep P V K Acked-by: Rob Herring Reviewed-by: Bjorn Andersson --- Documentation/devicetree/bindings/mmc/sdhci-msm.txt | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt index b8e1d2b..3b602fd 100644 --- a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt +++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt @@ -54,6 +54,21 @@ Required properties: - qcom,dll-config: Chipset and Platform specific value. Use this field to specify the DLL_CONFIG register value as per Hardware Programming Guide. +Optional Properties: +* Following bus parameters are required for interconnect bandwidth scaling: +- interconnects: Pairs of phandles and interconnect provider specifier + to denote the edge source and destination ports of + the interconnect path. + +- interconnect-names: For sdhc, we have two main paths. + 1. Data path : sdhc to ddr + 2. Config path : cpu to sdhc + For Data interconnect path the name supposed to be + is "sdhc-ddr" and for config interconnect path it is + "cpu-sdhc". + Please refer to Documentation/devicetree/bindings/ + interconnect/ for more details. + Example: sdhc_1: sdhci@f9824900 { @@ -71,6 +86,9 @@ Example: clocks = <&gcc GCC_SDCC1_APPS_CLK>, <&gcc GCC_SDCC1_AHB_CLK>; clock-names = "core", "iface"; + interconnects = <&qnoc MASTER_SDCC_ID &qnoc SLAVE_DDR_ID>, + <&qnoc MASTER_CPU_ID &qnoc SLAVE_SDCC_ID>; + interconnect-names = "sdhc-ddr","cpu-sdhc"; qcom,dll-config = <0x000f642c>; qcom,ddr-config = <0x80040868>; -- 1.9.1