From patchwork Fri Feb 7 14:44:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pradeep P V K X-Patchwork-Id: 11370589 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 79145921 for ; Fri, 7 Feb 2020 14:46:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 58A73217BA for ; Fri, 7 Feb 2020 14:46:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727005AbgBGOpt (ORCPT ); Fri, 7 Feb 2020 09:45:49 -0500 Received: from alexa-out-blr-02.qualcomm.com ([103.229.18.198]:2101 "EHLO alexa-out-blr-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726867AbgBGOps (ORCPT ); Fri, 7 Feb 2020 09:45:48 -0500 Received: from ironmsg01-blr.qualcomm.com ([10.86.208.130]) by alexa-out-blr-02.qualcomm.com with ESMTP/TLS/AES256-SHA; 07 Feb 2020 20:15:45 +0530 Received: from c-ppvk-linux.qualcomm.com ([10.206.24.34]) by ironmsg01-blr.qualcomm.com with ESMTP; 07 Feb 2020 20:15:18 +0530 Received: by c-ppvk-linux.qualcomm.com (Postfix, from userid 2304101) id 587ED47EB; Fri, 7 Feb 2020 20:15:17 +0530 (IST) From: Pradeep P V K To: adrian.hunter@intel.com, robh+dt@kernel.org, ulf.hansson@linaro.org, asutoshd@codeaurora.org, stummala@codeaurora.org, sayalil@codeaurora.org, rampraka@codeaurora.org, vbadigan@codeaurora.org, sboyd@kernel.org, georgi.djakov@linaro.org Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, agross@kernel.org, linux-mmc-owner@vger.kernel.org, mka@chromium.org, Pradeep P V K Subject: [RFC v3 2/2] dt-bindings: mmc: sdhci-msm: Add interconnect BW scaling strings Date: Fri, 7 Feb 2020 20:14:55 +0530 Message-Id: <1581086695-16645-3-git-send-email-ppvk@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1581086695-16645-1-git-send-email-ppvk@codeaurora.org> References: <1581086695-16645-1-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. changes from RFC v2 -> v3: - Addressed review comments on v2. - Modified interconnect bandwidth support using OPP framework. Signed-off-by: Pradeep P V K --- 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 7ee639b..cbe97b8 100644 --- a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt +++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt @@ -40,6 +40,21 @@ Required properties: "cal" - reference clock for RCLK delay calibration (optional) "sleep" - sleep clock for RCLK delay calibration (optional) +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 { @@ -57,6 +72,9 @@ 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"; }; sdhc_2: sdhci@f98a4900 {