Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754381AbaDDS7X (ORCPT ); Fri, 4 Apr 2014 14:59:23 -0400 Received: from smtp.codeaurora.org ([198.145.11.231]:59324 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754038AbaDDSpl (ORCPT ); Fri, 4 Apr 2014 14:45:41 -0400 From: Stephen Boyd To: Mike Turquette Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Mark Brown , Saravana Kannan , Subject: [PATCH 4/4] devicetree: bindings: qcom,mmcc: Document GDSC binding Date: Fri, 4 Apr 2014 11:45:36 -0700 Message-Id: <1396637136-29974-5-git-send-email-sboyd@codeaurora.org> X-Mailer: git-send-email 1.9.0.1.gd5ccf8c In-Reply-To: <1396637136-29974-1-git-send-email-sboyd@codeaurora.org> References: <1396637136-29974-1-git-send-email-sboyd@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Document the GDSC nodes present within the multimedia clock controller. Cc: Signed-off-by: Stephen Boyd --- .../devicetree/bindings/clock/qcom,mmcc.txt | 42 ++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/Documentation/devicetree/bindings/clock/qcom,mmcc.txt b/Documentation/devicetree/bindings/clock/qcom,mmcc.txt index d572e9964c54..695f86ad94ea 100644 --- a/Documentation/devicetree/bindings/clock/qcom,mmcc.txt +++ b/Documentation/devicetree/bindings/clock/qcom,mmcc.txt @@ -19,3 +19,45 @@ Example: #clock-cells = <1>; #reset-cells = <1>; }; + +Qualcomm Global Distributed Switch Controller (GDSC) Binding +------------------------------------------------------------ + +The GDSC is responsible for safely collapsing and restoring power to +peripheral cores on chipsets like msm8974 for power savings. + +Required properties: + - regulator-name: A string used as a descriptive name for regulator outputs + +Optional properties: + - parent-supply: phandle to the parent supply/regulator node + - qcom,retain-mem: Presence denotes a hardware requirement to leave the + forced core memory retention signals in the core's clock + branch control registers asserted. + - qcom,retain-periph: Presence denotes a hardware requirement to leave the + forced periph memory retention signal in the core's clock + branch control registers asserted. + - qcom,skip-logic-collapse: Presence denotes a requirement to leave power to + the core's logic enabled. + - qcom,support-hw-trigger: Presence denotes a hardware feature to switch + on/off this regulator based on internal HW signals + to save more power. + +Example: + clock-controller@4000000 { + compatible = "qcom,mmcc-msm8974"; + reg = <0x4000000 0x1000>; + #clock-cells = <1>; + #reset-cells = <1>; + + regulators { + gdsc_oxili_gx: gdsc_oxili_gx { + regulator-name = "gdsc_oxili_gx"; + parent-supply = <&pm8841_s4>; + qcom,retain-mem; + qcom,retain-periph; + qcom,skip-logic-collapse; + qcom,support-hw-trigger; + }; + }; + }; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/