Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751555AbbFXGRd (ORCPT ); Wed, 24 Jun 2015 02:17:33 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:37156 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750953AbbFXGRN (ORCPT ); Wed, 24 Jun 2015 02:17:13 -0400 From: Sascha Hauer To: linux-arm-kernel@lists.infradead.org Cc: devicetree@vger.kernel.org, Kevin Hilman , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, kernel@pengutronix.de, Matthias Brugger , Sascha Hauer Subject: [PATCH 2/4] dt-bindings: soc: Add documentation for the MediaTek SCPSYS unit Date: Wed, 24 Jun 2015 08:17:03 +0200 Message-Id: <1435126625-9634-3-git-send-email-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1435126625-9634-1-git-send-email-s.hauer@pengutronix.de> References: <1435126625-9634-1-git-send-email-s.hauer@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2264 Lines: 63 This adds documentation for the MediaTek SCPSYS unit found in MT8173 SoCs. Signed-off-by: Sascha Hauer --- .../devicetree/bindings/soc/mediatek/scpsys.txt | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/scpsys.txt diff --git a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt new file mode 100644 index 0000000..c051114 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt @@ -0,0 +1,41 @@ +MediaTek SCPSYS +=============== + +The System Control Processor System (SCPSYS) has several power management +related tasks in the system. The tasks include thermal measurement, dynamic +voltage frequency scaling (DVFS), interrupt filter and lowlevel sleep control. +The System Power Manager (SPM) inside the SCPSYS is for the MTCMOS power +domain control. + +The driver implements the Generic PM domain bindings described in +power/power_domain.txt. It provides the power domains defined in +include/dt-bindings/power/mt8173-power.h. + +Required properties: +- compatible: Must be "mediatek,mt8173-scpsys" +- #power-domain-cells: Must be 1 +- reg: Address range of the SCPSYS unit +- infracfg: must contain a phandle to the infracfg controller +- clock, clock-names: clocks according to the common clock binding. + The clocks needed "mm" and "mfg". These are the + clocks which hardware needs to be enabled before + enabling certain power domains. + +Example: + + scpsys: scpsys@10006000 { + #power-domain-cells = <1>; + compatible = "mediatek,mt8173-scpsys"; + reg = <0 0x10006000 0 0x1000>; + infracfg = <&infracfg>; + clocks = <&clk26m>, + <&topckgen CLK_TOP_MM_SEL>; + clock-names = "mfg", "mm"; + }; + +Example consumer: + + afe: mt8173-afe-pcm@11220000 { + compatible = "mediatek,mt8173-afe-pcm"; + power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>; + }; -- 2.1.4 -- 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/