From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-path: From: Eric Anholt To: Florian Fainelli , devicetree@vger.kernel.org, Rob Herring , Mark Rutland , Wim Van Sebroeck , Guenter Roeck , linux-watchdog@vger.kernel.org Cc: linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stefan Wahren , bcm-kernel-feedback-list@broadcom.com, Eric Anholt Subject: [PATCH v3 1/5] dt-bindings: soc: Add a new binding for the BCM2835 PM node. Date: Fri, 30 Nov 2018 12:27:39 -0800 Message-Id: <20181130202743.20585-2-eric@anholt.net> In-Reply-To: <20181130202743.20585-1-eric@anholt.net> References: <20181130202743.20585-1-eric@anholt.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit List-ID: This binding supersedes the bcm2835-pm-wdt binding which only covered enough to provide a watchdog, but the HW block is actually mostly about power domains. Signed-off-by: Eric Anholt --- .../bindings/soc/bcm/brcm,bcm2835-pm.txt | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt new file mode 100644 index 000000000000..7818d33a158f --- /dev/null +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt @@ -0,0 +1,42 @@ +BCM2835 PM (Power domains, watchdog) + +The PM block controls power domains and some reset lines, and includes +a watchdog timer. This binding supersedes the brcm,bcm2835-pm-wdt +binding which covered some of PM's register range and functionality. + +Required properties: + +- compatible: Should be "brcm,bcm2835-pm" +- reg: Specifies base physical address and size of the two + register ranges ("PM" and "ASYNC_BRIDGE" in that + order) +- clocks: a) v3d: The V3D clock from CPRMAN + b) peri_image: The PERI_IMAGE clock from CPRMAN + c) h264: The H264 clock from CPRMAN + d) isp: The ISP clock from CPRMAN +- #reset-cells: Should be 1. This property follows the reset controller + bindings[1]. +- #power-domain-cells: Should be 1. This property follows the power domain + bindings[2]. + +Optional properties: + +- timeout-sec: Contains the watchdog timeout in seconds + +[1] Documentation/devicetree/bindings/reset/reset.txt +[2] Documentation/devicetree/bindings/power/power_domain.txt + +Example: + +pm { + compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt"; + #power-domain-cells = <1>; + #reset-cells = <1>; + reg = <0x7e100000 0x114>, + <0x7e00a000 0x24>; + clocks = <&clocks BCM2835_CLOCK_V3D>, + <&clocks BCM2835_CLOCK_PERI_IMAGE>, + <&clocks BCM2835_CLOCK_H264>, + <&clocks BCM2835_CLOCK_ISP>; + clock-names = "v3d", "peri_image", "h264", "isp"; +}; -- 2.20.0.rc1