From mboxrd@z Thu Jan 1 00:00:00 1970 From: Enric Balletbo i Serra Subject: [PATCH 1/2] devicetree: Add UCS1002 USB Port Power Controller binding Date: Tue, 26 Jan 2016 10:12:20 +0100 Message-ID: <1453799541-5445-2-git-send-email-enric.balletbo@collabora.com> References: <1453799541-5445-1-git-send-email-enric.balletbo@collabora.com> Return-path: Received: from bhuna.collabora.co.uk ([46.235.227.227]:33358 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756906AbcAZJMd (ORCPT ); Tue, 26 Jan 2016 04:12:33 -0500 In-Reply-To: <1453799541-5445-1-git-send-email-enric.balletbo@collabora.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Cc: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Sebastian Reichel , Dmitry Eremin-Solenikov , David Woodhouse , Sjoerd Simons , Martyn Welch The UCS1002-2 provides a USB port power switch for precise control of up to 2.5 amperes continuous current. You can add support to your board with current binding. Example: ucs1002: ucs1002@57 { compatible = "microchip,ucs1002"; reg = <0x57>; microchip,pin-ignore; }; Signed-off-by: Enric Balletbo i Serra --- .../devicetree/bindings/power/ucs1002.txt | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/ucs1002.txt diff --git a/Documentation/devicetree/bindings/power/ucs1002.txt b/Documentation/devicetree/bindings/power/ucs1002.txt new file mode 100644 index 0000000..1b89f0a --- /dev/null +++ b/Documentation/devicetree/bindings/power/ucs1002.txt @@ -0,0 +1,47 @@ +UCS1002-2 Programmable USB Port Power Controller with Charger Emulation bindings + +Required properties: +- compatible: "microchip,ucs1002" +- reg: integer, the I2C address of the device. + +Required properties (if pin-ignore functionality is not set): +- em-gpios: which GPIO to use for EM_EN pin. +- pwr-gpios: which GPIO to use for PWR_EN pin. +- m1-gpios: which GPIO to use for M1 pin. +- m2-gpios: which GPIO to use for M2 pin. + +Optional properties: +- interrupt-parent: the phandle of the interrupt controller that services + interrupts for this device. +- interrupts: interrupt specifiers for two interrupt sources. + - First interrupt specifier is for A_DET interrupt. + - Second interrupt specifier is for ALERT interrupt. +- microchip,current-limit: integer, maximum current in mA. Note that the default + value is based on the resistor on the COMM_SEL/ILIM pin and this value cannot + be changed to be higher than hardware set value. Accepted values are: 500000, + 900000, 1000000, 1200000, 1500000, 1800000, 2000000, 2500000 (uA) +- microchip,pin-ignore: boolean, if present uses I2C for configuration, otherwise, + we must provide EM_EN, M1 and M2 gpio mapping. + +Example (poll): + + ucs1002: ucs1002@57 { + compatible = "microchip,ucs1002"; + reg = <0x57>; + microchip,current-limit = <2000000>; + microchip,pin-ignore; + }; + +Example (interrupts + pin control): + + ucs1002: ucs1002@57 { + compatible = "microchip,ucs1002"; + reg = <0x57>; + interrupt-parent = <&gpio0>; + interrupts = <30 0>, <31 0>; + microchip,current-limit = <2000000>; + em-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>; + m1-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>; + m2-gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>; + pwr-gpios = <&gpio1 19 0>; + }; -- 2.1.0