From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Reid Subject: [PATCH v5 3/6] Documentation: Add sbs-manager device tree node documentation Date: Wed, 21 Sep 2016 16:41:11 +0800 Message-ID: <1474447274-90821-4-git-send-email-preid@electromag.com.au> References: <1474447274-90821-1-git-send-email-preid@electromag.com.au> Return-path: In-Reply-To: <1474447274-90821-1-git-send-email-preid@electromag.com.au> Sender: linux-pm-owner@vger.kernel.org To: wsa@the-dreams.de, robh+dt@kernel.org, mark.rutland@arm.com, sre@kernel.org, andrea.merello@gmail.com, preid@electromag.com.au, karl-heinz@schneider-inet.de, arnd@arndb.de, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org List-Id: devicetree@vger.kernel.org From: Karl-Heinz Schneider This patch adds device tree documentation for the sbs-manager Reviewed-by: Phil Reid Signed-off-by: Karl-Heinz Schneider Signed-off-by: Phil Reid --- .../bindings/power/supply/sbs,sbs-manager.txt | 62 ++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/sbs,sbs-manager.txt diff --git a/Documentation/devicetree/bindings/power/supply/sbs,sbs-manager.txt b/Documentation/devicetree/bindings/power/supply/sbs,sbs-manager.txt new file mode 100644 index 0000000..2a04b30 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/sbs,sbs-manager.txt @@ -0,0 +1,62 @@ +Binding for sbs-manager + +Required properties: +- compatible: should be "lltc,ltc1760" or use "sbs,sbs-manager" as fallback. +- reg: integer, i2c address of the device. Should be <0xa>. +Optional properties: +- gpio-controller: Marks the port as GPIO controller. + See "gpio-specifier" in .../devicetree/bindings/gpio/gpio.txt. +- #gpio-cells: Should be <2>. The first cell is the pin number, the second cell + is used to specify optional parameters: + See "gpio-specifier" in .../devicetree/bindings/gpio/gpio.txt. + +From OS view the device is basically an i2c-mux used to communicate with up to +four smart battery devices at address 0xb. The driver actually implements this +behaviour. So standard i2c-mux nodes can be used to register up to four slave +batteries. See Documentation/devicetree/bindings/i2c/i2c-mux.txt for more +information on i2c-mux nodes. Channels will be numerated starting from 1 to 4. + +Example: + +batman@0a { + compatible = "lltc,ltc1760"; + reg = <0x0a>; + #address-cells = <1>; + #size-cells = <0>; + + gpio-controller; + #gpio-cells = <2>; + + i2c@1 { + #address-cells = <1>; + #size-cells = <0>; + reg = <1>; + + battery@b { + compatible = "ti,bq2060", "sbs,sbs-battery"; + reg = <0xb>; + }; + }; + + i2c@2 { + #address-cells = <1>; + #size-cells = <0>; + reg = <2>; + + battery@b { + compatible = "ti,bq2060", "sbs,sbs-battery"; + reg = <0xb>; + }; + }; + + i2c@3 { + #address-cells = <1>; + #size-cells = <0>; + reg = <3>; + + battery@b { + compatible = "ti,bq2060", "sbs,sbs-battery"; + reg = <0xb>; + }; + }; +}; -- 1.8.3.1