From patchwork Wed Sep 21 08:41:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Reid X-Patchwork-Id: 672670 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3sfCld3HZzz9sRZ for ; Wed, 21 Sep 2016 18:41:33 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755683AbcIUIl3 (ORCPT ); Wed, 21 Sep 2016 04:41:29 -0400 Received: from 203-59-230-133.perm.iinet.net.au ([203.59.230.133]:37052 "EHLO preid-centos7.electromag.com.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754576AbcIUIlZ (ORCPT ); Wed, 21 Sep 2016 04:41:25 -0400 Received: by preid-centos7.electromag.com.au (Postfix, from userid 1000) id 998F435E12233; Wed, 21 Sep 2016 16:41:18 +0800 (AWST) From: Phil Reid 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 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> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1474447274-90821-1-git-send-email-preid@electromag.com.au> References: <1474447274-90821-1-git-send-email-preid@electromag.com.au> Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@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>; + }; + }; +};