From mboxrd@z Thu Jan 1 00:00:00 1970 From: joshc@codeaurora.org (Josh Cartwright) Date: Wed, 12 Feb 2014 13:44:23 -0600 Subject: [PATCH v6 2/6] spmi: add generic SPMI controller binding documentation In-Reply-To: <1392234267-10880-1-git-send-email-joshc@codeaurora.org> References: <1392234267-10880-1-git-send-email-joshc@codeaurora.org> Message-ID: <1392234267-10880-3-git-send-email-joshc@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: Josh Cartwright --- Documentation/devicetree/bindings/spmi/spmi.txt | 41 +++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/spmi/spmi.txt diff --git a/Documentation/devicetree/bindings/spmi/spmi.txt b/Documentation/devicetree/bindings/spmi/spmi.txt new file mode 100644 index 0000000..462a42f --- /dev/null +++ b/Documentation/devicetree/bindings/spmi/spmi.txt @@ -0,0 +1,41 @@ +System Power Management Interface (SPMI) Controller + +This document defines a generic set of bindings for use by SPMI controllers. A +controller is modelled in device tree as a node with zero or more child nodes, +each representing a unique slave on the bus. + +Required properties: +- #address-cells : must be set to 2 +- #size-cells : must be set to 0 + +Child nodes: + +An SPMI controller node can contain zero or more child nodes representing slave +devices on the bus. Child 'reg' properties are specified as an address, type +pair. The address must be in the range 0-15 (4 bits). The type must be one of +SPMI_USID (0) or SPMI_GSID (1) for Unique Slave ID or Group Slave ID respectively. +These are the identifiers "statically assigned by the system integrator", as +per the SPMI spec. + +Each child node must have one and only one 'reg' entry of type SPMI_USID. + +#include + + spmi at .. { + compatible = "..."; + reg = <...>; + + #address-cells = <2>; + #size-cells <0>; + + child at 0 { + compatible = "..."; + reg = <0 SPMI_USID>; + }; + + child at 7 { + compatible = "..."; + reg = <7 SPMI_USID + 3 SPMI_GSID>; + }; + }; -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation