From 5b47271c18e107408b40198420ea484b44b927a9 Mon Sep 17 00:00:00 2001 From: Mateusz Kulikowski Date: Thu, 31 Mar 2016 23:12:29 +0200 Subject: drivers: spmi: Add support for Qualcomm SPMI bus driver Support SPMI arbiter on Qualcomm Snapdragon devices. Signed-off-by: Mateusz Kulikowski Reviewed-by: Simon Glass Tested-by: Simon Glass --- doc/device-tree-bindings/spmi/spmi-msm.txt | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 doc/device-tree-bindings/spmi/spmi-msm.txt (limited to 'doc/device-tree-bindings/spmi/spmi-msm.txt') diff --git a/doc/device-tree-bindings/spmi/spmi-msm.txt b/doc/device-tree-bindings/spmi/spmi-msm.txt new file mode 100644 index 0000000..ae47673 --- /dev/null +++ b/doc/device-tree-bindings/spmi/spmi-msm.txt @@ -0,0 +1,26 @@ +Qualcomm SPMI arbiter/bus driver + +This is bus driver for Qualcomm chips that use SPMI to communicate with PMICs. + +Required properties: +- compatible: "qcom,spmi-pmic-arb" +- reg: Register block adresses and sizes for various parts of device: + 1) PMIC arbiter channel mapping base (PMIC_ARB_REG_CHNLn) + 2) SPMI write command (master) registers (PMIC_ARB_CORE_SW_DEC_CHANNELS) + 3) SPMI read command (observer) registers (PMIC_ARB_CORE_REGISTERS_OBS) + +Optional properties (if not set by parent): +- #address-cells: 0x1 - childs slave ID address +- #size-cells: 0x1 + +All PMICs should be placed as a child nodes of bus arbiter. +Automatic detection of childs is currently not supported. + +Example: + +spmi@200f000 { + compatible = "qcom,spmi-pmic-arb"; + reg = <0x200f800 0x200 0x2400000 0x400000 0x2c00000 0x400000>; + #address-cells = <0x1>; + #size-cells = <0x1>; +}; -- cgit v1.1