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authorMateusz Kulikowski <mateusz.kulikowski@gmail.com>2016-03-31 23:12:29 +0200
committerTom Rini <trini@konsulko.com>2016-04-01 17:18:12 -0400
commit5b47271c18e107408b40198420ea484b44b927a9 (patch)
tree8430c8de28ce2485c402fdde14acd5fc5ed30f79 /doc
parentd33776e43dc8471ab03920dda77b00333a8ddd3e (diff)
drivers: spmi: Add support for Qualcomm SPMI bus driver
Support SPMI arbiter on Qualcomm Snapdragon devices. Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
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diff --git a/doc/device-tree-bindings/spmi/spmi-msm.txt b/doc/device-tree-bindings/spmi/spmi-msm.txt
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+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>;
+};