47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
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Limits Management Hardware Driver
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================================
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LMH driver provides API to interact with the LMH hardware. All the calls to
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the LMH hardware are routed via secure space.
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The device tree parameters for LMH driver are:
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Device/Asic specific properties:
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- reg : Base address of the LMH Lite hardware's interrupt status register
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and its size in bytes. 'reg' parameter is required if
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'qcom,lmh-trim-err-offset' is set.
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- qcom,lmh-trim-err-offset : This property defines the bit in the LMH
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interrupt status register, which shows whether there is a
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trim error in LMH hardware.
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- vdd-apss-supply : This property should hold the phandle of APSS regulator.
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When defined, the M4M DPM will be notified for the APSS
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voltage change.
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- qcom,lmh-odcm-disable-threshold-mA : This property holds the APSS rail
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current threshold below which the ODCM will be disabled.
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This property requires the "vdd-apss-supply" property
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defined.
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Required parameters:
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- compatible: Must be either "qcom,lmh" or "qcom,lmh_v1".
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The driver based on the compatible string will decide
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the default profile.
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- interrupts: LMH Lite hardware interrupt details.
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Example:
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qcom,lmh {
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compatible = "qcom,lmh";
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interrupts = <0 332 4>;
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reg = <0xF9117000 0x4>;
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qcom,lmh-trim-err-offset = <18>;
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vdd-apss-supply = <&pm8994_s11>;
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qcom,lmh-odcm-disable-threshold-mA = <850>;
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};
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Or for asics that don't have trim err and don't require the voltage change
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update for DPM.
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qcom,lmh {
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compatible = "qcom,lmh_v1";
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interrupts = <0 332 4>;
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};
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