44 lines
1.9 KiB
Plaintext
44 lines
1.9 KiB
Plaintext
Qualcomm LPASS QDSP6v5 Peripheral Image Loader
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pil-qdsp6v5-lpass is a peripheral image loader (PIL) driver. It is used for
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loading QDSP6v5 (Hexagon) firmware images for Low Power Audio Subsystems
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into memory and preparing the subsystem's processor to execute code. It's
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also responsible for shutting down the processor when it's not needed.
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Required properties:
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- compatible: Must be "qcom,pil-q6v5-lpass"
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- reg: Pairs of physical base addresses and region sizes of
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memory mapped registers.
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- reg-names: Names of the bases for the above registers. "qdsp6_base"
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"halt_base", and "restart_reg" are expected.
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- interrupts: The lpass watchdog interrupt
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- vdd_cx-supply: Reference to the regulator that supplies the vdd_cx domain.
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- qcom,firmware-name: Base name of the firmware image. Ex. "lpass"
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- qcom,gpio-err-fatal: GPIO used by the lpass to indicate error fatal to the apps.
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- qcom,gpio-err-ready: GPIO used by the lpass to indicate apps error service is ready.
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- qcom,gpio-force-stop: GPIO used by the apps to force the lpass to shutdown.
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- qcom,gpio-proxy-unvote: GPIO used by the lpass to indicate apps clock is ready.
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Optional properties:
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- vdd_pll-supply: Reference to the regulator that supplies the PLL's rail.
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- qcom,vdd_pll: Voltage to be set for the PLL's rail.
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Example:
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qcom,lpass@fe200000 {
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compatible = "qcom,pil-q6v5-lpass";
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reg = <0xfe200000 0x00100>,
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<0xfd485100 0x00010>,
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<0xfc4016c0 0x00004>;
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reg-names = "qdsp6_base", "halt_base", "restart_reg";
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interrupts = <0 194 1>;
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vdd_cx-supply = <&pm8841_s2>;
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qcom,firmware-name = "lpass";
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/* GPIO inputs from lpass */
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qcom,gpio-err-fatal = <&smp2pgpio_ssr_smp2p_2_in 0 0>;
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qcom,gpio-proxy-unvote = <&smp2pgpio_ssr_smp2p_2_in 2 0>;
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/* GPIO output to lpass */
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qcom,gpio-force-stop = <&smp2pgpio_ssr_smp2p_2_out 0 0>;
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};
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