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NXP LPA(Low Power Audio) DSP
The DTS is for i.MX8MP DSP offload audio playback. DSP only use OCRAM
and OCRAM_A when audio playback, so DRAM can enter retention mode to
save Power. As the size limitation of OCRAM and OCRAM_A and the size
audio decoder library, the LPA playback only can support MP3.
OCRAM address is 0x900000-0x990000. ATF will use 0x960000-0x980000.
DSP LPA will use ocram(0x900000-0x960000) and ocram_e(0x980000-
0x990000)
Required properties:
- compatible : Contains "fsl,imx8mp-dsp-lpa".
- fsl,dsp-firmware : LPA DSP FW name.
Example:
&dsp {
compatible = "fsl,imx8mp-dsp-lpa";
ocram = <&ocram>;
ocram-e = <&ocram_e>;
fsl,dsp-firmware = "imx/dsp/hifi4_imx8mp_lpa.bin";
status = "okay";
};
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