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Diffstat (limited to 'Documentation/devicetree/bindings/sound/fsl,dsp,lpa.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/fsl,dsp,lpa.txt | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/fsl,dsp,lpa.txt b/Documentation/devicetree/bindings/sound/fsl,dsp,lpa.txt new file mode 100644 index 000000000000..194442a90a77 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/fsl,dsp,lpa.txt @@ -0,0 +1,24 @@ +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"; +}; |