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arm64: dts: imx8mp: Add dsp node 

i.MX8 MPlus SoC integrates Cadence HIFI4 DSP. This core runs either a
custom firmware or the open source SOF firmware [1]

DSP device is handled by SOF OF driver found in
sound/soc/sof/sof-of-dev.c

Notice that the DSP node makes use of:
	- dsp_reserved, a reserved memory region for various Audio
	  resources (e.g firmware loading, audio buffers, etc).
	- Messaging Unit (mu2) for passing notifications betweem ARM
	  core and DSP.

[1] https://thesofproject.github.io/latest/platforms/index.html
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Daniel Baluta 2021-07-23 14:05:40 +03:00 committed by Shawn Guo
parent 78e80c4b42
commit bc3ab388ee
1 changed files with 30 additions and 0 deletions
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30
arch/arm64/boot/dts/freescale/imx8mp.dtsi
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@ -135,6 +135,17 @@
clock-output-names = "clk_ext4";
};
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
dsp_reserved: dsp@92400000 {
reg = <0 0x92400000 0 0x2000000>;
no-map;
};
};
pmu {
compatible = "arm,cortex-a53-pmu";
interrupts = <GIC_PPI 7
@ -698,6 +709,14 @@
#mbox-cells = <2>;
};
mu2: mailbox@30e60000 {
compatible = "fsl,imx8mp-mu", "fsl,imx6sx-mu";
reg = <0x30e60000 0x10000>;
interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
#mbox-cells = <2>;
status = "disabled";
};
i2c5: i2c@30ad0000 {
compatible = "fsl,imx8mp-i2c", "fsl,imx21-i2c";
#address-cells = <1>;
@ -938,5 +957,16 @@
snps,dis-u2-freeclk-exists-quirk;
};
};
dsp: dsp@3b6e8000 {
compatible = "fsl,imx8mp-dsp";
reg = <0x3b6e8000 0x88000>;
mbox-names = "txdb0", "txdb1",
"rxdb0", "rxdb1";
mboxes = <&mu2 2 0>, <&mu2 2 1>,
<&mu2 3 0>, <&mu2 3 1>;
memory-region = <&dsp_reserved>;
status = "disabled";
};
};
};