Commit bc3ab388 authored by Daniel Baluta's avatar Daniel Baluta Committed by Shawn Guo
Browse files

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: default avatarDaniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent 78e80c4b

arch/arm64/boot/dts/freescale/imx8mp.dtsi

+30 −0
Original line number Diff line number Diff line
@@ -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";

		};

	};

};