redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

MLK-24365-3 dts: dsp: imx8mp: add dts for lpa 

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 and AAC.
OCRAM address is 0x900000-0x990000. ATF will use 0x960000-0x980000.
DSP LPA will use ocram(0x900000-0x960000) and ocram_e(0x980000-
0x990000)

Signed-off-by: Bing Song <bing.song@nxp.com>
5.4-rM2-2.2.x-imx-squashed
Bing Song 2020-06-15 10:59:09 +08:00
parent 3818e25a7f
commit 396def6370
4 changed files with 51 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
Documentation/devicetree/bindings/sound/fsl,dsp,lpa.txt 100644
View File

@ -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";
};

2
arch/arm64/boot/dts/freescale/Makefile
View File

@ -66,7 +66,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk.dtb imx8mp-evk-root.dtb imx8mp-evk-inmate.d
imx8mp-evk-rm67191.dtb imx8mp-evk-flexcan2.dtb imx8mp-evk-it6263-lvds-dual-channel.dtb \
imx8mp-evk-jdi-wuxga-lvds-panel.dtb imx8mp-ab2.dtb imx8mp-evk-sof-wm8960.dtb \
imx8mp-evk-dsp.dtb imx8mp-evk-ov2775.dtb imx8mp-evk-basler.dtb imx8mp-evk-pcie-ep.dtb \
imx8mp-evk-spdif-lb.dtb
imx8mp-evk-spdif-lb.dtb imx8mp-evk-dsp-lpa.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk.dtb imx8mq-evk-rpmsg.dtb imx8mq-evk-pcie1-m2.dtb imx8mq-evk-usd-wifi.dtb \
imx8mq-evk-usdhc2-m2.dtb imx8mq-evk-pcie-ep.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk-ak4497.dtb imx8mq-evk-audio-tdm.dtb imx8mq-evk-pdm.dtb

16
arch/arm64/boot/dts/freescale/imx8mp-evk-dsp-lpa.dts 100644
View File

@ -0,0 +1,16 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright 2020 NXP
*/
/dts-v1/;
#include "imx8mp-evk-dsp.dts"
&dsp {
compatible = "fsl,imx8mp-dsp-lpa";
ocram = <&ocram>;
ocram-e = <&ocram_e>;
fsl,dsp-firmware = "imx/dsp/hifi4_imx8mp_lpa.bin";
status = "okay";
};

11
arch/arm64/boot/dts/freescale/imx8mp.dtsi
View File

@ -177,7 +177,16 @@
#address-cells = <2>;
#size-cells = <2>;
ranges;
ocram: ocram@900000 {
no-map;
reg = <0 0x900000 0 0x60000>;
};
ocram_e: ocram_e@980000 {
no-map;
reg = <0 0x980000 0 0x10000>;
};
/*
* Memory reserved for optee usage. Please do not use.
* This will be automaticky added to dtb if OP-TEE is installed.