* [PATCH] arm64: dts: imx8mp: Add dsp node
@ 2021-07-15 11:58 Daniel Baluta
2021-07-16 2:05 ` Peng Fan
0 siblings, 1 reply; 3+ messages in thread
From: Daniel Baluta @ 2021-07-15 11:58 UTC (permalink / raw)
To: shawnguo
Cc: robh+dt, s.hauer, festevam, ping.bai, qiangqing.zhang, alice.guo,
yibin.gong, linux-imx, peng.fan, devicetree, linux-arm-kernel,
daniel.baluta, linux-kernel, Daniel Baluta
From: Daniel Baluta <daniel.baluta@nxp.com>
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>
---
arch/arm64/boot/dts/freescale/imx8mp.dtsi | 28 +++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index 9f7c7f587d38..264ba540f363 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -135,6 +135,17 @@ clk_ext4: clock-ext4 {
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 +709,13 @@ mu: mailbox@30aa0000 {
#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>;
+ };
+
i2c5: i2c@30ad0000 {
compatible = "fsl,imx8mp-i2c", "fsl,imx21-i2c";
#address-cells = <1>;
@@ -938,5 +956,15 @@ usb_dwc3_1: usb@38200000 {
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";
+ };
};
};
--
2.27.0
^ permalink raw reply related [flat|nested] 3+ messages in thread* RE: [PATCH] arm64: dts: imx8mp: Add dsp node
2021-07-15 11:58 [PATCH] arm64: dts: imx8mp: Add dsp node Daniel Baluta
@ 2021-07-16 2:05 ` Peng Fan
2021-07-16 12:47 ` Daniel Baluta
0 siblings, 1 reply; 3+ messages in thread
From: Peng Fan @ 2021-07-16 2:05 UTC (permalink / raw)
To: Daniel Baluta (OSS), shawnguo
Cc: robh+dt, s.hauer, festevam, Jacky Bai, Joakim Zhang, Alice Guo,
Robin Gong, dl-linux-imx, devicetree, linux-arm-kernel,
daniel.baluta, linux-kernel, Daniel Baluta
Hi Daniel
> Subject: [PATCH] arm64: dts: imx8mp: Add dsp node
>
> From: Daniel Baluta <daniel.baluta@nxp.com>
>
> 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>
> ---
> arch/arm64/boot/dts/freescale/imx8mp.dtsi | 28
> +++++++++++++++++++++++
> 1 file changed, 28 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> index 9f7c7f587d38..264ba540f363 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> @@ -135,6 +135,17 @@ clk_ext4: clock-ext4 {
> 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 +709,13 @@ mu: mailbox@30aa0000 {
> #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>;
I think better mark this node as disabled. If its clock not enabled,
kernel may hang.
Regards,
Peng.
> + };
> +
> i2c5: i2c@30ad0000 {
> compatible = "fsl,imx8mp-i2c", "fsl,imx21-i2c";
> #address-cells = <1>;
> @@ -938,5 +956,15 @@ usb_dwc3_1: usb@38200000 {
> 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";
> + };
> };
> };
> --
> 2.27.0
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] arm64: dts: imx8mp: Add dsp node
2021-07-16 2:05 ` Peng Fan
@ 2021-07-16 12:47 ` Daniel Baluta
0 siblings, 0 replies; 3+ messages in thread
From: Daniel Baluta @ 2021-07-16 12:47 UTC (permalink / raw)
To: Peng Fan
Cc: Daniel Baluta (OSS),
shawnguo, robh+dt, s.hauer, festevam, Jacky Bai, Joakim Zhang,
Alice Guo, Robin Gong, dl-linux-imx, devicetree,
linux-arm-kernel, linux-kernel, Daniel Baluta
On Fri, Jul 16, 2021 at 5:05 AM Peng Fan <peng.fan@nxp.com> wrote:
>
> Hi Daniel
>
> > Subject: [PATCH] arm64: dts: imx8mp: Add dsp node
> >
> > From: Daniel Baluta <daniel.baluta@nxp.com>
> >
> > 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>
> > ---
> > arch/arm64/boot/dts/freescale/imx8mp.dtsi | 28
> > +++++++++++++++++++++++
> > 1 file changed, 28 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > index 9f7c7f587d38..264ba540f363 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > @@ -135,6 +135,17 @@ clk_ext4: clock-ext4 {
> > 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 +709,13 @@ mu: mailbox@30aa0000 {
> > #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>;
>
> I think better mark this node as disabled. If its clock not enabled,
> kernel may hang.
Good point. Fixed in v2.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-07-16 2:05 ` Peng Fan
2021-07-16 12:47 ` Daniel Baluta
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