Re: [PATCH 4/5] arm64: dts: imx8qm: add node for VPU dsp

Laurentiu Mihalcea
2024-09-22T23:19:22Z

On 9/18/2024 9:57 PM, Frank Li wrote:
> On Wed, Sep 18, 2024 at 02:21:16PM -0400, Laurentiu Mihalcea wrote:
>> From: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
>>
>> Add DT node for i.MX8QM's DSP, which is found in
>> the VPU subsystem.
>>
>> Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
>> ---
>> arch/arm64/boot/dts/freescale/imx8qm.dtsi | 27 +++++++++++++++++++++++
> why not add a file imx8qm-ss-vpu.dtsi to keep consistent with others.

Don't see much value in doing so right now. It's just two extra nodes (should stay that way AFAICT).

>
> Frank
>
>> 1 file changed, 27 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/freescale/imx8qm.dtsi b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
>> index f8b577ebdbef..ae0165a44dcd 100644
>> --- a/arch/arm64/boot/dts/freescale/imx8qm.dtsi
>> +++ b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
>> @@ -581,6 +581,33 @@ mipi_pll_div2_clk: clock-controller-mipi-div2-pll {
>> clock-output-names = "mipi_pll_div2_clk";
>> };
>>
>> + vpu_subsys_dsp: bus@55000000 {
>> + compatible = "simple-bus";
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> + ranges = <0x55000000 0x0 0x55000000 0x1000000>;
>> +
>> + vpu_dsp: dsp@556e8000 {
>> + compatible = "fsl,imx8qm-hifi4";
>> + reg = <0x556e8000 0x88000>;
>> + clocks = <&clk_dummy>,
>> + <&clk_dummy>,
>> + <&clk_dummy>;
>> + clock-names = "ipg", "ocram", "core";
>> + power-domains = <&pd IMX_SC_R_MU_13B>,
>> + <&pd IMX_SC_R_DSP>,
>> + <&pd IMX_SC_R_DSP_RAM>,
>> + <&pd IMX_SC_R_IRQSTR_DSP>,
>> + <&pd IMX_SC_R_MU_2A>;
>> + mbox-names = "tx", "rx", "rxdb";
>> + mboxes = <&lsio_mu13 0 0>,
>> + <&lsio_mu13 1 0>,
>> + <&lsio_mu13 3 0>;
>> + firmware-name = "imx/dsp/hifi4.bin";
>> + status = "disabled";
>> + };
>> + };
>> +
>> /* sorted in register address */
>> #include "imx8-ss-cm41.dtsi"
>> #include "imx8-ss-audio.dtsi"
>> --
>> 2.34.1
>>