From: "yc.hung" <[email protected]>
This describes the mt8195 DSP device tree node.
Signed-off-by: yc.hung <[email protected]>
---
Changes since v4:
- remove patch 1 with clocks as it will be reviewed and merged to SOF tree.
https://github.com/thesofproject/linux/pull/3237
- refine DT file binding files with Rob's comments.
.../bindings/dsp/mtk,mt8195-dsp.yaml | 142 ++++++++++++++++++
1 file changed, 142 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml
diff --git a/Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml b/Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml
new file mode 100644
index 000000000000..aeeb7af69625
--- /dev/null
+++ b/Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml
@@ -0,0 +1,142 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dsp/mtk,mt8195-dsp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek mt8195 DSP core
+
+maintainers:
+ - YC Hung <[email protected]>
+
+description: |
+ Some boards from mt8195 contain a DSP core used for
+ advanced pre- and post- audio processing.
+properties:
+ compatible:
+ const: mediatek,mt8195-dsp
+
+ reg:
+ items:
+ - description: Address and size of the DSP Cfg registers
+ - description: Address and size of the DSP SRAM
+
+ reg-names:
+ items:
+ - const: cfg
+ - const: sram
+
+ interrupts:
+ items:
+ - description: watchdog interrupt
+
+ interrupt-names:
+ items:
+ - const: wdt
+
+ clocks:
+ items:
+ - description: mux for audio dsp clock
+ - description: 26M clock
+ - description: mux for audio dsp local bus
+ - description: default audio dsp local bus clock source
+ - description: clock gate for audio dsp clock
+ - description: mux for audio dsp access external bus
+
+ clock-names:
+ items:
+ - const: adsp_sel
+ - const: clk26m_ck
+ - const: audio_local_bus
+ - const: mainpll_d7_d2
+ - const: scp_adsp_audiodsp
+ - const: audio_h
+
+ power-domains:
+ maxItems: 1
+
+ mboxes:
+ items:
+ - description: a mailbox is ised for ipc reply between host and audio DSP.
+ - description: a mailbox is ised for ipc reuqest between host and audio DSP.
+
+ mbox-names:
+ items:
+ - const: mbox0
+ - const: mbox1
+
+ memory-region:
+ items:
+ - description: A phandle to a reserved memory region is used for dma buffer between host and DSP.
+ - description: A phandle to a reserved memory region is used for DSP system memory.
+
+ sound:
+ description:
+ Sound subnode includes ASoC platform, DPTx codec node, and
+ HDMI codec node.
+
+ type: object
+
+ properties:
+ mediatek,platform:
+ $ref: "/schemas/types.yaml#/definitions/phandle"
+ description: The phandle of MT8195 ASoC platform.
+
+ mediatek,dptx-codec:
+ $ref: "/schemas/types.yaml#/definitions/phandle"
+ description: The phandle of MT8195 Display Port Tx codec node.
+
+ mediatek,hdmi-codec:
+ $ref: "/schemas/types.yaml#/definitions/phandle"
+ description: The phandle of MT8195 HDMI codec node.
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - interrupt-names
+ - clocks
+ - clock-names
+ - memory-region
+ - power-domains
+ - mbox-names
+ - mboxes
+ - sound
+
+additionalProperties: true
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ adsp: dsp@10803000 {
+ compatible = "mediatek,mt8195-dsp";
+ reg = <0x10803000 0x1000>,
+ <0x10840000 0x40000>;
+ reg-names = "cfg", "sram";
+ interrupts = <GIC_SPI 694 IRQ_TYPE_LEVEL_HIGH 0>;
+ interrupt-names = "wdt";
+ clocks = <&topckgen 10>, //CLK_TOP_ADSP
+ <&clk26m>,
+ <&topckgen 107>, //CLK_TOP_AUDIO_LOCAL_BUS
+ <&topckgen 136>, //CLK_TOP_MAINPLL_D7_D2
+ <&scp_adsp 0>, //CLK_SCP_ADSP_AUDIODSP
+ <&topckgen 34>; //CLK_TOP_AUDIO_H
+ clock-names = "adsp_sel",
+ "clk26m_ck",
+ "audio_local_bus",
+ "mainpll_d7_d2",
+ "scp_adsp_audiodsp",
+ "audio_h";
+ memory-region = <&adsp_dma_mem_reserved>,
+ <&adsp_mem_reserved>;
+ power-domains = <&spm 6>; //MT8195_POWER_DOMAIN_ADSP
+ mbox-names = "mbox0", "mbox1";
+ mboxes = <&adsp_mailbox 0>, <&adsp_mailbox 1>;
+ sound {
+ mediatek,dptx-codec = <&dp_tx>;
+ mediatek,hdmi-codec = <&hdmi0>;
+ mediatek,platform = <&afe>;
+ };
+ };
--
2.18.0
On Wed, Nov 03, 2021 at 06:26:08PM +0800, YC Hung wrote:
> From: "yc.hung" <[email protected]>
>
> This describes the mt8195 DSP device tree node.
>
> Signed-off-by: yc.hung <[email protected]>
> ---
> Changes since v4:
> - remove patch 1 with clocks as it will be reviewed and merged to SOF tree.
> https://github.com/thesofproject/linux/pull/3237
> - refine DT file binding files with Rob's comments.
>
> .../bindings/dsp/mtk,mt8195-dsp.yaml | 142 ++++++++++++++++++
> 1 file changed, 142 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml
>
> diff --git a/Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml b/Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml
> new file mode 100644
> index 000000000000..aeeb7af69625
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dsp/mtk,mt8195-dsp.yaml
> @@ -0,0 +1,142 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/dsp/mtk,mt8195-dsp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek mt8195 DSP core
> +
> +maintainers:
> + - YC Hung <[email protected]>
> +
> +description: |
> + Some boards from mt8195 contain a DSP core used for
> + advanced pre- and post- audio processing.
> +properties:
> + compatible:
> + const: mediatek,mt8195-dsp
> +
> + reg:
> + items:
> + - description: Address and size of the DSP Cfg registers
> + - description: Address and size of the DSP SRAM
> +
> + reg-names:
> + items:
> + - const: cfg
> + - const: sram
> +
> + interrupts:
> + items:
> + - description: watchdog interrupt
> +
> + interrupt-names:
> + items:
> + - const: wdt
> +
> + clocks:
> + items:
> + - description: mux for audio dsp clock
> + - description: 26M clock
> + - description: mux for audio dsp local bus
> + - description: default audio dsp local bus clock source
> + - description: clock gate for audio dsp clock
> + - description: mux for audio dsp access external bus
> +
> + clock-names:
> + items:
> + - const: adsp_sel
> + - const: clk26m_ck
> + - const: audio_local_bus
> + - const: mainpll_d7_d2
> + - const: scp_adsp_audiodsp
> + - const: audio_h
> +
> + power-domains:
> + maxItems: 1
> +
> + mboxes:
> + items:
> + - description: a mailbox is ised for ipc reply between host and audio DSP.
> + - description: a mailbox is ised for ipc reuqest between host and audio DSP.
> +
> + mbox-names:
> + items:
> + - const: mbox0
> + - const: mbox1
> +
> + memory-region:
> + items:
> + - description: A phandle to a reserved memory region is used for dma buffer between host and DSP.
> + - description: A phandle to a reserved memory region is used for DSP system memory.
> +
> + sound:
> + description:
> + Sound subnode includes ASoC platform, DPTx codec node, and
> + HDMI codec node.
> +
> + type: object
Same question as v4, why do you need a sub-node here. Just move these
properties up a level.
> +
> + properties:
> + mediatek,platform:
> + $ref: "/schemas/types.yaml#/definitions/phandle"
> + description: The phandle of MT8195 ASoC platform.
> +
> + mediatek,dptx-codec:
> + $ref: "/schemas/types.yaml#/definitions/phandle"
> + description: The phandle of MT8195 Display Port Tx codec node.
> +
> + mediatek,hdmi-codec:
> + $ref: "/schemas/types.yaml#/definitions/phandle"
> + description: The phandle of MT8195 HDMI codec node.