This adds dt bindings for the APU present in the MT8183. Signed-off-by: Alexandre Bailon <abailon@xxxxxxxxxxxx> --- .../bindings/remoteproc/mtk,apu.yaml | 121 ++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/mtk,apu.yaml diff --git a/Documentation/devicetree/bindings/remoteproc/mtk,apu.yaml b/Documentation/devicetree/bindings/remoteproc/mtk,apu.yaml new file mode 100644 index 000000000000..1d5fcc135617 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/mtk,apu.yaml @@ -0,0 +1,121 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 + +--- +$id: "http://devicetree.org/schemas/remoteproc/mtk,apu.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: MT8183 Vision Processor Unit (VPU) devices + +description: + This document defines the binding for the APU, a co-processor that could + offload the CPU for machine learning and neural network. + +maintainers: + - Alexandre Bailon <abailon@xxxxxxxxxxxx> + +properties: + compatible: + const: mediatek,mt8183-apu + + reg: + description: + Address ranges of the APU MMIO. + maxItems: 1 + + interrupts: + description: + The interrupt number used to receive the interrupts from the DSP. + maxItems: 1 + + clocks: + description: + "Clocks for co-processor (See: ../clock/clock-bindings.txt) + Three clocks are expected for AXI, IPU and JTAG. + The JTAG clock seems to be required to run the DSP, + even when JTAG is not in use." + maxItems: 3 + clock-names: + description: + The name of clocks, must be ipu, axi and jtag + items: + - const: ipu + - const: axi + - const: jtag + + iommu: + description: "IOMMU (See: ../iommu/iommu.txt)" + maxItems: 3 + + memory-region: + description: "Reserved memory (See: ../reserved-memory/reserved-memory.txt)" + maxItems: 1 + + power-domains: + description: "Power domain (see: ../power/power_domain.txt)" + maxItems: 1 + + pinctrl: + description: pinctrl handles, required to configure pins for JTAG. + maxItems: 2 + + pinctrl-names: + description: + pinctrl name, must be "default", "jtag". + "default" must configure the pins when JTAG is disabled. + "jtag" must configure the pins for JTAG operations. + items: + - const: default + - const: jtag + maxItems: 2 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - iommu + - memory-region + - power-domains + +examples: + - | + #include <dt-bindings/clock/mt8183-clk.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/memory/mt8183-larb-port.h> + #include <dt-bindings/power/mt8183-power.h> + + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + vpu_ram: vpu_ram@0x60000000 { + compatible = "shared-dma-pool"; + reg = <0 0x60000000 0 0x040000000>; + no-map; + linux,cma-default; + }; + }; + + vpu0: vpu@0x19100000 { + compatible = "mediatek,mt8183-apu"; + reg = <0 0x19180000 0 0x14000>; + reg-names = "mmio"; + interrupts = <GIC_SPI 292 IRQ_TYPE_LEVEL_LOW>; + + iommus = <&iommu M4U_PORT_IMG_IPUO>, + <&iommu M4U_PORT_IMG_IPU3O>, + <&iommu M4U_PORT_IMG_IPUI>; + + clocks = <&ipu_core0 CLK_IPU_CORE0_AXI>, + <&ipu_core0 CLK_IPU_CORE0_IPU>, + <&ipu_core0 CLK_IPU_CORE0_JTAG>; + + clock-names = "axi", "ipu", "jtag"; + + power-domains = <&scpsys MT8183_POWER_DOMAIN_VPU_CORE0>; + memory-region = <&vpu_ram>; + }; +... -- 2.26.2
