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Date: Mon, 11 Oct 2021 18:42:11 -0500
From: Rob Herring <robh@...nel.org>
To: David Heidelberg <david@...t.cz>
Cc: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>, linux-arm-msm@...r.kernel.org,
dri-devel@...ts.freedesktop.org, freedreno@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
~okias/devicetree@...ts.sr.ht,
~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH] [v5] dt-bindings: drm/msm/gpu: convert to YAML
On Sun, Oct 10, 2021 at 10:42:45AM +0200, David Heidelberg wrote:
> Conversion of text binding for Adreno GPU to the YAML format.
Blank line needed.
> Signed-off-by: David Heidelberg <david@...t.cz>
> ---
> v2:
> - added compatbile description from Rob Clark
> - dropped reg description
> - reg numbers increased to 3 (since we also have uncommon cx_dbgc)
> - specified interconnect-names items range
> - defined zap-shader as an object and added it's properties
> - enforce 0 clocks for Andreno >= 6xx since it's defined in GMU node
>
> v3:
> - fix patterns (add backslash before dot)
> - add additional clocks
> - adreno@ -> gpu@
> - add few const and change enum to anyOf
> - added clock & clock-names placeholder in non-conditional part
> (description)
>
> v4:
> - clock & clock-names - true,false instead maxItems
> - impl. #stream-id-cells, nvmem-cell-names, nvmem-cells
> - dropped requirement on firmware-name in zap_shader
>
> v5:
> - maxOtems -> maxItems typo fix
> .../devicetree/bindings/display/msm/gpu.txt | 157 ---------
> .../devicetree/bindings/display/msm/gpu.yaml | 302 ++++++++++++++++++
> 2 files changed, 302 insertions(+), 157 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/display/msm/gpu.txt
> create mode 100644 Documentation/devicetree/bindings/display/msm/gpu.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/msm/gpu.txt b/Documentation/devicetree/bindings/display/msm/gpu.txt
> deleted file mode 100644
> index 090dcb3fc34d..000000000000
> --- a/Documentation/devicetree/bindings/display/msm/gpu.txt
> +++ /dev/null
> @@ -1,157 +0,0 @@
> -Qualcomm adreno/snapdragon GPU
> -
> -Required properties:
> -- compatible: "qcom,adreno-XYZ.W", "qcom,adreno" or
> - "amd,imageon-XYZ.W", "amd,imageon"
> - for example: "qcom,adreno-306.0", "qcom,adreno"
> - Note that you need to list the less specific "qcom,adreno" (since this
> - is what the device is matched on), in addition to the more specific
> - with the chip-id.
> - If "amd,imageon" is used, there should be no top level msm device.
> -- reg: Physical base address and length of the controller's registers.
> -- interrupts: The interrupt signal from the gpu.
> -- clocks: device clocks (if applicable)
> - See ../clocks/clock-bindings.txt for details.
> -- clock-names: the following clocks are required by a3xx, a4xx and a5xx
> - cores:
> - * "core"
> - * "iface"
> - * "mem_iface"
> - For GMU attached devices the GPU clocks are not used and are not required. The
> - following devices should not list clocks:
> - - qcom,adreno-630.2
> -- iommus: optional phandle to an adreno iommu instance
> -- operating-points-v2: optional phandle to the OPP operating points
> -- interconnects: optional phandle to an interconnect provider. See
> - ../interconnect/interconnect.txt for details. Some A3xx and all A4xx platforms
> - will have two paths; all others will have one path.
> -- interconnect-names: The names of the interconnect paths that correspond to the
> - interconnects property. Values must be gfx-mem and ocmem.
> -- qcom,gmu: For GMU attached devices a phandle to the GMU device that will
> - control the power for the GPU. Applicable targets:
> - - qcom,adreno-630.2
> -- zap-shader: For a5xx and a6xx devices this node contains a memory-region that
> - points to reserved memory to store the zap shader that can be used to help
> - bring the GPU out of secure mode.
> -- firmware-name: optional property of the 'zap-shader' node, listing the
> - relative path of the device specific zap firmware.
> -- sram: phandle to the On Chip Memory (OCMEM) that's present on some a3xx and
> - a4xx Snapdragon SoCs. See
> - Documentation/devicetree/bindings/sram/qcom,ocmem.yaml.
> -
> -Optional properties:
> -- #cooling-cells: The value must be 2. For details, please refer
> - Documentation/devicetree/bindings/thermal/thermal-cooling-devices.yaml.
> -
> -Example 3xx/4xx:
> -
> -/ {
> - ...
> -
> - gpu: adreno@...00000 {
> - compatible = "qcom,adreno-330.2",
> - "qcom,adreno";
> - reg = <0xfdb00000 0x10000>;
> - reg-names = "kgsl_3d0_reg_memory";
> - interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
> - interrupt-names = "kgsl_3d0_irq";
> - clock-names = "core",
> - "iface",
> - "mem_iface";
> - clocks = <&mmcc OXILI_GFX3D_CLK>,
> - <&mmcc OXILICX_AHB_CLK>,
> - <&mmcc OXILICX_AXI_CLK>;
> - sram = <&gpu_sram>;
> - power-domains = <&mmcc OXILICX_GDSC>;
> - operating-points-v2 = <&gpu_opp_table>;
> - iommus = <&gpu_iommu 0>;
> - #cooling-cells = <2>;
> - };
> -
> - gpu_sram: ocmem@...00000 {
> - compatible = "qcom,msm8974-ocmem";
> -
> - reg = <0xfdd00000 0x2000>,
> - <0xfec00000 0x180000>;
> - reg-names = "ctrl",
> - "mem";
> -
> - clocks = <&rpmcc RPM_SMD_OCMEMGX_CLK>,
> - <&mmcc OCMEMCX_OCMEMNOC_CLK>;
> - clock-names = "core",
> - "iface";
> -
> - #address-cells = <1>;
> - #size-cells = <1>;
> -
> - gpu_sram: gpu-sram@0 {
> - reg = <0x0 0x100000>;
> - ranges = <0 0 0xfec00000 0x100000>;
> - };
> - };
> -};
> -
> -Example a6xx (with GMU):
> -
> -/ {
> - ...
> -
> - gpu@...0000 {
> - compatible = "qcom,adreno-630.2", "qcom,adreno";
> - #stream-id-cells = <16>;
> -
> - reg = <0x5000000 0x40000>, <0x509e000 0x10>;
> - reg-names = "kgsl_3d0_reg_memory", "cx_mem";
> -
> - #cooling-cells = <2>;
> -
> - /*
> - * Look ma, no clocks! The GPU clocks and power are
> - * controlled entirely by the GMU
> - */
> -
> - interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH>;
> -
> - iommus = <&adreno_smmu 0>;
> -
> - operating-points-v2 = <&gpu_opp_table>;
> -
> - interconnects = <&rsc_hlos MASTER_GFX3D &rsc_hlos SLAVE_EBI1>;
> - interconnect-names = "gfx-mem";
> -
> - gpu_opp_table: opp-table {
> - compatible = "operating-points-v2";
> -
> - opp-430000000 {
> - opp-hz = /bits/ 64 <430000000>;
> - opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
> - opp-peak-kBps = <5412000>;
> - };
> -
> - opp-355000000 {
> - opp-hz = /bits/ 64 <355000000>;
> - opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
> - opp-peak-kBps = <3072000>;
> - };
> -
> - opp-267000000 {
> - opp-hz = /bits/ 64 <267000000>;
> - opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> - opp-peak-kBps = <3072000>;
> - };
> -
> - opp-180000000 {
> - opp-hz = /bits/ 64 <180000000>;
> - opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
> - opp-peak-kBps = <1804000>;
> - };
> - };
> -
> - qcom,gmu = <&gmu>;
> -
> - zap-shader {
> - memory-region = <&zap_shader_region>;
> - firmware-name = "qcom/LENOVO/81JL/qcdxkmsuc850.mbn"
> - };
> - };
> -};
> diff --git a/Documentation/devicetree/bindings/display/msm/gpu.yaml b/Documentation/devicetree/bindings/display/msm/gpu.yaml
> new file mode 100644
> index 000000000000..544e7568a35e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/msm/gpu.yaml
> @@ -0,0 +1,302 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +
> +$id: "http://devicetree.org/schemas/display/msm/gpu.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Devicetree bindings for the Adreno or Snapdragon GPUs
> +
> +maintainers:
> + - Rob Clark <robdclark@...il.com>
> +
> +properties:
> + compatible:
> + oneOf:
> + - description: |
> + The driver is parsing the compat string for Adreno to
> + figure out the gpu-id and patch level.
> + items:
> + - pattern: '^qcom,adreno-[3-6][0-9][0-9]\.[0-9]$'
> + - const: qcom,adreno
> + - description: |
> + The driver is parsing the compat string for Imageon to
> + figure out the gpu-id and patch level.
> + items:
> + - pattern: '^amd,imageon-200\.[0-1]$'
> + - const: amd,imageon
> +
> + clocks: true
> +
> + clock-names: true
> +
> + reg:
> + minItems: 1
> + maxItems: 3
> +
> + reg-names:
> + minItems: 1
> + maxItems: 3
> + items:
> + enum:
> + - kgsl_3d0_reg_memory
> + - cx_mem
> + - cx_dbgc
Based on the in tree dts files, can't you define the order:
items:
- const: kgsl_3d0_reg_memory
- const: cx_mem
- const: cx_dbgc
> +
> + interrupts:
> + maxItems: 1
> +
> + interrupt-names:
> + maxItems: 1
> +
> + interconnects:
> + minItems: 1
> + maxItems: 2
> + description: |
> + Optional phandle to an interconnect provider. See
> + ../interconnect/interconnect.txt for details.
Drop generic description.
> + Some A3xx and all A4xx platforms will have two paths;
> + all others will have one path.
> +
> + interconnect-names:
> + minItems: 1
> + maxItems: 2
> + items:
> + enum:
> + - gfx-mem
> + - ocmem
Order?
> + description: |
> + the names of the interconnect paths that correspond to
> + the interconnects property
Drop. That's every 'interconnect-names'.
> +
> + iommus:
> + maxItems: 1
> +
> + sram:
> + $ref: /schemas/types.yaml#/definitions/phandle-array
> + minItems: 1
> + maxItems: 4
> + description: |
> + phandles to one or more reserved on-chip SRAM regions.
> + phandle to the On Chip Memory (OCMEM) that's present on some a3xx and
> + a4xx Snapdragon SoCs. See
> + Documentation/devicetree/bindings/sram/qcom,ocmem.yaml
> +
> + operating-points-v2: true
> + opp-table: true
type: object
> +
> + power-domains:
> + maxItems: 1
> +
> + zap-shader:
> + type: object
> + description: |
> + For a5xx and a6xx devices this node contains a memory-region that
> + points to reserved memory to store the zap shader that can be used to
> + help bring the GPU out of secure mode.
> + properties:
> + memory-region:
> + $ref: /schemas/types.yaml#/definitions/phandle
> +
> + firmware-name:
> + description: |
> + Default name of the firmware to load to the remote processor.
> +
> + "#cooling-cells":
> + const: 2
> +
> + "#stream-id-cells":
Not documented before. Downstream IOMMU binding??
> + const: 16
> +
> + nvmem-cell-names:
> + maxItems: 1
> +
> + nvmem-cells:
> + description: efuse registers
> + maxItems: 1
> +
> + qcom,gmu:
> + $ref: /schemas/types.yaml#/definitions/phandle
> + description: |
> + For GMU attached devices a phandle to the GMU device that will
> + control the power for the GPU.
> +
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> +
> +additionalProperties: false
> +
> +allOf:
> + - if:
> + properties:
> + compatible:
> + contains:
> + pattern: '^qcom,adreno-[3-5][0-9][0-9]\.[0-9]$'
> +
> + then:
> + properties:
> + clocks:
> + minItems: 2
> + maxItems: 7
> +
> + clock-names:
> + items:
> + anyOf:
> + - const: core
> + description: GPU Core clock
> + - const: iface
> + description: GPU Interface clock
> + - const: mem
> + description: GPU Memory clock
> + - const: mem_iface
> + description: GPU Memory Interface clock
> + - const: alt_mem_iface
> + description: GPU Alternative Memory Interface clock
> + - const: gfx3d
> + description: GPU 3D engine clock
> + - const: rbbmtimer
> + description: GPU RBBM Timer for Adreno 5xx series
> + minItems: 2
> + maxItems: 7
> +
> + required:
> + - clocks
> + - clock-names
> + - if:
> + properties:
> + compatible:
> + contains:
> + pattern: '^qcom,adreno-6[0-9][0-9]\.[0-9]$'
> +
> + then: # Since Adreno 6xx series clocks should be defined in GMU
> + properties:
> + clocks: false
> + clock-names: false
> +
> +examples:
> + - |
> +
> + // Example a3xx/4xx:
> +
> + #include <dt-bindings/clock/qcom,mmcc-msm8974.h>
> + #include <dt-bindings/clock/qcom,rpmcc.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + gpu: gpu@...00000 {
> + compatible = "qcom,adreno-330.2", "qcom,adreno";
> +
> + reg = <0xfdb00000 0x10000>;
> + reg-names = "kgsl_3d0_reg_memory";
> +
> + clock-names = "core", "iface", "mem_iface";
> + clocks = <&mmcc OXILI_GFX3D_CLK>,
> + <&mmcc OXILICX_AHB_CLK>,
> + <&mmcc OXILICX_AXI_CLK>;
> +
> + interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "kgsl_3d0_irq";
> +
> + sram = <&gpu_sram>;
> + power-domains = <&mmcc OXILICX_GDSC>;
> + operating-points-v2 = <&gpu_opp_table>;
> + iommus = <&gpu_iommu 0>;
> + #cooling-cells = <2>;
> + };
> +
> + ocmem@...00000 {
> + compatible = "qcom,msm8974-ocmem";
> +
> + reg = <0xfdd00000 0x2000>,
> + <0xfec00000 0x180000>;
> + reg-names = "ctrl", "mem";
> +
> + clocks = <&rpmcc RPM_SMD_OCMEMGX_CLK>,
> + <&mmcc OCMEMCX_OCMEMNOC_CLK>;
> + clock-names = "core", "iface";
> +
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0 0xfec00000 0x100000>;
> +
> + gpu_sram: gpu-sram@0 {
> + reg = <0x0 0x100000>;
> + };
> + };
> + - |
> +
> + // Example a6xx (with GMU):
> +
> + #include <dt-bindings/clock/qcom,gpucc-sdm845.h>
> + #include <dt-bindings/clock/qcom,gcc-sdm845.h>
> + #include <dt-bindings/power/qcom-rpmpd.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/interconnect/qcom,sdm845.h>
> +
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + zap_shader_region: gpu@...00000 {
> + compatible = "shared-dma-pool";
> + reg = <0x0 0x90b00000 0x0 0xa00000>;
> + no-map;
> + };
> + };
> +
> + gpu@...0000 {
> + compatible = "qcom,adreno-630.2", "qcom,adreno";
> +
> + reg = <0x5000000 0x40000>, <0x509e000 0x10>;
> + reg-names = "kgsl_3d0_reg_memory", "cx_mem";
> +
> + #cooling-cells = <2>;
> +
> + interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH>;
> +
> + iommus = <&adreno_smmu 0>;
> +
> + operating-points-v2 = <&gpu_opp_table>;
> +
> + interconnects = <&rsc_hlos MASTER_GFX3D &rsc_hlos SLAVE_EBI1>;
> + interconnect-names = "gfx-mem";
> +
> + qcom,gmu = <&gmu>;
> +
> + gpu_opp_table: opp-table {
> + compatible = "operating-points-v2";
> +
> + opp-430000000 {
> + opp-hz = /bits/ 64 <430000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
> + opp-peak-kBps = <5412000>;
> + };
> +
> + opp-355000000 {
> + opp-hz = /bits/ 64 <355000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
> + opp-peak-kBps = <3072000>;
> + };
> +
> + opp-267000000 {
> + opp-hz = /bits/ 64 <267000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> + opp-peak-kBps = <3072000>;
> + };
> +
> + opp-180000000 {
> + opp-hz = /bits/ 64 <180000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
> + opp-peak-kBps = <1804000>;
> + };
> + };
> +
> + zap-shader {
> + memory-region = <&zap_shader_region>;
> + firmware-name = "qcom/LENOVO/81JL/qcdxkmsuc850.mbn";
> + };
> + };
> --
> 2.33.0
>
>
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