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Message-ID: <20210408142002.GA1409100@robh.at.kernel.org>
Date: Thu, 8 Apr 2021 09:20:02 -0500
From: Rob Herring <robh@...nel.org>
To: Krishna Manikandan <mkrishn@...eaurora.org>
Cc: dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, kalyan_t@...eaurora.org,
tanmay@...eaurora.org, abhinavk@...eaurora.org,
robdclark@...il.com, swboyd@...omium.org,
bjorn.andersson@...aro.org, vinod.koul@...aro.org,
dianders@...omium.org, khsieh@...eaurora.org, sean@...rly.run
Subject: Re: [PATCH v15 1/4] dt-bindings: msm: disp: add yaml schemas for DPU
bindings
On Mon, Apr 05, 2021 at 04:36:07PM +0530, Krishna Manikandan wrote:
> MSM Mobile Display Subsytem (MDSS) encapsulates sub-blocks
> like DPU display controller, DSI etc. Add YAML schema
> for DPU device tree bindings.
>
> Signed-off-by: Krishna Manikandan <mkrishn@...eaurora.org>
>
> Changes in v2:
> - Changed dpu to DPU (Sam Ravnborg)
> - Fixed indentation issues (Sam Ravnborg)
> - Added empty line between different properties (Sam Ravnborg)
> - Replaced reference txt files with their corresponding
> yaml files (Sam Ravnborg)
> - Modified the file to use "|" only when it is
> necessary (Sam Ravnborg)
>
> Changes in v3:
> - Corrected the license used (Rob Herring)
> - Added maxItems for properties (Rob Herring)
> - Dropped generic descriptions (Rob Herring)
> - Added ranges property (Rob Herring)
> - Corrected the indendation (Rob Herring)
> - Added additionalProperties (Rob Herring)
> - Split dsi file into two, one for dsi controller
> and another one for dsi phy per target (Rob Herring)
> - Corrected description for pinctrl-names (Rob Herring)
> - Corrected the examples used in yaml file (Rob Herring)
> - Delete dsi.txt and dpu.txt (Rob Herring)
>
> Changes in v4:
> - Move schema up by one level (Rob Herring)
> - Add patternProperties for mdp node (Rob Herring)
> - Corrected description of some properties (Rob Herring)
>
> Changes in v5:
> - Correct the indentation (Rob Herring)
> - Remove unnecessary description from properties (Rob Herring)
> - Correct the number of interconnect entries (Rob Herring)
> - Add interconnect names for sc7180 (Rob Herring)
> - Add description for ports (Rob Herring)
> - Remove common properties (Rob Herring)
> - Add unevalutatedProperties (Rob Herring)
> - Reference existing dsi controller yaml in the common
> dsi controller file (Rob Herring)
> - Correct the description of clock names to include only the
> clocks that are required (Rob Herring)
> - Remove properties which are already covered under the common
> binding (Rob Herring)
> - Add dsi phy supply nodes which are required for sc7180 and
> sdm845 targets (Rob Herring)
> - Add type ref for syscon-sfpb (Rob Herring)
>
> Changes in v6:
> - Fixed errors during dt_binding_check (Rob Herring)
> - Add maxItems for phys and phys-names (Rob Herring)
> - Use unevaluatedProperties wherever required (Rob Herring)
> - Removed interrupt controller from required properties for
> dsi controller (Rob Herring)
> - Add constraints for dsi-phy reg-names based on the compatible
> phy version (Rob Herring)
> - Add constraints for dsi-phy supply nodes based on the
> compatible phy version (Rob Herring)
>
> Changes in v7:
> - Add default value for qcom,mdss-mdp-transfer-time-us (Rob Herring)
> - Modify the schema for data-lanes (Rob Herring)
> - Split the phy schema into separate schemas based on
> the phy version (Rob Herring)
>
> Changes in v8:
> - Resolve merge conflicts with latest dsi.txt file
> - Include dp yaml change also in the same series
>
> Changes in v9:
> - Combine target specific dsi controller yaml files
> to a single yaml file (Rob Herring)
> - Combine target specific dsi phy yaml files into a
> single yaml file (Rob Herring)
> - Use unevaluatedProperties and additionalProperties
> wherever required
> - Remove duplicate properties from common yaml files
>
> Changes in v10:
> - Split the patch into separate patches for DPU, DSI and
> PHY (Stephen Boyd)
> - Drop unnecessary fullstop (Stephen Boyd)
> - Add newline whereever required (Stephen Boyd)
> - Add description for clock used (Stephen Boyd)
> - Modify the description for interconnect entries (Stephen Boyd)
> - Drop assigned clock entries as it a generic property (Stephen Boyd)
> - Correct the definition for interrupts (Stephen Boyd)
> - Drop clock names from required properties (Stephen Boyd)
> - Drop labels for display nodes from example (Stephen Boyd)
> - Drop flags from interrupts entries (Stephen Boyd)
>
> Changes in v11:
> - Drop maxItems for clocks (Stephen Boyd)
>
> Changes in v12:
> - Add description for register property (Stephen Boyd)
> - Add maxItems for interrupts (Stephen Boyd)
> - Add description for iommus property (Stephen Boyd)
> - Add description for interconnects (Stephen Boyd)
> - Change display node name to display_controller (Stephen Boyd)
>
> Changes in v13:
> - Add maxItems for reg property (Stephen Boyd)
> - Add ranges property in example (Stephen Boyd)
> - Modify description for iommus property (Stephen Boyd)
> - Add Dp bindings for ports in the same patch (Stephen Boyd)
> - Remove soc from examples and change address and size cells
> accordingly (Stephen Boyd)
> - Add reference for ports
>
> Changes in v14:
> - Modify title for SC7180 and SDM845 yaml files (Stephen Boyd)
> - Add required list for display-controller node (Stephen Boyd)
> - Rename mdss node name to display-subsytem (Stephen Boyd)
I know the DRM maintainers like revision history in the commit, but I
think it's pretty pointless in this case. It's *just* a conversion.
> ---
> .../bindings/display/msm/dpu-sc7180.yaml | 215 +++++++++++++++++++++
> .../bindings/display/msm/dpu-sdm845.yaml | 196 +++++++++++++++++++
> .../devicetree/bindings/display/msm/dpu.txt | 141 --------------
> 3 files changed, 411 insertions(+), 141 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/display/msm/dpu-sc7180.yaml
> create mode 100644 Documentation/devicetree/bindings/display/msm/dpu-sdm845.yaml
> delete mode 100644 Documentation/devicetree/bindings/display/msm/dpu.txt
>
> diff --git a/Documentation/devicetree/bindings/display/msm/dpu-sc7180.yaml b/Documentation/devicetree/bindings/display/msm/dpu-sc7180.yaml
> new file mode 100644
> index 0000000..36531a5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/msm/dpu-sc7180.yaml
> @@ -0,0 +1,215 @@
> +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/msm/dpu-sc7180.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Display DPU dt properties for SC7180 target
> +
> +maintainers:
> + - Krishna Manikandan <mkrishn@...eaurora.org>
> +
> +description: |
> + Device tree bindings for MSM Mobile Display Subsytem(MDSS) that encapsulates
> + sub-blocks like DPU display controller, DSI and DP interfaces etc. Device tree
> + bindings of MDSS and DPU are mentioned for SC7180 target.
> +
> +properties:
> + compatible:
> + items:
> + - const: qcom,sc7180-mdss
> +
> + reg:
> + maxItems: 1
> +
> + reg-names:
> + const: mdss
> +
> + power-domains:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: Display AHB clock from gcc
> + - description: Display AHB clock from dispcc
> + - description: Display core clock
> +
> + clock-names:
> + items:
> + - const: iface
> + - const: ahb
> + - const: core
> +
> + interrupts:
> + maxItems: 1
> +
> + interrupt-controller: true
> +
> + "#interrupt-cells":
> + const: 1
> +
> + iommus:
> + items:
> + - description: Phandle to apps_smmu node with SID mask for Hard-Fail port0
> +
> + ranges: true
> +
> + interconnects:
> + items:
> + - description: Interconnect path specifying the port ids for data bus
> +
> + interconnect-names:
> + const: mdp0-mem
> +
> +patternProperties:
> + "^display-controller@[0-9a-f]+$":
> + type: object
> + description: Node containing the properties of DPU.
> +
> + properties:
> + compatible:
> + items:
> + - const: qcom,sc7180-dpu
> +
> + reg:
> + items:
> + - description: Address offset and size for mdp register set
> + - description: Address offset and size for vbif register set
> +
> + reg-names:
> + items:
> + - const: mdp
> + - const: vbif
> +
> + clocks:
> + items:
> + - description: Display hf axi clock
> + - description: Display ahb clock
> + - description: Display rotator clock
> + - description: Display lut clock
> + - description: Display core clock
> + - description: Display vsync clock
> +
> + clock-names:
> + items:
> + - const: bus
> + - const: iface
> + - const: rot
> + - const: lut
> + - const: core
> + - const: vsync
> +
> + interrupts:
> + maxItems: 1
> +
> + ports:
> + $ref: /schemas/graph.yaml#/properties/port
s/port/ports/
> + type: object
Don't need this.
> + description: |
> + Contains the list of output ports from DPU device. These ports
> + connect to interfaces that are external to the DPU hardware,
> + such as DSI, DP etc. Each output port contains an endpoint that
> + describes how it is connected to an external interface.
> +
> + properties:
> + port@0:
> + type: object
Drop 'type' and add:
$ref: /schemas/graph.yaml#/properties/port
> + description: DPU_INTF1 (DSI1)
> +
> + port@1:
> + type: object
And here.
> + description: DPU_INTF2 (DSI2)
blank line
> + port@2:
> + type: object
And here.
> + description: DPU_INTF0 (DP)
> +
All the port nodes are optional?
> + required:
> + - compatible
> + - reg
> + - reg-names
> + - clocks
> + - interrupts
> + - ports
> +
> +required:
> + - compatible
> + - reg
> + - reg-names
> + - power-domains
> + - clocks
> + - interrupts
> + - interrupt-controller
> + - iommus
> + - ranges
> +
> +additionalProperties: true
This should be false.
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/qcom,dispcc-sc7180.h>
> + #include <dt-bindings/clock/qcom,gcc-sc7180.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/interconnect/qcom,sdm845.h>
> +
> + display-subsystem@...0000 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "qcom,sc7180-mdss";
> + reg = <0xae00000 0x1000>;
> + reg-names = "mdss";
> + power-domains = <&dispcc MDSS_GDSC>;
> + clocks = <&gcc GCC_DISP_AHB_CLK>,
> + <&dispcc DISP_CC_MDSS_AHB_CLK>,
> + <&dispcc DISP_CC_MDSS_MDP_CLK>;
> + clock-names = "iface", "ahb", "core";
> +
> + interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-controller;
> + #interrupt-cells = <1>;
> +
> + interconnects = <&mmss_noc MASTER_MDP0 &mc_virt SLAVE_EBI1>;
> + interconnect-names = "mdp0-mem";
> +
> + iommus = <&apps_smmu 0x800 0x2>;
> + ranges;
> +
> + display-controller@...1000 {
> + compatible = "qcom,sc7180-dpu";
> + reg = <0x0ae01000 0x8f000>,
> + <0x0aeb0000 0x2008>;
> +
> + reg-names = "mdp", "vbif";
> +
> + clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
> + <&dispcc DISP_CC_MDSS_AHB_CLK>,
> + <&dispcc DISP_CC_MDSS_ROT_CLK>,
> + <&dispcc DISP_CC_MDSS_MDP_LUT_CLK>,
> + <&dispcc DISP_CC_MDSS_MDP_CLK>,
> + <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> + clock-names = "bus", "iface", "rot", "lut", "core",
> + "vsync";
> +
> + interrupt-parent = <&mdss>;
> + interrupts = <0>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + dpu_intf1_out: endpoint {
> + remote-endpoint = <&dsi0_in>;
> + };
> + };
> +
> + port@2 {
> + reg = <2>;
> + dpu_intf0_out: endpoint {
> + remote-endpoint = <&dp_in>;
> + };
> + };
> + };
> + };
> + };
> +...
> diff --git a/Documentation/devicetree/bindings/display/msm/dpu-sdm845.yaml b/Documentation/devicetree/bindings/display/msm/dpu-sdm845.yaml
> new file mode 100644
> index 0000000..c744559
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/msm/dpu-sdm845.yaml
> @@ -0,0 +1,196 @@
> +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/msm/dpu-sdm845.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Display DPU dt properties for SDM845 target
> +
> +maintainers:
> + - Krishna Manikandan <mkrishn@...eaurora.org>
> +
> +description: |
> + Device tree bindings for MSM Mobile Display Subsytem(MDSS) that encapsulates
> + sub-blocks like DPU display controller, DSI and DP interfaces etc. Device tree
> + bindings of MDSS and DPU are mentioned for SDM845 target.
> +
> +properties:
> + compatible:
> + items:
> + - const: qcom,sdm845-mdss
> +
> + reg:
> + maxItems: 1
> +
> + reg-names:
> + const: mdss
> +
> + power-domains:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: Display AHB clock from gcc
> + - description: Display AXI clock
> + - description: Display core clock
> +
> + clock-names:
> + items:
> + - const: iface
> + - const: bus
> + - const: core
> +
> + interrupts:
> + maxItems: 1
> +
> + interrupt-controller: true
> +
> + "#interrupt-cells":
> + const: 1
> +
> + iommus:
> + items:
> + - description: Phandle to apps_smmu node with SID mask for Hard-Fail port0
> + - description: Phandle to apps_smmu node with SID mask for Hard-Fail port1
> +
> + ranges: true
> +
> +patternProperties:
> + "^display-controller@[0-9a-f]+$":
> + type: object
> + description: Node containing the properties of DPU.
> +
> + properties:
> + compatible:
> + items:
> + - const: qcom,sdm845-dpu
> +
> + reg:
> + items:
> + - description: Address offset and size for mdp register set
> + - description: Address offset and size for vbif register set
> +
> + reg-names:
> + items:
> + - const: mdp
> + - const: vbif
> +
> + clocks:
> + items:
> + - description: Display ahb clock
> + - description: Display axi clock
> + - description: Display core clock
> + - description: Display vsync clock
> +
> + clock-names:
> + items:
> + - const: iface
> + - const: bus
> + - const: core
> + - const: vsync
> +
> + interrupts:
> + maxItems: 1
> +
> + ports:
Same issues in this one...
> + $ref: /schemas/graph.yaml#/properties/port
> + type: object
> + description: |
> + Contains the list of output ports from DPU device. These ports
> + connect to interfaces that are external to the DPU hardware,
> + such as DSI, DP etc. Each output port contains an endpoint that
> + describes how it is connected to an external interface.
> +
> + properties:
> + port@0:
> + type: object
> + description: DPU_INTF1 (DSI1)
> +
> + port@1:
> + type: object
> + description: DPU_INTF2 (DSI2)
> +
> + required:
> + - compatible
> + - reg
> + - reg-names
> + - clocks
> + - interrupts
> + - ports
> +
> +required:
> + - compatible
> + - reg
> + - reg-names
> + - power-domains
> + - clocks
> + - interrupts
> + - interrupt-controller
> + - iommus
> + - ranges
> +
> +additionalProperties: true
false
> +
> +examples:
> +- |
> + #include <dt-bindings/clock/qcom,dispcc-sdm845.h>
> + #include <dt-bindings/clock/qcom,gcc-sdm845.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + display-subsystem@...0000 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "qcom,sdm845-mdss";
> + reg = <0x0ae00000 0x1000>;
> + reg-names = "mdss";
> + power-domains = <&dispcc MDSS_GDSC>;
> +
> + clocks = <&gcc GCC_DISP_AHB_CLK>,
> + <&gcc GCC_DISP_AXI_CLK>,
> + <&dispcc DISP_CC_MDSS_MDP_CLK>;
> + clock-names = "iface", "bus", "core";
> +
> + interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-controller;
> + #interrupt-cells = <1>;
> +
> + iommus = <&apps_smmu 0x880 0x8>,
> + <&apps_smmu 0xc80 0x8>;
> + ranges;
> +
> + display-controller@...1000 {
> + compatible = "qcom,sdm845-dpu";
> + reg = <0x0ae01000 0x8f000>,
> + <0x0aeb0000 0x2008>;
> + reg-names = "mdp", "vbif";
> +
> + clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
> + <&dispcc DISP_CC_MDSS_AXI_CLK>,
> + <&dispcc DISP_CC_MDSS_MDP_CLK>,
> + <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> + clock-names = "iface", "bus", "core", "vsync";
> +
> + interrupt-parent = <&mdss>;
> + interrupts = <0>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + dpu_intf1_out: endpoint {
> + remote-endpoint = <&dsi0_in>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + dpu_intf2_out: endpoint {
> + remote-endpoint = <&dsi1_in>;
> + };
> + };
> + };
> + };
> + };
> +...
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