On Tue, May 18, 2021 at 03:33:43PM +0530, Krishna Manikandan wrote: > Add YAML schema for the device tree bindings for DSI > > Signed-off-by: Krishna Manikandan <mkrishn@xxxxxxxxxxxxxx> > > Changes in v1: > - Separate dsi controller bindings to a separate patch (Stephen Boyd) > - Merge dsi-common-controller.yaml and dsi-controller-main.yaml to > a single file (Stephen Boyd) > - Drop supply entries and definitions from properties (Stephen Boyd) > - Modify phy-names property for dsi controller (Stephen Boyd) > - Remove boolean from description (Stephen Boyd) > - Drop pinctrl properties as they are standard entries (Stephen Boyd) > - Modify the description for ports property and keep the reference > to the generic binding where this is defined (Stephen Boyd) > - Add description to clock names (Stephen Boyd) > - Correct the indendation (Stephen Boyd) > - Drop the label for display dt nodes and correct the node > name (Stephen Boyd) > > Changes in v2: > - Drop maxItems for clock (Stephen Boyd) > - Drop qcom,mdss-mdp-transfer-time-us as it is not used in upstream > dt file (Stephen Boyd) > - Keep child node directly under soc node (Stephen Boyd) > - Drop qcom,sync-dual-dsi as it is not used in upstream dt > > Changes in v3: > - Add description for register property (Stephen Boyd) > > Changes in v4: > - Add maxItems for phys property (Stephen Boyd) > - Add maxItems for reg property (Stephen Boyd) > - Add reference for data-lanes property (Stephen Boyd) > - Remove soc from example (Stephen Boyd) > > Changes in v5: > - Modify title and description (Stephen Boyd) > - Add required properties for ports node (Stephen Boyd) > - Add data-lanes in the example (Stephen Boyd) > - Drop qcom,master-dsi property (Stephen Boyd) > > Changes in v6: > - Add required properties for port@0, port@1 and corresponding > endpoints (Stephen Boyd) > - Add address-cells and size-cells for ports (Stephen Boyd) > - Use additionalProperties instead of unevaluatedProperties (Stephen Boyd) > > Changes in v7: > - Add reference for ports and data-lanes (Rob Herring) > - Add maxItems and minItems for data-lanes (Rob Herring) > --- > .../bindings/display/msm/dsi-controller-main.yaml | 209 +++++++++++++++++ > .../devicetree/bindings/display/msm/dsi.txt | 249 --------------------- > 2 files changed, 209 insertions(+), 249 deletions(-) > create mode 100644 Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml > delete mode 100644 Documentation/devicetree/bindings/display/msm/dsi.txt > > diff --git a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml > new file mode 100644 > index 0000000..80f5218 > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml > @@ -0,0 +1,209 @@ > +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/display/msm/dsi-controller-main.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Qualcomm Display DSI controller > + > +maintainers: > + - Krishna Manikandan <mkrishn@xxxxxxxxxxxxxx> > + > +allOf: > + - $ref: "../dsi-controller.yaml#" > + > +properties: > + compatible: > + items: > + - const: qcom,mdss-dsi-ctrl > + > + reg: > + maxItems: 1 > + > + reg-names: > + const: dsi_ctrl > + > + interrupts: > + maxItems: 1 > + > + clocks: > + items: > + - description: Display byte clock > + - description: Display byte interface clock > + - description: Display pixel clock > + - description: Display escape clock > + - description: Display AHB clock > + - description: Display AXI clock > + > + clock-names: > + items: > + - const: byte > + - const: byte_intf > + - const: pixel > + - const: core > + - const: iface > + - const: bus > + > + phys: > + maxItems: 1 > + > + phy-names: > + const: dsi > + > + "#address-cells": true > + > + "#size-cells": true > + > + syscon-sfpb: > + description: A phandle to mmss_sfpb syscon node (only for DSIv2). > + $ref: "/schemas/types.yaml#/definitions/phandle" > + > + qcom,dual-dsi-mode: > + type: boolean > + description: | > + Indicates if the DSI controller is driving a panel which needs > + 2 DSI links. > + > + power-domains: > + maxItems: 1 > + > + operating-points-v2: true > + > + ports: > + $ref: "/schemas/graph.yaml#/properties/ports" > + description: | > + Contains DSI controller input and output ports as children, each > + containing one endpoint subnode. > + > + properties: > + port@0: > + $ref: "/schemas/graph.yaml#/properties/port" > + description: | > + Input endpoints of the controller. > + > + properties: > + reg: > + const: 0 You can drop 'reg'. > + > + endpoint: > + type: object > + properties: > + remote-endpoint: true Don't need this. > + data-lanes: > + $ref: "../../media/video-interfaces.yaml" This is not where the $ref goes. Please look at other users. > + description: | > + This describes how the physical DSI data lanes are mapped > + to the logical lanes on the given platform. The value contained in > + index n describes what physical lane is mapped to the logical lane n > + (DATAn, where n lies between 0 and 3). The clock lane position is fixed > + and can't be changed. Hence, they aren't a part of the DT bindings. Don't redescribe common properties. If you have something special about this device, then say it. > + maxItems: 4 > + minItems: 4 > + items: > + enum: [ 0, 1, 2, 3 ] > + > + required: > + - reg > + - endpoint Drop. Already covered by the common schema. > + > + port@1: > + $ref: "/schemas/graph.yaml#/properties/port" > + description: | > + Output endpoints of the controller. > + properties: > + reg: > + const: 1 > + > + endpoint: > + type: object Needs a $ref to video-interfaces.yaml. > + properties: > + remote-endpoint: true > + data-lanes: > + maxItems: 4 > + minItems: 4 > + items: > + enum: [ 0, 1, 2, 3 ] > + > + required: > + - reg > + - endpoint Drop > + > + required: > + - port@0 > + - port@1 > + - "#address-cells" > + - "#size-cells" Last 2 are covered by the common schema. > + > +required: > + - compatible > + - reg > + - reg-names > + - interrupts > + - clocks > + - clock-names > + - phys > + - phy-names > + - power-domains > + - operating-points-v2 > + - ports > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/clock/qcom,dispcc-sdm845.h> > + #include <dt-bindings/clock/qcom,gcc-sdm845.h> > + #include <dt-bindings/power/qcom-rpmpd.h> > + > + dsi@ae94000 { > + compatible = "qcom,mdss-dsi-ctrl"; > + reg = <0x0ae94000 0x400>; > + reg-names = "dsi_ctrl"; > + > + #address-cells = <1>; > + #size-cells = <0>; > + > + interrupt-parent = <&mdss>; > + interrupts = <4>; > + > + clocks = <&dispcc DISP_CC_MDSS_BYTE0_CLK>, > + <&dispcc DISP_CC_MDSS_BYTE0_INTF_CLK>, > + <&dispcc DISP_CC_MDSS_PCLK0_CLK>, > + <&dispcc DISP_CC_MDSS_ESC0_CLK>, > + <&dispcc DISP_CC_MDSS_AHB_CLK>, > + <&dispcc DISP_CC_MDSS_AXI_CLK>; > + clock-names = "byte", > + "byte_intf", > + "pixel", > + "core", > + "iface", > + "bus"; > + > + phys = <&dsi0_phy>; > + phy-names = "dsi"; > + > + power-domains = <&rpmhpd SC7180_CX>; > + operating-points-v2 = <&dsi_opp_table>; > + > + ports { > + #address-cells = <1>; > + #size-cells = <0>; > + > + port@0 { > + reg = <0>; > + dsi0_in: endpoint { > + remote-endpoint = <&dpu_intf1_out>; > + }; > + }; > + > + port@1 { > + reg = <1>; > + dsi0_out: endpoint { > + remote-endpoint = <&sn65dsi86_in>; > + data-lanes = <0 1 2 3>; > + }; > + }; > + }; > + }; > +... > diff --git a/Documentation/devicetree/bindings/display/msm/dsi.txt b/Documentation/devicetree/bindings/display/msm/dsi.txt > deleted file mode 100644 > index b9a64d3..0000000 > --- a/Documentation/devicetree/bindings/display/msm/dsi.txt > +++ /dev/null > @@ -1,249 +0,0 @@ > -Qualcomm Technologies Inc. adreno/snapdragon DSI output > - > -DSI Controller: > -Required properties: > -- compatible: > - * "qcom,mdss-dsi-ctrl" > -- reg: Physical base address and length of the registers of controller > -- reg-names: The names of register regions. The following regions are required: > - * "dsi_ctrl" > -- interrupts: The interrupt signal from the DSI block. > -- power-domains: Should be <&mmcc MDSS_GDSC>. > -- clocks: Phandles to device clocks. > -- clock-names: the following clocks are required: > - * "mdp_core" > - * "iface" > - * "bus" > - * "core_mmss" > - * "byte" > - * "pixel" > - * "core" > - For DSIv2, we need an additional clock: > - * "src" > - For DSI6G v2.0 onwards, we need also need the clock: > - * "byte_intf" > -- assigned-clocks: Parents of "byte" and "pixel" for the given platform. > -- assigned-clock-parents: The Byte clock and Pixel clock PLL outputs provided > - by a DSI PHY block. See [1] for details on clock bindings. > -- vdd-supply: phandle to vdd regulator device node > -- vddio-supply: phandle to vdd-io regulator device node > -- vdda-supply: phandle to vdda regulator device node > -- phys: phandle to DSI PHY device node > -- phy-names: the name of the corresponding PHY device > -- syscon-sfpb: A phandle to mmss_sfpb syscon node (only for DSIv2) > -- ports: Contains 2 DSI controller ports as child nodes. Each port contains > - an endpoint subnode as defined in [2] and [3]. > - > -Optional properties: > -- panel@0: Node of panel connected to this DSI controller. > - See files in [4] for each supported panel. > -- qcom,dual-dsi-mode: Boolean value indicating if the DSI controller is > - driving a panel which needs 2 DSI links. > -- qcom,master-dsi: Boolean value indicating if the DSI controller is driving > - the master link of the 2-DSI panel. > -- qcom,sync-dual-dsi: Boolean value indicating if the DSI controller is > - driving a 2-DSI panel whose 2 links need receive command simultaneously. > -- pinctrl-names: the pin control state names; should contain "default" > -- pinctrl-0: the default pinctrl state (active) > -- pinctrl-n: the "sleep" pinctrl state > -- ports: contains DSI controller input and output ports as children, each > - containing one endpoint subnode. > - > - DSI Endpoint properties: > - - remote-endpoint: For port@0, set to phandle of the connected panel/bridge's > - input endpoint. For port@1, set to the MDP interface output. See [2] for > - device graph info. > - > - - data-lanes: this describes how the physical DSI data lanes are mapped > - to the logical lanes on the given platform. The value contained in > - index n describes what physical lane is mapped to the logical lane n > - (DATAn, where n lies between 0 and 3). The clock lane position is fixed > - and can't be changed. Hence, they aren't a part of the DT bindings. See > - [3] for more info on the data-lanes property. > - > - For example: > - > - data-lanes = <3 0 1 2>; > - > - The above mapping describes that the logical data lane DATA0 is mapped to > - the physical data lane DATA3, logical DATA1 to physical DATA0, logic DATA2 > - to phys DATA1 and logic DATA3 to phys DATA2. > - > - There are only a limited number of physical to logical mappings possible: > - <0 1 2 3> > - <1 2 3 0> > - <2 3 0 1> > - <3 0 1 2> > - <0 3 2 1> > - <1 0 3 2> > - <2 1 0 3> > - <3 2 1 0> > - > -DSI PHY: > -Required properties: > -- compatible: Could be the following > - * "qcom,dsi-phy-28nm-hpm" > - * "qcom,dsi-phy-28nm-lp" > - * "qcom,dsi-phy-20nm" > - * "qcom,dsi-phy-28nm-8960" > - * "qcom,dsi-phy-14nm" > - * "qcom,dsi-phy-14nm-660" > - * "qcom,dsi-phy-10nm" > - * "qcom,dsi-phy-10nm-8998" > - * "qcom,dsi-phy-7nm" > - * "qcom,dsi-phy-7nm-8150" > -- reg: Physical base address and length of the registers of PLL, PHY. Some > - revisions require the PHY regulator base address, whereas others require the > - PHY lane base address. See below for each PHY revision. > -- reg-names: The names of register regions. The following regions are required: > - For DSI 28nm HPM/LP/8960 PHYs and 20nm PHY: > - * "dsi_pll" > - * "dsi_phy" > - * "dsi_phy_regulator" > - For DSI 14nm, 10nm and 7nm PHYs: > - * "dsi_pll" > - * "dsi_phy" > - * "dsi_phy_lane" > -- clock-cells: Must be 1. The DSI PHY block acts as a clock provider, creating > - 2 clocks: A byte clock (index 0), and a pixel clock (index 1). > -- power-domains: Should be <&mmcc MDSS_GDSC>. > -- clocks: Phandles to device clocks. See [1] for details on clock bindings. > -- clock-names: the following clocks are required: > - * "iface" > - * "ref" (only required for new DTS files/entries) > - For 28nm HPM/LP, 28nm 8960 PHYs: > -- vddio-supply: phandle to vdd-io regulator device node > - For 20nm PHY: > -- vddio-supply: phandle to vdd-io regulator device node > -- vcca-supply: phandle to vcca regulator device node > - For 14nm PHY: > -- vcca-supply: phandle to vcca regulator device node > - For 10nm and 7nm PHY: > -- vdds-supply: phandle to vdds regulator device node > - > -Optional properties: > -- qcom,dsi-phy-regulator-ldo-mode: Boolean value indicating if the LDO mode PHY > - regulator is wanted. > -- qcom,mdss-mdp-transfer-time-us: Specifies the dsi transfer time for command mode > - panels in microseconds. Driver uses this number to adjust > - the clock rate according to the expected transfer time. > - Increasing this value would slow down the mdp processing > - and can result in slower performance. > - Decreasing this value can speed up the mdp processing, > - but this can also impact power consumption. > - As a rule this time should not be higher than the time > - that would be expected with the processing at the > - dsi link rate since anyways this would be the maximum > - transfer time that could be achieved. > - If ping pong split is enabled, this time should not be higher > - than two times the dsi link rate time. > - If the property is not specified, then the default value is 14000 us. > - > -[1] Documentation/devicetree/bindings/clock/clock-bindings.txt > -[2] Documentation/devicetree/bindings/graph.txt > -[3] Documentation/devicetree/bindings/media/video-interfaces.txt > -[4] Documentation/devicetree/bindings/display/panel/ > - > -Example: > - dsi0: dsi@fd922800 { > - compatible = "qcom,mdss-dsi-ctrl"; > - qcom,dsi-host-index = <0>; > - interrupt-parent = <&mdp>; > - interrupts = <4 0>; > - reg-names = "dsi_ctrl"; > - reg = <0xfd922800 0x200>; > - power-domains = <&mmcc MDSS_GDSC>; > - clock-names = > - "bus", > - "byte", > - "core", > - "core_mmss", > - "iface", > - "mdp_core", > - "pixel"; > - clocks = > - <&mmcc MDSS_AXI_CLK>, > - <&mmcc MDSS_BYTE0_CLK>, > - <&mmcc MDSS_ESC0_CLK>, > - <&mmcc MMSS_MISC_AHB_CLK>, > - <&mmcc MDSS_AHB_CLK>, > - <&mmcc MDSS_MDP_CLK>, > - <&mmcc MDSS_PCLK0_CLK>; > - > - assigned-clocks = > - <&mmcc BYTE0_CLK_SRC>, > - <&mmcc PCLK0_CLK_SRC>; > - assigned-clock-parents = > - <&dsi_phy0 0>, > - <&dsi_phy0 1>; > - > - vdda-supply = <&pma8084_l2>; > - vdd-supply = <&pma8084_l22>; > - vddio-supply = <&pma8084_l12>; > - > - phys = <&dsi_phy0>; > - phy-names ="dsi-phy"; > - > - qcom,dual-dsi-mode; > - qcom,master-dsi; > - qcom,sync-dual-dsi; > - > - qcom,mdss-mdp-transfer-time-us = <12000>; > - > - pinctrl-names = "default", "sleep"; > - pinctrl-0 = <&dsi_active>; > - pinctrl-1 = <&dsi_suspend>; > - > - ports { > - #address-cells = <1>; > - #size-cells = <0>; > - > - port@0 { > - reg = <0>; > - dsi0_in: endpoint { > - remote-endpoint = <&mdp_intf1_out>; > - }; > - }; > - > - port@1 { > - reg = <1>; > - dsi0_out: endpoint { > - remote-endpoint = <&panel_in>; > - data-lanes = <0 1 2 3>; > - }; > - }; > - }; > - > - panel: panel@0 { > - compatible = "sharp,lq101r1sx01"; > - reg = <0>; > - link2 = <&secondary>; > - > - power-supply = <...>; > - backlight = <...>; > - > - port { > - panel_in: endpoint { > - remote-endpoint = <&dsi0_out>; > - }; > - }; > - }; > - }; > - > - dsi_phy0: dsi-phy@fd922a00 { > - compatible = "qcom,dsi-phy-28nm-hpm"; > - qcom,dsi-phy-index = <0>; > - reg-names = > - "dsi_pll", > - "dsi_phy", > - "dsi_phy_regulator"; > - reg = <0xfd922a00 0xd4>, > - <0xfd922b00 0x2b0>, > - <0xfd922d80 0x7b>; > - clock-names = "iface"; > - clocks = <&mmcc MDSS_AHB_CLK>; > - #clock-cells = <1>; > - vddio-supply = <&pma8084_l12>; > - > - qcom,dsi-phy-regulator-ldo-mode; > - }; > -- > 2.7.4 >
