313d6ad696
Add device tree files required for DPU driver on sun target. Move bindings for all mdp, dsi, panels, hdcp to opensource project. Change-Id: I1c6575313e33c5727f48ce94fe8b51cd9c62995d Signed-off-by: Varsha Suresh <quic_varssure@quicinc.com> Signed-off-by: Veera Sundaram Sankaran <quic_veeras@quicinc.com>
131 lines
6.7 KiB
Plaintext
131 lines
6.7 KiB
Plaintext
Qualcomm Technologies, Inc.
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mdss-dsi is the master DSI device which supports multiple DSI host controllers
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that are compatible with MIPI display serial interface specification.
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DSI Controller and PHY:
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Required properties:
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- compatible: Should be "qcom,dsi-ctrl-hw-v<version>". Supported
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versions include 2.4, 2.5, and 2.6.
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eg: qcom,dsi-ctrl-hw-v2.2, qcom,dsi-ctrl-hw-v2.3,
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qcom,dsi-ctrl-hw-v2.4, qcom,dsi-ctrl-hw-v2.5,
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qcom,dsi-ctrl-hw-v2.6
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And for dsi phy driver:
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qcom,dsi-phy-v3.0, qcom,dsi-phy-v4.0,
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qcom,dsi-phy-v4.1, qcom,dsi-phy-v4.2
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- reg: List of base address and length of memory mapped
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regions of DSI controller, disp_cc and mdp_intf.
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- reg-names: A list of strings that name the list of regs.
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"dsi_ctrl" - DSI controller memory region.
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"disp_cc_base" - Base address of disp_cc memory region.
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"mdp_intf_base" - Base address of mdp_intf memory region.
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- cell-index: Specifies the controller instance.
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- clocks: Clocks required for DSI controller operation.
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- clock-names: Names of the clocks corresponding to handles. Following
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clocks are required:
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"mdp_core_clk"
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"iface_clk"
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"core_mmss_clk"
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"bus_clk"
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"byte_clk"
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"pixel_clk"
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"core_clk"
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"byte_clk_rcg"
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"pixel_clk_rcg"
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- pll-label Supported versions of DSI PLL:
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dsi_pll_5nm
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- gdsc-supply: phandle to gdsc regulator node.
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- vdda-supply: phandle to vdda regulator node.
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- vcca-supply: phandle to vcca regulator node.
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- interrupt-parent phandle to the interrupt parent device node.
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- interrupts: The interrupt signal from the DSI block.
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- qcom,dsi-default-panel: Specifies the default panel.
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- qcom,mdp: Specifies the mdp node which can find panel node from this.
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- qcom,demura-panel-id: Specifies the u64 demura panel ID as an array <2>
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If demura is not used this node must be set to <0,0>.
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Bus Scaling Data:
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- qcom,msm-bus,name: String property describing MDSS client.
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- qcom,msm-bus,num-cases: This is the number of bus scaling use cases
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defined in the vectors property. This must be
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set to <2> for MDSS DSI driver where use-case 0
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is used to remove BW votes from the system. Use
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case 1 is used to generate bandwidth requestes
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when sending command packets.
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- qcom,msm-bus,num-paths: This represents number of paths in each bus
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scaling usecase. This value depends on number of
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AXI master ports dedicated to MDSS for
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particular chipset.
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- qcom,msm-bus,vectors-KBps: A series of 4 cell properties, with a format
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of (src, dst, ab, ib) which is defined at
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Documentation/devicetree/bindings/arm/msm/msm_bus.txt.
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DSI driver should always set average bandwidth
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(ab) to 0 and always use instantaneous
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bandwidth(ib) values.
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Optional properties:
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- label: String to describe controller.
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- qcom,platform-te-gpio: Specifies the gpio used for TE.
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- qcom,panel-te-source: Specifies the source pin for Vsync from panel or WD Timer.
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- qcom,dsi-ctrl: handle to dsi controller device
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- qcom,dsi-phy: handle to dsi phy device
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- qcom,dsi-ctrl-num: Specifies the DSI controllers to use for primary panel
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- qcom,dsi-sec-ctrl-num: Specifies the DSI controllers to use for secondary panel
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- qcom,dsi-phy-num: Specifies the DSI PHYs to use for primary panel
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- qcom,dsi-sec-phy-num: Specifies the DSI PHYs to use for secondary panel
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- qcom,dsi-select-clocks: Specifies the required clocks to use for primary panel
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- qcom,dsi-select-sec-clocks: Specifies the required clocks to use for secondary panel
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- qcom,dsi-display-list: Specifies the list of supported displays.
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- qcom,dsi-manager: Specifies dsi manager is present
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- qcom,dsi-display: Specifies dsi display is present
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- qcom,hdmi-display: Specifies hdmi is present
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- qcom,dp-display: Specified dp is present
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- qcom,<type>-supply-entries: A node that lists the elements of the supply used by the
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a particular "type" of DSI module. The module "types"
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can be "core", "ctrl", and "phy". Within the same type,
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there can be more than one instance of this binding,
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in which case the entry would be appended with the
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supply entry index.
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e.g. qcom,ctrl-supply-entry@0
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-- qcom,supply-name: name of the supply (vdd/vdda/vddio)
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-- qcom,supply-min-voltage: minimum voltage level (uV)
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-- qcom,supply-max-voltage: maximum voltage level (uV)
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-- qcom,supply-enable-load: load drawn (uA) from enabled supply
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-- qcom,supply-disable-load: load drawn (uA) from disabled supply
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-- qcom,supply-pre-on-sleep: time to sleep (ms) before turning on
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-- qcom,supply-post-on-sleep: time to sleep (ms) after turning on
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-- qcom,supply-pre-off-sleep: time to sleep (ms) before turning off
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-- qcom,supply-post-off-sleep: time to sleep (ms) after turning off
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- qcom,mdss-mdp-transfer-time-us: Specifies the dsi transfer time for command mode
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panels in microseconds. Driver uses this number to adjust
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the clock rate according to the expected transfer time.
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Increasing this value would slow down the mdp processing
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and can result in slower performance.
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Decreasing this value can speed up the mdp processing,
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but this can also impact power consumption.
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As a rule this time should not be higher than the time
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that would be expected with the processing at the
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dsi link rate since anyways this would be the maximum
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transfer time that could be achieved.
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If ping pong split enabled, this time should not be higher
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than two times the dsi link rate time.
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If the property is not specified, then the default value is 14000 us.
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- qcom,dsi-phy-pll-bypass: A boolean property that enables bypassing hardware access in DSI
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PHY/PLL drivers to allow the DSI driver to run on emulation platforms
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that might be missing those modules.
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- - qcom,null-insertion-enabled: A boolean to enable NULL packet insertion feature for DSI controller.
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- ports: This video port is used when external bridge is present.
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The connection is modeled using the OF graph bindings
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specified in Documentation/devicetree/bindings/graph.txt.
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Video port 0 reg 0 is for the bridge output. The remote
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endpoint phandle should be mipi_dsi_device device node.
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- qcom,dsi-pll-ssc-en: Boolean property to indicate that ssc is enabled.
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- qcom,dsi-pll-ssc-mode: Spread-spectrum clocking. It can be either "down-spread"
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or "center-spread". Default is "down-spread" if it is not specified.
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- qcom,ssc-frequency-hz: Integer property to specify the spread frequency
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to be programmed for the SSC.
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- qcom,ssc-ppm: Integer property to specify the Parts per Million
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value of SSC.
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- qcom,avdd-regulator-gpio: Specifies the gpio pin used for avdd
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power supply regulator.
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