NXP Display Mix mipi-rst Reset Controller ========================================= This binding describes a reset controller device that is used to reset or de-reset the MIPI DPHY master direction(for MIPI DSI) and slave direction(for MIPI CSI) included by the Display Mix subsystem on IMX8MM and IMX8MN platforms. Like sft-rstn, only assert and deassert functions are required for PHY reset or de-reset. Please also refer to reset.txt in this directory for common reset controller binding usage. Required properties: - compatible: Should be "fsl,imx8mm-dispmix-mipi-rst" or "fsl,imx8mn-dispmix-mipi-rst". - reg: should be register base and length as documented in the datasheet. - clocks: phandle and clock specifier to disp apb clock for register access. - clock-names: should be "disp-apb". - power-domains: phandle to dispmix power domain. - reset-cells: 1, see below. example: dispmix_mipi_rst: dispmix-mipi-rst@32e28008 { compatible = "fsl,imx8mn-dispmix-mipi-rst"; reg = <0x0 0x32e28008 0x0 0x4>; clocks = <&clk IMX8MN_CLK_DISP_APB_ROOT>; clock-names = "disp-apb"; active_low; power-domains = <&dispmix_pd>; #reset-cells = <1>; }; Specifying mipi-rst control of devices ====================================== Device nodes in Display Mix should specify the reset channel required in their "resets" property, containing a phandle to the mipi-rst device node and an index to specify which channel to use, as described in Documentation/devicetree/bindings/reset/reset.txt. example: mipi_dsi_resets: mipi-dsi-resets { #address-cells = <1>; #size-cells = <0>; #reset-cells = <0>; dsi-mipi-reset { compatible = "dsi,mipi-reset"; resets = <&dispmix_mipi_rst IMX8MN_MIPI_M_RESET>; }; }; Macro definitions for the supported reset channels can be found in: include/dt-bindings/reset/imx8mm-dispmix.h and include/dt-bindings/reset/imx8mn-dispmix.h.