uniphier-reset.txt

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    1 UniPhier glue reset controller
    2 
    3 
    4 Peripheral core reset in glue layer
    5 -----------------------------------
    6 
    7 Some peripheral core reset belongs to its own glue layer. Before using
    8 this core reset, it is necessary to control the clocks and resets to enable
    9 this layer. These clocks and resets should be described in each property.
   10 
   11 Required properties:
   12 - compatible: Should be
   13     "socionext,uniphier-pro4-usb3-reset" - for Pro4 SoC USB3
   14     "socionext,uniphier-pro5-usb3-reset" - for Pro5 SoC USB3
   15     "socionext,uniphier-pxs2-usb3-reset" - for PXs2 SoC USB3
   16     "socionext,uniphier-ld20-usb3-reset" - for LD20 SoC USB3
   17     "socionext,uniphier-pxs3-usb3-reset" - for PXs3 SoC USB3
   18     "socionext,uniphier-pro4-ahci-reset" - for Pro4 SoC AHCI
   19     "socionext,uniphier-pxs2-ahci-reset" - for PXs2 SoC AHCI
   20     "socionext,uniphier-pxs3-ahci-reset" - for PXs3 SoC AHCI
   21 - #reset-cells: Should be 1.
   22 - reg: Specifies offset and length of the register set for the device.
   23 - clocks: A list of phandles to the clock gate for the glue layer.
   24         According to the clock-names, appropriate clocks are required.
   25 - clock-names: Should contain
   26     "gio", "link" - for Pro4 and Pro5 SoCs
   27     "link"        - for others
   28 - resets: A list of phandles to the reset control for the glue layer.
   29         According to the reset-names, appropriate resets are required.
   30 - reset-names: Should contain
   31     "gio", "link" - for Pro4 and Pro5 SoCs
   32     "link"        - for others
   33 
   34 Example:
   35 
   36         usb-glue@65b00000 {
   37                 compatible = "socionext,uniphier-ld20-dwc3-glue",
   38                              "simple-mfd";
   39                 #address-cells = <1>;
   40                 #size-cells = <1>;
   41                 ranges = <0 0x65b00000 0x400>;
   42 
   43                 usb_rst: reset@0 {
   44                         compatible = "socionext,uniphier-ld20-usb3-reset";
   45                         reg = <0x0 0x4>;
   46                         #reset-cells = <1>;
   47                         clock-names = "link";
   48                         clocks = <&sys_clk 14>;
   49                         reset-names = "link";
   50                         resets = <&sys_rst 14>;
   51                 };
   52 
   53                 regulator {
   54                         ...
   55                 };
   56 
   57                 phy {
   58                         ...
   59                 };
   60                 ...
   61         };

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sys/contrib/device-tree/Bindings/reset/uniphier-reset.txt