Documentation/devicetree/bindings/clock/ti/davinci/da8xx-cfgchip.txt

   1 Binding for TI DA8XX/OMAP-L13X/AM17XX/AM18XX CFGCHIP clocks
   2
   3 TI DA8XX/OMAP-L13X/AM17XX/AM18XX SoCs contain a general purpose set of
   4 registers call CFGCHIPn. Some of these registers function as clock
   5 gates. This document describes the bindings for those clocks.
   6
   7 All of the clock nodes described below must be child nodes of a CFGCHIP node
   8 (compatible = "ti,da830-cfgchip").
   9
  10 USB PHY clocks
  11 --------------
  12 Required properties:
  13 - compatible: shall be "ti,da830-usb-phy-clocks".
  14 - #clock-cells: from common clock binding; shall be set to 1.
  15 - clocks: phandles to the parent clocks corresponding to clock-names
  16 - clock-names: shall be "fck", "usb_refclkin", "auxclk"
  17
  18 This node provides two clocks. The clock at index 0 is the USB 2.0 PHY 48MHz
  19 clock and the clock at index 1 is the USB 1.1 PHY 48MHz clock.
  20
  21 eHRPWM Time Base Clock (TBCLK)
  22 ------------------------------
  23 Required properties:
  24 - compatible: shall be "ti,da830-tbclksync".
  25 - #clock-cells: from common clock binding; shall be set to 0.
  26 - clocks: phandle to the parent clock
  27 - clock-names: shall be "fck"
  28
  29 PLL DIV4.5 divider
  30 ------------------
  31 Required properties:
  32 - compatible: shall be "ti,da830-div4p5ena".
  33 - #clock-cells: from common clock binding; shall be set to 0.
  34 - clocks: phandle to the parent clock
  35 - clock-names: shall be "pll0_pllout"
  36
  37 EMIFA clock source (ASYNC1)
  38 ---------------------------
  39 Required properties:
  40 - compatible: shall be "ti,da850-async1-clksrc".
  41 - #clock-cells: from common clock binding; shall be set to 0.
  42 - clocks: phandles to the parent clocks corresponding to clock-names
  43 - clock-names: shall be "pll0_sysclk3", "div4.5"
  44
  45 ASYNC3 clock source
  46 -------------------
  47 Required properties:
  48 - compatible: shall be "ti,da850-async3-clksrc".
  49 - #clock-cells: from common clock binding; shall be set to 0.
  50 - clocks: phandles to the parent clocks corresponding to clock-names
  51 - clock-names: shall be "pll0_sysclk2", "pll1_sysclk2"
  52
  53 Examples:
  54
  55         cfgchip: syscon@1417c {
  56                 compatible = "ti,da830-cfgchip", "syscon", "simple-mfd";
  57                 reg = <0x1417c 0x14>;
  58
  59                 usb_phy_clk: usb-phy-clocks {
  60                         compatible = "ti,da830-usb-phy-clocks";
  61                         #clock-cells = <1>;
  62                         clocks = <&psc1 1>, <&usb_refclkin>, <&pll0_auxclk>;
  63                         clock-names = "fck", "usb_refclkin", "auxclk";
  64                 };
  65                 ehrpwm_tbclk: ehrpwm_tbclk {
  66                         compatible = "ti,da830-tbclksync";
  67                         #clock-cells = <0>;
  68                         clocks = <&psc1 17>;
  69                         clock-names = "fck";
  70                 };
  71                 div4p5_clk: div4.5 {
  72                         compatible = "ti,da830-div4p5ena";
  73                         #clock-cells = <0>;
  74                         clocks = <&pll0_pllout>;
  75                         clock-names = "pll0_pllout";
  76                 };
  77                 async1_clk: async1 {
  78                         compatible = "ti,da850-async1-clksrc";
  79                         #clock-cells = <0>;
  80                         clocks = <&pll0_sysclk 3>, <&div4p5_clk>;
  81                         clock-names = "pll0_sysclk3", "div4.5";
  82                 };
  83                 async3_clk: async3 {
  84                         compatible = "ti,da850-async3-clksrc";
  85                         #clock-cells = <0>;
  86                         clocks = <&pll0_sysclk 2>, <&pll1_sysclk 2>;
  87                         clock-names = "pll0_sysclk2", "pll1_sysclk2";
  88                 };
  89         };
  90
  91 Also see:
  92 - Documentation/devicetree/bindings/clock/clock-bindings.txt
  93