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Diffstat (limited to 'Documentation/devicetree/bindings/clock/renesas,rcar-usb2-clock-sel.txt')
-rw-r--r-- | Documentation/devicetree/bindings/clock/renesas,rcar-usb2-clock-sel.txt | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/Documentation/devicetree/bindings/clock/renesas,rcar-usb2-clock-sel.txt b/Documentation/devicetree/bindings/clock/renesas,rcar-usb2-clock-sel.txt deleted file mode 100644 index e96e085271c1..000000000000 --- a/Documentation/devicetree/bindings/clock/renesas,rcar-usb2-clock-sel.txt +++ /dev/null @@ -1,55 +0,0 @@ -* Renesas R-Car USB 2.0 clock selector - -This file provides information on what the device node for the R-Car USB 2.0 -clock selector. - -If you connect an external clock to the USB_EXTAL pin only, you should set -the clock rate to "usb_extal" node only. -If you connect an oscillator to both the USB_XTAL and USB_EXTAL, this module -is not needed because this is default setting. (Of course, you can set the -clock rates to both "usb_extal" and "usb_xtal" nodes. - -Case 1: An external clock connects to R-Car SoC - +----------+ +--- R-Car ---------------------+ - |External |---|USB_EXTAL ---> all usb channels| - |clock | |USB_XTAL | - +----------+ +-------------------------------+ -In this case, we need this driver with "usb_extal" clock. - -Case 2: An oscillator connects to R-Car SoC - +----------+ +--- R-Car ---------------------+ - |Oscillator|---|USB_EXTAL -+-> all usb channels| - | |---|USB_XTAL --+ | - +----------+ +-------------------------------+ -In this case, we don't need this selector. - -Required properties: -- compatible: "renesas,r8a7795-rcar-usb2-clock-sel" if the device is a part of - an R8A7795 SoC. - "renesas,r8a7796-rcar-usb2-clock-sel" if the device if a part of - an R8A7796 SoC. - "renesas,rcar-gen3-usb2-clock-sel" for a generic R-Car Gen3 - compatible device. - - When compatible with the generic version, nodes must list the - SoC-specific version corresponding to the platform first - followed by the generic version. - -- reg: offset and length of the USB 2.0 clock selector register block. -- clocks: A list of phandles and specifier pairs. -- clock-names: Name of the clocks. - - The functional clock must be "ehci_ohci" - - The USB_EXTAL clock pin must be "usb_extal" - - The USB_XTAL clock pin must be "usb_xtal" -- #clock-cells: Must be 0 - -Example (R-Car H3): - - usb2_clksel: clock-controller@e6590630 { - compatible = "renesas,r8a77950-rcar-usb2-clock-sel", - "renesas,rcar-gen3-usb2-clock-sel"; - reg = <0 0xe6590630 0 0x02>; - clocks = <&cpg CPG_MOD 703>, <&usb_extal>, <&usb_xtal>; - clock-names = "ehci_ohci", "usb_extal", "usb_xtal"; - #clock-cells = <0>; - }; |