diff options
author | Lucas Stach <l.stach@pengutronix.de> | 2017-07-31 20:03:05 +0200 |
---|---|---|
committer | Lucas Stach <l.stach@pengutronix.de> | 2017-07-31 20:03:05 +0200 |
commit | d14b844b08635c717fb52a294ed8d6872e260315 (patch) | |
tree | 18607dcdd29688b2fa9528f79423183a68e9898d /dts/Bindings/phy/rcar-gen3-phy-usb3.txt | |
parent | 858b797e529e26c19bfa893fdb37ed67ff7a6006 (diff) | |
download | barebox-d14b844b08635c717fb52a294ed8d6872e260315.tar.gz barebox-d14b844b08635c717fb52a294ed8d6872e260315.tar.xz |
dts: update to v4.13-rc2
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Diffstat (limited to 'dts/Bindings/phy/rcar-gen3-phy-usb3.txt')
-rw-r--r-- | dts/Bindings/phy/rcar-gen3-phy-usb3.txt | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/dts/Bindings/phy/rcar-gen3-phy-usb3.txt b/dts/Bindings/phy/rcar-gen3-phy-usb3.txt new file mode 100644 index 0000000000..f94cea48f6 --- /dev/null +++ b/dts/Bindings/phy/rcar-gen3-phy-usb3.txt @@ -0,0 +1,46 @@ +* Renesas R-Car generation 3 USB 3.0 PHY + +This file provides information on what the device node for the R-Car generation +3 USB 3.0 PHY contains. +If you want to enable spread spectrum clock (ssc), you should use USB_EXTAL +instead of USB3_CLK. However, if you don't want to these features, you don't +need this driver. + +Required properties: +- compatible: "renesas,r8a7795-usb3-phy" if the device is a part of an R8A7795 + SoC. + "renesas,r8a7796-usb3-phy" if the device is a part of an R8A7796 + SoC. + "renesas,rcar-gen3-usb3-phy" 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 3.0 PHY register block. +- clocks: A list of phandles and clock-specifier pairs. +- clock-names: Name of the clocks. + - The funcional clock must be "usb3-if". + - The usb3's external clock must be "usb3s_clk". + - The usb2's external clock must be "usb_extal". If you want to use the ssc, + the clock-frequency must not be 0. +- #phy-cells: see phy-bindings.txt in the same directory, must be <0>. + +Optional properties: +- renesas,ssc-range: Enable/disable spread spectrum clock (ssc) by using + the following values as u32: + - 0 (or the property doesn't exist): disable the ssc + - 4980: enable the ssc as -4980 ppm + - 4492: enable the ssc as -4492 ppm + - 4003: enable the ssc as -4003 ppm + +Example (R-Car H3): + + usb-phy@e65ee000 { + compatible = "renesas,r8a7795-usb3-phy", + "renesas,rcar-gen3-usb3-phy"; + reg = <0 0xe65ee000 0 0x90>; + clocks = <&cpg CPG_MOD 328>, <&usb3s0_clk>, <&usb_extal>; + clock-names = "usb3-if", "usb3s_clk", "usb_extal"; + }; |