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author | Vivek Gautam <gautam.vivek@samsung.com> | 2013-03-14 15:59:11 +0530 |
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committer | Felipe Balbi <balbi@ti.com> | 2013-03-18 11:18:15 +0200 |
commit | b52767581765d3d1a1ba7106674791e540574704 (patch) | |
tree | 95823207cf8cf597ffa444b7efc9a953e76a7eeb /Documentation | |
parent | dc2377d0b0a298ec9d7d232c0d757f462dedcca2 (diff) | |
download | linux-stable-b52767581765d3d1a1ba7106674791e540574704.tar.gz linux-stable-b52767581765d3d1a1ba7106674791e540574704.tar.bz2 linux-stable-b52767581765d3d1a1ba7106674791e540574704.zip |
usb: phy: samsung: Add PHY support for USB 3.0 controller
Adding PHY driver support for USB 3.0 controller for Samsung's
SoCs.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/usb/samsung-usbphy.txt | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt index 96940abe9a57..f575302e5173 100644 --- a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt +++ b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt @@ -61,3 +61,57 @@ Example: reg = <0x10020704 0x8>; }; }; + + +** Samsung's usb 3.0 phy transceiver + +Starting exynso5250, Samsung's SoC have usb 3.0 phy transceiver +which is used for controlling usb 3.0 phy for dwc3-exynos usb 3.0 +controllers across Samsung SOCs. + +Required properties: + +Exynos5250: +- compatible : should be "samsung,exynos5250-usb3phy" +- reg : base physical address of the phy registers and length of memory mapped + region. +- clocks: Clock IDs array as required by the controller. +- clock-names: names of clocks correseponding to IDs in the clock property + as requested by the controller driver. + +Optional properties: +- #address-cells: should be '1' when usbphy node has a child node with 'reg' + property. +- #size-cells: should be '1' when usbphy node has a child node with 'reg' + property. +- ranges: allows valid translation between child's address space and parent's + address space. + +- The child node 'usbphy-sys' to the node 'usbphy' is for the system controller + interface for usb-phy. It should provide the following information required by + usb-phy controller to control phy. + - reg : base physical address of PHY_CONTROL registers. + The size of this register is the total sum of size of all PHY_CONTROL + registers that the SoC has. For example, the size will be + '0x4' in case we have only one PHY_CONTROL register (e.g. + OTHERS register in S3C64XX or USB_PHY_CONTROL register in S5PV210) + and, '0x8' in case we have two PHY_CONTROL registers (e.g. + USBDEVICE_PHY_CONTROL and USBHOST_PHY_CONTROL registers in exynos4x). + and so on. + +Example: + usbphy@12100000 { + compatible = "samsung,exynos5250-usb3phy"; + reg = <0x12100000 0x100>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + clocks = <&clock 1>, <&clock 286>; + clock-names = "ext_xtal", "usbdrd30"; + + usbphy-sys { + /* USB device and host PHY_CONTROL registers */ + reg = <0x10040704 0x8>; + }; + }; |