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| author |   Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2018-02-22 15:38:25 +0100 |
|---|---|---|
| committer |   Thierry Reding <treding@nvidia.com> | 2018-03-08 15:09:36 +0100 |
| commit | a7ca2a709dbce8ef712fc829f686672d0c0256bf (patch) | |
| tree | 935e5bd38659835421b570f8215c94c207106098 | |
| parent | dt-bindings: tegra: Add documentation for nvidia,tegra194-pmc (diff) | |
| download | linux-dev-a7ca2a709dbce8ef712fc829f686672d0c0256bf.tar.xz linux-dev-a7ca2a709dbce8ef712fc829f686672d0c0256bf.zip | |
dt-bindings: phy: Clarify ULPI PHY source clock
cdev2 is not actually a clock on Tegra20 but rather a pinmux pad group.
PLL_P_OUT4 is the source clock for the ULPI PHY and is output to the
DAP_MCLK2 pad.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
| -rw-r--r-- | Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.txt b/Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.txt index a9aa79fb90ed..1aa6f2674af5 100644 --- a/Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.txt +++ b/Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.txt @@ -21,7 +21,9 @@ Required properties : - timer: The timeout clock (clk_m). Present if phy_type == utmi. - utmi-pads: The clock needed to access the UTMI pad control registers. Present if phy_type == utmi. - - ulpi-link: The clock Tegra provides to the ULPI PHY (cdev2). + - ulpi-link: The clock Tegra provides to the ULPI PHY (usually pad DAP_MCLK2 + with pad group aka "nvidia,pins" cdev2 and pin mux option config aka + "nvidia,function" pllp_out4). Present if phy_type == ulpi, and ULPI link mode is in use. - resets : Must contain an entry for each entry in reset-names. See ../reset/reset.txt for details. |