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-rw-r--r--dts/Bindings/phy/nvidia,tegra20-usb-phy.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/dts/Bindings/phy/nvidia,tegra20-usb-phy.txt b/dts/Bindings/phy/nvidia,tegra20-usb-phy.txt
index a9aa79f..1aa6f26 100644
--- a/dts/Bindings/phy/nvidia,tegra20-usb-phy.txt
+++ b/dts/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.