From a7ca2a709dbce8ef712fc829f686672d0c0256bf Mon Sep 17 00:00:00 2001 From: Marcel Ziswiler Date: Thu, 22 Feb 2018 15:38:25 +0100 Subject: 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 Reviewed-by: Dmitry Osipenko Reviewed-by: Rob Herring Signed-off-by: Thierry Reding --- Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'Documentation/devicetree/bindings/phy') 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. -- cgit v1.2.3