diff options
| author | Neil Armstrong <narmstrong@baylibre.com> | 2020-04-21 10:17:42 +0200 |
|---|---|---|
| committer | Neil Armstrong <narmstrong@baylibre.com> | 2020-04-28 10:23:10 +0200 |
| commit | 3dc4f8397015dac7c343f86a93bfb962ff4e8d6f (patch) | |
| tree | 2fbf40d88e8bfbb1a6c3f53eecb09776df78a639 /drivers/usb | |
| parent | 93d529a27567ff795d8098ecb286971dd28517fd (diff) | |
| download | u-boot-3dc4f8397015dac7c343f86a93bfb962ff4e8d6f.tar.gz | |
usb: dwc3-meson-g12a: add power-on/off of the PHYs
Power on/off the PHYs to enable power to the USB ports, fixing USB support
on Khadas VIM3/VIM3L boards.
The G12A USB complex has at least 2 USB2 PHYs, but one is muxed between the
DWC2 and DWC3 controller and the other one directly connected to the DWC3
controller. The USB3+PCIe combo PHY is muxed between the DWC3 controller
and a DW-PCIE controller.
All PHYs are optional, but it's type (usb2/usb3) and position are important
to determine it's capabilities, thus they are stored in a fixed size
array and the phy-name determines it's position, it's position determining
it's type and functionnalities.
This is why we need to loop over the array to power on all the DT provided
PHYs.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/dwc3-meson-g12a.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c index d4453f8784..de964d6c10 100644 --- a/drivers/usb/dwc3/dwc3-meson-g12a.c +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c @@ -408,6 +408,15 @@ static int dwc3_meson_g12a_probe(struct udevice *dev) goto err_phy_init; } + for (i = 0; i < PHY_COUNT; ++i) { + if (!priv->phys[i].dev) + continue; + + ret = generic_phy_power_on(&priv->phys[i]); + if (ret) + goto err_phy_init; + } + return 0; err_phy_init: @@ -430,6 +439,13 @@ static int dwc3_meson_g12a_remove(struct udevice *dev) clk_release_all(&priv->clk, 1); + for (i = 0; i < PHY_COUNT; ++i) { + if (!priv->phys[i].dev) + continue; + + generic_phy_power_off(&priv->phys[i]); + } + for (i = 0 ; i < PHY_COUNT ; ++i) { if (!priv->phys[i].dev) continue; |