Add support for using DM clock framework to enable and disable all the necessary clock for the USB controller.
Signed-off-by: Marek Vasut marex@denx.de Cc: Fabio Estevam festevam@gmail.com Cc: Peng Fan peng.fan@nxp.com Cc: Stefano Babic sbabic@denx.de Cc: Ye Li ye.li@nxp.com Cc: uboot-imx uboot-imx@nxp.com --- drivers/usb/host/ehci-mx6.c | 37 ++++++++++++++++++++++++++++++++----- 1 file changed, 32 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c index 6fb596633a3..ecc79cb54b6 100644 --- a/drivers/usb/host/ehci-mx6.c +++ b/drivers/usb/host/ehci-mx6.c @@ -5,6 +5,7 @@ */
#include <common.h> +#include <clk.h> #include <log.h> #include <usb.h> #include <errno.h> @@ -347,9 +348,6 @@ int ehci_mx6_common_init(struct usb_ehci *ehci, int index) { int ret;
- enable_usboh3_clk(1); - mdelay(1); - /* Do board specific initialization */ ret = board_ehci_hcd_init(index); if (ret) @@ -391,6 +389,9 @@ int ehci_hcd_init(int index, enum usb_init_type init, } }
+ enable_usboh3_clk(1); + mdelay(1); + ret = ehci_mx6_common_init(ehci, index); if (ret) return ret; @@ -428,6 +429,7 @@ struct ehci_mx6_priv_data { struct ehci_ctrl ctrl; struct usb_ehci *ehci; struct udevice *vbus_supply; + struct clk clk; enum usb_init_type init_type; int portnr; }; @@ -606,6 +608,20 @@ static int ehci_usb_probe(struct udevice *dev) priv->portnr = dev_seq(dev); priv->init_type = type;
+#if CONFIG_IS_ENABLED(CLK) + ret = clk_get_by_index(dev, 0, &priv->clk); + if (ret < 0) + return ret; + + ret = clk_enable(&priv->clk); + if (ret) + return ret; +#else + /* Compatibility with DM_USB and !CLK */ + enable_usboh3_clk(1); + mdelay(1); +#endif + #if CONFIG_IS_ENABLED(DM_REGULATOR) ret = device_get_supply_regulator(dev, "vbus-supply", &priv->vbus_supply); @@ -614,7 +630,7 @@ static int ehci_usb_probe(struct udevice *dev) #endif ret = ehci_mx6_common_init(ehci, priv->portnr); if (ret) - return ret; + goto err_clk;
#if CONFIG_IS_ENABLED(DM_REGULATOR) if (priv->vbus_supply) { @@ -623,7 +639,7 @@ static int ehci_usb_probe(struct udevice *dev) false : true); if (ret && ret != -ENOSYS) { printf("Error enabling VBUS supply (ret=%i)\n", ret); - return ret; + goto err_clk; } } #endif @@ -650,6 +666,13 @@ err_regulator: #if CONFIG_IS_ENABLED(DM_REGULATOR) if (priv->vbus_supply) regulator_set_enable(priv->vbus_supply, false); +#endif +err_clk: +#if CONFIG_IS_ENABLED(CLK) + clk_disable(&priv->clk); +#else + /* Compatibility with DM_USB and !CLK */ + enable_usboh3_clk(0); #endif return ret; } @@ -665,6 +688,10 @@ int ehci_usb_remove(struct udevice *dev) regulator_set_enable(priv->vbus_supply, false); #endif
+#if CONFIG_IS_ENABLED(CLK) + clk_disable(&priv->clk); +#endif + return 0; }