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authorSascha Hauer <s.hauer@pengutronix.de>2017-01-13 12:17:34 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2017-01-19 15:21:14 +0100
commitbbe0df90b8e2463dd8db651e9f1dd57702985d2d (patch)
tree22a09ec0a92d50df452dbe2070575e3c8877b746
parent2eb99b610bf321eb56aba5d72d1b4ff346823374 (diff)
downloadbarebox-bbe0df90b8e2463dd8db651e9f1dd57702985d2d.tar.gz
usb: imx: Add clock support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--drivers/usb/imx/chipidea-imx.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/usb/imx/chipidea-imx.c b/drivers/usb/imx/chipidea-imx.c
index f435487..ccd5346 100644
--- a/drivers/usb/imx/chipidea-imx.c
+++ b/drivers/usb/imx/chipidea-imx.c
@@ -27,6 +27,7 @@
#include <usb/fsl_usb2.h>
#include <linux/err.h>
#include <linux/phy/phy.h>
+#include <linux/clk.h>
#define MXC_EHCI_PORTSC_MASK ((0xf << 28) | (1 << 25))
@@ -44,6 +45,7 @@ struct imx_chipidea {
struct regulator *vbus;
struct phy *phy;
struct usb_phy *usbphy;
+ struct clk *clk;
};
static int imx_chipidea_port_init(void *drvdata)
@@ -268,6 +270,17 @@ static int imx_chipidea_probe(struct device_d *dev)
if (IS_ERR(ci->vbus))
ci->vbus = NULL;
+ /*
+ * Some devices have more than one clock, in this case they are enabled
+ * by default in the clock driver. At least enable the main clock for
+ * devices which have only one.
+ */
+ ci->clk = clk_get(dev, NULL);
+ if (IS_ERR(ci->clk))
+ return PTR_ERR(ci->clk);
+
+ clk_enable(ci->clk);
+
if (of_property_read_bool(dev->device_node, "fsl,usbphy")) {
ci->phy = of_phy_get_by_phandle(dev, "fsl,usbphy", 0);
if (IS_ERR(ci->phy)) {