This adds mx53 as the next user of the usbmisc driver and makes it
possible to disable the overcurrent-detection of the internal phy.
Signed-off-by: Michael Grzeschik <m.grzesc...@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <m...@pengutronix.de>
---
Changes since v2:
* added defines for register offsets and bitmasks
* fixed disable_oc option for all ports
drivers/usb/chipidea/usbmisc_imx.c | 51 ++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/drivers/usb/chipidea/usbmisc_imx.c
b/drivers/usb/chipidea/usbmisc_imx.c
index e090e0f..b1811df 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -19,6 +19,13 @@
#define USB_DEV_MAX 4
+#define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08;
+#define MX53_USB_UH2_CTRL_OFFSET 0x14;
+#define MX53_USB_UH3_CTRL_OFFSET 0x18;
+#define MX53_BM_OVER_CUR_DIS_H1 BIT(5)
+#define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
+#define MX53_BM_OVER_CUR_DIS_UHx BIT(30)
+
#define MX6_BM_OVER_CUR_DIS BIT(7)
struct imx_usbmisc {
@@ -54,6 +61,45 @@ static struct usbmisc_usb_device *get_usbdev(struct device
*dev)
return &usbmisc->usbdev[i];
}
+static int usbmisc_imx53_init(struct device *dev)
+{
+ struct usbmisc_usb_device *usbdev;
+ void __iomem *reg;
+ unsigned long flags;
+ u32 val;
+
+ usbdev = get_usbdev(dev);
+ if (IS_ERR(usbdev))
+ return PTR_ERR(usbdev);
+
+ if (usbdev->disable_oc) {
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ switch (usbdev->index) {
+ case 0:
+ reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
+ val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
+ break;
+ case 1:
+ reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
+ val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
+ break;
+ case 2:
+ reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
+ val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
+ break;
+ case 3:
+ reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
+ val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
+ break;
+ }
+ if (reg && val)
+ writel(val, reg);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+ }
+
+ return 0;
+}
+
static int usbmisc_imx6q_init(struct device *dev)
{
@@ -76,11 +122,16 @@ static int usbmisc_imx6q_init(struct device *dev)
return 0;
}
+static const struct usbmisc_ops imx53_usbmisc_ops = {
+ .init = usbmisc_imx53_init,
+};
+
static const struct usbmisc_ops imx6q_usbmisc_ops = {
.init = usbmisc_imx6q_init,
};
static const struct of_device_id usbmisc_imx_dt_ids[] = {
+ { .compatible = "fsl,imx53-usbmisc", .data = (void *)&imx53_usbmisc_ops
},
{ .compatible = "fsl,imx6q-usbmisc", .data = (void *)&imx6q_usbmisc_ops
},
{ /* sentinel */ }
};
--
1.7.10.4
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