[PATCH v3 19/20] i.MX: imx-usb-misc: Add Vybrid support

[Andrey Smirnov]

Add code to do usbmisc initialization on VF610 family of SoCs. Based on
analogous code from Linux kernel.

Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
---
 drivers/usb/imx/imx-usb-misc.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/usb/imx/imx-usb-misc.c b/drivers/usb/imx/imx-usb-misc.c
index 7c18ca2..9cae440 100644
--- a/drivers/usb/imx/imx-usb-misc.c
+++ b/drivers/usb/imx/imx-usb-misc.c
@@ -422,6 +422,28 @@ static __maybe_unused struct imx_usb_misc_data mx6_data = {
 	.post_init = mx6_post_init,
 };
 
+#define VF610_OVER_CUR_DIS		BIT(7)
+
+static __maybe_unused int vf610_initialize_usb_hw(void __iomem *base, int port,
+		unsigned int flags)
+{
+	u32 reg;
+
+	if (port >= 1)
+		return -EINVAL;
+
+	if (flags & MXC_EHCI_DISABLE_OVERCURRENT) {
+		reg = readl(base);
+		writel(reg | VF610_OVER_CUR_DIS, base);
+	}
+
+	return 0;
+}
+
+static __maybe_unused struct imx_usb_misc_data vf610_data = {
+	.init = vf610_initialize_usb_hw,
+};
+
 static struct platform_device_id imx_usbmisc_ids[] = {
 #ifdef CONFIG_ARCH_IMX25
 	{
@@ -519,6 +541,12 @@ static __maybe_unused struct of_device_id imx_usbmisc_dt_ids[] = {
 		.data = &mx6_data,
 	},
 #endif
+#ifdef CONFIG_ARCH_VF610
+	{
+		.compatible = "fsl,vf610-usbmisc",
+		.data = &vf610_data,
+	},
+#endif
 	{
 		/* sentinel */
 	},
-- 
2.9.3