From: Hans de Goede <hdegoede@redhat.com>
Date: Sun, 5 Jun 2016 14:53:04 +0000 (+0200)
Subject: sunxi: musb: Properly turn of musb controller before booting
X-Git-Tag: v2016.07-rc2~47^2~2
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=bca4c3c5fcb3d170308e621dadcc5555a1aca1b8;p=u-boot

sunxi: musb: Properly turn of musb controller before booting

Turn of the clock and assert the reset when musb_stop gets called, so that
the os gets the musb controller in a pristine state. This fixes a spurious
VBus error interrupt triggering as soon as the Linux musb driver loads.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---

diff --git a/drivers/usb/musb-new/sunxi.c b/drivers/usb/musb-new/sunxi.c
index 3081afca0e..c016a0bb54 100644
--- a/drivers/usb/musb-new/sunxi.c
+++ b/drivers/usb/musb-new/sunxi.c
@@ -340,9 +340,16 @@ int musb_usb_probe(struct udevice *dev)
 int musb_usb_remove(struct udevice *dev)
 {
 	struct musb_host_data *host = dev_get_priv(dev);
+	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
 
 	musb_stop(host->host);
 
+	sunxi_usb_phy_exit(0);
+#ifdef CONFIG_SUNXI_GEN_SUN6I
+	clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_GATE_OFFSET_USB0);
+#endif
+	clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_USB0);
+
 	return 0;
 }