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 3081afca0e28befb2ccb50ee41dfc238de18a8ab..c016a0bb544dd82a86a6a6dfe780d58c5bcc426f 100644 (file)
--- 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;
 }