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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>
This commit is contained in:
Hans de Goede 2016-06-05 16:53:04 +02:00
parent fd2aa39a61
commit bca4c3c5fc
1 changed files with 7 additions and 0 deletions
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7
drivers/usb/musb-new/sunxi.c
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@ -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;
}