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For internal PHY (like UTMI), the phy clock may from internal pll,
it is on/off on the fly, the access PORTSC.PTS will hang without
phy clock. So, the usb_phy_init which will open phy clock needs to
be called before hw_phymode_configure.
See: http://marc.info/?l=linux-arm-kernel&m=139350618732108&w=2
For external PHY (like ulpi), it needs to configure portsc.pts before
visit viewport, or the viewport can't be visited. so phy_phymode_configure
needs to be called before usb_phy_init.
See:
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|---|---|---|
| .. | ||
| bits.h | ||
| ci_hdrc_imx.c | ||
| ci_hdrc_imx.h | ||
| ci_hdrc_msm.c | ||
| ci_hdrc_pci.c | ||
| ci_hdrc_zevio.c | ||
| ci.h | ||
| core.c | ||
| debug.c | ||
| debug.h | ||
| host.c | ||
| host.h | ||
| Kconfig | ||
| Makefile | ||
| otg.c | ||
| otg.h | ||
| udc.c | ||
| udc.h | ||
| usbmisc_imx.c | ||