Hi, Roger Quadros <rogerq@xxxxxx> writes: > TRM [1] recommends that POWERPRESENT bit must not be > set and left at it's default value of 0. > > [1] OMAP542x TRM - http://www.ti.com/lit/pdf/swpu249 > Section 23.11.4.5.1 Mailbox VBUS/ID Management > > "Because PIPE powerpresent has a different meaning in host and in device mode, > and because of the redundancy with the UTMI signals, the controller ORes > together the appropriate PIPE and UTMI inputs to create its internal > VBUS status. For that reason, it is recommended to leave field > USBOTGSS_UTMI_OTG_STATUS[9] POWERPRESENT at its default value (=0), and only to > fill in the USB2 VBUS status fields in the same register." > > Signed-off-by: Roger Quadros <rogerq@xxxxxx> to make sure we avoid regressions, do you mind sharing on which platforms you tested this patch ? -- balbi
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