On 30/08/2022 19:25, Frank Li wrote: > USBPHY_TRIM_OVERRIDE provide chip trim value. DTS provide board level > calibration data. Board level calibration data should be base on chip > trim value. > > For example, TXCAL45DP board level hope add +2.85% register base on > standard 45ohm. But chip trim value is -5.25% to get 45ohm output. > Actually finial TXCAL45DP should be -5.25% + 2.85% = -2.4%. > > If chip have not trim value at USBPHY_TRIM_OVERRIDE, No behavior change. > board level calibration will be applied. > > If chip have trim value at USBPHY_TRIM_OVERRIDE and no DTS board level > data, chip trim value will be applied. > > Signed-off-by: Frank Li <Frank.Li@xxxxxxx> > --- > drivers/usb/phy/phy-mxs-usb.c | 40 ++++++++++++++++++++++++++++++++--- > 1 file changed, 37 insertions(+), 3 deletions(-) Use scripts/get_maintainers.pl to CC all maintainers and relevant mailing lists.... and do not Cc unrelated folks. Best regards, Krzysztof
