• Richard Zhu's avatar
    MLK-17815-2 ata: imx: imx8qm: configure phy impedance ratio · 868235ac
    Richard Zhu authored
    - To save power consumption, PHY related CLKs can be
    gated off after the configurations are done.
    - The impedance ratio should be configured refer to
    differnet REXT values.
    0x6c <--> REXT valuse is 85Ohms
    Default values 0x80 <--> REXT value is 100Ohms.
    - IMX8QM_HSIO_PHY_X1_APB_CLK is mandatory required when
    access SATA PHY registers. Change the power domain to SATA.
    Signed-off-by: default avatarRichard Zhu <hongxing.zhu@nxp.com>
    868235ac
imx-sata.txt 1.5 KB