diff options
| author | Peter Chen <peter.chen@nxp.com> | 2018-08-22 16:44:21 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:33:45 +0800 |
| commit | dfbb977b78f8da771145d4f093020c4e1cff800c (patch) | |
| tree | 4c8d914c12fe46ea7cfcbdafe71f29a517b9f076 /drivers/phy | |
| parent | f4211724d6228a0515d93a320f1016947bd0c37c (diff) | |
MLK-19442-2 phy: phy-fsl-imx8mq-usb: change ssc_range value
According to IC engineer suggestion, set ssc_range as -4003 ppm
will have more tolerence for EMI, and suitable for more boards.
Besides, one customer board needs to set this value to pass TX
SSC test.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/phy-fsl-imx8mq-usb.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/phy/phy-fsl-imx8mq-usb.c b/drivers/phy/phy-fsl-imx8mq-usb.c index 113bc5b192e1..3705546b056e 100644 --- a/drivers/phy/phy-fsl-imx8mq-usb.c +++ b/drivers/phy/phy-fsl-imx8mq-usb.c @@ -15,6 +15,8 @@ #define PHY_CTRL0 0x0 #define PHY_CTRL0_REF_SSP_EN BIT(2) +#define PHY_CTRL0_SSC_RANGE_MASK (7 << 21) +#define PHY_CTRL0_SSC_RANGE_4003PPM (0x2 << 21) #define PHY_CTRL1 0x4 #define PHY_CTRL1_RESET BIT(0) @@ -66,6 +68,8 @@ static void imx8mq_usb_phy_init(struct imx8mq_usb_phy *phy) value = readl(phy->base + PHY_CTRL0); value |= PHY_CTRL0_REF_SSP_EN; + value &= ~PHY_CTRL0_SSC_RANGE_MASK; + value |= PHY_CTRL0_SSC_RANGE_4003PPM; writel(value, phy->base + PHY_CTRL0); value = readl(phy->base + PHY_CTRL2); |