diff options
| author | Timur Tabi <timur@codeaurora.org> | 2017-02-28 17:16:02 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-07 12:29:37 -0800 |
| commit | 57dacfedf856c475a10890c1f8ebcc1c63473cd1 (patch) | |
| tree | 8e85ed4efac5c49ae8b32719763f1394a602dfc5 /drivers/net/ethernet/qualcomm | |
| parent | d9c0eb0c91121c2d32333a457376da505fc0ffa7 (diff) | |
| download | linux-0-day-57dacfedf856c475a10890c1f8ebcc1c63473cd1.tar.gz linux-0-day-57dacfedf856c475a10890c1f8ebcc1c63473cd1.tar.xz | |
net: qcom/emac: optimize QDF2400 SGMII RX/TX impedence values
Adjust the impedance values of the RX and TX lanes in the SGMII block
so that they are closer to optimal values.
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qualcomm')
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2400.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2400.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2400.c index f62c215be7798..7116be485e612 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2400.c +++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2400.c @@ -26,6 +26,7 @@ /* SGMII digital lane registers */ #define EMAC_SGMII_LN_DRVR_CTRL0 0x000C +#define EMAC_SGMII_LN_DRVR_CTRL1 0x0010 #define EMAC_SGMII_LN_DRVR_TAP_EN 0x0018 #define EMAC_SGMII_LN_TX_MARGINING 0x001C #define EMAC_SGMII_LN_TX_PRE 0x0020 @@ -48,6 +49,7 @@ #define EMAC_SGMII_LN_RX_EN_SIGNAL 0x02AC #define EMAC_SGMII_LN_RX_MISC_CNTRL0 0x02B8 #define EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV 0x02C8 +#define EMAC_SGMII_LN_RX_RESECODE_OFFSET 0x02CC /* SGMII digital lane register values */ #define UCDR_STEP_BY_TWO_MODE0 BIT(7) @@ -73,6 +75,8 @@ #define CML_GEAR_MODE(x) (((x) & 7) << 3) #define CML2CMOS_IBOOST_MODE(x) ((x) & 7) +#define RESCODE_OFFSET(x) ((x) & 0x1f) + #define MIXER_LOADB_MODE(x) (((x) & 0xf) << 2) #define MIXER_DATARATE_MODE(x) ((x) & 3) @@ -159,6 +163,8 @@ static const struct emac_reg_write sgmii_laned[] = { {EMAC_SGMII_LN_PARALLEL_RATE, PARALLEL_RATE_MODE0(1)}, {EMAC_SGMII_LN_TX_BAND_MODE, BAND_MODE0(1)}, {EMAC_SGMII_LN_RX_BAND, BAND_MODE0(2)}, + {EMAC_SGMII_LN_DRVR_CTRL1, RESCODE_OFFSET(7)}, + {EMAC_SGMII_LN_RX_RESECODE_OFFSET, RESCODE_OFFSET(9)}, {EMAC_SGMII_LN_LANE_MODE, LANE_MODE(26)}, {EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0, CDR_PD_SEL_MODE0(2) | EN_DLL_MODE0 | EN_IQ_DCC_MODE0 | EN_IQCAL_MODE0}, |