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authorWei WANG <wei_wang@realsil.com.cn>2013-09-13 17:45:43 +0800
committerLee Jones <lee.jones@linaro.org>2013-10-23 16:20:59 +0100
commit26b818511c6562ce372566c219a2ef1afea35fe6 (patch)
treec6fc61d336ddea8d72dd8b6deb6cd1ec435bc5b8 /drivers/mfd/rts5249.c
parent7902fe8cbc58ae2bd3dad1a8ecf28ce83b1ba3a8 (diff)
mfd: rtsx: Modify rts5249_optimize_phy
In some platforms, specially Thinkpad series, rts5249 won't be initialized properly. So we need adjust some phy parameters to improve the compatibility issue. It is a little different between simulation and real chip. We have no idea about which configuration is better before tape-out. We set default settings according to simulation, but need to tune these parameters after getting the real chip. I can't explain every change in detail here. The below information is just a rough description: PHY_REG_REV: Disable internal clkreq_tx, enable rx_pwst PHY_BPCR: No change, just turn the magic number to macro definitions PHY_PCR: Change OOBS sensitivity, from 60mV to 90mV PHY_RCR2: Control charge-pump current automatically PHY_FLD4: Use TX cmu reference clock PHY_RDR: Change RXDSEL from 30nF to 1.9nF PHY_RCR1: Change the duration between adp_st and asserting cp_en from 0.32 us to 0.64us PHY_FLD3: Adjust internal timers PHY_TUNE: Fine tune the regulator12 output voltage Signed-off-by: Wei WANG <wei_wang@realsil.com.cn> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/rts5249.c')
-rw-r--r--drivers/mfd/rts5249.c48
1 files changed, 46 insertions, 2 deletions
diff --git a/drivers/mfd/rts5249.c b/drivers/mfd/rts5249.c
index 3b835f593e35..573de7bfcced 100644
--- a/drivers/mfd/rts5249.c
+++ b/drivers/mfd/rts5249.c
@@ -130,13 +130,57 @@ static int rts5249_optimize_phy(struct rtsx_pcr *pcr)
{
int err;
- err = rtsx_pci_write_phy_register(pcr, PHY_REG_REV, 0xFE46);
+ err = rtsx_pci_write_phy_register(pcr, PHY_REG_REV,
+ PHY_REG_REV_RESV | PHY_REG_REV_RXIDLE_LATCHED |
+ PHY_REG_REV_P1_EN | PHY_REG_REV_RXIDLE_EN |
+ PHY_REG_REV_RX_PWST | PHY_REG_REV_CLKREQ_DLY_TIMER_1_0 |
+ PHY_REG_REV_STOP_CLKRD | PHY_REG_REV_STOP_CLKWR);
if (err < 0)
return err;
msleep(1);
- return rtsx_pci_write_phy_register(pcr, PHY_BPCR, 0x05C0);
+ err = rtsx_pci_write_phy_register(pcr, PHY_BPCR,
+ PHY_BPCR_IBRXSEL | PHY_BPCR_IBTXSEL |
+ PHY_BPCR_IB_FILTER | PHY_BPCR_CMIRROR_EN);
+ if (err < 0)
+ return err;
+ err = rtsx_pci_write_phy_register(pcr, PHY_PCR,
+ PHY_PCR_FORCE_CODE | PHY_PCR_OOBS_CALI_50 |
+ PHY_PCR_OOBS_VCM_08 | PHY_PCR_OOBS_SEN_90 |
+ PHY_PCR_RSSI_EN);
+ if (err < 0)
+ return err;
+ err = rtsx_pci_write_phy_register(pcr, PHY_RCR2,
+ PHY_RCR2_EMPHASE_EN | PHY_RCR2_NADJR |
+ PHY_RCR2_CDR_CP_10 | PHY_RCR2_CDR_SR_2 |
+ PHY_RCR2_FREQSEL_12 | PHY_RCR2_CPADJEN |
+ PHY_RCR2_CDR_SC_8 | PHY_RCR2_CALIB_LATE);
+ if (err < 0)
+ return err;
+ err = rtsx_pci_write_phy_register(pcr, PHY_FLD4,
+ PHY_FLD4_FLDEN_SEL | PHY_FLD4_REQ_REF |
+ PHY_FLD4_RXAMP_OFF | PHY_FLD4_REQ_ADDA |
+ PHY_FLD4_BER_COUNT | PHY_FLD4_BER_TIMER |
+ PHY_FLD4_BER_CHK_EN);
+ if (err < 0)
+ return err;
+ err = rtsx_pci_write_phy_register(pcr, PHY_RDR, PHY_RDR_RXDSEL_1_9);
+ if (err < 0)
+ return err;
+ err = rtsx_pci_write_phy_register(pcr, PHY_RCR1,
+ PHY_RCR1_ADP_TIME | PHY_RCR1_VCO_COARSE);
+ if (err < 0)
+ return err;
+ err = rtsx_pci_write_phy_register(pcr, PHY_FLD3,
+ PHY_FLD3_TIMER_4 | PHY_FLD3_TIMER_6 |
+ PHY_FLD3_RXDELINK);
+ if (err < 0)
+ return err;
+ return rtsx_pci_write_phy_register(pcr, PHY_TUNE,
+ PHY_TUNE_TUNEREF_1_0 | PHY_TUNE_VBGSEL_1252 |
+ PHY_TUNE_SDBUS_33 | PHY_TUNE_TUNED18 |
+ PHY_TUNE_TUNED12);
}
static int rts5249_turn_on_led(struct rtsx_pcr *pcr)