diff options
| author |   Wei WANG <wei_wang@realsil.com.cn> | 2013-08-21 09:46:25 +0800 |
|---|---|---|
| committer |   Samuel Ortiz <sameo@linux.intel.com> | 2013-08-30 14:24:07 +0200 |
| commit | 84d72f9cc21d6e41c620dd34b8248734cd02d995 (patch) | |
| tree | f84a291737af9885fb573adc4844fc4e0c0c74c5 /drivers/mfd/rts5227.c | |
| parent | Merge tag 'mfd-lee-3.12-1' of git://git.linaro.org/people/ljones/mfd (diff) | |
| download | linux-dev-84d72f9cc21d6e41c620dd34b8248734cd02d995.tar.xz linux-dev-84d72f9cc21d6e41c620dd34b8248734cd02d995.zip | |
mfd: mmc: rtsx: Change default tx phase
The default phase can meet most cards' requirement, but it is not the
optimal one. In some extreme situation, the rx phase point produced by
the following tuning process will drift quite a distance.
Before tuning UHS card, this patch will set a more proper initial tx
phase point, which is calculated from statistic data, and can achieve
a much better tx signal quality.
Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/rts5227.c')
| -rw-r--r-- | drivers/mfd/rts5227.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mfd/rts5227.c b/drivers/mfd/rts5227.c index d7cae82720a4..c001151378b2 100644 --- a/drivers/mfd/rts5227.c +++ b/drivers/mfd/rts5227.c @@ -291,6 +291,8 @@ void rts5227_init_params(struct rtsx_pcr *pcr) pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B; pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B; pcr->aspm_en = ASPM_L1_EN; + pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 15); + pcr->rx_initial_phase = SET_CLOCK_PHASE(30, 7, 7); pcr->sd_pull_ctl_enable_tbl = rts5227_sd_pull_ctl_enable_tbl; pcr->sd_pull_ctl_disable_tbl = rts5227_sd_pull_ctl_disable_tbl; |