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>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/mfd/rtl8411.c b/drivers/mfd/rtl8411.c
index e4c1833154ea..52801351864d 100644
--- a/drivers/mfd/rtl8411.c
+++ b/drivers/mfd/rtl8411.c
@@ -452,6 +452,8 @@ void rtl8411_init_params(struct rtsx_pcr *pcr)
         pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
         pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
         pcr->aspm_en = ASPM_L1_EN;
+        pcr->tx_initial_phase = SET_CLOCK_PHASE(23, 7, 14);
+        pcr->rx_initial_phase = SET_CLOCK_PHASE(4, 3, 10);
 
         pcr->ic_version = rtl8411_get_ic_version(pcr);
         pcr->sd_pull_ctl_enable_tbl = rtl8411_sd_pull_ctl_enable_tbl;
@@ -471,6 +473,8 @@ void rtl8411b_init_params(struct rtsx_pcr *pcr)
         pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
         pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
         pcr->aspm_en = ASPM_L1_EN;
+        pcr->tx_initial_phase = SET_CLOCK_PHASE(23, 7, 14);
+        pcr->rx_initial_phase = SET_CLOCK_PHASE(4, 3, 10);
 
         pcr->ic_version = rtl8411_get_ic_version(pcr);