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emmc: clear line_dly on calibration

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PD#148637: clear line_delay on every line calibration,
so any line's line_delay will not interfere with each other.

Change-Id: I784f66ab9df111b886ab0e45fa007f3bb2dc111e
Signed-off-by: Nan Li <nan.li@amlogic.com>
This commit is contained in:
Nan Li
2017-08-01 13:28:57 +08:00
committed by Jianxin Pan
parent 3863e6688f
commit fa3d073d09
1 changed files with 4 additions and 1 deletions
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5
drivers/amlogic/mmc/aml_sd_emmc.c
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@@ -191,6 +191,9 @@ static int aml_cali_auto(struct mmc_host *mmc, struct cali_data *c_data)
pdata->c_ctrl.line_x = line_x;
/* for each delay index! */
for (dly_tmp = 0; dly_tmp < MAX_DELAY_CNT; dly_tmp++) {
max_cali_count = 0;
max_cali_i = 0;
line_delay = 0;
line_delay = dly_tmp << (4 * line_x);
writel(line_delay, host->base + SD_EMMC_DELAY);
pdata->caling = 1;
@@ -492,7 +495,6 @@ static int aml_sd_emmc_execute_calibration(struct mmc_host *mmc,
u8 i;
#endif
memset(&c_data, 0, sizeof(struct cali_data));
#ifdef SD_EMMC_CLK_CTRL
vclk = readl(host->base + SD_EMMC_CLOCK);
clk_div_tmp = clkc->div;
@@ -509,6 +511,7 @@ static int aml_sd_emmc_execute_calibration(struct mmc_host *mmc,
pdata->c_ctrl.max_index = (vclk & 0x3f) - 1;
_cali_retry:
memset(&c_data, 0, sizeof(struct cali_data));
c_data.base_index_min = pdata->c_ctrl.max_index + 1;
c_data.base_index_max = 0;
pr_info("%s: trying cali %d-th time(s)\n",