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emmc: aign all data lines with latest data for HS200 busmode

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PD#170721: align all data lines with latest data for HS200 busmode

Change-Id: I94b07e6ae2e16a5dfd0c0dfafd4c9d45fe0b6d11
Signed-off-by: Long Yu <long.yu@amlogic.com>
This commit is contained in:
Long Yu
2018-07-27 19:34:19 +08:00
committed by Jianxin Pan
parent d230fcaff2
commit 370db27ea7
1 changed files with 22 additions and 2 deletions
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24
drivers/amlogic/mmc/aml_sd_emmc_v3.c
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@@ -1191,9 +1191,9 @@ int aml_emmc_hs200_timming(struct mmc_host *mmc)
{
struct amlsd_platform *pdata = mmc_priv(mmc);
struct amlsd_host *host = pdata->host;
u32 count = 0, delay1 = 0, delay2 = 0;
u32 count = 0, delay1 = 0, delay2 = 0, line_x = 0;
u32 dat = host->data->latest_dat;
int ret = 0, add = 0;
int ret = 0, add = 0, base, temp, result;
ret = aml_get_data_eyetest(mmc);
if (ret) {
@@ -1223,9 +1223,29 @@ int aml_emmc_hs200_timming(struct mmc_host *mmc)
writel(delay1, (host->base + SD_EMMC_DELAY1_V3));
delay2 = (count<<0)|(count<<6)|(count<<12);
writel(delay2, (host->base + SD_EMMC_DELAY2_V3));
update_all_line_eyetest(mmc);
pr_info("delay1: 0x%x, delay2: 0x%x, add:%d\n",
readl(host->base + SD_EMMC_DELAY1_V3),
readl(host->base + SD_EMMC_DELAY2_V3), add);
/* align all data */
base = fbinary(pdata->align[dat]);
delay1 = readl(host->base + SD_EMMC_DELAY1_V3);
delay2 = readl(host->base + SD_EMMC_DELAY2_V3);
for (line_x = 0; line_x < 8; line_x++) {
temp = fbinary(pdata->align[line_x]);
result = base - temp;
pr_debug("*****line_x: %d, result: %d\n",
line_x, result);
if (result < 0)
continue;
if (line_x < 5)
delay1 += result << (6 * line_x);
else
delay2 += result << (6 * (line_x - 5));
}
writel(delay1, (host->base + SD_EMMC_DELAY1_V3));
writel(delay2, (host->base + SD_EMMC_DELAY2_V3));
/* end */
count = fbinary(pdata->align[9]);
if (count <= pdata->count/4)