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emi: Make dqs/dqy values global (for debug)

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Make the dqs/dqy values available for printing in other functions, so
we can determine what values were chosen at startup.

Signed-off-by: Sean Cross <xobs@kosagi.com>
This commit is contained in:
Sean Cross 2015-02-05 12:59:40 +08:00
parent f15c7fb929
commit ef9d60df5c
1 changed files with 18 additions and 7 deletions
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25
emi.c
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@ -45,7 +45,7 @@ static int psram_test_run(uint32_t addr, uint32_t length, uint16_t pattern)
if (readl(EMI_CTRL_MBISTD) & EMI_CTRL_MBISTD_FINISHED) if (readl(EMI_CTRL_MBISTD) & EMI_CTRL_MBISTD_FINISHED)
break; break;
/* If it didn't finis, try again */ /* If it didn't finish, try again */
if (!(readl(EMI_CTRL_MBISTD) & EMI_CTRL_MBISTD_FINISHED)) if (!(readl(EMI_CTRL_MBISTD) & EMI_CTRL_MBISTD_FINISHED))
continue; continue;
@ -94,15 +94,23 @@ static void psram_set_ganged_dqs(uint8_t delay)
writel(vals, EMI_CTRL_IDLE); writel(vals, EMI_CTRL_IDLE);
} }
int dqy_delay;
int dqy_delay_upper;
int dqy_delay_lower;
int dqs_delay;
int dqs_delay_upper;
int dqs_delay_lower;
int calibrate_psram(void) int calibrate_psram(void)
{ {
int dqy_delay; dqy_delay = -1;
int dqy_delay_upper = -1; dqy_delay_upper = -1;
int dqy_delay_lower = -1; dqy_delay_lower = -1;
int dqs_delay; dqs_delay = -1;
int dqs_delay_upper = -1; dqs_delay_upper = -1;
int dqs_delay_lower = -1; dqs_delay_lower = -1;
for (dqy_delay = 0; dqy_delay < 32; dqy_delay++) { for (dqy_delay = 0; dqy_delay < 32; dqy_delay++) {
@ -141,6 +149,9 @@ int calibrate_psram(void)
} }
} }
if (-1 == dqs_delay_lower)
dqs_delay = -1;
if (-1 == dqs_delay_upper) if (-1 == dqs_delay_upper)
dqs_delay_upper = dqs_delay_lower; dqs_delay_upper = dqs_delay_lower;