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sdhci: compare the busy deadline in microseconds 

The poll loops divided a 64-bit elapsed count by 1000 on every
iteration, which is a libgcc helper call on 32-bit targets. Compute
the timeout in microseconds once instead.
pull/862/head
Daniele Lacamera 2026-08-18 08:41:31 +02:00
parent 78ba84cc23
commit 7d46d3f3df
1 changed files with 5 additions and 4 deletions
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9
src/sdhci.c
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@ -627,20 +627,21 @@ static int sdhci_wait_busy(int check_dat0)
{
uint32_t status;
uint64_t start = hal_get_timer_us();
/* Compare in microseconds: a 64-bit division inside the poll loop
* pulls in a libgcc helper call on 32-bit targets. */
const uint64_t timeout_us = (uint64_t)SDHCI_WAIT_BUSY_TIMEOUT_MS * 1000U;
if (check_dat0) {
/* wait for DATA0 not busy */
while ((SDHCI_REG(SDHCI_SRS09) & SDHCI_SRS09_DAT0_LVL) == 0) {
if ((hal_get_timer_us() - start) / 1000 >
SDHCI_WAIT_BUSY_TIMEOUT_MS)
if (hal_get_timer_us() - start > timeout_us)
return -1;
}
}
/* wait for CMD13 */
while ((status = sdhci_cmd(MMC_CMD13_SEND_STATUS,
(g_rca << SD_RCA_SHIFT), SDHCI_RESP_R1)) == DEVICE_BUSY) {
if ((hal_get_timer_us() - start) / 1000 >
SDHCI_WAIT_BUSY_TIMEOUT_MS)
if (hal_get_timer_us() - start > timeout_us)
return -1;
}
return status;