mmc: zynq_sdhci: Change granularity of timeout to 1us

The timeout used in 'commit b6f44082d5cd ("mmc: zynq_sdhci: Wait
till sd card detect state is stable")' workaround is 1000ms at a
granularity of 1msec. Change it to 1usec, to not waste time incase the
cd is stable.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/f008d2bcf864702a01564789f14f9cdecb8acd45.1645625609.git.michal.simek@xilinx.com

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index f4d69a2..7d62d05 100644 (file)
--- a/drivers/mmc/zynq_sdhci.c
+++ b/drivers/mmc/zynq_sdhci.c
@@ -770,11 +770,11 @@ static int arasan_sdhci_probe(struct udevice *dev)
         * 1000msec till the card detect state gets stable.
         */
        if (IS_ENABLED(CONFIG_ARCH_VERSAL)) {
-               u32 timeout = 1000;
+               u32 timeout = 1000000;
 
                while (((sdhci_readl(host, SDHCI_PRESENT_STATE) &
                         SDHCI_CARD_STATE_STABLE) == 0) && timeout) {
-                       mdelay(1);
+                       udelay(1);
                        timeout--;
                }
                if (!timeout) {