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Commit 0b07cf66 authored by Vatsal Bucha's avatar Vatsal Bucha Committed by Gerrit - the friendly Code Review server
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soc: swr-mstr: Add delay between fifo writes to avoid overflow/underflow 



Overflow/Underflow errors are observed sometimes while doing fifo write.
Add delay between writes to resolve error.

Change-Id: Id460e17753001a0dd52acd01a181d91132c36048
Signed-off-by: default avatarVatsal Bucha <vbucha@codeaurora.org>
parent d155d7f5

soc/swr-mstr-ctrl.c

+2 −2
Original line number Diff line number Diff line
@@ -592,10 +592,10 @@ static int swr_master_bulk_write(struct swr_mstr_ctrl *swrm, u32 *reg_addr, 
		for (i = 0; i < length; i++) {

		/* wait for FIFO WR command to complete to avoid overflow */

		/*

		 * Reduce sleep from 100us to 10us to meet KPIs

		 * Reduce sleep from 100us to 50us to meet KPIs

		 * This still meets the hardware spec

		 */

			usleep_range(10, 12);

			usleep_range(50, 55);

			swr_master_write(swrm, reg_addr[i], val[i]);

		}

		mutex_unlock(&swrm->iolock);