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Commit 1feb2a31 authored by Skylar Chang's avatar Skylar Chang
Browse files

msm: gsi: add 1ms delay before reset 



As part of GSI reset workaround, a 1ms sleep needs to be added
between the first reset command and the second one.

Change-Id: I6131aa646edfd6192e4f0895a7cc97728d6f7536
CRs-Fixed: 1079245
Acked-by: default avatarAdy Abraham <adya@qti.qualcomm.com>
Signed-off-by: default avatarSkylar Chang <chiaweic@codeaurora.org>
parent 5c4400be

drivers/platform/msm/gsi/gsi.c

+4 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/module.h>

#include <linux/msm_gsi.h>

#include <linux/platform_device.h>

#include <linux/delay.h>

#include "gsi.h"

#include "gsi_reg.h"
@@ -26,6 +27,8 @@ 
#define GSI_MHI_ER_START 10

#define GSI_MHI_ER_END 16



#define GSI_RESET_WA_MIN_SLEEP 1000

#define GSI_RESET_WA_MAX_SLEEP 2000

static const struct of_device_id msm_gsi_match[] = {

	{ .compatible = "qcom,msm_gsi", },

	{ },
@@ -1982,6 +1985,7 @@ int gsi_reset_channel(unsigned long chan_hdl) 


	/* workaround: reset GSI producers again */

	if (ctx->props.dir == GSI_CHAN_DIR_FROM_GSI && !reset_done) {

		usleep_range(GSI_RESET_WA_MIN_SLEEP, GSI_RESET_WA_MAX_SLEEP);

		reset_done = true;

		goto reset;

	}