evie/android_kernel_oneplus_msm8998
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msm: gsi: add 1ms delay before reset

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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: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>
This commit is contained in:
Skylar Chang 2016-10-17 10:01:36 -07:00
parent c6b7d9674c
commit 22ec2af43c
1 changed files with 4 additions and 0 deletions
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4
drivers/platform/msm/gsi/gsi.c
View file

@ -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 @@ reset:
/* 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;
}