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path: root/drivers/gpu/drm/msm/dsi/dsi_host.c
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Diffstat (limited to 'drivers/gpu/drm/msm/dsi/dsi_host.c')
-rw-r--r--drivers/gpu/drm/msm/dsi/dsi_host.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 663ff9f4fac9..1e7b1be25bb0 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -26,6 +26,8 @@
#include "dsi_cfg.h"
#include "msm_kms.h"
+#define DSI_RESET_TOGGLE_DELAY_MS 20
+
static int dsi_get_version(const void __iomem *base, u32 *major, u32 *minor)
{
u32 ver;
@@ -986,7 +988,7 @@ static void dsi_sw_reset(struct msm_dsi_host *msm_host)
wmb(); /* clocks need to be enabled before reset */
dsi_write(msm_host, REG_DSI_RESET, 1);
- wmb(); /* make sure reset happen */
+ msleep(DSI_RESET_TOGGLE_DELAY_MS); /* make sure reset happen */
dsi_write(msm_host, REG_DSI_RESET, 0);
}
@@ -1396,7 +1398,7 @@ static void dsi_sw_reset_restore(struct msm_dsi_host *msm_host)
/* dsi controller can only be reset while clocks are running */
dsi_write(msm_host, REG_DSI_RESET, 1);
- wmb(); /* make sure reset happen */
+ msleep(DSI_RESET_TOGGLE_DELAY_MS); /* make sure reset happen */
dsi_write(msm_host, REG_DSI_RESET, 0);
wmb(); /* controller out of reset */
dsi_write(msm_host, REG_DSI_CTRL, data0);