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drm/bridge: ti-sn65dsi86: Add some 100 us delays 

The manual has always said that we need 100 us delays in a few
places. Though it hasn't seemed to be a big deal to skip these, let's
add them in case it makes something happier.

NOTE: this fixes no known issues but it seems good to make it right.

Fixes: a095f15c00 ("drm/bridge: add support for sn65dsi86 bridge driver")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210730084534.v2.3.I842d483139531aa4651da8338512fdf0171ff23c@changeid
This commit is contained in:
Douglas Anderson 2021-07-30 08:46:02 -07:00 committed by Sam Ravnborg
parent acb06210b0
commit e183bf31cf
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/bridge/ti-sn65dsi86.c
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@ -307,6 +307,9 @@ static int __maybe_unused ti_sn65dsi86_resume(struct device *dev)
return ret;
}
/* td2: min 100 us after regulators before enabling the GPIO */
usleep_range(100, 110);
gpiod_set_value(pdata->enable_gpio, 1);
/*
@ -1096,6 +1099,9 @@ static void ti_sn_bridge_pre_enable(struct drm_bridge *bridge)
if (!pdata->refclk)
ti_sn65dsi86_enable_comms(pdata);
/* td7: min 100 us after enable before DSI data */
usleep_range(100, 110);
}
static void ti_sn_bridge_post_disable(struct drm_bridge *bridge)