On Sun, 13 Feb 2022 at 03:27, Marek Vasut marex@denx.de wrote:
In rare cases, the bridge may not start up correctly, which usually leads to no display output. In case this happens, warn about it in the kernel log.
Signed-off-by: Marek Vasut marex@denx.de Cc: Jagan Teki jagan@amarulasolutions.com Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Linus Walleij linus.walleij@linaro.org Cc: Robert Foss robert.foss@linaro.org Cc: Sam Ravnborg sam@ravnborg.org Cc: dri-devel@lists.freedesktop.org
drivers/gpu/drm/bridge/ti-sn65dsi83.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c b/drivers/gpu/drm/bridge/ti-sn65dsi83.c index 19daaddd29a41..1d7c154ea1d79 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c @@ -488,6 +488,11 @@ static void sn65dsi83_atomic_enable(struct drm_bridge *bridge, /* Clear all errors that got asserted during initialization. */ regmap_read(ctx->regmap, REG_IRQ_STAT, &pval); regmap_write(ctx->regmap, REG_IRQ_STAT, pval);
usleep_range(10000, 12000);regmap_read(ctx->regmap, REG_IRQ_STAT, &pval);if (pval)dev_err(ctx->dev, "Unexpected link status 0x%02x\n", pval);}
static void sn65dsi83_atomic_disable(struct drm_bridge *bridge,
2.34.1
Reviewed-by: Robert Foss robert.foss@linaro.org