From mboxrd@z Thu Jan 1 00:00:00 1970 From: ykk@rock-chips.com (Yakir Yang) Date: Fri, 7 Aug 2015 05:54:04 -0500 Subject: [PATCH v2 8/8] drm: bridge/analogix_dp: expand the delay time for hpd detect In-Reply-To: <1438943674-18191-1-git-send-email-ykk@rock-chips.com> References: <1438943674-18191-1-git-send-email-ykk@rock-chips.com> Message-ID: <1438944844-19243-1-git-send-email-ykk@rock-chips.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Some edp screen with no hpd signal would need some delay time to ensure that screen would be ready for work, so we can expand the delay time in hpd detect function, it works prefectly on my rk3288 sdk board. Signed-off-by: Yakir Yang --- Changes in v2: None drivers/gpu/drm/bridge/analogix_dp_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix_dp_core.c index efd810c..3ba10fa2 100644 --- a/drivers/gpu/drm/bridge/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix_dp_core.c @@ -71,7 +71,7 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp) return 0; timeout_loop++; - usleep_range(10, 11); + usleep_range(100, 110); } /* -- 1.9.1