From 8d293f49b419dd394cdf4b7a501ad86b782efc3f Mon Sep 17 00:00:00 2001 From: Akshay Bhat Date: Tue, 12 Apr 2016 18:14:00 -0400 Subject: [PATCH] board: ge: bx50v3: Fix to meet LVDS display power on timing On a reset/reboot, the display power needs to be off for atleast 500ms before turning it back on. So add a delay to the boot process to meet the display timing requirement. Signed-off-by: Akshay Bhat Cc: Stefano Babic --- board/ge/bx50v3/bx50v3.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/board/ge/bx50v3/bx50v3.c b/board/ge/bx50v3/bx50v3.c index dcf51dd7d0..ff8f4d7b97 100644 --- a/board/ge/bx50v3/bx50v3.c +++ b/board/ge/bx50v3/bx50v3.c @@ -476,6 +476,13 @@ static void setup_display_bx50v3(void) struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR; + /* When a reset/reboot is performed the display power needs to be turned + * off for atleast 500ms. The boot time is ~300ms, we need to wait for + * an additional 200ms here. Unfortunately we use external PMIC for + * doing the reset, so can not differentiate between POR vs soft reset + */ + mdelay(200); + /* IPU1 DI0 clock is 480/7 = 68.5 MHz */ setbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV); -- 2.39.5