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board: ge: bx50v3: Fix to meet LVDS display power on timing

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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 <akshay.bhat@timesys.com>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Akshay Bhat 2016-04-12 18:14:00 -04:00 committed by Stefano Babic
parent 54971ac6de
commit 8d293f49b4
1 changed files with 7 additions and 0 deletions
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7
board/ge/bx50v3/bx50v3.c
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@ -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);