Commits
Liu Ying committed 41067adb064
ENGR00240740-3 IPUv3 fb:Workaround bootup ipu error Enabling IPU hsp clock in mxcfb_probe() context by calling ipu_init_channel() can avoid the IPU display channel(setup in bootloader) from being damaged by some IPU common driver APIS which enable/disable IPU hsp clock when doing driver probe. However, somehow, after LDO bypass patch set is pushed to kernel, this clock enablement can trigger IPU errors (IPU_INT_STAT_5 - 0x00800000/IPU_INT_STAT_10 - 0x00100000) and a display flash. A workaround is to enable IPU hsp clock when we are at ipu_probe() context, which is earlier than mxcfb_probe() context, and then to disable(cleanup) the clock once more when fb_set_par() is triggered by the user for the first time. This patch updates the comment for ipu_init_channel() and ipu_enable_channel() in mxcfb_probe() context, and disables ipu hsp clock when fb_set_par() is triggered by the user for the first time. Signed-off-by: Liu Ying <Ying.Liu@freescale.com> (cherry picked from commit 5528e415659a60f3c6d67db96692befb3302a58a)