From 75dbbbfdf36ac01d56418a1e47ed30deeb6f72ec Mon Sep 17 00:00:00 2001 From: Nikita Kiryanov Date: Thu, 23 Jul 2015 17:19:28 +0300 Subject: [PATCH] arm: mx6: cm-fx6: map HDMI to IPU1 DI0 explicitly U-Boot does not explicitly assign the display to an IPU interface. Instead, it relies on the power-on default of DI0. Since the kernel reassigns HDMI display to DI1, after a warm reset the HDMI display no longer works in U-Boot. Fix this by explicitly assigning HDMI to IPU1 DI0 in U-Boot. Cc: Stefano Babic Cc: Igor Grinberg Signed-off-by: Nikita Kiryanov Acked-by: Igor Grinberg --- board/compulab/cm_fx6/cm_fx6.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c index 7a1bbafaa5..b500f916a0 100644 --- a/board/compulab/cm_fx6/cm_fx6.c +++ b/board/compulab/cm_fx6/cm_fx6.c @@ -83,6 +83,7 @@ size_t display_count = ARRAY_SIZE(displays); static void cm_fx6_setup_display(void) { struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; int reg; enable_ipu_clock(); @@ -90,6 +91,7 @@ static void cm_fx6_setup_display(void) reg = __raw_readl(&mxc_ccm->CCGR3); reg |= MXC_CCM_CCGR3_IPU1_IPU_DI0_MASK; writel(reg, &mxc_ccm->CCGR3); + clrbits_le32(&iomuxc_regs->gpr[3], MXC_CCM_CCGR3_IPU1_IPU_DI0_MASK); } #else static inline void cm_fx6_setup_display(void) {} -- 2.25.1