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-rw-r--r--src/mainboard/google/pit/mainboard.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mainboard/google/pit/mainboard.c b/src/mainboard/google/pit/mainboard.c
index 28704677a6..d0230e26f1 100644
--- a/src/mainboard/google/pit/mainboard.c
+++ b/src/mainboard/google/pit/mainboard.c
@@ -326,6 +326,15 @@ static void mainboard_init(device_t dev)
fb_addr = cbmem_find(CBMEM_ID_CONSOLE);
set_vbe_mode_info_valid(&edid, (uintptr_t)fb_addr);
+ /*
+ * The reset value for FIMD SYSMMU register MMU_CTRL:0x14640000
+ * should be 0 according to the datasheet, but has experimentally
+ * been found to come up as 3. This means FIMD SYSMMU is on by
+ * default on Exynos5420. For now we are disabling FIMD SYSMMU.
+ */
+ writel(0x0, (void *)0x14640000);
+ writel(0x0, (void *)0x14680000);
+
lcd_vdd();
parade_dp_bridge_setup();