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authorHans de Goede <hdegoede@redhat.com>2014-12-20 13:51:16 +0100
committerHans de Goede <hdegoede@redhat.com>2015-01-14 14:56:38 +0100
commit876aaafdbd5eb2764b6e921306c7d37f9c9f3f09 (patch)
treeeecd31bd2ee1fa7856574fbd46f45880df342692 /arch/arm
parent40f1b87ce7f84a7ff74fd519dc2c75b333068815 (diff)
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sunxi: video: Set input sync enable
Add a write to the "unknown" (*) register to enable auto input sync, when initially adding sunxi hdmi output support this magic write from the android kernel code was missed, causing lcdc -> hdmi encoder sync problems. With this write added, we can drop the modesetting retries and the extra delays added to work around these sync problems. With the retries dropped there also is no need to 0 all the enable flags at the beginning of the modeset, as they are initialized to 0 already by engines_init. *) "unknown" is the actual name of this register in the android kernel sources Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/include/asm/arch-sunxi/display.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-sunxi/display.h b/arch/arm/include/asm/arch-sunxi/display.h
index 838b217..00e3466 100644
--- a/arch/arm/include/asm/arch-sunxi/display.h
+++ b/arch/arm/include/asm/arch-sunxi/display.h
@@ -236,6 +236,7 @@ struct sunxi_hdmi_reg {
#define SUNXI_HDMI_PKT_CTRL0 0x00000f21
#define SUNXI_HDMI_PKT_CTRL1 0x0000000f
+#define SUNXI_HDMI_UNKNOWN_INPUT_SYNC 0x08000000
#ifdef CONFIG_MACH_SUN6I
#define SUNXI_HMDI_DDC_CTRL_ENABLE (1 << 0)