diff options
| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2014-01-26 17:43:41 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2014-01-26 17:43:41 +0100 |
| commit | 2939f05630869e46c664534cfd652f9560ba7a47 (patch) | |
| tree | 1ed6d6b129a0f9f1ad1cd00397015bf31ec4c94e | |
| parent | 0a6c0d28e0944151a2fa03529ca88b5b4612c2e8 (diff) | |
apalis_imx6: video dac oe polarity hack
The home-brew resistor video DAC on Apalis iMX6 uses DI0_PIN15 as
output enable but with reversed polarity.
720p as well as 1080p also work albeit the later some 20 odd pixels
shifted towards the top.
| -rw-r--r-- | arch/arm/configs/apalis_imx6_defconfig | 2 | ||||
| -rw-r--r-- | drivers/video/mxc/mxc_ipuv3_fb.c | 8 |
2 files changed, 8 insertions, 2 deletions
diff --git a/arch/arm/configs/apalis_imx6_defconfig b/arch/arm/configs/apalis_imx6_defconfig index 146447446173..559b0ac47dda 100644 --- a/arch/arm/configs/apalis_imx6_defconfig +++ b/arch/arm/configs/apalis_imx6_defconfig @@ -62,7 +62,7 @@ CONFIG_COMPACTION=y CONFIG_KSM=y CONFIG_ZBOOT_ROM_TEXT=0x0 CONFIG_ZBOOT_ROM_BSS=0x0 -CONFIG_CMDLINE="ip=:::::eth0:on root=/dev/nfs rw netdevwait console=tty1 console=ttymxc0,115200n8 fbcon=map:1 fec_mac=00:14:2d:00:00:00" +CONFIG_CMDLINE="ip=:::::eth0:on root=/dev/nfs rw netdevwait console=tty1 console=ttymxc0,115200n8 fbcon=map:1 fec_mac=00:14:2d:00:00:00 video=mxcfb0:dev=lcd,640x480M@60,if=RGB565 fbmem=10M" CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_DEFAULT_GOV_INTERACTIVE=y CONFIG_CPU_FREQ_GOV_PERFORMANCE=y diff --git a/drivers/video/mxc/mxc_ipuv3_fb.c b/drivers/video/mxc/mxc_ipuv3_fb.c index 15db4c92925c..5f2b1bbedff7 100644 --- a/drivers/video/mxc/mxc_ipuv3_fb.c +++ b/drivers/video/mxc/mxc_ipuv3_fb.c @@ -589,7 +589,13 @@ static int mxcfb_set_par(struct fb_info *fbi) sig_cfg.clk_pol = true; if (fbi->var.sync & FB_SYNC_DATA_INVERT) sig_cfg.data_pol = true; - if (!(fbi->var.sync & FB_SYNC_OE_LOW_ACT)) + if ( +/* Hack: The home-brew resistor video DAC on Apalis iMX6 uses DI0_PIN15 as + output enable but with reversed polarity. */ +#ifndef CONFIG_MACH_APALIS_IMX6 + ! +#endif + (fbi->var.sync & FB_SYNC_OE_LOW_ACT)) sig_cfg.enable_pol = true; if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN) sig_cfg.clkidle_en = true; |