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https://git.yoctoproject.org/poky
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67 lines
2.1 KiB
Diff
67 lines
2.1 KiB
Diff
Message-ID: <c656a4d20809270046u341aec27k6d896d4b42e799d4@mail.gmail.com>
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Date: Sat, 27 Sep 2008 03:46:18 -0400
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From: "arun c" <arun.edarath@gmail.com>
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To: "Daniel Schaeffer" <daniel.schaeffer@timesys.com>
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Subject: Re: OMAP3EVM LCD red tint
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Hi Daniel Schaeffer
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On Fri, Sep 26, 2008 at 4:20 PM, Daniel Schaeffer
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<daniel.schaeffer@timesys.com> wrote:
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> Has anyone looked into why the LCD display on the OMAP3EVM is always tinted
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> red? I created a couple of color test images that I cat'ed to /dev/fb and it
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> looks like the blue color channel is completely ignored. I was testing on
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> v2.6.26-omap2 but is doesn't look like there have been any changes to the fb
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> driver since then so I'm assuming the issue is also present in the head of
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> the git tree.
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>
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> Regards,
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>
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> Daniel Schaeffer
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>
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Try the patch below(Remember that you may have to manually edit because
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this patch is against current HEAD)
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diff --git a/drivers/video/omap/lcd_omap3evm.c
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b/drivers/video/omap/lcd_omap3evm.c
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index a564ca5..821bafe 100644
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--- a/drivers/video/omap/lcd_omap3evm.c
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+++ b/drivers/video/omap/lcd_omap3evm.c
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@@ -44,6 +44,8 @@
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#define ENABLE_VDAC_DEV_GRP 0x20
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#define ENABLE_VPLL2_DEDICATED 0x05
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#define ENABLE_VPLL2_DEV_GRP 0xE0
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+#define TWL4030_VPLL2_DEV_GRP 0x33
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+#define TWL4030_VPLL2_DEDICATED 0x36
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#define TWL_LED_LEDEN 0x00
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#define TWL_PWMA_PWMAON 0x00
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@@ -86,12 +88,24 @@ static void omap3evm_panel_cleanup(struct lcd_panel *panel)
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static int omap3evm_panel_enable(struct lcd_panel *panel)
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{
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+ if (omap_rev > OMAP3430_REV_ES1_0) {
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+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
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+ ENABLE_VPLL2_DEDICATED, TWL4030_VPLL2_DEDICATED);
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+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
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+ ENABLE_VPLL2_DEV_GRP, TWL4030_VPLL2_DEV_GRP);
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+ }
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omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 0);
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return 0;
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}
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static void omap3evm_panel_disable(struct lcd_panel *panel)
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{
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+ if (omap_rev > OMAP3430_REV_ES1_0) {
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+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x0,
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+ TWL4030_VPLL2_DEDICATED);
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+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x0,
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+ TWL4030_VPLL2_DEV_GRP);
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+ }
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omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 1);
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}
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