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From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 0/19] tegra: Add display driver and LCD support for Seaboard
Date: Wed, 13 Jun 2012 17:09:08 -0600	[thread overview]
Message-ID: <4FD91D94.4040604@wwwdotorg.org> (raw)
In-Reply-To: <4FD91C2B.4010408@wwwdotorg.org>

On 06/13/2012 05:03 PM, Stephen Warren wrote:
> On 06/13/2012 04:57 PM, Stephen Warren wrote:
>> On 06/13/2012 10:19 AM, Simon Glass wrote:
>>> This series adds support for the Tegra2x's display peripheral. This
>>> supports the LCD display on Seaboard and we use this to enable console
>>> output in U-Boot on the LCD.
>>
>> Simon,
>>
>> This series doesn't apply to u-boot-tegra/master cleanly; there are a
>> couple trivial conflicts in arch/arm/cpu/armv7/tegra2/Makefile to
>> resolve, but I had to apply the final patch completely by hand.
>>
>> When I run the resultant binary, I see the LCD backlight turn on, but
>> the image on the LCD is wrong; it starts completely black without any
>> text showing, then slowly fills in to white/gray with many horizontal
>> and vertical black lines; I guess the LCD timing is incorrect - are
>> there multiple different LCD models? Note that I am using a real
>> Seaboard not a Springbank for this test.
> 
> Oh, false alarm on this second point - the LCD is screwed up after using
> nvflash to flash the device, but when power-cycling it rather than just
> resetting it, the LCD works fine. I guess this means the driver is not
> initializing something that nvflash changed, and relying on a power-on
> default. I suppose it might not be worth fixing that given it works from
> cold power on.

Oops, there is a problem - executing "reset" in U-Boot, or "reboot" from
the kernel (one without any display support at least; mainline Linux)
will get into the "bad LCD" state too. So, I guess there is something
that needs to be fixed.

Sorry for the back-to-back emails.

  reply	other threads:[~2012-06-13 23:09 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-13 16:19 [U-Boot] [PATCH v2 0/19] tegra: Add display driver and LCD support for Seaboard Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 01/19] Add gpio_request() to asm-generic header Simon Glass
2012-09-21 19:30   ` Anatolij Gustschin
2012-09-27 20:58     ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 05/19] tegra: Use const for pinmux_config_pingroup/table() Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 06/19] tegra: Add display support to funcmux Simon Glass
2012-06-14 23:24   ` Stephen Warren
2012-07-11  3:48     ` Simon Glass
2012-06-13 16:19 ` [PATCH v2 07/19] tegra: fdt: Add LCD definitions for Tegra Simon Glass
2012-06-13 16:19   ` [U-Boot] " Simon Glass
2012-06-14 23:32   ` Stephen Warren
2012-06-14 23:32     ` [U-Boot] " Stephen Warren
2012-07-11  4:44     ` Simon Glass
2012-07-11  4:44       ` [U-Boot] " Simon Glass
2012-07-11  5:48       ` Thierry Reding
2012-07-11  5:48         ` [U-Boot] " Thierry Reding
2012-07-12  8:21         ` Simon Glass
2012-07-12  8:21           ` [U-Boot] " Simon Glass
2012-07-12  8:40           ` Thierry Reding
2012-07-12  8:40             ` [U-Boot] " Thierry Reding
2012-07-12  9:22             ` Alex Courbot
2012-07-12  9:22               ` [U-Boot] " Alex Courbot
2012-06-13 16:19 ` [U-Boot] [PATCH v2 08/19] tegra: Add support for PWFM Simon Glass
2012-06-14 23:35   ` Stephen Warren
2012-07-11  4:45     ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 09/19] tegra: Add SOC support for display/lcd Simon Glass
2012-06-14 23:39   ` Stephen Warren
     [not found]     ` <CAPnjgZ2bqPx+dHD9m+NuFrAbBeP1PQxHokLMwvD1-3OnC6ZHtg@mail.gmail.com>
2012-07-11  5:12       ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 10/19] tegra: Add LCD driver Simon Glass
2012-06-14 23:45   ` Stephen Warren
2012-07-11  4:56     ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 11/19] tegra: Add LCD support to Nvidia boards Simon Glass
2012-06-14 23:47   ` Stephen Warren
2012-07-11  4:58     ` Simon Glass
2012-07-23 20:25       ` Stephen Warren
2012-09-27 19:15         ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 12/19] arm: Add control over cachability of memory regions Simon Glass
2012-06-14 23:49   ` Stephen Warren
2012-07-11  5:01     ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 13/19] lcd: Add CONFIG_LCD_ALIGNMENT to select frame buffer alignment Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 14/19] lcd: Add support for flushing LCD fb from dcache after update Simon Glass
2012-06-14 23:51   ` Stephen Warren
2012-07-11  5:06     ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 15/19] tegra: Align LCD frame buffer to section boundary Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 16/19] tegra: Support control of cache settings for LCD Simon Glass
     [not found] ` <1339604395-6621-1-git-send-email-sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
2012-06-13 16:19   ` [PATCH v2 02/19] fdt: Add debugging to fdtdec_get_int/addr() Simon Glass
2012-06-13 16:19     ` [U-Boot] " Simon Glass
2012-09-21 19:39     ` Anatolij Gustschin
2012-09-21 19:56       ` Anatolij Gustschin
2012-06-13 16:19   ` [PATCH v2 03/19] fdt: Add function to look up a phandle's register address Simon Glass
2012-06-13 16:19     ` [U-Boot] " Simon Glass
2012-06-14 23:17     ` Stephen Warren
2012-06-14 23:17       ` [U-Boot] " Stephen Warren
2012-07-11  5:10       ` Simon Glass
2012-07-11  5:10         ` [U-Boot] " Simon Glass
2012-06-13 16:19   ` [PATCH v2 04/19] fdt: Add header guard to fdtdec.h Simon Glass
2012-06-13 16:19     ` [U-Boot] " Simon Glass
2012-06-13 16:19   ` [PATCH v2 17/19] tegra: fdt: Add LCD definitions for Seaboard Simon Glass
2012-06-13 16:19     ` [U-Boot] " Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 18/19] lcd: Add CONSOLE_SCROLL_LINES option to speed console Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 19/19] tegra: Enable display/lcd support on Seaboard Simon Glass
2012-06-13 22:57 ` [U-Boot] [PATCH v2 0/19] tegra: Add display driver and LCD support for Seaboard Stephen Warren
2012-06-13 23:03   ` Stephen Warren
2012-06-13 23:09     ` Stephen Warren [this message]
2012-06-25 21:03   ` Tom Warren
2012-06-27  5:11     ` Simon Glass
2012-07-11 10:04       ` Simon Glass

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