From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 3/8] pxa_lcd: allow L_BIAS line to be unused
Date: Mon, 8 Apr 2013 07:28:06 +0200 [thread overview]
Message-ID: <201304080728.06230.marex@denx.de> (raw)
In-Reply-To: <1365352865-2137-4-git-send-email-mikedunn@newsguy.com>
Dear Mike Dunn,
> This patch adds a config option CONFIG_SYS_LCD_PXA_NO_L_BIAS, which causes
> the lcd controller initialization code to leave as an ordinary gpio the
> line that is typically configured as the lcd L_BIAS alternate function
> (this is the gpio 77 line).
>
> For some reason (I don't have a datasheet), the lcd device on the
> palmtreo680 board does not use the L_BIAS line. PalmOS does not configure
> the gpio 77 line for the L_BIAS alternate function, and if it is
> configured as such, the lcd does not work.
>
> Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
The other option would be to pull the GPIO setup from the driver. That'd be the
best.
Best regards,
Marek Vasut
next prev parent reply other threads:[~2013-04-08 5:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-07 16:40 [U-Boot] [PATCH 0/8] palm treo 680 smartphone board support Mike Dunn
2013-04-07 16:40 ` [U-Boot] [PATCH 1/8] pxa_lcd: add the ACX544AKN lcd device Mike Dunn
2013-04-07 16:40 ` [U-Boot] [PATCH 2/8] pxa_lcd: make lcd_enable() a weak pointer Mike Dunn
2013-04-07 19:08 ` Fabio Estevam
2013-04-08 17:49 ` Mike Dunn
2013-04-07 16:41 ` [U-Boot] [PATCH 3/8] pxa_lcd: allow L_BIAS line to be unused Mike Dunn
2013-04-08 5:28 ` Marek Vasut [this message]
2013-04-09 17:02 ` Mike Dunn
2013-04-07 16:41 ` [U-Boot] [PATCH 4/8] pxa27x_udc: remove call to unimplemented set_GPIO_mode() Mike Dunn
2013-04-07 16:41 ` [U-Boot] [PATCH 5/8] arm: bootm: call udc_disable() before booting linux Mike Dunn
2013-04-08 5:29 ` Marek Vasut
2013-04-07 16:41 ` [U-Boot] [PATCH 6/8] lib: import bitrev library from linux kernel Mike Dunn
2013-04-08 6:23 ` Marek Vasut
2013-04-08 16:46 ` Mike Dunn
2013-04-08 7:38 ` Wolfgang Denk
2013-04-07 16:41 ` [U-Boot] [PATCH 7/8] mtd: nand: add driver for diskonchip g4 nand flash Mike Dunn
2013-04-08 6:25 ` Marek Vasut
2013-04-08 17:10 ` Mike Dunn
2013-04-08 17:26 ` Marek Vasut
2013-04-09 0:59 ` Scott Wood
2013-04-09 15:36 ` Mike Dunn
2013-04-07 16:41 ` [U-Boot] [PATCH 8/8] board support for palm treo 680 Mike Dunn
2013-04-08 6:27 ` Marek Vasut
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