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colibri_t20: add lcd display support 

Add LCD display support defaulting to VESA VGA resolution. Different
resolutions configurable via device tree.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Marcel Ziswiler 2015-08-06 00:47:02 +02:00 committed by Tom Warren
parent a7841e7def
commit b2ea19b522
3 changed files with 57 additions and 0 deletions
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29
arch/arm/dts/tegra20-colibri.dts
View File

@ -17,6 +17,17 @@
sdhci0 = "/sdhci@c8000600";
};
host1x {
status = "okay";
dc@54200000 {
status = "okay";
rgb {
status = "okay";
nvidia,panel = <&lcd_panel>;
};
};
};
usb@c5000000 {
dr_mode = "otg";
};
@ -46,4 +57,22 @@
cd-gpios = <&gpio TEGRA_GPIO(C, 7) GPIO_ACTIVE_LOW>;
bus-width = <4>;
};
lcd_panel: panel {
clock = <25175000>;
xres = <640>;
yres = <480>;
left-margin = <48>; /* horizontal back porch */
right-margin = <16>; /* horizontal front porch */
hsync-len = <96>;
lower-margin = <11>; /* vertical front porch */
upper-margin = <31>; /* vertical back porch */
vsync-len = <2>;
hsync-active-high;
vsync-active-high;
nvidia,bits-per-pixel = <16>;
nvidia,pwm = <&pwm 0 0>;
nvidia,backlight-enable-gpios = <&gpio TEGRA_GPIO(T, 4) GPIO_ACTIVE_HIGH>;
nvidia,panel-timings = <0 0 0 0>;
};
};

18
board/toradex/colibri_t20/colibri_t20.c
View File

@ -75,3 +75,21 @@ void pin_mux_usb(void)
pinmux_tristate_disable(PMUX_PINGRP_SPIG);
}
#endif
#ifdef CONFIG_VIDEO_TEGRA
/*
* Routine: pin_mux_display
* Description: setup the pin muxes/tristate values for the LCD interface)
*/
void pin_mux_display(void)
{
/*
* Manually untristate BL_ON (PT4 - SODIMM 71) as specified through
* device-tree
*/
pinmux_tristate_disable(PMUX_PINGRP_DTA);
pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_PWM);
pinmux_tristate_disable(PMUX_PINGRP_SDC);
}
#endif

10
include/configs/colibri_t20.h
View File

@ -43,6 +43,16 @@
/* General networking support */
#define CONFIG_CMD_DHCP
/* LCD support */
#define CONFIG_LCD
#define CONFIG_PWM_TEGRA
#define CONFIG_VIDEO_TEGRA
#define LCD_BPP LCD_COLOR16
#define CONFIG_SYS_WHITE_ON_BLACK
#define CONFIG_CONSOLE_SCROLL_LINES 10
#define CONFIG_CMD_BMP
#define CONFIG_LCD_LOGO
/* NAND support */
#define CONFIG_CMD_NAND
#define CONFIG_TEGRA_NAND