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SAMA5 LCDC: Fixed backlight PWM divider. Backlight no longer flashes

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This commit is contained in:
Gregory Nutt 2013-10-11 17:12:35 -06:00
parent 6336d79bb3
commit 491ad55b5c
2 changed files with 20 additions and 12 deletions
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30
configs/sama5d3x-ek/include/board.h
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@ -71,18 +71,26 @@
#endif
/* LCD Geometry and Timing */
/* LCD Interface, Geometry and Timing */
#define BOARD_LCD_WIDTH 800 /* Display width (pixels) */
#define BOARD_LCD_HEIGHT 480 /* Display height (pixels) */
#define BOARD_LCD_PIXELCLOCK 33260000 /* Pixel clock */
#define BOARD_LCDC_GUARDTIME 9 /* Guard time */
#define BOARD_LCD_VSPW 2 /* Vertical pulse width (lines) */
#define BOARD_LCD_HSPW 128 /* Horizontal pulse width (LCDDOTCLK) */
#define BOARD_LCD_VFPW 37 /* Vertical front porch (lines) */
#define BOARD_LCD_VBPW 8 /* Vertical back porch (lines) */
#define BOARD_LCD_HFPW 168 /* Horizontal front porch (LCDDOTCLK cycles) */
#define BOARD_LCD_HBPW 88 /* Horizontal back porch (LCDDOTCLK cycles) */
#define BOARD_LCDC_OUTPUT_BPP 24 /* Output format to H/W is 24BPP RGB */
#define BOARD_LCDC_WIDTH 800 /* Display width (pixels) */
#define BOARD_LCDC_HEIGHT 480 /* Display height (rows) */
#undef BOARD_LCDC_MCK_MUL2 /* Source clock is Mck (vs 2*Mck) */
#define BOARD_LCDC_PIXCLK_INV 1 /* Invert pixel clock, use falling edge */
#define BOARD_LCDC_PIXELCLOCK 33260000 /* Pixel clock frequency */
#define BOARD_LCDC_GUARDTIME 9 /* Guard time (frames) */
#define BOARD_LCDC_VSPW 2 /* Vertical pulse width (lines) */
#define BOARD_LCDC_HSPW 128 /* Horizontal pulse width (LCDDOTCLK) */
#define BOARD_LCDC_VFPW 37 /* Vertical front porch (lines) */
#define BOARD_LCDC_VBPW 8 /* Vertical back porch (lines) */
#define BOARD_LCDC_HFPW 168 /* Horizontal front porch (LCDDOTCLK) */
#define BOARD_LCDC_HBPW 88 /* Horizontal back porch (LCDDOTCLK) */
/* Backlight prescaler value and PWM output polarity */
#define BOARD_LCDC_PWMPS LCDC_LCDCFG6_PWMPS_DIV1
#define BOARD_LCDC_PWMPOL LCDC_LCDCFG6_PWMPOL
/* LED definitions ******************************************************************/
/* There are two LEDs on the SAMA5D3 series-CM board that can be controlled

2
configs/sama5d3x-ek/nx/defconfig
View File

@ -174,7 +174,7 @@ CONFIG_SAMA5_MPDDRC=y
# LCDC Configuration
#
CONFIG_SAMA5_LCDC_BACKLIGHT=y
CONFIG_SAMA5_LCDC_DEFBACKLIGHT=0xf0
CONFIG_SAMA5_LCDC_DEFBACKLIGHT=0xc8
CONFIG_SAMA5_LCDC_BACKCOLOR=0x7b5d
# CONFIG_SAMA5_LCDC_OUTPUT_12BPP is not set
# CONFIG_SAMA5_LCDC_OUTPUT_16BPP is not set