diff options
| author | Frank Li <Frank.Li@freescale.com> | 2009-10-15 13:56:52 +0800 |
|---|---|---|
| committer | Frank Li <Frank.Li@freescale.com> | 2009-10-15 13:56:52 +0800 |
| commit | 27ec6bd89b4e4682833deaae69866e8ef254db60 (patch) | |
| tree | 6af16e23c206734cea5f591de74a42f5b0f3d91b | |
| parent | f69eb6aecfa614400e6eaad46b56db9bf628cea0 (diff) | |
ENGR00117307 iMX23 reduce LCD driver strength to 8mA
Changing the LCD pin drive strengths to 8mA reduces
the amount of overshoot in half (15% and 50%) and
does not significantly change the rise and fall time
characteristics of the digital LCD signals
Signed-off-by: Frank Li <Frank.Li@freescale.com>
| -rw-r--r-- | arch/arm/mach-stmp3xxx/stmp378x.c | 58 |
1 files changed, 29 insertions, 29 deletions
diff --git a/arch/arm/mach-stmp3xxx/stmp378x.c b/arch/arm/mach-stmp3xxx/stmp378x.c index 1cb07cdb48fb..a5d282c1519b 100644 --- a/arch/arm/mach-stmp3xxx/stmp378x.c +++ b/arch/arm/mach-stmp3xxx/stmp378x.c @@ -275,35 +275,35 @@ struct pin_group gpmi_pins = { }; static struct pin_desc lcd_hx8238a_desc[] = { - { PINID_LCD_D00, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D01, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D02, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D03, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D04, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D05, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D06, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D07, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D08, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D09, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D10, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D11, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D12, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D13, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D14, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D15, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D16, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_D17, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_RESET, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_VSYNC, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_HSYNC, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_ENABLE, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_LCD_DOTCK, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, - { PINID_GPMI_D13, PIN_FUN2, PIN_12MA, PIN_3_3V, 0 }, - { PINID_GPMI_D12, PIN_FUN2, PIN_12MA, PIN_3_3V, 0 }, - { PINID_GPMI_D11, PIN_FUN2, PIN_12MA, PIN_3_3V, 0 }, - { PINID_GPMI_D10, PIN_FUN2, PIN_12MA, PIN_3_3V, 0 }, - { PINID_GPMI_D09, PIN_FUN2, PIN_12MA, PIN_3_3V, 0 }, - { PINID_GPMI_D08, PIN_FUN2, PIN_12MA, PIN_3_3V, 0 }, + { PINID_LCD_D00, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D01, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D02, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D03, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D04, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D05, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D06, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D07, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D08, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D09, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D10, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D11, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D12, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D13, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D14, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D15, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D16, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_D17, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_RESET, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_VSYNC, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_HSYNC, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_ENABLE, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_LCD_DOTCK, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, + { PINID_GPMI_D13, PIN_FUN2, PIN_8MA, PIN_3_3V, 0 }, + { PINID_GPMI_D12, PIN_FUN2, PIN_8MA, PIN_3_3V, 0 }, + { PINID_GPMI_D11, PIN_FUN2, PIN_8MA, PIN_3_3V, 0 }, + { PINID_GPMI_D10, PIN_FUN2, PIN_8MA, PIN_3_3V, 0 }, + { PINID_GPMI_D09, PIN_FUN2, PIN_8MA, PIN_3_3V, 0 }, + { PINID_GPMI_D08, PIN_FUN2, PIN_8MA, PIN_3_3V, 0 }, }; struct pin_group stmp378x_lcd_pins = { |