Great. So this means I2C2 is used for LCD and HDMI both. While HDMI is not plugged, the EDID of LCD will be checked out, right?
Mark On 11/19/2012 05:43 PM, Alexandre Courbot wrote: > Enable host1x and add the rgb output. > > Also add the power sequence that controls the backlight and panel. The > sequence strictly follows the order and timings of the panel > specification. > > Currently the backlight device controls both backlight and panel, this > needs to be fixed once the panel framework supports power sequences. > > Signed-off-by: Alexandre Courbot <[email protected]> > --- > arch/arm/boot/dts/tegra20-ventana.dts | 108 > +++++++++++++++++++++++++++++++++- > 1 file changed, 105 insertions(+), 3 deletions(-) > > diff --git a/arch/arm/boot/dts/tegra20-ventana.dts > b/arch/arm/boot/dts/tegra20-ventana.dts > index adc4754..31c9c5c 100644 > --- a/arch/arm/boot/dts/tegra20-ventana.dts > +++ b/arch/arm/boot/dts/tegra20-ventana.dts > @@ -10,6 +10,15 @@ > reg = <0x00000000 0x40000000>; > }; > > + host1x { > + dc@54200000 { > + rgb { > + status = "okay"; > + nvidia,ddc-i2c-bus = <&lcd_ddc>; > + }; > + }; > + }; > + > pinmux { > pinctrl-names = "default"; > pinctrl-0 = <&state_default>; > @@ -341,7 +350,7 @@ > #size-cells = <0>; > }; > > - i2c@1 { > + lcd_ddc: i2c@1 { > reg = <1>; > #address-cells = <1>; > #size-cells = <0>; > @@ -516,6 +525,99 @@ > bus-width = <8>; > }; > > + backlight: backlight { > + compatible = "pwm-backlight"; > + brightness-levels = <0 16 32 48 64 80 96 112 128 144 160 176 > 192 208 224 240 255>; > + default-brightness-level = <12>; > + > + /* resources used by the power sequences */ > + pwms = <&pwm 2 5000000>; > + pwm-names = "backlight"; > + power-supply = <&vdd_bl_reg>; > + panel-supply = <&vdd_panel_reg>; > + > + power-sequences { > + power-on { > + /* > + * Panel power and LVDS enable. > + * TODO: move into the panel device as soon as > + * panel framework supports power sequences. > + */ > + step0 { > + type = "regulator"; > + id = "panel"; > + enable; > + }; > + step1 { > + type = "gpio"; > + gpio = <&gpio 10 0>; > + value = <1>; > + }; > + step2 { > + type = "delay"; > + delay = <200000>; > + }; > + /* Backlight sequence. This belongs here. */ > + step3 { > + type = "regulator"; > + id = "power"; > + enable; > + }; > + step4 { > + type = "delay"; > + delay = <10000>; > + }; > + step5 { > + type = "pwm"; > + id = "backlight"; > + enable; > + }; > + step6 { > + type = "gpio"; > + gpio = <&gpio 28 0>; > + value = <1>; > + }; > + }; > + > + power-off { > + step0 { > + type = "gpio"; > + gpio = <&gpio 28 0>; > + value = <0>; > + }; > + step1 { > + type = "pwm"; > + id = "backlight"; > + disable; > + }; > + step2 { > + type = "delay"; > + delay = <10000>; > + }; > + step3 { > + type = "regulator"; > + id = "power"; > + disable; > + }; > + /* This also belongs to the panel sequence */ > + step4 { > + type = "delay"; > + delay = <200000>; > + }; > + step5 { > + type = "gpio"; > + gpio = <&gpio 10 0>; > + value = <0>; > + }; > + step6 { > + type = "regulator"; > + id = "panel"; > + disable; > + }; > + }; > + }; > + }; > + > regulators { > compatible = "simple-bus"; > #address-cells = <1>; > @@ -549,7 +651,7 @@ > enable-active-high; > }; > > - regulator@3 { > + vdd_panel_reg: regulator@3 { > compatible = "regulator-fixed"; > reg = <3>; > regulator-name = "vdd_pnl"; > @@ -559,7 +661,7 @@ > enable-active-high; > }; > > - regulator@4 { > + vdd_bl_reg: regulator@4 { > compatible = "regulator-fixed"; > reg = <4>; > regulator-name = "vdd_bl"; > -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
