diff options
| author | Adam Ford <aford173@gmail.com> | 2018-05-18 23:33:35 +0300 |
|---|---|---|
| committer | Sekhar Nori <nsekhar@ti.com> | 2018-06-18 17:50:03 +0300 |
| commit | 8ae024497b3d68165e692d6ad5ba149cd070dac2 (patch) | |
| tree | 7a4f67e869b5f4f4b27ee2d445fac44db25b6b8b /arch/arm/boot/dts/da850-evm.dts | |
| parent | 4be9e673298fb4d204c6d4c782c800ec6d17d0c6 (diff) | |
| download | linux-8ae024497b3d68165e692d6ad5ba149cd070dac2.tar.xz | |
ARM: dts: da850-evm: Enable LCD and backlight
When using the board files the LCD works, but not with the DT.
This adds enables the original da850-evm to work with the same
LCD in device tree mode.
The EVM has a gpio for backlight regulator and a PWM for dimming
the backlight. The LCD and the vpif display pins are mutually
exclusive, so if using the LCD, do not load the vpif driver.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'arch/arm/boot/dts/da850-evm.dts')
| -rw-r--r-- | arch/arm/boot/dts/da850-evm.dts | 83 |
1 files changed, 82 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts index 743af2b6a5ce..e49d71100c15 100644 --- a/arch/arm/boot/dts/da850-evm.dts +++ b/arch/arm/boot/dts/da850-evm.dts @@ -27,6 +27,65 @@ spi0 = &spi1; }; + backlight: backlight-pwm { + pinctrl-names = "default"; + pinctrl-0 = <&ecap2_pins>; + power-supply = <&backlight_lcd>; + compatible = "pwm-backlight"; + /* + * The PWM here corresponds to production hardware. The + * schematic needs to be 1015171 (15 March 2010), Rev A + * or newer. + */ + pwms = <&ecap2 0 50000 0>; + brightness-levels = <0 10 20 30 40 50 60 70 80 90 99>; + default-brightness-level = <7>; + }; + + panel { + compatible = "ti,tilcdc,panel"; + pinctrl-names = "default"; + pinctrl-0 = <&lcd_pins>; + /* + * The vpif and the LCD are mutually exclusive. + * To enable VPIF, change the status below to 'disabled' then + * then change the status of the vpif below to 'okay' + */ + status = "okay"; + enable-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>; /* lcd_panel_pwr */ + + panel-info { + ac-bias = <255>; + ac-bias-intrpt = <0>; + dma-burst-sz = <16>; + bpp = <16>; + fdd = <0x80>; + sync-edge = <0>; + sync-ctrl = <1>; + raster-order = <0>; + fifo-th = <0>; + }; + + display-timings { + native-mode = <&timing0>; + timing0: 480x272 { + clock-frequency = <9000000>; + hactive = <480>; + vactive = <272>; + hfront-porch = <3>; + hback-porch = <2>; + hsync-len = <42>; + vback-porch = <3>; + vfront-porch = <4>; + vsync-len = <11>; + hsync-active = <0>; + vsync-active = <0>; + de-active = <1>; + pixelclk-active = <1>; + }; + }; + }; + vbat: fixedregulator0 { compatible = "regulator-fixed"; regulator-name = "vbat"; @@ -35,6 +94,15 @@ regulator-boot-on; }; + backlight_lcd: backlight-regulator { + compatible = "regulator-fixed"; + regulator-name = "lcd_backlight_pwr"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&gpio 47 GPIO_ACTIVE_HIGH>; /* lcd_backlight_pwr */ + enable-active-high; + }; + sound { compatible = "simple-audio-card"; simple-audio-card,name = "DA850/OMAP-L138 EVM"; @@ -63,6 +131,10 @@ }; }; +&ecap2 { + status = "okay"; +}; + &pmx_core { status = "okay"; @@ -113,6 +185,10 @@ status = "okay"; }; +&lcdc { + status = "okay"; +}; + &i2c0 { status = "okay"; clock-frequency = <100000>; @@ -340,5 +416,10 @@ &vpif { pinctrl-names = "default"; pinctrl-0 = <&vpif_capture_pins>, <&vpif_display_pins>; - status = "okay"; + /* + * The vpif and the LCD are mutually exclusive. + * To enable VPIF, disable the ti,tilcdc,panel then + * change the status below to 'okay' + */ + status = "disabled"; }; |