diff options
| author | Gireesh Hiremath <Gireesh.Hiremath@in.bosch.com> | 2022-03-25 10:06:08 +0000 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2022-04-21 14:03:14 +0300 |
| commit | 60f68df3971b7314bdf7246ca548aac1c12401f5 (patch) | |
| tree | f288917a846cf8f8476b67d70d2bce70f7914aaa | |
| parent | 677d855707089982e13cad5ddaaddfd03f889217 (diff) | |
ARM: dts: am335x: Guardian: Update backlight parameter
* Update default brightness and dimming frequency
* Enable current sink, while initialization
Signed-off-by: Gireesh Hiremath <Gireesh.Hiremath@in.bosch.com>
Message-Id: <20220325100613.1494-11-Gireesh.Hiremath@in.bosch.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
| -rw-r--r-- | arch/arm/boot/dts/am335x-guardian.dts | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/am335x-guardian.dts b/arch/arm/boot/dts/am335x-guardian.dts index 75ac8686091a..fab844815065 100644 --- a/arch/arm/boot/dts/am335x-guardian.dts +++ b/arch/arm/boot/dts/am335x-guardian.dts @@ -291,14 +291,34 @@ #include "tps65217.dtsi" &tps { + /* + * Configure pmic to enter OFF-state instead of SLEEP-state ("RTC-only + * mode") at poweroff. Most BeagleBone versions do not support RTC-only + * mode and risk hardware damage if this mode is entered. + * + * For details, see linux-omap mailing list May 2015 thread + * [PATCH] ARM: dts: am335x-bone* enable pmic-shutdown-controller + * In particular, messages: + * http://www.spinics.net/lists/linux-omap/msg118585.html + * http://www.spinics.net/lists/linux-omap/msg118615.html + * + * You can override this later with + * &tps { /delete-property/ ti,pmic-shutdown-controller; } + * if you want to use RTC-only mode and made sure you are not affected + * by the hardware problems. (Tip: double-check by performing a current + * measurement after shutdown: it should be less than 1 mA.) + */ ti,pmic-shutdown-controller; interrupt-parent = <&intc>; interrupts = <7>; /* NMI */ backlight { isel = <1>; /* 1 - ISET1, 2 ISET2 */ - fdim = <100>; /* TPS65217_BL_FDIM_100HZ */ - default-brightness = <100>; + fdim = <500>; /* TPS65217_BL_FDIM_500HZ */ + default-brightness = <50>; + /* 1(on) - enable current sink, while initialization */ + /* 0(off) - disable current sink, while initialization */ + isink-en = <1>; }; regulators { @@ -408,6 +428,13 @@ >; }; + led_bl_pins: gpio_led_bl_pins { + pinctrl-single,pins = < + /* P9_14, gpmc_a[2].GPIO1[18] (backlight control) */ + AM33XX_IOPAD(0x848, PIN_OUTPUT | MUX_MODE7) + >; + }; + lcd_disen_pins: pinmux_lcd_disen_pins { pinctrl-single,pins = < /* P9_27, mcasp0_fsr.gpio3[19] (lcd_disen) */ |