From: Gireesh Hiremath <[email protected]>
* Update default brightness and dimming frequency
* Enable current sink, while initialization
Signed-off-by: Gireesh Hiremath <[email protected]>
---
arch/arm/boot/dts/am335x-guardian.dts | 31 +++++++++++++++++++++++++--
1 file 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) */
--
2.20.1