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ARM: dts: at91: sama5d2_xplained: classd: pull-down the R1 and R3 lines

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The R1 and R3 lines drive NMOS transistors that are OFF with a low level.
On the SAMA5D2 Xplained board, if the pins corresponding to R1 and R3
have pull-ups enabled, there is an extra 2 x 30uA power consumption.
Use pull-downs for these 2 lines to remove the unnecessary power
consumption.

Fixes: b133ca7a65 ("ARM: dts: at91: sama5d2_xplained: add pin muxing and enable classd")
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200615095525.43414-1-codrin.ciubotariu@microchip.com
This commit is contained in:
Codrin Ciubotariu 2020-06-15 12:55:23 +03:00 committed by Alexandre Belloni
parent b3a9e3b962
commit 07e324d4df
1 changed files with 9 additions and 5 deletions
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14
arch/arm/boot/dts/at91-sama5d2_xplained.dts
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@ -490,14 +490,18 @@ pinctrl_charger_lbo: charger_lbo {
bias-pull-up;
};
pinctrl_classd_default: classd_default {
pinctrl_classd_default_pfets: classd_default_pfets {
pinmux = <PIN_PB1__CLASSD_R0>,
<PIN_PB2__CLASSD_R1>,
<PIN_PB3__CLASSD_R2>,
<PIN_PB4__CLASSD_R3>;
<PIN_PB3__CLASSD_R2>;
bias-pull-up;
};
pinctrl_classd_default_nfets: classd_default_nfets {
pinmux = <PIN_PB2__CLASSD_R1>,
<PIN_PB4__CLASSD_R3>;
bias-pull-down;
};
pinctrl_flx0_default: flx0_default {
pinmux = <PIN_PB28__FLEXCOM0_IO0>,
<PIN_PB29__FLEXCOM0_IO1>;
@ -696,7 +700,7 @@ pinctrl_pwm0_pwm2_default: pwm0_pwm2_default {
classd: classd@fc048000 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_classd_default>;
pinctrl-0 = <&pinctrl_classd_default_pfets &pinctrl_classd_default_nfets>;
atmel,pwm-type = "diff";
atmel,non-overlap-time = <10>;
status = "okay";