From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Date: Mon, 15 Jun 2020 12:55:23 +0300
Subject: ARM: dts: at91: sama5d2_xplained: classd: pull-down the R1 and R3
lines
Git-commit: 07e324d4dfef7b9df22c950055636b9d0b890af4
Patch-mainline: v5.9-rc1
References: git-fixes
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: b133ca7a653c ("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
Acked-by: Ivan T. Ivanov <iivanov@suse.de>
---
arch/arm/boot/dts/at91-sama5d2_xplained.dts | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
--- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
@@ -415,14 +415,18 @@
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>;
@@ -581,7 +585,7 @@
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";