linux-kernel - [PATCH 05/13] arm: dts: s5pv210: aries: Disable pulls on GPIO i2c adapters

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Date:   Sun, 26 Apr 2020 11:35:56 -0700
From:   Jonathan Bakker <xc-racer2@...e.ca>
To:     kgene@...nel.org, krzk@...nel.org, robh+dt@...nel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Jonathan Bakker <xc-racer2@...e.ca>
Subject: [PATCH 05/13] arm: dts: s5pv210: aries: Disable pulls on GPIO i2c adapters

The bitbanged GPIO i2c adapters have external pull-ups attached
so the internal pulls should be disabled for lower power usage.

Signed-off-by: Jonathan Bakker <xc-racer2@...e.ca>
---
 arch/arm/boot/dts/s5pv210-aries.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/boot/dts/s5pv210-aries.dtsi b/arch/arm/boot/dts/s5pv210-aries.dtsi
index d419b77201f7..f83df426f2b6 100644
--- a/arch/arm/boot/dts/s5pv210-aries.dtsi
+++ b/arch/arm/boot/dts/s5pv210-aries.dtsi
@@ -65,6 +65,9 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		pinctrl-names = "default";
+		pinctrl-0 = <&pmic_i2c_pins>;
+
 		pmic@66 {
 			compatible = "maxim,max8998";
 			reg = <0x66>;
@@ -314,6 +317,9 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		pinctrl-names = "default";
+		pinctrl-0 = <&fg_i2c_pins>;
+
 		fuelgauge@36 {
 			compatible = "maxim,max17040";
 			interrupt-parent = <&vic0>;
@@ -438,6 +444,18 @@
 		samsung,pin-pud = <S3C64XX_PIN_PULL_NONE>;
 		samsung,pin-drv = <EXYNOS4_PIN_DRV_LV1>;
 	};
+
+	pmic_i2c_pins: pmic-i2c-pins {
+		samsung,pins = "gpj4-0", "gpj4-3";
+		samsung,pin-pud = <S3C64XX_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS4_PIN_DRV_LV1>;
+	};
+
+	fg_i2c_pins: fg-i2c-pins {
+		samsung,pins = "mp05-0", "mp05-1";
+		samsung,pin-pud = <S3C64XX_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS4_PIN_DRV_LV1>;
+	};
 };
 
 &pwm {
-- 
2.20.1