linux-kernel - [PATCH 4/4] ARM: dts: stm32: add booster for ADC analog switches on stm32mp157c

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Message-ID: <1561709289-11174-5-git-send-email-fabrice.gasnier@st.com>
Date:   Fri, 28 Jun 2019 10:08:09 +0200
From:   Fabrice Gasnier <fabrice.gasnier@...com>
To:     <broonie@...nel.org>, <lgirdwood@...il.com>, <robh+dt@...nel.org>,
        <alexandre.torgue@...com>
CC:     <mcoquelin.stm32@...il.com>, <fabrice.gasnier@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <devicetree@...r.kernel.org>
Subject: [PATCH 4/4] ARM: dts: stm32: add booster for ADC analog switches on stm32mp157c

Booster for ADC analog input switches can be used when Vdda is below 2.7V
to get maximum ADC analog performances.
Add booster for ADC analog switches on stm32mp157c.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...com>
---
 arch/arm/boot/dts/stm32mp157c.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi
index 2afeee6..2dd5162 100644
--- a/arch/arm/boot/dts/stm32mp157c.dtsi
+++ b/arch/arm/boot/dts/stm32mp157c.dtsi
@@ -109,6 +109,12 @@
 		};
 	};
 
+	booster: regulator-booster {
+		compatible = "st,stm32mp1-booster";
+		st,syscfg = <&syscfg>;
+		status = "disabled";
+	};
+
 	soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
-- 
2.7.4