linux-kernel - [PATCH 05/10] ARM: dts: stm32: adopt generic iio bindings for adc channels on stm32mp157c-ed1

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Message-ID: <20230112104446.1140551-6-olivier.moysan@foss.st.com>
Date:   Thu, 12 Jan 2023 11:44:40 +0100
From:   Olivier Moysan <olivier.moysan@...s.st.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>
CC:     Olivier Moysan <olivier.moysan@...s.st.com>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 05/10] ARM: dts: stm32: adopt generic iio bindings for adc channels on stm32mp157c-ed1

Use STM32 ADC generic bindings instead of legacy bindings on
STM32MP157c-ed1 board.

The STM32 ADC specific binding to declare channels has been deprecated,
hence adopt the generic IIO channels bindings, instead.
The STM32MP151 device tree now exposes internal channels using the
generic binding. This makes the change mandatory here to avoid a mixed
use of legacy and generic binding, which is not supported by the driver.

Signed-off-by: Olivier Moysan <olivier.moysan@...s.st.com>
---
 arch/arm/boot/dts/stm32mp157c-ed1.dts | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts b/arch/arm/boot/dts/stm32mp157c-ed1.dts
index b1eb688a278a..4e218aaaaf9b 100644
--- a/arch/arm/boot/dts/stm32mp157c-ed1.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ed1.dts
@@ -108,10 +108,20 @@ &adc {
 	vref-supply = <&vdda>;
 	status = "disabled";
 	adc1: adc@0 {
-		st,adc-channels = <0 1 6>;
-		/* 16.5 ck_cycles sampling time */
-		st,min-sample-time-nsecs = <400>;
 		status = "okay";
+		channel@0 {
+			reg = <0>;
+			/* 16.5 ck_cycles sampling time */
+			st,min-sample-time-ns = <400>;
+		};
+		channel@1 {
+			reg = <1>;
+			st,min-sample-time-ns = <400>;
+		};
+		channel@6 {
+			reg = <6>;
+			st,min-sample-time-ns = <400>;
+		};
 	};
 };
 
-- 
2.25.1