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From: Billy Tsai <billy_tsai@aspeedtech.com>
To: "Jonathan Cameron" <jic23@kernel.org>,
	"David Lechner" <dlechner@baylibre.com>,
	"Nuno Sá" <nuno.sa@analog.com>,
	"Andy Shevchenko" <andy@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Joel Stanley" <joel@jms.id.au>,
	"Andrew Jeffery" <andrew@codeconstruct.com.au>,
	"Ryan Chen" <ryan_chen@aspeedtech.com>
Cc: <linux-iio@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-aspeed@lists.ozlabs.org>, <linux-kernel@vger.kernel.org>,
	Billy Tsai <billy_tsai@aspeedtech.com>,
	Jonathan Cameron <jic23@kernel.org>
Subject: [PATCH v2 3/3] arm64: dts: aspeed: Add syscon phandle to AST2700 ADC nodes
Date: Thu, 1 Oct 2026 17:50:38 +0800	[thread overview]
Message-ID: <20261001-ast27xx-adc-upstream-v2-3-2f9c15cc0064@aspeedtech.com> (raw)
In-Reply-To: <20261001-ast27xx-adc-upstream-v2-0-2f9c15cc0064@aspeedtech.com>

Point the ADC nodes at their own syscon1 so the driver can correctly
locate the reference-voltage trimming data on AST2700, where syscon0
and syscon1 share the same device-tree node name and would otherwise
resolve to the wrong SCU.

Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Assisted-by: Claude:claude-sonnet-5
---
 arch/arm64/boot/dts/aspeed/aspeed-g7-soc1.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/aspeed/aspeed-g7-soc1.dtsi b/arch/arm64/boot/dts/aspeed/aspeed-g7-soc1.dtsi
index bc990f79e693..053673cc4b8e 100644
--- a/arch/arm64/boot/dts/aspeed/aspeed-g7-soc1.dtsi
+++ b/arch/arm64/boot/dts/aspeed/aspeed-g7-soc1.dtsi
@@ -246,6 +246,7 @@ adc0: adc@14c00000 {
 		clocks = <&syscon1 SCU1_CLK_AHB>;
 		resets = <&syscon1 SCU1_RESET_ADC>;
 		interrupts-extended = <&intc1 80>;
+		aspeed,trim-syscon = <&syscon1>;
 		#io-channel-cells = <1>;
 		status = "disabled";
 	};
@@ -256,6 +257,7 @@ adc1: adc@14c00100 {
 		clocks = <&syscon1 SCU1_CLK_AHB>;
 		resets = <&syscon1 SCU1_RESET_ADC>;
 		interrupts-extended = <&intc1 80>;
+		aspeed,trim-syscon = <&syscon1>;
 		#io-channel-cells = <1>;
 		status = "disabled";
 	};

-- 
2.34.1



  parent reply	other threads:[~2026-10-01  9:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-01  9:50 [PATCH v2 0/3] iio: adc: aspeed: Fix SCU lookup for multi-SCU AST2700 Billy Tsai
2026-10-01  9:50 ` [PATCH v2 1/3] dt-bindings: iio: adc: Add syscon property for multi-SCU SoCs Billy Tsai
2026-10-02  9:03   ` Krzysztof Kozlowski
2026-10-02  9:15     ` Joshua Crofts
2026-10-01  9:50 ` [PATCH v2 2/3] iio: adc: aspeed: Use syscon phandle for trimming data when available Billy Tsai
2026-10-02  8:34   ` Andy Shevchenko
2026-10-01  9:50 ` Billy Tsai [this message]
2026-10-02  9:23 ` [PATCH v2 0/3] iio: adc: aspeed: Fix SCU lookup for multi-SCU AST2700 Andy Shevchenko

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