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bh=2aQBbG5BBr12ydhLfhSkL/E4J0Fku1F2nvWGO6lgZKA=; b=VnALRn2FAIPrnPvRuXE/00SOEU ellbJLES0qQ78J/B7thoDIkE0j0MlLAuYWZJZKgWmhikw8W4/wAwLZDcd4xDjWtJG/xJ3tugTfZZ0 N6p5MhhkvEr66ewBSn4a9oSUihsTYk0YoOS0VyNACKD5UYNgubC7DCJylhaKqcFqAM+iMZyJZ+UVJ tV5sYEs4TvekiRv6A1f4oTZ/iYUu8W0uB9aqMglwpkuVyZtVY7yNULXCUow6y76WAAWEX8uMeqyye mTi/FID9oI6phlazitvLWmueyNVthwq3lXu9TIrummLy6DHYhFJ7kP55cM4AfWrpkMezUzNu3pfUw 3W/NmIOQ==; Received: from [91.102.182.218] (helo=localhost) by s106.cyber-folks.pl with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1wN1iB-0000000EbcL-1ih0; Wed, 13 May 2026 07:00:47 +0200 From: Michal Piekos Date: Wed, 13 May 2026 06:59:44 +0200 Subject: [PATCH v2 3/3] arm64: dts: allwinner: a523: add gpadc node Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20260513-sunxi-a523-gpadc-v2-3-d5efde151dac@mmpsystems.pl> References: <20260513-sunxi-a523-gpadc-v2-0-d5efde151dac@mmpsystems.pl> In-Reply-To: <20260513-sunxi-a523-gpadc-v2-0-d5efde151dac@mmpsystems.pl> To: Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Maksim Kiselev Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Michal Piekos X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1778648397; l=1298; i=michal.piekos@mmpsystems.pl; s=20260301; h=from:subject:message-id; bh=/N5/DsYuZyXhP6df/g8ro7dcmFJQ8yyC3EItsyGlO0Y=; b=7IFLix/s5zhm6Z2vJ2rXvkQgwcq7m4r9e0QlY9IbP0q9Ao1SHxmHErk7DFQE4WXUIiCZzeoui XFAguZ705gpB2TreIeIY0QKwh5XXKhMh1gY77uJsYHBqyTPO6QiAESE X-Developer-Key: i=michal.piekos@mmpsystems.pl; a=ed25519; pk=Aixyx03If7ZDamiKKN0lsa+0mtA+WjIuIf2ZQVYNBqg= X-Authenticated-Id: michal.piekos@mmpsystems.pl X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= Describe GPADC block on Allwinner A523. Tested on Radxa Cubie A5E: - 2 connected channels are showing voltages in agreement with schematics. BOOT-SEL-ADC ~500mV BOM-ADC ~1800mV - 3rd channel exposed on 40pin header is showing correct voltages when connected to known voltage source. Signed-off-by: Michal Piekos --- arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi index 5afa8d92acbf..4e793aeccf89 100644 --- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi @@ -340,6 +340,17 @@ ledc: led-controller@2008000 { status = "disabled"; }; + gpadc: adc@2009000 { + compatible = "allwinner,sun55i-a523-gpadc"; + reg = <0x2009000 0x400>; + clocks = <&ccu CLK_BUS_GPADC0>, <&ccu CLK_GPADC0>; + clock-names = "bus", "mod"; + resets = <&ccu RST_BUS_GPADC0>; + interrupts = ; + #io-channel-cells = <1>; + status = "disabled"; + }; + wdt: watchdog@2050000 { compatible = "allwinner,sun55i-a523-wdt"; reg = <0x2050000 0x20>;