From nobody Fri Jun 12 18:57:15 2026 Received: from s106b.cyber-folks.pl (s106b.cyber-folks.pl [195.78.66.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 403B5367297; Wed, 13 May 2026 05:00:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.78.66.88 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778648452; cv=none; b=k9qfZuC+HGT6QTHG1nM2CdCG7jcUS8rD8TpATx4HFco6Zqt20qKXjtQ2F7VfKdMLIi9qtPQXPS6PMAmv7pSNu7hTNrJ9alR3J6PSeQlz5GVyu5HDQebr1C+FGUO8M1PNQ+7MXN3AgrJg1Foc/hcs+p+NX62pBRwRI0eeSYNqvn8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778648452; c=relaxed/simple; bh=n7OmLK+G+swK8U8KTOiNlbnGO2KxE8y9tMCQrEw0lXA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=uFh3dOUQraBeUpiaMDIfuojI4zkYlve5t/fsuRU17oOTb44gFtn27GcYETQpWHIWfdCmMKl+UgCIvXIzQj+gFCElPDyHwdvdDGo6SJG3lKj85T1H32zzKQ5ttWE/vR3BUmIG+2UmSmn1DaJ8gZSQDK4OyHwrF29rnrEZ1e7oqLQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mmpsystems.pl; spf=pass smtp.mailfrom=mmpsystems.pl; dkim=pass (2048-bit key) header.d=mmpsystems.pl header.i=@mmpsystems.pl header.b=IsIznn9B; arc=none smtp.client-ip=195.78.66.88 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mmpsystems.pl Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mmpsystems.pl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mmpsystems.pl header.i=@mmpsystems.pl header.b="IsIznn9B" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mmpsystems.pl; s=x; h=Cc:To:In-Reply-To:References:Message-Id: Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date:From:Sender: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=71JsG6gVDXctQDIb7LaTsQ0pEfRTsF6nmijRQ5whL8E=; b=IsIznn9BC+baZ2a2HHvTmIF5bk UNTAkCwxlMLgNb3NR7tgPa1C+BC1WUD3iSiNW0gHIzrl77Dcu3NvZfLul1GxQnq88cB7c8mb/04+j 8bKb+PBU7WVDAzawfXWh8toF33zDtoXDOnK+jxNiDpd7ZsGsffhlRKjNPSyWPu2EIDbwyCmPlERId kvinxnwUP7TPb/Y8Zx8VnkdfzvJN3ym0I6l//k8YtJ+LSrodgP7LvMmI5LI/n1/BvpIy1kQ0eHgN9 oUzD4mt4v/64idvTOuH0U1/DfKhYGqd+plLnsInc7ZOHtyl/Dwh+nTaN+zVxXUDQyMQmLlaKX3tW6 D4U9BPMA==; 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 1wN1i9-0000000EbQH-3j76; Wed, 13 May 2026 07:00:45 +0200 From: Michal Piekos Date: Wed, 13 May 2026 06:59:42 +0200 Subject: [PATCH v2 1/3] dt-bindings: iio: adc: Add GPADC for Allwinner A523 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260513-sunxi-a523-gpadc-v2-1-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=1776; i=michal.piekos@mmpsystems.pl; s=20260301; h=from:subject:message-id; bh=n7OmLK+G+swK8U8KTOiNlbnGO2KxE8y9tMCQrEw0lXA=; b=ELbVIHXde+q5YmXB8IE0eAW32UNyEM5FTi/D0b4yAJ9QlutFfLOBULwxdjrPewFo2uqDg2SZD 2/sJxabLF/wB8peOJyGDiopjk42Msve++vCujiqfSK3PCpEfoxN+jUx X-Developer-Key: i=michal.piekos@mmpsystems.pl; a=ed25519; pk=Aixyx03If7ZDamiKKN0lsa+0mtA+WjIuIf2ZQVYNBqg= X-Authenticated-Id: michal.piekos@mmpsystems.pl Add support for the GPADC for the Allwinner A523. It differs from the D1/T113s/R329/T507 by having two clocks. Signed-off-by: Michal Piekos Acked-by: Conor Dooley --- .../iio/adc/allwinner,sun20i-d1-gpadc.yaml | 32 ++++++++++++++++++= +++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-= gpadc.yaml b/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-= gpadc.yaml index da605a051b94..6467800d30e2 100644 --- a/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.y= aml +++ b/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.y= aml @@ -14,6 +14,7 @@ properties: oneOf: - enum: - allwinner,sun20i-d1-gpadc + - allwinner,sun55i-a523-gpadc - items: - enum: - allwinner,sun50i-h616-gpadc @@ -29,7 +30,12 @@ properties: const: 0 =20 clocks: - maxItems: 1 + minItems: 1 + maxItems: 2 + + clock-names: + minItems: 1 + maxItems: 2 =20 interrupts: maxItems: 1 @@ -40,6 +46,30 @@ properties: resets: maxItems: 1 =20 +allOf: + - if: + properties: + compatible: + enum: + - allwinner,sun55i-a523-gpadc + then: + properties: + clocks: + items: + - description: Bus clock + - description: Module clock + clock-names: + items: + - const: bus + - const: mod + required: + - clock-names + else: + properties: + clocks: + maxItems: 1 + clock-names: false + patternProperties: "^channel@[0-9a-f]+$": $ref: adc.yaml --=20 2.43.0 From nobody Fri Jun 12 18:57:15 2026 Received: from s106b.cyber-folks.pl (s106b.cyber-folks.pl [195.78.66.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6088F37BE6B; 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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 1wN1iA-0000000EbXi-35LL; Wed, 13 May 2026 07:00:46 +0200 From: Michal Piekos Date: Wed, 13 May 2026 06:59:43 +0200 Subject: [PATCH v2 2/3] iio: adc: sun20i-gpadc: add A523 gpadc support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260513-sunxi-a523-gpadc-v2-2-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=1618; i=michal.piekos@mmpsystems.pl; s=20260301; h=from:subject:message-id; bh=I8HMsZirgXX885nuJJP7JQN223GiZKMXE/BN5ZNXDh0=; b=9R/92n4OO7rz0UOg1KOojjxsQ2ixBGVbfkuPW7Agy7qsR5pS/ZHeTurTPQj4ZBpnEIsCSNCw/ bfrCRcMH9Z9BVQcIIjvB/FZe9zMtH/Oz45RFgKuEGbks/H4kdnS62EH X-Developer-Key: i=michal.piekos@mmpsystems.pl; a=ed25519; pk=Aixyx03If7ZDamiKKN0lsa+0mtA+WjIuIf2ZQVYNBqg= X-Authenticated-Id: michal.piekos@mmpsystems.pl A523 differs from existing sun20i-gpadc-iio by having two clocks; bus clock and module clock. Change driver to enable all clocks. Signed-off-by: Michal Piekos Reviewed-by: Andre Przywara --- drivers/iio/adc/sun20i-gpadc-iio.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/sun20i-gpadc-iio.c b/drivers/iio/adc/sun20i-gp= adc-iio.c index 861c14da75ad..3f1f07b3a385 100644 --- a/drivers/iio/adc/sun20i-gpadc-iio.c +++ b/drivers/iio/adc/sun20i-gpadc-iio.c @@ -180,7 +180,7 @@ static int sun20i_gpadc_probe(struct platform_device *p= dev) struct iio_dev *indio_dev; struct sun20i_gpadc_iio *info; struct reset_control *rst; - struct clk *clk; + struct clk_bulk_data *clks; int irq; int ret; =20 @@ -205,9 +205,11 @@ static int sun20i_gpadc_probe(struct platform_device *= pdev) if (IS_ERR(info->regs)) return PTR_ERR(info->regs); =20 - clk =3D devm_clk_get_enabled(dev, NULL); - if (IS_ERR(clk)) - return dev_err_probe(dev, PTR_ERR(clk), "failed to enable bus clock\n"); + ret =3D devm_clk_bulk_get_all_enabled(dev, &clks); + if (ret <=3D 0) + return dev_err_probe( + dev, ret, + "failed to enable clocks or no clocks defined\n"); =20 rst =3D devm_reset_control_get_exclusive(dev, NULL); if (IS_ERR(rst)) @@ -243,6 +245,7 @@ static int sun20i_gpadc_probe(struct platform_device *p= dev) =20 static const struct of_device_id sun20i_gpadc_of_id[] =3D { { .compatible =3D "allwinner,sun20i-d1-gpadc" }, + { .compatible =3D "allwinner,sun55i-a523-gpadc" }, { } }; MODULE_DEVICE_TABLE(of, sun20i_gpadc_of_id); --=20 2.43.0 From nobody Fri Jun 12 18:57:15 2026 Received: from s106b.cyber-folks.pl (s106b.cyber-folks.pl [195.78.66.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CFAFD3655F1; Wed, 13 May 2026 05:00:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.78.66.88 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778648452; cv=none; b=UxTRq12T9yTYyd2pnJoGLbuA3JJCiRhscDM3GwDOnAxBwZRVf3NzI9t7E+wmH+0werxuNpMbPx1WPo/XsMr4XwxMU8GjXBDiKZgfOkpuMJ5c0YALU58vAvdiHAQG7qGf5CIArWZGHobYb7jPsSPSQ33JQdMTJx/O0wj1gPCKlcY= ARC-Message-Signature: i=1; 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a=ed25519; pk=Aixyx03If7ZDamiKKN0lsa+0mtA+WjIuIf2ZQVYNBqg= X-Authenticated-Id: michal.piekos@mmpsystems.pl 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/bo= ot/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 =3D "disabled"; }; =20 + gpadc: adc@2009000 { + compatible =3D "allwinner,sun55i-a523-gpadc"; + reg =3D <0x2009000 0x400>; + clocks =3D <&ccu CLK_BUS_GPADC0>, <&ccu CLK_GPADC0>; + clock-names =3D "bus", "mod"; + resets =3D <&ccu RST_BUS_GPADC0>; + interrupts =3D ; + #io-channel-cells =3D <1>; + status =3D "disabled"; + }; + wdt: watchdog@2050000 { compatible =3D "allwinner,sun55i-a523-wdt"; reg =3D <0x2050000 0x20>; --=20 2.43.0