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Received: from ixit.cz ([84.42.129.46]) by desiato.infradead.org with esmtps (Exim 4.99.2 #2 (Red Hat Linux)) id 1wqyjp-00000009J6R-0Yqz; Mon, 03 Aug 2026 19:54:19 +0000 Received: from [10.0.0.182] (unknown [10.0.0.1]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ixit.cz (Postfix) with ESMTPSA id AA37E5340321; Mon, 03 Aug 2026 21:35:19 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ixit.cz; s=dkim; t=1785785719; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=qNkEgZtE9MyrRrLinjI/1vsPROGFxoSujraxlInN0iw=; b=CCKoQ1CVpmqp8XoxyeAiSn1Wke25wcx+oIwCGSfaJkvDrezNwe9fgfOWhY+y71UhUhRLO1 /0HfWAFcTOX46qQ75eNsOvZ5YmwCY8Y3PquVUqU/ltOdR0QYunrLxXDFgX2P9EQ6eC4a18 mEZ8erCjUnmSdpDymfaUC0GKg00N/j4= Message-ID: <58da7454-e539-4e2b-b658-829cece52205@ixit.cz> Date: Mon, 3 Aug 2026 21:35:19 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/4] arm64: dts: imx8mq-librem5: Dongwoon DW9714 coil requires higher voltage To: Sebastian Krzyszkowiak , Sakari Ailus , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Ondrej Jirman , Olivier Benjamin , Manuel Traut , Alexander Warnecke , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Martin Kepplinger , Shawn Guo Cc: Krzysztof Kozlowski , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, phone-devel@vger.kernel.org, imx@lists.linux.dev, stable@vger.kernel.org References: <20260801-pp-pro-camera-v1-0-7b4d90788f9f@ixit.cz> <20260801-pp-pro-camera-v1-4-7b4d90788f9f@ixit.cz> Content-Language: en-US From: David Heidelberg Autocrypt: addr=david@ixit.cz; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260803_205417_320983_C102E6AA X-CRM114-Status: GOOD ( 19.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 03/08/2026 20:12, Sebastian Krzyszkowiak wrote: > On sobota, 1 sierpnia 2026 02:35:23 czas środkowoeuropejski letni David > Heidelberg via B4 Relay wrote: >> From: David Heidelberg >> >> By datasheet the VDD (in-kernel named vcc) range is between 2.3 to 4.3 V. >> Usually it's around 2.8 V. Here it matches the reg_vcam_2v8. > > It doesn't - VCAM_2V8 isn't connected to DW9714 (and neither is CSI_1V8); > VCAM_AFVDD is. I didn't realized we have datasheet here :) > >> 1.8 V here is likely used for i2c level shifter. > > I'm not sure where you've got an I2C level shifter from, there's none involved it's copy-paste from previous commits. > there. CSI_1V8 is passed to the rear camera module as DOVDD and is consumed by > S5K3L6 as VDDIO, and both S5K3L6 and DW9714 are connected to I2C4_SDA/ > I2C4_SCL, operating at the 1.8V level, only though an EMI filter (F7 in the > schematic). I don't see the AFVDD in the [1], do you have it somewhere defined? Thanks David [1] https://source.puri.sm/Librem5/linux/-/tree/pureos/latest/arch/arm64/boot/dts/freescale?ref_type=heads > >> >> Fixes: f00df2bdb512 ("arm64: dts: imx8mq-librem5: describe the voice coil >> motor for focus control") Cc: stable@vger.kernel.org >> Signed-off-by: David Heidelberg >> --- >> arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi >> b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi index >> f5d529c5baf3e..583cba2d3bebf 100644 >> --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi >> +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi >> @@ -1167,17 +1167,17 @@ &i2c4 { >> pinctrl-1 = <&pinctrl_i2c4_gpio>; >> scl-gpios = <&gpio5 20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; >> sda-gpios = <&gpio5 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; >> status = "okay"; >> >> vcm@c { >> compatible = "dongwoon,dw9714"; >> reg = <0x0c>; >> - vcc-supply = <®_csi_1v8>; >> + vcc-supply = <®_vcam_2v8>; >> }; >> >> bat: fuel-gauge@36 { >> compatible = "maxim,max17055"; >> reg = <0x36>; >> interrupt-parent = <&gpio3>; >> interrupts = <20 IRQ_TYPE_LEVEL_LOW>; >> pinctrl-names = "default"; > > > > -- David Heidelberg