From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 1A5BD1F956; Wed, 7 May 2025 04:54:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746593683; cv=none; b=Kk17OgeeEYmvmY6tSb8cVyU8QUfruBzK/RYsqgCW8yBkE5dbFNBqFCOivZf4b5KMxak1bN9fYM+zrTHoVvQg9Q9OS2ruB0eRfE4v2VR0NJ8SEBUMgFOJpuc7MrZgRn7s6Kxse1tcIaGvNOaSCfL5MRw15C92hCgkxAZK0aZWdBI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746593683; c=relaxed/simple; bh=VjMGNiOaNwQRcGd7A82aQtYXwsISpvwqy8WrbWZjDH0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=jXaWmkZ3Y5gS9AA9JDV89ijCpzefu8P+BgmPvPjO9GnqtH7cYpldvF6fXct4gBtnA+CmQ05wV5O5dXjXCaJ/5IFvKdCo2aKAJpEA6ibca470EgXiJ/Mt6cRFKeM8qs3BxkrrKyq+8KK36WpGuSKeUhxNxKQ+qOW+jLc8AOwCTKY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IUSbpOdB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IUSbpOdB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1FC05C4CEE7; Wed, 7 May 2025 04:54:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746593682; bh=VjMGNiOaNwQRcGd7A82aQtYXwsISpvwqy8WrbWZjDH0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=IUSbpOdBLMbnQ7P9bffYc+g9mKMnbfFpJBDk6ZvwvyHPEy2Tlnx00RtC9AmpUu4n+ HToMcO8fwebBVx1Ss37BNCvvIhd3Z+NJJrPoQntaiZbQdSnctnYT/73goMpT5R3Fyx BjFaJfC1srilLBNAmB601DuGEHj5A5RkI+lK1edqmmn0MutcqUuzSzb7xja54NjykE DyX3j3MPkCeUeAr/QxIwwARoxM+uGzSK0dZb0el4Rxkffo6WBBGLF5Ovb0yrU86gPC v0gH49YdOg377WXJ74X7SxBHM3u8Wl0yviQb0zV7kBhDKC1dpU+AElj5wkZkwuxyO0 IFQuhekZ6vv8Q== Message-ID: <8ec115f7-1a35-4506-a20a-b4de27f10960@kernel.org> Date: Wed, 7 May 2025 06:54:38 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 5/6] arm64: dts: ls1028a-qds: make the QIXIS CPLD use the simple-mfd-i2c.c driver To: Ioana Ciornei Cc: Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Vladimir Oltean References: <20250430153634.2971736-1-ioana.ciornei@nxp.com> <20250430153634.2971736-6-ioana.ciornei@nxp.com> <20250502-savvy-eccentric-hog-b4fed5@kuoka> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 06/05/2025 16:21, Ioana Ciornei wrote: > On Fri, May 02, 2025 at 09:04:03AM +0200, Krzysztof Kozlowski wrote: >> On Wed, Apr 30, 2025 at 06:36:33PM GMT, Ioana Ciornei wrote: >>> From: Vladimir Oltean >>> >>> The MDIO mux on the LS1028A-QDS never worked in mainline. The device >>> tree was submitted as-is, and there is a downstream driver for the QIXIS >>> FPGA: >>> >>> https://github.com/nxp-qoriq/linux/blob/lf-6.12.y/drivers/soc/fsl/qixis_ctrl.c >>> >>> That driver is very similar to the already existing drivers/mfd/simple-mfd-i2c.c, >>> and the hardware works with the simple-mfd-i2c driver, so there isn't >>> any reason to upstream the other one. >>> >>> Adapt the compatible string and child node format of the FPGA node, so >>> that the simple-mfd-i2c driver accepts it. >> >> Why do you break the users based on some driver differences? Fix the >> drivers, not the DTS. >> >>> >>> Signed-off-by: Vladimir Oltean >>> Signed-off-by: Ioana Ciornei >>> --- >>> arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts | 9 +++++---- >>> 1 file changed, 5 insertions(+), 4 deletions(-) >>> >>> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts b/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts >>> index 0bb2f28a0441..58b54d521d75 100644 >>> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts >>> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts >>> @@ -338,17 +338,18 @@ sgtl5000: audio-codec@a { >>> }; >>> >>> fpga@66 { >>> - compatible = "fsl,ls1028aqds-fpga", "fsl,fpga-qixis-i2c", >>> - "simple-mfd"; >>> + compatible = "fsl,ls1028a-qds-qixis-i2c"; >> >> This breaks all the existing users. NAK. > > Using a mainline kernel, this DT node was never used or probed by a > driver since that driver was never submitted. I am not breaking any user > of the mainline kernel. 1. Users of DTS is plural, so what about all other projects and out of tree users? 2. Did you remove simple-mfd from kernel or what? How can you claim there is no driver for simple-mfd? Best regards, Krzysztof