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 551662749DC for ; Fri, 2 Jan 2026 09:58:51 +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=1767347931; cv=none; b=QID/h3dUjp9IebRwSupp10x8QHawpXBT0WI+H0k7SHQyc/8zBOvvavtjfhBqxP2HsuAuVyquHaz/pjTCzLzvr4XY2OLQwUH41kLNrZx+qmiO7sx0K8g1GzagiYnVOA8bPl3ATHwGJED8i1MlQk0NMyiXhgaTpX+XaotoieK2fa8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767347931; c=relaxed/simple; bh=ICTaM8okM51iETuXN6WYZXXc8REu3+3iT6jSwzylNeE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=M99NvKR1ZHhLk5bRj5z7Eo/3AthWHvFPBayfwl5Qs0Hs5Pji5CpiO3FVGSYWeW3cfjB5MMt7e2BkP86vkf7muXKBscfXt/pvufaYD7SmeNEK7or09Zv0q54sH+dyOg5ywvjCFTUoHzWW7080uV30mCh30BoVwoKqIix8C4UUwfk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lZKV9IF2; 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="lZKV9IF2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9D5ABC116B1; Fri, 2 Jan 2026 09:58:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767347930; bh=ICTaM8okM51iETuXN6WYZXXc8REu3+3iT6jSwzylNeE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=lZKV9IF2NvYPRrLqQdi6ReKIVmeyQ8Au4WwLu4E84foiK/CoF72+Qwk+RcxW01huf J8SlA3AnNFQf8DaZkGxp2ZohUDB+L/FsvP5sYbbLv0L6A+osV9vfDjJzZ97HO2mjZm IUMp4979o10Wqn+tyc9efjGDxZCFeFH2pz19zb2dIZp1L+ydQvz3dcCkKXn2OtDqpz fUaUpoOveJgj26AtF2dS2HQo3V1OZlmxib4QcIXvRRevhkXHtw2WZzzQZae39QWmUq /IZLQwVLfk+KHN+MeUqGzWui4S0QoM+uD/KVO6oPkX3vySmrWhxp8uvRUdmVVFDPl7 9JUW4Kpy8CAxg== Message-ID: Date: Fri, 2 Jan 2026 10:58:47 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] soc: nxp: Add a simple NXP LPC32xx socinfo driver To: Vladimir Zapolskiy , Arnd Bergmann Cc: Piotr Wojtaszczyk , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260101235647.2411062-1-vz@mleia.com> <20260101235647.2411062-3-vz@mleia.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGVBBMBCgA/AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJoF1BKBQkWlnSaAAoJEBuTQ307 QWKbHukP/3t4tRp/bvDnxJfmNdNVn0gv9ep3L39IntPalBFwRKytqeQkzAju0whYWg+R/rwp +r2I1Fzwt7+PTjsnMFlh1AZxGDmP5MFkzVsMnfX1lGiXhYSOMP97XL6R1QSXxaWOpGNCDaUl ajorB0lJDcC0q3xAdwzRConxYVhlgmTrRiD8oLlSCD5baEAt5Zw17UTNDnDGmZQKR0fqLpWy 786Lm5OScb7DjEgcA2PRm17st4UQ1kF0rQHokVaotxRM74PPDB8bCsunlghJl1DRK9s1aSuN hL1Pv9VD8b4dFNvCo7b4hfAANPU67W40AaaGZ3UAfmw+1MYyo4QuAZGKzaP2ukbdCD/DYnqi tJy88XqWtyb4UQWKNoQqGKzlYXdKsldYqrLHGoMvj1UN9XcRtXHST/IaLn72o7j7/h/Ac5EL 8lSUVIG4TYn59NyxxAXa07Wi6zjVL1U11fTnFmE29ALYQEXKBI3KUO1A3p4sQWzU7uRmbuxn naUmm8RbpMcOfa9JjlXCLmQ5IP7Rr5tYZUCkZz08LIfF8UMXwH7OOEX87Y++EkAB+pzKZNNd hwoXulTAgjSy+OiaLtuCys9VdXLZ3Zy314azaCU3BoWgaMV0eAW/+gprWMXQM1lrlzvwlD/k whyy9wGf0AEPpLssLVt9VVxNjo6BIkt6d1pMg6mHsUEVzsFNBFVDXDQBEADNkrQYSREUL4D3 Gws46JEoZ9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLue MNsWLJBvBaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6ei OMheesVS5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wA GldWsRxbf3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA 6z6lBZn0WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9 YegxWKvXXHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt 91pFzBSOIpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gU BLHFTg2hYnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/ JoFzZ4B0p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu 4vXVFBYIGmpyNPYzRm0QPwARAQABwsF8BBgBCgAmAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtB YpsFAmgXUF8FCRaWWyoACgkQG5NDfTtBYptO0w//dlXJs5/42hAXKsk+PDg3wyEFb4NpyA1v qmx7SfAzk9Hf6lWwU1O6AbqNMbh6PjEwadKUk1m04S7EjdQLsj/MBSgoQtCT3MDmWUUtHZd5 RYIPnPq3WVB47GtuO6/u375tsxhtf7vt95QSYJwCB+ZUgo4T+FV4hquZ4AsRkbgavtIzQisg Dgv76tnEv3YHV8Jn9mi/Bu0FURF+5kpdMfgo1sq6RXNQ//TVf8yFgRtTUdXxW/qHjlYURrm2 H4kutobVEIxiyu6m05q3e9eZB/TaMMNVORx+1kM3j7f0rwtEYUFzY1ygQfpcMDPl7pRYoJjB dSsm0ZuzDaCwaxg2t8hqQJBzJCezTOIkjHUsWAK+tEbU4Z4SnNpCyM3fBqsgYdJxjyC/tWVT AQ18NRLtPw7tK1rdcwCl0GFQHwSwk5pDpz1NH40e6lU+NcXSeiqkDDRkHlftKPV/dV+lQXiu jWt87ecuHlpL3uuQ0ZZNWqHgZoQLXoqC2ZV5KrtKWb/jyiFX/sxSrodALf0zf+tfHv0FZWT2 zHjUqd0t4njD/UOsuIMOQn4Ig0SdivYPfZukb5cdasKJukG1NOpbW7yRNivaCnfZz6dTawXw XRIV/KDsHQiyVxKvN73bThKhONkcX2LWuD928tAR6XMM2G5ovxLe09vuOzzfTWQDsm++9UKF a/A= In-Reply-To: <20260101235647.2411062-3-vz@mleia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 02/01/2026 00:56, Vladimir Zapolskiy wrote: > Add NXP LPC32xx specific driver to get unique SoC ID from System Control > Block registers and export it to userspace. > > Signed-off-by: Vladimir Zapolskiy > --- > drivers/soc/Kconfig | 1 + > drivers/soc/Makefile | 1 + > drivers/soc/nxp/Kconfig | 16 +++++ > drivers/soc/nxp/Makefile | 2 + > drivers/soc/nxp/lpc32xx-soc.c | 114 ++++++++++++++++++++++++++++++++++ > 5 files changed, 134 insertions(+) > create mode 100644 drivers/soc/nxp/Kconfig > create mode 100644 drivers/soc/nxp/Makefile > create mode 100644 drivers/soc/nxp/lpc32xx-soc.c > > diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig > index a2d65adffb80..c21b0d2f58fc 100644 > --- a/drivers/soc/Kconfig > +++ b/drivers/soc/Kconfig > @@ -18,6 +18,7 @@ source "drivers/soc/loongson/Kconfig" > source "drivers/soc/mediatek/Kconfig" > source "drivers/soc/microchip/Kconfig" > source "drivers/soc/nuvoton/Kconfig" > +source "drivers/soc/nxp/Kconfig" > source "drivers/soc/pxa/Kconfig" > source "drivers/soc/qcom/Kconfig" > source "drivers/soc/renesas/Kconfig" > diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile > index 47a3925ff84c..a04c21a8a5a4 100644 > --- a/drivers/soc/Makefile > +++ b/drivers/soc/Makefile > @@ -24,6 +24,7 @@ obj-y += loongson/ > obj-y += mediatek/ > obj-y += microchip/ > obj-y += nuvoton/ > +obj-y += nxp/ > obj-y += pxa/ > obj-y += qcom/ > obj-y += renesas/ Missing maintainers entry. > + > +static int lpc32xx_soc_probe(struct platform_device *pdev) > +{ > + struct soc_device_attribute *soc_dev_attr; > + struct device *dev = &pdev->dev; > + struct soc_device *soc_dev; > + struct regmap *scb; > + u32 serial_id[4]; > + int ret; > + > + soc_dev_attr = devm_kzalloc(dev, sizeof(*soc_dev_attr), GFP_KERNEL); > + if (!soc_dev_attr) > + return -ENOMEM; > + > + soc_dev_attr->family = "NXP LPC32xx"; > + > + ret = of_property_read_string(of_root, "model", &soc_dev_attr->machine); > + if (ret) > + return ret; > + > + scb = syscon_regmap_lookup_by_compatible("nxp,lpc3220-scb"); This is undocumented ABI. Anyway, you should look up devices via phandles. Best regards, Krzysztof