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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260102_015853_556642_ACE20716 X-CRM114-Status: GOOD ( 16.18 ) 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 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