diff --git a/MAINTAINERS b/MAINTAINERS
index 7a9e3156f4..6a302b35e2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -271,6 +271,11 @@ F:	drivers/spi/spi-qup.c
 F:	drivers/net/mdio-ipq4019.c
 F:	drivers/rng/msm_rng.c
 
+ARM LAYERSCAPE SFP
+M:	Sean Anderson <sean.anderson@seco.com>
+S:	Maintained
+F:	drivers/misc/ls2_sfp.c
+
 ARM MARVELL KIRKWOOD ARMADA-XP ARMADA-38X ARMADA-37XX ARMADA-7K/8K
 M:	Stefan Roese <sr@denx.de>
 S:	Maintained
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 7029bb7b5c..2a86c42017 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -224,6 +224,20 @@ config JZ4780_EFUSE
 	help
 	  This selects support for the eFUSE on Ingenic JZ4780 SoCs.
 
+config LS2_SFP
+	bool "Layerscape Security Fuse Processor"
+	depends on FSL_LSCH2 || ARCH_LS1021A
+	depends on MISC
+	imply DM_REGULATOR
+	help
+	  This adds support for the Security Fuse Processor found on Layerscape
+	  SoCs. It contains various fuses related to secure boot, including the
+	  Super Root Key hash, One-Time-Programmable Master Key, Debug
+	  Challenge/Response values, and others. Fuses are numbered according
+	  to their four-byte offset from the start of the bank.
+
+	  If you don't need to read/program fuses, say 'n'.
+
 config MXC_OCOTP
 	bool "Enable MXC OCOTP Driver"
 	depends on ARCH_IMX8M || ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_VF610
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index b7a8ef68ab..4926671833 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_IMX8ULP) += imx8ulp/
 obj-$(CONFIG_LED_STATUS) += status_led.o
 obj-$(CONFIG_LED_STATUS_GPIO) += gpio_led.o
 obj-$(CONFIG_MPC83XX_SERDES) += mpc83xx_serdes.o
+obj-$(CONFIG_$(SPL_TPL_)LS2_SFP) += ls2_sfp.o
 obj-$(CONFIG_$(SPL_)MXC_OCOTP) += mxc_ocotp.o
 obj-$(CONFIG_MXS_OCOTP) += mxs_ocotp.o
 obj-$(CONFIG_NUVOTON_NCT6102D) += nuvoton_nct6102d.o
diff --git a/drivers/misc/ls2_sfp.c b/drivers/misc/ls2_sfp.c
new file mode 100644
index 0000000000..df54b0c89e
--- /dev/null
+++ b/drivers/misc/ls2_sfp.c
@@ -0,0 +1,350 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Sean Anderson <sean.anderson@seco.com>
+ *
+ * This driver supports the Security Fuse Processor device found on some
+ * Layerscape processors. At the moment, we only support a few processors.
+ * This driver was written with reference to the Layerscape SDK User
+ * Guide [1] and the ATF SFP driver [2].
+ *
+ * [1] https://docs.nxp.com/bundle/GUID-487B2E69-BB19-42CB-AC38-7EF18C0FE3AE/page/GUID-27FC40AD-3321-4A82-B29E-7BB49EE94F23.html
+ * [2] https://source.codeaurora.org/external/qoriq/qoriq-components/atf/tree/drivers/nxp/sfp?h=github.com/master
+ */
+
+#define LOG_CATEGORY UCLASS_MISC
+#include <common.h>
+#include <clk.h>
+#include <fuse.h>
+#include <misc.h>
+#include <asm/io.h>
+#include <dm/device_compat.h>
+#include <dm/read.h>
+#include <linux/bitfield.h>
+#include <power/regulator.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define SFP_INGR	0x20
+#define SFP_SVHESR	0x24
+#define SFP_SFPCR	0x28
+
+#define SFP_START	0x200
+#define SFP_END		0x284
+#define SFP_SIZE	(SFP_END - SFP_START + 4)
+
+#define SFP_INGR_ERR	BIT(8)
+#define SFP_INGR_INST	GENMASK(7, 0)
+
+#define SFP_INGR_READFB	0x01
+#define SFP_INGR_PROGFB	0x02
+
+#define SFP_SFPCR_PPW	GENMASK(15, 0)
+
+enum ls2_sfp_ioctl {
+	LS2_SFP_IOCTL_READ,
+	LS2_SFP_IOCTL_PROG,
+};
+
+/**
+ * struct ls2_sfp_priv - private data for LS2 SFP
+ * @base: Base address of SFP
+ * @supply: The (optional) supply for TA_PROG_SFP
+ * @programmed: Whether we've already programmed the fuses since the last
+ *              reset. The SFP has a *very* limited amount of programming
+ *              cycles (two to six, depending on the model), so we try and
+ *              prevent accidentally performing additional programming
+ *              cycles.
+ * @dirty: Whether the mirror registers have been written to (overridden)
+ *         since we've last read the fuses (either as part of the reset
+ *         process or using a READFB instruction). There is a much larger,
+ *         but still finite, limit on the number of SFP read cycles (around
+ *         300,000), so we try and minimize reads as well.
+ */
+struct ls2_sfp_priv {
+	void __iomem *base;
+	struct udevice *supply;
+	bool programmed, dirty;
+};
+
+static u32 ls2_sfp_readl(struct ls2_sfp_priv *priv, ulong off)
+{
+	u32 val = be32_to_cpu(readl(priv->base + off));
+
+	log_debug("%08x = readl(%p)\n", val, priv->base + off);
+	return val;
+}
+
+static void ls2_sfp_writel(struct ls2_sfp_priv *priv, ulong val, ulong off)
+{
+	log_debug("writel(%08lx, %p)\n", val, priv->base + off);
+	writel(cpu_to_be32(val), priv->base + off);
+}
+
+static bool ls2_sfp_validate(struct udevice *dev, int offset, int size)
+{
+	if (offset < 0 || size < 0) {
+		dev_notice(dev, "size and offset must be positive\n");
+		return false;
+	}
+
+	if (offset & 3 || size & 3) {
+		dev_notice(dev, "size and offset must be multiples of 4\n");
+		return false;
+	}
+
+	if (offset + size > SFP_SIZE) {
+		dev_notice(dev, "size + offset must be <= %#x\n", SFP_SIZE);
+		return false;
+	}
+
+	return true;
+}
+
+static int ls2_sfp_read(struct udevice *dev, int offset, void *buf_bytes,
+			int size)
+{
+	int i;
+	struct ls2_sfp_priv *priv = dev_get_priv(dev);
+	u32 *buf = buf_bytes;
+
+	if (!ls2_sfp_validate(dev, offset, size))
+		return -EINVAL;
+
+	for (i = 0; i < size; i += 4)
+		buf[i >> 2] = ls2_sfp_readl(priv, SFP_START + offset + i);
+
+	return size;
+}
+
+static int ls2_sfp_write(struct udevice *dev, int offset,
+			 const void *buf_bytes, int size)
+{
+	int i;
+	struct ls2_sfp_priv *priv = dev_get_priv(dev);
+	const u32 *buf = buf_bytes;
+
+	if (!ls2_sfp_validate(dev, offset, size))
+		return -EINVAL;
+
+	for (i = 0; i < size; i += 4)
+		ls2_sfp_writel(priv, buf[i >> 2], SFP_START + offset + i);
+
+	priv->dirty = true;
+	return size;
+}
+
+static int ls2_sfp_check_secret(struct udevice *dev)
+{
+	struct ls2_sfp_priv *priv = dev_get_priv(dev);
+	u32 svhesr = ls2_sfp_readl(priv, SFP_SVHESR);
+
+	if (svhesr) {
+		dev_warn(dev, "secret value hamming error not zero: %08x\n",
+			 svhesr);
+		return -EIO;
+	}
+	return 0;
+}
+
+static int ls2_sfp_transaction(struct ls2_sfp_priv *priv, ulong inst)
+{
+	u32 ingr;
+
+	ls2_sfp_writel(priv, inst, SFP_INGR);
+
+	do {
+		ingr = ls2_sfp_readl(priv, SFP_INGR);
+	} while (FIELD_GET(SFP_INGR_INST, ingr));
+
+	return FIELD_GET(SFP_INGR_ERR, ingr) ? -EIO : 0;
+}
+
+static int ls2_sfp_ioctl(struct udevice *dev, unsigned long request, void *buf)
+{
+	int ret;
+	struct ls2_sfp_priv *priv = dev_get_priv(dev);
+
+	switch (request) {
+	case LS2_SFP_IOCTL_READ:
+		if (!priv->dirty) {
+			dev_dbg(dev, "ignoring read request, since fuses are not dirty\n");
+			return 0;
+		}
+
+		ret = ls2_sfp_transaction(priv, SFP_INGR_READFB);
+		if (ret) {
+			dev_err(dev, "error reading fuses\n");
+			return ret;
+		}
+
+		ls2_sfp_check_secret(dev);
+		priv->dirty = false;
+		return 0;
+	case LS2_SFP_IOCTL_PROG:
+		if (priv->programmed) {
+			dev_warn(dev, "fuses already programmed\n");
+			return -EPERM;
+		}
+
+		ret = ls2_sfp_check_secret(dev);
+		if (ret)
+			return ret;
+
+		if (priv->supply) {
+			ret = regulator_set_enable(priv->supply, true);
+			if (ret)
+				return ret;
+		}
+
+		ret = ls2_sfp_transaction(priv, SFP_INGR_PROGFB);
+		priv->programmed = true;
+		if (priv->supply)
+			regulator_set_enable(priv->supply, false);
+
+		if (ret)
+			dev_err(dev, "error programming fuses\n");
+		return ret;
+	default:
+		dev_dbg(dev, "unknown ioctl %lu\n", request);
+		return -EINVAL;
+	}
+}
+
+static const struct misc_ops ls2_sfp_ops = {
+	.read = ls2_sfp_read,
+	.write = ls2_sfp_write,
+	.ioctl = ls2_sfp_ioctl,
+};
+
+static int ls2_sfp_probe(struct udevice *dev)
+{
+	int ret;
+	struct clk clk;
+	struct ls2_sfp_priv *priv = dev_get_priv(dev);
+	ulong rate;
+
+	priv->base = dev_read_addr_ptr(dev);
+	if (!priv->base) {
+		dev_dbg(dev, "could not read register base\n");
+		return -EINVAL;
+	}
+
+	ret = device_get_supply_regulator(dev, "ta-sfp-prog", &priv->supply);
+	if (ret && ret != -ENODEV && ret != -ENOSYS) {
+		dev_dbg(dev, "problem getting supply (err %d)\n", ret);
+		return ret;
+	}
+
+	ret = clk_get_by_name(dev, "ipg", &clk);
+	if (ret == -ENOSYS) {
+		rate = gd->bus_clk;
+	} else if (ret) {
+		dev_dbg(dev, "could not get clock (err %d)\n", ret);
+		return ret;
+	} else {
+		ret = clk_enable(&clk);
+		if (ret) {
+			dev_dbg(dev, "could not enable clock (err %d)\n", ret);
+			return ret;
+		}
+
+		rate = clk_get_rate(&clk);
+		clk_free(&clk);
+		if (!rate || IS_ERR_VALUE(rate)) {
+			ret = rate ? rate : -ENOENT;
+			dev_dbg(dev, "could not get clock rate (err %d)\n",
+				ret);
+			return ret;
+		}
+	}
+
+	/* platform clock in MHz / 4 * 12 */
+	ls2_sfp_writel(priv, FIELD_PREP(SFP_SFPCR_PPW, rate * 3 / 1000000),
+		       SFP_SFPCR);
+
+	ls2_sfp_check_secret(dev);
+	return 0;
+}
+
+static const struct udevice_id ls2_sfp_ids[] = {
+	{ .compatible = "fsl,ls1021a-sfp" },
+	{ }
+};
+
+U_BOOT_DRIVER(ls2_sfp) = {
+	.name		= "ls2_sfp",
+	.id		= UCLASS_MISC,
+	.of_match	= ls2_sfp_ids,
+	.probe		= ls2_sfp_probe,
+	.ops		= &ls2_sfp_ops,
+	.priv_auto	= sizeof(struct ls2_sfp_priv),
+};
+
+static int ls2_sfp_device(struct udevice **dev)
+{
+	int ret = uclass_get_device_by_driver(UCLASS_MISC,
+					      DM_DRIVER_GET(ls2_sfp), dev);
+
+	if (ret)
+		log_debug("device not found (err %d)\n", ret);
+	return ret;
+}
+
+int fuse_read(u32 bank, u32 word, u32 *val)
+{
+	int ret;
+	struct udevice *dev;
+
+	ret = ls2_sfp_device(&dev);
+	if (ret)
+		return ret;
+
+	ret = misc_ioctl(dev, LS2_SFP_IOCTL_READ, NULL);
+	if (ret)
+		return ret;
+
+	ret = misc_read(dev, word << 2, val, sizeof(*val));
+	return ret < 0 ? ret : 0;
+}
+
+int fuse_sense(u32 bank, u32 word, u32 *val)
+{
+	int ret;
+	struct udevice *dev;
+
+	ret = ls2_sfp_device(&dev);
+	if (ret)
+		return ret;
+
+	ret = misc_read(dev, word << 2, val, sizeof(*val));
+	return ret < 0 ? ret : 0;
+}
+
+int fuse_prog(u32 bank, u32 word, u32 val)
+{
+	int ret;
+	struct udevice *dev;
+
+	ret = ls2_sfp_device(&dev);
+	if (ret)
+		return ret;
+
+	ret = misc_write(dev, word << 2, &val, sizeof(val));
+	if (ret < 0)
+		return ret;
+
+	return misc_ioctl(dev, LS2_SFP_IOCTL_PROG, NULL);
+}
+
+int fuse_override(u32 bank, u32 word, u32 val)
+{
+	int ret;
+	struct udevice *dev;
+
+	ret = ls2_sfp_device(&dev);
+	if (ret)
+		return ret;
+
+	ret = misc_write(dev, word << 2, &val, sizeof(val));
+	return ret < 0 ? ret : 0;
+}
