diff --git a/drivers/char/lrng/Kconfig b/drivers/char/lrng/Kconfig
index ffd2df43f2d4..e622b8532e2b 100644
--- a/drivers/char/lrng/Kconfig
+++ b/drivers/char/lrng/Kconfig
@@ -182,6 +182,33 @@ config LRNG_IRQ_ENTROPY_RATE
 	  interrupt entropy source will still deliver data but without
 	  being credited with entropy.
 
+comment "Jitter RNG Entropy Source"
+
+config LRNG_JENT
+	bool "Enable Jitter RNG as LRNG Seed Source"
+	depends on CRYPTO
+	select CRYPTO_JITTERENTROPY
+	help
+	  The Linux RNG may use the Jitter RNG as noise source. Enabling
+	  this option enables the use of the Jitter RNG. Its default
+	  entropy level is 16 bits of entropy per 256 data bits delivered
+	  by the Jitter RNG. This entropy level can be changed at boot
+	  time or at runtime with the lrng_base.jitterrng configuration
+	  variable.
+
+config LRNG_JENT_ENTROPY_RATE
+	int "Jitter RNG Entropy Source Entropy Rate"
+	range 0 256
+	default 16
+	help
+	  The option defines the amount of entropy the LRNG applies to 256
+	  bits of data obtained from the Jitter RNG entropy source. The
+	  LRNG enforces the limit that this value must be in the range
+	  between 0 and 256.
+
+	  In order to disable the Jitter RNG entropy source, the option
+	  has to be set to 0.
+
 comment "CPU Entropy Source"
 
 config LRNG_CPU_ENTROPY_RATE
diff --git a/drivers/char/lrng/Makefile b/drivers/char/lrng/Makefile
index ad7c413cc0d9..01a69172c464 100644
--- a/drivers/char/lrng/Makefile
+++ b/drivers/char/lrng/Makefile
@@ -14,3 +14,4 @@ obj-$(CONFIG_LRNG_DRNG_SWITCH)	+= lrng_switch.o
 obj-$(CONFIG_LRNG_KCAPI_HASH)	+= lrng_kcapi_hash.o
 obj-$(CONFIG_LRNG_DRBG)		+= lrng_drbg.o
 obj-$(CONFIG_LRNG_KCAPI)	+= lrng_kcapi.o
+obj-$(CONFIG_LRNG_JENT)		+= lrng_es_jent.o
diff --git a/drivers/char/lrng/lrng_es_jent.c b/drivers/char/lrng/lrng_es_jent.c
new file mode 100644
index 000000000000..e98152b4c912
--- /dev/null
+++ b/drivers/char/lrng/lrng_es_jent.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+/*
+ * LRNG Fast Entropy Source: Jitter RNG
+ *
+ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/types.h>
+#include <crypto/internal/jitterentropy.h>
+
+#include "lrng_internal.h"
+
+/*
+ * Estimated entropy of data is a 16th of LRNG_DRNG_SECURITY_STRENGTH_BITS.
+ * Albeit a full entropy assessment is provided for the noise source indicating
+ * that it provides high entropy rates and considering that it deactivates
+ * when it detects insufficient hardware, the chosen under estimation of
+ * entropy is considered to be acceptable to all reviewers.
+ */
+static u32 jitterrng = CONFIG_LRNG_JENT_ENTROPY_RATE;
+#ifdef CONFIG_LRNG_RUNTIME_ES_CONFIG
+module_param(jitterrng, uint, 0644);
+MODULE_PARM_DESC(jitterrng, "Entropy in bits of 256 data bits from Jitter RNG noise source");
+#endif
+
+static bool lrng_jent_initialized = false;
+static struct rand_data *lrng_jent_state;
+
+static int __init lrng_jent_initialize(void)
+{
+	/* Initialize the Jitter RNG after the clocksources are initialized. */
+	if (jent_entropy_init() ||
+	    (lrng_jent_state = jent_entropy_collector_alloc(1, 0)) == NULL) {
+		jitterrng = 0;
+		pr_info("Jitter RNG unusable on current system\n");
+		return 0;
+	}
+	lrng_jent_initialized = true;
+	lrng_pool_add_entropy();
+	pr_debug("Jitter RNG working on current system\n");
+
+	return 0;
+}
+device_initcall(lrng_jent_initialize);
+
+/**
+ * lrng_get_jent() - Get Jitter RNG entropy
+ *
+ * @outbuf: buffer to store entropy
+ * @outbuflen: length of buffer
+ *
+ * Return:
+ * * > 0 on success where value provides the added entropy in bits
+ * * 0 if no fast source was available
+ */
+u32 lrng_get_jent(u8 *outbuf, u32 requested_bits)
+{
+	int ret;
+	u32 ent_bits = lrng_jent_entropylevel(requested_bits);
+	unsigned long flags;
+	static DEFINE_SPINLOCK(lrng_jent_lock);
+
+	spin_lock_irqsave(&lrng_jent_lock, flags);
+
+	if (!ent_bits || !lrng_jent_initialized) {
+		spin_unlock_irqrestore(&lrng_jent_lock, flags);
+		return 0;
+	}
+
+	ret = jent_read_entropy(lrng_jent_state, outbuf, requested_bits >> 3);
+	spin_unlock_irqrestore(&lrng_jent_lock, flags);
+
+	if (ret) {
+		pr_debug("Jitter RNG failed with %d\n", ret);
+		return 0;
+	}
+
+	pr_debug("obtained %u bits of entropy from Jitter RNG noise source\n",
+		 ent_bits);
+
+	return ent_bits;
+}
+
+u32 lrng_jent_entropylevel(u32 requested_bits)
+{
+	return lrng_fast_noise_entropylevel((lrng_jent_initialized) ?
+					    jitterrng : 0, requested_bits);
+}
