diff --git a/arch/blackfin/mach-bf527/head.S b/arch/blackfin/mach-bf527/head.S
index 28c4861..6588170 100644
--- a/arch/blackfin/mach-bf527/head.S
+++ b/arch/blackfin/mach-bf527/head.S
@@ -87,6 +87,9 @@
 	r1 = PLL_BYPASS;                 /* Bypass the PLL?                 */
 	r1 = r1 << 8;                    /* Shift it over                   */
 	r0 = r1 | r0;                    /* add them all together           */
+#ifdef ANOMALY_05000265
+	r0 = BITSET(r0, 15);             /* Add 250 mV of hysteresis to SPORT input pins */
+#endif
 
 	p0.h = hi(PLL_CTL);
 	p0.l = lo(PLL_CTL);              /* Load the address                */
diff --git a/arch/blackfin/mach-bf533/head.S b/arch/blackfin/mach-bf533/head.S
index 01b2b7e..619685b 100644
--- a/arch/blackfin/mach-bf533/head.S
+++ b/arch/blackfin/mach-bf533/head.S
@@ -78,6 +78,9 @@
 	r1 = PLL_BYPASS;                 /* Bypass the PLL?                 */
 	r1 = r1 << 8;                    /* Shift it over                   */
 	r0 = r1 | r0;                    /* add them all together           */
+#ifdef ANOMALY_05000265
+	r0 = BITSET(r0, 15);             /* Add 250 mV of hysteresis to SPORT input pins */
+#endif
 
 	p0.h = hi(PLL_CTL);
 	p0.l = lo(PLL_CTL);              /* Load the address                */
diff --git a/arch/blackfin/mach-bf537/head.S b/arch/blackfin/mach-bf537/head.S
index 12eb5cc..559a7ee 100644
--- a/arch/blackfin/mach-bf537/head.S
+++ b/arch/blackfin/mach-bf537/head.S
@@ -87,6 +87,9 @@
 	r1 = PLL_BYPASS;                 /* Bypass the PLL?                 */
 	r1 = r1 << 8;                    /* Shift it over                   */
 	r0 = r1 | r0;                    /* add them all together           */
+#ifdef ANOMALY_05000265
+	r0 = BITSET(r0, 15);             /* Add 250 mV of hysteresis to SPORT input pins */
+#endif
 
 	p0.h = hi(PLL_CTL);
 	p0.l = lo(PLL_CTL);              /* Load the address                */
diff --git a/arch/blackfin/mach-bf548/head.S b/arch/blackfin/mach-bf548/head.S
index b062816..051b05c 100644
--- a/arch/blackfin/mach-bf548/head.S
+++ b/arch/blackfin/mach-bf548/head.S
@@ -94,6 +94,9 @@
 	r1 = PLL_BYPASS;                 /* Bypass the PLL?                 */
 	r1 = r1 << 8;                    /* Shift it over                   */
 	r0 = r1 | r0;                    /* add them all together           */
+#ifdef ANOMALY_05000265
+	r0 = BITSET(r0, 15);             /* Add 250 mV of hysteresis to SPORT input pins */
+#endif
 
 	p0.h = hi(PLL_CTL);
 	p0.l = lo(PLL_CTL);              /* Load the address                */
diff --git a/arch/blackfin/mach-bf561/head.S b/arch/blackfin/mach-bf561/head.S
index 75ea6a9..0b28137 100644
--- a/arch/blackfin/mach-bf561/head.S
+++ b/arch/blackfin/mach-bf561/head.S
@@ -77,6 +77,9 @@
 	r1 = PLL_BYPASS;                 /* Bypass the PLL?                 */
 	r1 = r1 << 8;                    /* Shift it over                   */
 	r0 = r1 | r0;                    /* add them all together           */
+#ifdef ANOMALY_05000265
+	r0 = BITSET(r0, 15);             /* Add 250 mV of hysteresis to SPORT input pins */
+#endif
 
 	p0.h = hi(PLL_CTL);
 	p0.l = lo(PLL_CTL);              /* Load the address                */