From d746fef40653d17a64ff81a8ff57c55d122d8d5e Mon Sep 17 00:00:00 2001
From: Scott Wood <scottwood@freescale.com>
Date: Fri, 20 Mar 2015 19:28:13 -0700
Subject: armv8/ls2085a: Add workaround for USB erratum A-008751

Without this "USB may not work" according to the erratum text, though I
did not notice a problem without it.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
---
 arch/arm/cpu/armv8/fsl-lsch3/soc.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'arch/arm/cpu/armv8/fsl-lsch3/soc.c')

diff --git a/arch/arm/cpu/armv8/fsl-lsch3/soc.c b/arch/arm/cpu/armv8/fsl-lsch3/soc.c
index 242a865db8..17700ef94e 100644
--- a/arch/arm/cpu/armv8/fsl-lsch3/soc.c
+++ b/arch/arm/cpu/armv8/fsl-lsch3/soc.c
@@ -7,8 +7,19 @@
 #include <common.h>
 #include <fsl_ifc.h>
 #include <asm/arch-fsl-lsch3/soc.h>
+#include <asm/io.h>
+
+static void erratum_a008751(void)
+{
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008751
+	u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE;
+
+	writel(0x27672b2a, scfg + SCFG_USB3PRM1CR / 4);
+#endif
+}
 
 void fsl_lsch3_early_init_f(void)
 {
+	erratum_a008751();
 	init_early_memctl_regs();	/* tighten IFC timing */
 }
-- 
cgit