From 501c098a1f2cdaa930cb1a7166d3724467890a64 Mon Sep 17 00:00:00 2001
From: Stefan Roese <sr@denx.de>
Date: Wed, 1 Jul 2015 13:28:39 +0200
Subject: arm: mvebu: Disable MBUS error propagation

Accessing MBUS windows not backed-up by e.g. PCIe devices will
hang the SoC. Disable MBUS error propagation back to CPU allows
to read 0xffffffff instead of hanging the SoC.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Luka Perkov <luka.perkov@sartura.hr>
---
 arch/arm/mach-mvebu/cpu.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'arch/arm/mach-mvebu/cpu.c')

diff --git a/arch/arm/mach-mvebu/cpu.c b/arch/arm/mach-mvebu/cpu.c
index 23c2a97..fa82067 100644
--- a/arch/arm/mach-mvebu/cpu.c
+++ b/arch/arm/mach-mvebu/cpu.c
@@ -241,6 +241,9 @@ int arch_cpu_init(void)
 	 */
 	mvebu_mbus_probe(windows, ARRAY_SIZE(windows));
 
+	/* Disable MBUS error propagation */
+	clrsetbits_le32(SOC_COHERENCY_FABRIC_CTRL_REG, MBUS_ERR_PROP_EN, 0);
+
 	return 0;
 }
 #endif /* CONFIG_ARCH_CPU_INIT */
-- 
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