[U-Boot] [PATCH 2/2] arm: dra7xx: Hang on any failure during IOdelay recalibration

[Lokesh Vutla]

If there is any failure during IOdelay recalibration sequence, IOs are
not guaranteed to behave as expected. So hang on any failure during the
sequence.

Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
 arch/arm/mach-omap2/omap5/dra7xx_iodelay.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/mach-omap2/omap5/dra7xx_iodelay.c b/arch/arm/mach-omap2/omap5/dra7xx_iodelay.c
index 9bd7051786..9eda57c450 100644
--- a/arch/arm/mach-omap2/omap5/dra7xx_iodelay.c
+++ b/arch/arm/mach-omap2/omap5/dra7xx_iodelay.c
@@ -241,6 +241,12 @@ void __recalibrate_iodelay_end(int ret)
 		debug("IODELAY: IO delay recalibration successfully completed\n");
 	}
 
+	/* If there is an error during iodelay recalibration, SoC is in a bad
+	 * state. Do not progress any further.
+	 */
+	if (ret)
+		hang();
+
 	return;
 }
 
-- 
2.23.0