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@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; }