[U-Boot] [PATCH v1 5/6] mxs: Clarify why we poweroff in case of brownout in 5v conflict

Otavio Salvador
2012-08-05T19:05:33Z

If VDDIO has a brownout, then the VDD5V_GT_VDDIO becomes unreliable
but this wasn't clear on code so a comment has been added to clarify
it.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
---
Changes in v1:
- new patch

arch/arm/cpu/arm926ejs/mxs/spl_power_init.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
index c341960..6dd3bfc 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
@@ -577,6 +577,10 @@ void mxs_handle_5v_conflict(void)
tmp = readl(&power_regs->hw_power_sts);

if (tmp & POWER_STS_VDDIO_BO) {
+ /*
+ * VDDIO has a brownout, then the VDD5V_GT_VDDIO becomes
+ * unreliable
+ */
mxs_powerdown();
break;
}
--
1.7.10.4