[U-Boot] [PATCH 2/3] colibri_t20: enable early pmic rail configuration

Marcel Ziswiler
2015-08-20T07:52:42Z

Enable early TPS6586X PMIC rail configuration setting SM0 being
VDD_CORE_1.2V to 1.2 volts and SM1 being VDD_CPU_1.0V to 1.0 volts.

While those are PMIC power-up defaults the SoC might have been reset
separately with certain rails being left at lower DVFS states which
is e.g. the case upon watchdog reset while otherwise nearly idling.

This fixes an issue being stuck in U-Boot's SPL upon watchdog reset
(e.g. running downstream L4T Linux kernel as there exists no mainline
Tegra20 watchdog driver as of yet).

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
---

include/configs/colibri_t20.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/include/configs/colibri_t20.h b/include/configs/colibri_t20.h
index 7611fc5..124d767 100644
--- a/include/configs/colibri_t20.h
+++ b/include/configs/colibri_t20.h
@@ -13,6 +13,8 @@

#define CONFIG_ARCH_MISC_INIT

+#define CONFIG_TEGRA_EARLY_TPS6586X
+
/* High-level configuration options */
#define CONFIG_TEGRA_BOARD_STRING "Toradex Colibri T20"

--
2.4.3