From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/3] colibri_t20: enable early pmic rail configuration
Date: Thu, 20 Aug 2015 14:02:19 -0600 [thread overview]
Message-ID: <55D6324B.4080502@wwwdotorg.org> (raw)
In-Reply-To: <1440057163-20081-3-git-send-email-marcel.ziswiler@toradex.com>
On 08/20/2015 01:52 AM, Marcel Ziswiler wrote:
> 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).
Rather than enable this with yet another CONFIG_ option, perhaps we can
put this code into a C file dedicated to the colibri_t20 board, and then
have the common code call it (and implement a weak function that does
nothing to satisfy the linker on other boards).
next prev parent reply other threads:[~2015-08-20 20:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-20 7:52 [U-Boot] [PATCH 0/3] arm: tegra20/colibri_t20: early pmic rail configuration Marcel Ziswiler
2015-08-20 7:52 ` [U-Boot] [PATCH 1/3] arm: tegra20: implement " Marcel Ziswiler
2015-08-20 20:01 ` Stephen Warren
2015-08-20 7:52 ` [U-Boot] [PATCH 2/3] colibri_t20: enable " Marcel Ziswiler
2015-08-20 20:02 ` Stephen Warren [this message]
2015-08-20 7:52 ` [U-Boot] [PATCH 3/3] colibri_t20: get rid of spurious MAX_I2C_RETRY define Marcel Ziswiler
2015-08-20 19:59 ` [U-Boot] [PATCH 0/3] arm: tegra20/colibri_t20: early pmic rail configuration Stephen Warren
-- strict thread matches above, loose matches on Subject: below --
2015-08-20 23:13 [U-Boot] [PATCH 2/3] colibri_t20: enable " Marcel Ziswiler
2015-08-24 16:29 ` Stephen Warren
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