From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: Adam YH Lee <adam.yh.lee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
ashcharles-EiDWdcs9+yZBDgjK7y7TUQ@public.gmane.org,
arun-EiDWdcs9+yZBDgjK7y7TUQ@public.gmane.org
Subject: Re: [PATCH v2] ARM: dts: configure regulators for Gumstix Pepper
Date: Mon, 13 Jul 2015 23:49:31 -0700 [thread overview]
Message-ID: <20150714064931.GC17550@atomide.com> (raw)
In-Reply-To: <1436481477-18002-1-git-send-email-adam.yh.lee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
* Adam YH Lee <adam.yh.lee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> [150709 15:40]:
> Boot process is halting in midway because some of the necessary voltage
> regulators are deemed unused and subsequently powered off, leading to
> a completely unresponsive system.
>
> Most of the device nodes had correct voltage regulator attachments.
> Yet these nodes had to set stricter enforcement on them through
> 'regulator-boot-on' and 'regulator-always-on' to function correctly.
>
> The consumers of the regulators this commit affect are the followings:
>
> DCDC1: vdd_1v8 system supply, USB-PHY, and ADC
> DCDC2: Core domain
> DCDC3: MPU core domain
> LDO1: RTC
> LDO2: 3v3 IO domain
> LDO3: USB-PHY; not a boot-time requirement
> LDO4: LCD [16:23]
>
> All but LDO3 need to be always-on for the system to be functional.
>
> Additionally regulator-name properties have been added for the kernel to
> display the name from the schematic. This will improve diagnostics.
Thanks for updating the description, applying this into
omap-for-v4.2/fixes.
Tony
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WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] ARM: dts: configure regulators for Gumstix Pepper
Date: Mon, 13 Jul 2015 23:49:31 -0700 [thread overview]
Message-ID: <20150714064931.GC17550@atomide.com> (raw)
In-Reply-To: <1436481477-18002-1-git-send-email-adam.yh.lee@gmail.com>
* Adam YH Lee <adam.yh.lee@gmail.com> [150709 15:40]:
> Boot process is halting in midway because some of the necessary voltage
> regulators are deemed unused and subsequently powered off, leading to
> a completely unresponsive system.
>
> Most of the device nodes had correct voltage regulator attachments.
> Yet these nodes had to set stricter enforcement on them through
> 'regulator-boot-on' and 'regulator-always-on' to function correctly.
>
> The consumers of the regulators this commit affect are the followings:
>
> DCDC1: vdd_1v8 system supply, USB-PHY, and ADC
> DCDC2: Core domain
> DCDC3: MPU core domain
> LDO1: RTC
> LDO2: 3v3 IO domain
> LDO3: USB-PHY; not a boot-time requirement
> LDO4: LCD [16:23]
>
> All but LDO3 need to be always-on for the system to be functional.
>
> Additionally regulator-name properties have been added for the kernel to
> display the name from the schematic. This will improve diagnostics.
Thanks for updating the description, applying this into
omap-for-v4.2/fixes.
Tony
next prev parent reply other threads:[~2015-07-14 6:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 22:37 [PATCH v2] ARM: dts: configure regulators for Gumstix Pepper Adam YH Lee
2015-07-09 22:37 ` Adam YH Lee
[not found] ` <1436481477-18002-1-git-send-email-adam.yh.lee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-07-14 6:49 ` Tony Lindgren [this message]
2015-07-14 6:49 ` Tony Lindgren
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