From: Shawn Guo <shawnguo@kernel.org>
To: Petr Benes <petr.benes@ysoft.com>
Cc: "Rob Herring" <robh+dt@kernel.org>,
"Sascha Hauer" <s.hauer@pengutronix.de>,
"Pengutronix Kernel Team" <kernel@pengutronix.de>,
"Fabio Estevam" <festevam@gmail.com>,
"NXP Linux Team" <linux-imx@nxp.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
petrben@gmail.com, stable@vger.kernel.org,
"Michal Vokáč" <michal.vokac@ysoft.com>
Subject: Re: [PATCH] ARM: dts: imx6dl-yapp4: Do not allow PM to switch PU regulator off on Q/QP
Date: Mon, 24 Oct 2022 10:25:34 +0800 [thread overview]
Message-ID: <20221024022534.GC125525@dragon> (raw)
In-Reply-To: <20221004153920.104984-1-petr.benes@ysoft.com>
On Tue, Oct 04, 2022 at 05:39:20PM +0200, Petr Benes wrote:
> Fix our design flaw in supply voltage distribution on the Quad and QuadPlus
> based boards.
>
> The problem is that we supply the SoC cache (VDD_CACHE_CAP) from VDD_PU
> instead of VDD_SOC. The VDD_PU internal regulator can be disabled by PM
> if VPU or GPU is not used. If that happens the system freezes. To prevent
> that configure the reg_pu regulator to be always on.
>
> Fixes: 0de4ab81ab26 ("ARM: dts: imx6dl-yapp4: Add Y Soft IOTA Crux/Crux+ board")
> Cc: petrben@gmail.com
> Cc: stable@vger.kernel.org
> Signed-off-by: Petr Benes <petr.benes@ysoft.com>
> Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Applied, thanks!
prev parent reply other threads:[~2022-10-24 2:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-04 15:39 [PATCH] ARM: dts: imx6dl-yapp4: Do not allow PM to switch PU regulator off on Q/QP Petr Benes
2022-10-24 2:25 ` Shawn Guo [this message]
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