linux-kernel - Re: (subset) [PATCH v1 1/1] arm64: dts: qcom: qcs615: Set LDO12A regulator to HPM to avoid boot hang

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Message-ID: <175495482457.157244.16977167154606922012.b4-ty@kernel.org>
Date: Mon, 11 Aug 2025 18:27:11 -0500
From: Bjorn Andersson <andersson@...nel.org>
To: konradybcio@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	jingoohan1@...il.com,
	mani@...nel.org,
	lpieralisi@...nel.org,
	kwilczynski@...nel.org,
	bhelgaas@...gle.com,
	johan+linaro@...nel.org,
	vkoul@...nel.org,
	kishon@...nel.org,
	neil.armstrong@...aro.org,
	abel.vesa@...aro.org,
	Ziyue Zhang <ziyue.zhang@....qualcomm.com>
Cc: linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org,
	linux-phy@...ts.infradead.org,
	qiang.yu@....qualcomm.com,
	quic_krichai@...cinc.com,
	quic_vbadigan@...cinc.com,
	Tingguo Cheng <quic_tingguoc@...cinc.com>
Subject: Re: (subset) [PATCH v1 1/1] arm64: dts: qcom: qcs615: Set LDO12A regulator to HPM to avoid boot hang


On Wed, 16 Jul 2025 11:06:01 +0800, Ziyue Zhang wrote:
> On certain platforms (e.g., QCS615), consumers of LDO12A—such as PCIe,
> UFS, and eMMC—may draw more than 10mA of current during boot. This can
> exceed the regulator's limit in Low Power Mode (LPM), triggering current
> limit protection and causing the system to hang.
> 
> To address this, there are two possible approaches:
> a) Set the regulator's initial mode to High Performance Mode (HPM) in
>    the device tree.
> b) Keep the default LPM setting and have each consumer driver explicitly
>    set its current load.
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: qcom: qcs615: Set LDO12A regulator to HPM to avoid boot hang
      commit: fba47ba8c8a8ffa9d8ad1836396837a998bb5153

Best regards,
-- 
Bjorn Andersson <andersson@...nel.org>