From: Bjorn Andersson <andersson@kernel.org>
To: konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, jingoohan1@gmail.com, mani@kernel.org,
lpieralisi@kernel.org, kwilczynski@kernel.org,
bhelgaas@google.com, johan+linaro@kernel.org, vkoul@kernel.org,
kishon@kernel.org, neil.armstrong@linaro.org,
abel.vesa@linaro.org, Ziyue Zhang <quic_ziyuzhan@quicinc.com>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
linux-phy@lists.infradead.org, qiang.yu@oss.qualcomm.com,
quic_krichai@quicinc.com, quic_vbadigan@quicinc.com,
Ziyue Zhang <ziyue.zhang@oss.qualcomm.com>,
Tingguo Cheng <quic_tingguoc@quicinc.com>
Subject: Re: (subset) [PATCH v2 1/1] arm64: dts: qcom: qcs615: Set LDO12A regulator to HPM to avoid boot hang
Date: Mon, 11 Aug 2025 18:27:08 -0500 [thread overview]
Message-ID: <175495482442.157244.678684703517788074.b4-ty@kernel.org> (raw)
In-Reply-To: <20250717072746.987298-1-quic_ziyuzhan@quicinc.com>
On Thu, 17 Jul 2025 15:27:46 +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@kernel.org>
prev parent reply other threads:[~2025-08-11 23:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-17 7:27 [PATCH v2 1/1] arm64: dts: qcom: qcs615: Set LDO12A regulator to HPM to avoid boot hang Ziyue Zhang
2025-08-11 23:27 ` Bjorn Andersson [this message]
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