From: Johan Hovold <johan+linaro@kernel.org>
To: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Andy Gross <agross@kernel.org>,
Konrad Dybcio <konrad.dybcio@somainline.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Johan Hovold <johan+linaro@kernel.org>
Subject: [PATCH 0/3] arm64: dts: qcom: sc8280xp: disallow regulator mode switches
Date: Wed, 3 Aug 2022 14:19:39 +0200 [thread overview]
Message-ID: <20220803121942.30236-1-johan+linaro@kernel.org> (raw)
A recent change in a USB/DP PHY driver that started specifying regulator
loads caused the regulators that were also shared with the PCIe and USB
PHYs to be put in low-power mode, something which broke PCIe and USB on
sa8295p-adp.
As was discussed in the following thread:
https://lore.kernel.org/all/YtkrDcjTGhpaU1e0@hovoldconsulting.com
regulators should generally not be allowed to switch to low-power mode
unless some of the consumers can actually support an idle mode.
This series disables mode-switching for all regulators on sc8280xp-crd,
sc8280xp-lenovo-thinkpad-x13s and sa8295p-adp except for the ones used
by the UFS controllers which do support an idle mode.
Johan
Johan Hovold (3):
arm64: dts: qcom: sc8280xp-crd: disallow regulator mode switches
arm64: dts: qcom: sc8280xp-lenovo-thinkpad-x13s: disallow regulator
mode switches
arm64: dts: qcom: sa8295p-adp: disallow regulator mode switches
arch/arm64/boot/dts/qcom/sa8295p-adp.dts | 11 -----------
arch/arm64/boot/dts/qcom/sc8280xp-crd.dts | 9 ---------
.../boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts | 10 ----------
3 files changed, 30 deletions(-)
--
2.35.1
next reply other threads:[~2022-08-03 12:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-03 12:19 Johan Hovold [this message]
2022-08-03 12:19 ` [PATCH 1/3] arm64: dts: qcom: sc8280xp-crd: disallow regulator mode switches Johan Hovold
2022-08-03 12:19 ` [PATCH 2/3] arm64: dts: qcom: sc8280xp-lenovo-thinkpad-x13s: " Johan Hovold
2022-08-03 12:19 ` [PATCH 3/3] arm64: dts: qcom: sa8295p-adp: " Johan Hovold
2022-08-08 8:10 ` [PATCH 0/3] arm64: dts: qcom: sc8280xp: " Manivannan Sadhasivam
2022-08-29 23:45 ` Bjorn Andersson
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