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path: root/drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c
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2024-01-30phy: qcom: qmp: move common bits definitions to common headerDmitry Baryshkov1-9/+1
Move bit definitions for the common headers to the common phy-qcom-qmp.h header. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20240126-phy-qmp-merge-common-v2-5-a463d0b57836@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2024-01-30phy: qcom: qmp: move common functions to common headerDmitry Baryshkov1-54/+6
Move common init tables code to the common header phy-qcom-qmp-common.h. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20240126-phy-qmp-merge-common-v2-3-a463d0b57836@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-07-17phy: Explicitly include correct DT includesRob Herring1-1/+0
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for drivers/phy/phy-can-transceiver.c Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> Link: https://lore.kernel.org/r/20230714174841.4061919-1-robh@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-05-08phy: qcom-qmp-pcie-msm8996: fix init-count imbalanceJohan Hovold1-2/+3
The init counter is not decremented on initialisation errors, which prevents retrying initialisation. Add the missing decrement on initialisation errors so that the counter reflects the state of the device. Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets") Cc: stable@vger.kernel.org # 4.12 Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20230502103810.12061-3-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-01-12phy: qcom-qmp-pcie-msm8996: rework regs layout arraysDmitry Baryshkov1-3/+3
Use symbolic names for the values inside reg layout arrays. New register names are added following the PCS register layout that is used by the particular PHY. Note: ipq8074 tables appear to use a mixture of v2 and v3 registers. This might need additional fixes. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20221110192248.873973-6-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-11-24phy: qcom-qmp: drop unused type headerJohan Hovold1-2/+0
The PHY type defines are no longer used in the PCIe, UFS and USB QMP drivers so drop the corresponding include. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20221111094239.11547-2-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-28phy: qcom-qmp-pcie-msm8996: drop start and pwrdn-ctrl abstractionJohan Hovold1-10/+7
Drop the start and pwrdn-ctrl abstractions which are no longer needed since the QMP driver split. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20221012085002.24099-18-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-28phy: qcom-qmp-pcie-msm8996: increase status polling periodJohan Hovold1-2/+2
It typically takes between one and two milliseconds for the PHY to become ready after starting it. Increase the tight 3--10 us polling period to the more reasonable 51--200 us. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20221012085002.24099-7-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-28phy: qcom-qmp-pcie-msm8996: clean up ready and status pollingJohan Hovold1-15/+4
Clean up the PHY ready and status polling by dropping the configuration masks which are no longer needed since the QMP driver split. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20221012085002.24099-6-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-28phy: qcom-qmp-pcie-msm8996: drop power-down delay configJohan Hovold1-13/+2
The power-down delay was included in the first version of the QMP driver for MSM8996 as an optional delay after powering on the PHY (using POWER_DOWN_CONTROL) and just before starting it. Later changes modified this sequence by powering on before initialising the PHY, but the optional delay stayed where it was (i.e. before starting the PHY). The vendor driver does not use a delay before starting the PHY and this is likely not needed on any platform unless there is a corresponding delay in the vendor kernel init sequence tables (i.e. in devicetree). Let's keep the delay for now, but drop the redundant configuration options while increasing the unnecessarily low timer slack somewhat. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20221012081241.18273-11-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-28phy: qcom-qmp-pcie-msm8996: drop unused in-layout configurationJohan Hovold1-28/+6
The MSM8996 QMP PCIe PHY driver no longer uses the "in-layout" configuration macro to configure registers that are typically accessed using "regs_layout" arrays (e.g. QPHY_START_CTRL) so drop this unused feature. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20221012081241.18273-6-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-28phy: qcom-qmp: drop superfluous commentsJohan Hovold1-3/+0
Drop some unnecessary or incorrect comments. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20221012081241.18273-3-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-28phy: qcom-qmp: drop regulator error messageJohan Hovold1-2/+1
Regulator core already logs an error message in case requesting a regulator fails so drop the mostly redundant error message from probe. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20221012081241.18273-2-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-17phy: qcom-qmp-pcie-msm8996: clean up power-down handlingJohan Hovold1-8/+2
This driver uses v2 registers only so drop the unnecessary POWER_DOWN_CONTROL override. Note that this register is already hard-coded when powering on the PHY. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20221017065013.19647-7-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-17phy: qcom-qmp: fix obsolete lane commentsJohan Hovold1-1/+1
All QMP drivers but the MSM8996 and combo ones handle exactly one PHY and the corresponding memory resources are not per-lane, but per PHY. Update the obsolete comments. Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20221017065013.19647-2-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-24phy: qcom-qmp-pcie-msm8996: Use dev_err_probe() to simplify codeYuan Can1-6/+3
In the probe path, dev_err() can be replaced with dev_err_probe() which will check if error code is -EPROBE_DEFER and prints the error name. It also sets the defer probe reason which can be checked later through debugfs. Signed-off-by: Yuan Can <yuancan@huawei.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Andrew Halaney <ahalaney@redhat.com> Link: https://lore.kernel.org/r/20220924070300.25080-3-yuancan@huawei.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-24phy: qcom-qmp-pcie-msm8996: rename nlanes configJohan Hovold1-4/+4
The nlanes configuration parameter is really the number of PHYs provided by this QMP block on MSM8996. Rename it accordingly. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20220920073826.20811-14-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-24phy: qcom-qmp-pcie-msm8996: drop unused kernel docJohan Hovold1-1/+0
Drop the removed mode field from the struct qmp_phy kernel doc. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20220920073826.20811-9-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-24phy: qcom-qmp: drop unused forward declarationsJohan Hovold1-2/+0
Only the combo QMP driver needs a forward declaration of struct qmp_phy. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20220920073826.20811-8-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-24phy: qcom-qmp-pcie-msm8996: drop unused type from configJohan Hovold1-3/+0
The configuration PHY type is no longer used since the QMP driver split so drop it from the configuration. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20220920073826.20811-3-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-20phy: qcom-qmp-pcie-msm8996: drop unused pcs_misc handlingJohan Hovold1-14/+0
The MSM8996 QMP PHY driver does not use the PCS_MISC IO region (and neither do the DT binding specify it) so remove the corresponding code from the driver. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20220916102340.11520-8-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-20phy: qcom-qmp-pcie-msm8996: fix memleak on probe deferralJohan Hovold1-12/+11
Switch to using the device-managed of_iomap helper to avoid leaking memory on probe deferral and driver unbind. Note that this helper checks for already reserved regions and may fail if there are multiple devices claiming the same memory. Fixes: e78f3d15e115 ("phy: qcom-qmp: new qmp phy driver for qcom-chipsets") Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20220916102340.11520-4-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-20phy: qcom-qmp-pcie-msm8996: shorten function prefixesJohan Hovold1-47/+46
The driver function prefix has gotten unnecessarily long and hurts readability. Shorten "qcom_qmp_phy_" to "qmp_" (which likely stands for "Qualcomm Multi PHY" or similar anyway). Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220907110728.19092-15-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-20phy: qcom-qmp-pcie-msm8996: drop unused secondary init tablesJohan Hovold1-26/+0
Drop the secondary register initialisation tables which aren't used by this driver. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220907110728.19092-14-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-20phy: qcom-qmp: silence noisy probeJohan Hovold1-2/+0
Drivers should in general not log anything during unless there are errors. Drop the pointless registration info message from the QMP drivers. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220907110728.19092-12-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-20phy: qcom-qmp-pcie-msm8996: drop unused definesJohan Hovold1-26/+1
Drop defines and enums that are unused since the QMP driver split. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20220907110728.19092-7-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-20phy: qcom-qmp-pcie-msm8996: drop unused runtime PM implementationJohan Hovold1-37/+0
Drop the unused and incomplete runtime PM implementation, which was only used by USB PHYs before splitting the QMP driver. Note that the runtime PM was never disabled (and state restored) on driver unbind. This effectively reverts commit ac0d239936bd ("phy: qcom-qmp: Add support for runtime PM"). Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220907110728.19092-6-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-08-30phy: qcom-qmp-pcie-msm8996: drop reset lane suffixJohan Hovold1-4/+1
The lane reset is defined in the "lane" node so there's no need to keep adding a redundant lane-number suffix to the reset name. Update driver to support the new binding where the "lane" reset name has been deprecated by instead requesting the reset by index. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20220830112923.3725-30-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-08-30phy: qcom-qmp-pcie-msm8996: drop pipe clock lane suffixJohan Hovold1-2/+1
The pipe clock is defined in the "lane" node so there's no need to keep adding a redundant lane-number suffix to the clock name. Update driver to support the new binding where the pipe clock name has been deprecated by instead requesting the clock by index. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20220830112923.3725-29-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-07-07phy: qcom-qmp-usb: define QPHY_V2_PCS_PLL_LOCK_CHK_DLY_TIME registerDmitry Baryshkov1-3/+1
Other PHYs tables directly reference QPHY_PLL_LOCK_CHK_DLY_TIME register without using reglayout. Define corresponding register to be used by msm8996 PHY tables and use it directly. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220705094320.1313312-29-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-07-07phy: qcom-qmp-usb: replace FLL layout writes for msm8996Dmitry Baryshkov1-10/+0
Other PHYs tables directly reference FLL registers without using reglayout. Define corresponding registers to be used by msm8996 PHY tables and use them directly. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220705094320.1313312-28-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-07-07phy: qcom-qmp: rename QMP V2 PCS registersDmitry Baryshkov1-10/+10
Rename QMP V2 PCS registers to follow the usual pattern of QPHY_V2_PCS_*. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220705094320.1313312-7-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-07-05phy: qcom-qmp-pcie-msm8996: drop obsolete pipe clock type checkJohan Hovold1-17/+2
Drop the obsolete pipe clock handling which was used to treat the pipe clock as optional for types other than PCIe and USB and which is no longer needed since splitting the PHY driver. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220623113314.29761-3-johan+linaro@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-06-17phy: qcom-qmp: fix msm8996 PCIe PHY supportDmitry Baryshkov1-2/+2
Replace init/exit ops with power_on/power_off which should be used for the PCIe PHYs to fix PHY initialization. Fixes: f575ac2d64e7 ("phy: qcom-qmp-pcie-msm8996: drop support for non-PCIe PHY types") Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220610185542.3662484-2-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-06-09phy: qcom-qmp-pcie-msm8996: use bulk reset_control APIDmitry Baryshkov1-31/+18
Switch qcom-qmp-pcie-msm8996 driver to use reset_control_bulk_assert / _deassert functions rather than hardcoding the loops in the driver itself. Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> # UFS, PCIe and USB on SC8180X Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220607213203.2819885-30-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-06-09phy: qcom-qmp-pcie-msm8996: cleanup the driverDmitry Baryshkov1-227/+41
Remove the conditionals and options that are not used by the MSM8996 PCIe PHY device. Hardcode has_lane_rst and has_phy_com_ctrl as this is the case for this PHY. Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> # UFS, PCIe and USB on SC8180X Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220607213203.2819885-22-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-06-09phy: qcom-qmp-pcie-msm8996: drop support for non-PCIe PHY typesDmitry Baryshkov1-489/+43
Drop remaining support for PHY types other than PCIe. Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> # UFS, PCIe and USB on SC8180X Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220607213203.2819885-17-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-06-09phy: qcom-qmp-pcie: change symbol prefix to qcom_qmp_phy_pcie_msm8996Dmitry Baryshkov1-79/+79
Change all symbol names to start with qcom_qmp_phy_pcie_msm8996_ rather than old qcom_qmp_phy_. Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> # UFS, PCIe and USB on SC8180X Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220607213203.2819885-10-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-06-09phy: qcom-qmp-pcie-msm8996: drop all compatibles except msm8996-pcie-phyDmitry Baryshkov1-4628/+4
Drop support for all compatibles from the new qmp-pcie driver except the qcom,msm8996-qmp-pcie-phy. This PHY differs from the rest of PCIe PHYs, so it warrants a separate device driver. Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> # UFS, PCIe and USB on SC8180X Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220607213203.2819885-4-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-06-09phy: qcom-qmp: create copies of QMP PHY driverDmitry Baryshkov1-0/+6350
In order to split and cleanup the single monstrous QMP PHY driver, create blind copies of the current file. They will be used for: - PCIe (and a separate msm8996 PCIe PHY driver) - UFS - USB - Combo DP + USB Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> # UFS, PCIe and USB on SC8180X Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220607213203.2819885-2-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
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