Bjorn Andersson 7a7cb5266b pmdomain: qcom: rpmhpd: Fix enabled_corner aggregation ... commit 2a93c6cbd5 upstream. Commit 'e3e56c050ab6 ("soc: qcom: rpmhpd: Make power_on actually enable the domain")' aimed to make sure that a power-domain that is being enabled without any particular performance-state requested will at least turn the rail on, to avoid filling DeviceTree with otherwise unnecessary required-opps properties. But in the event that aggregation happens on a disabled power-domain, with an enabled peer without performance-state, both the local and peer corner are 0. The peer's enabled_corner is not considered, with the result that the underlying (shared) resource is disabled. One case where this can be observed is when the display stack keeps mmcx enabled (but without a particular performance-state vote) in order to access registers and sync_state happens in the rpmhpd driver. As mmcx_ao is flushed the state of the peer (mmcx) is not considered and mmcx_ao ends up turning off "mmcx.lvl" underneath mmcx. This has been observed several times, but has been painted over in DeviceTree by adding an explicit vote for the lowest non-disabled performance-state. Fixes: e3e56c050a ("soc: qcom: rpmhpd: Make power_on actually enable the domain") Reported-by: Johan Hovold <johan@kernel.org> Closes: https://lore.kernel.org/linux-arm-msm/ZdMwZa98L23mu3u6@hovoldconsulting.com/ Cc: <stable@vger.kernel.org> Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Tested-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20240226-rpmhpd-enable-corner-fix-v1-1-68c004cec48c@quicinc.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-03-06 14:37:50 +00:00
..
actions
amlogic	drivers: meson: secure-pwrc: always enable DMA domain	2023-07-27 08:43:55 +02:00
aspeed
atmel
bcm
dove
fsl	soc/fsl/qe: fix usb.c build errors	2023-07-27 08:43:49 +02:00
gemini
imx
ixp4xx
kendryte
lantiq
mediatek
qcom	pmdomain: qcom: rpmhpd: Fix enabled_corner aggregation	2024-03-06 14:37:50 +00:00
renesas	pmdomain: renesas: r8a77980-sysc: CR7 must be always on	2024-03-01 13:16:45 +01:00
rockchip
samsung
sifive
sunxi	soc: sunxi: sram: Fix debugfs info for A64 SRAM C	2022-10-05 10:38:41 +02:00
tegra	soc/tegra: fuse: Drop Kconfig dependency on TEGRA20_APB_DMA	2022-10-26 13:25:29 +02:00
ti	soc: ti: pm33xx: Fix refcount leak in am33xx_pm_probe	2023-05-17 11:47:39 +02:00
ux500	ARM: ux500: do not directly dereference __iomem	2023-01-14 10:16:30 +01:00
versatile
xilinx
zte
Kconfig
Makefile