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linux/include/soc
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Maulik Shah 3988a2850b soc: qcom: rpmh-rsc: Enhance check for VRM in-flight request 
commit f592cc5794 upstream.

Each RPMh VRM accelerator resource has 3 or 4 contiguous 4-byte aligned
addresses associated with it. These control voltage, enable state, mode,
and in legacy targets, voltage headroom. The current in-flight request
checking logic looks for exact address matches. Requests for different
addresses of the same RPMh resource as thus not detected as in-flight.

Add new cmd-db API cmd_db_match_resource_addr() to enhance the in-flight
request check for VRM requests by ignoring the address offset.

This ensures that only one request is allowed to be in-flight for a given
VRM resource. This is needed to avoid scenarios where request commands are
carried out by RPMh hardware out-of-order leading to LDO regulator
over-current protection triggering.

Fixes: 658628e7ef ("drivers: qcom: rpmh-rsc: add RPMH controller for QCOM SoCs")
Cc: stable@vger.kernel.org
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Tested-by: Elliot Berman <quic_eberman@quicinc.com> # sm8650-qrd
Signed-off-by: Maulik Shah <quic_mkshah@quicinc.com>
Link: https://lore.kernel.org/r/20240215-rpmh-rsc-fixes-v4-1-9cbddfcba05b@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-06-16 13:41:33 +02:00
..
arc clocksource/drivers/arc_timer: Eliminate redefined macro error 2021-10-16 22:15:01 +02:00
at91 ARM: at91: pm: avoid soft resetting AC DLL 2022-11-01 12:25:19 +02:00
bcm2835 firmware: raspberrypi: Add RPI_FIRMWARE_NOTIFY_DISPLAY_DONE 2022-01-11 13:16:10 +01:00
canaan clk: Add RISC-V Canaan Kendryte K210 clock driver 2021-02-22 17:51:04 -08:00
fsl soc: fsl: qbman: Add CGR update function 2022-09-05 14:27:39 +01:00
imx ARM: imx: Initialize SoC ID on i.MX50 2021-05-13 15:42:21 +08:00
mediatek memory: mtk-smi: Add enable IOMMU SMC command for MM master 2022-08-30 20:54:05 +03:00
microchip clk: microchip: mpfs: add reset controller 2022-09-14 10:55:17 +03:00
mscc net: mscc: ocelot: don't keep PTP configuration of all ports in single structure 2023-07-19 16:22:01 +02:00
qcom soc: qcom: rpmh-rsc: Enhance check for VRM in-flight request 2024-06-16 13:41:33 +02:00
rockchip soc: rockchip: power-domain: Manage resource conflicts with firmware 2022-05-09 03:36:52 +09:00
sa1100 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sifive soc: sifive: ccache: Rename SiFive L2 cache to Composable cache. 2022-10-13 11:06:51 -07:00
tegra soc/tegra: cbb: Add CBB 1.0 driver for Tegra194 2022-09-15 12:41:36 +02:00