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Wysocki" , "Zhang Rui" , "Lukasz Luba" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Krzysztof Kozlowski" , "Alim Akhtar" , "Bartlomiej Zolnierkiewicz" , "Kees Cook" , "Gustavo A. R. Silva" , "Peter Griffin" , =?utf-8?q?Andr=C3=A9_Draszik?= , "Daniel Lezcano" , "Sylwester Nawrocki" , "Chanwoo Choi" , "Michael Turquette" , "Stephen Boyd" , "Lee Jones" X-Mailer: aerc 0.21.0 References: <20260423-acpm-tmu-v4-0-8b59f8548634@linaro.org> In-Reply-To: <20260423-acpm-tmu-v4-0-8b59f8548634@linaro.org> On Thu Apr 23, 2026 at 4:22 PM BST, Tudor Ambarus wrote: > Add support for the Thermal Management Unit (TMU) on the Google GS101 > SoC. > > The GS101 TMU implementation utilizes a hybrid architecture where > management is shared between the kernel and the Alive Clock and > Power Manager (ACPM) firmware. This hybrid ACPM TMU architecture is=20 > also present on other Samsung Exynos SoCs (e.g., AutoV920, Exynos850). > > Dependencies > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > - context dependency on the ACPM fixes sent at: > Link: https://lore.kernel.org/linux-samsung-soc/20260423-acpm-fixes-sas= hiko-reports-v1-0-2217b790925e@linaro.org/T/#t > - cleanup and prep firmware patches 2, 3, 4, 5, 6, 7: required by the > thermal driver (patch 8). > - bindings (patch 1): required for DTS validation. > - thermal driver patch 8: required by defconfig (patch 11) - logical > dependency.=20 I've took series locally using b4 and result doesn't compile: CC [M] drivers/firmware/samsung/exynos-acpm.o drivers/firmware/samsung/exynos-acpm.c:485:13: error: static declaration of= =E2=80=98acpm_set_xfer=E2=80=99 follows non-static declaration 485 | static void acpm_set_xfer(struct acpm_xfer *xfer, u32 *cmd, size_t = cmdcnt, | ^~~~~~~~~~~~~ In file included from drivers/firmware/samsung/exynos-acpm.c:31: drivers/firmware/samsung/exynos-acpm.h:20:6: note: previous declaration of = =E2=80=98acpm_set_xfer=E2=80=99 with type =E2=80=98void(struct acpm_xfer *,= u32 *, size_t, unsigned int, bool)=E2=80=99 {aka =E2=80=98void(struct ac= pm_xfer *, unsigned int *, long unsigned int, unsigned int, _Bool)=E2=80= =99} 20 | void acpm_set_xfer(struct acpm_xfer *xfer, u32 *cmd, size_t cmdcnt, | ^~~~~~~~~~~~~ drivers/firmware/samsung/exynos-acpm.c:485:13: warning: =E2=80=98acpm_set_x= fer=E2=80=99 defined but not used [-Wunused-function] 485 | static void acpm_set_xfer(struct acpm_xfer *xfer, u32 *cmd, size_t = cmdcnt, | ^~~~~~~~~~~~~ make[5]: *** [scripts/Makefile.build:289: drivers/firmware/samsung/exynos-a= cpm.o] Error 1 (applies cleanly though). Could be related to "[PATCH v4 02/11] firmware: samsung: acpm: Consolidate transfer initialization helper". Anything missing from dependencies/prerequisites? [..] > Tudor Ambarus (11): > dt-bindings: thermal: Add Google GS101 TMU > firmware: samsung: acpm: Consolidate transfer initialization helper > firmware: samsung: acpm: Annotate rx_data->cmd with __counted_by_pt= r > firmware: samsung: acpm: Drop redundant _ops suffix in acpm_ops mem= bers > firmware: samsung: acpm: Make acpm_ops const and access via pointer > firmware: samsung: acpm: Add TMU protocol support > firmware: samsung: acpm: Add devm_acpm_get_by_phandle helper > thermal: samsung: Add Exynos ACPM TMU driver GS101 > MAINTAINERS: Add entry for Samsung Exynos ACPM thermal driver > arm64: dts: exynos: gs101: Add thermal management unit > arm64: defconfig: enable Exynos ACPM thermal support > > .../bindings/thermal/google,gs101-tmu-top.yaml | 68 +++ > MAINTAINERS | 8 + > arch/arm64/boot/dts/exynos/google/gs101-tmu.dtsi | 136 +++++ > arch/arm64/boot/dts/exynos/google/gs101.dtsi | 18 + > arch/arm64/configs/defconfig | 1 + > drivers/clk/samsung/clk-acpm.c | 8 +- > drivers/firmware/samsung/Makefile | 1 + > drivers/firmware/samsung/exynos-acpm-dvfs.c | 20 +- > drivers/firmware/samsung/exynos-acpm-pmic.c | 20 +- > drivers/firmware/samsung/exynos-acpm-tmu.c | 240 +++++++++ > drivers/firmware/samsung/exynos-acpm-tmu.h | 28 ++ > drivers/firmware/samsung/exynos-acpm.c | 113 +++-- > drivers/firmware/samsung/exynos-acpm.h | 2 + > drivers/mfd/sec-acpm.c | 6 +- > drivers/thermal/samsung/Kconfig | 17 + > drivers/thermal/samsung/Makefile | 2 + > drivers/thermal/samsung/acpm-tmu.c | 547 +++++++++++++++= ++++++ > .../linux/firmware/samsung/exynos-acpm-protocol.h | 32 +- > 18 files changed, 1195 insertions(+), 72 deletions(-) > --- > base-commit: 2e68039281932e6dc37718a1ea7cbb8e2cda42e6 > change-id: 20260113-acpm-tmu-27e21f0e2c3b > prerequisite-change-id: 20260423-acpm-fixes-sashiko-reports-ae28b6ed5581:= v1 > prerequisite-patch-id: 18d89d0e2bc0efe2cb366746ac4db36f4682f061 > prerequisite-patch-id: eb4f90add371877a1930c442c5464c4da7242889 > prerequisite-patch-id: 021cd1ee6d2b93f554dd5098cd1158977294dc41 > prerequisite-patch-id: b5da16b5c6d6731ea519ed68302fd52ce57c7ffa Best regards, Alexey