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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-06-17 16:42:09 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-06-17 16:42:09 +0200
commit61aba373f5708f2aebc3f72078e51949a068aa6f (patch)
tree0706de7cadecd5a40f7ecece2af24975d7d53ed2 /drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h
parent91f304e6c83b4ad55ef6032f32111296febb40dd (diff)
downloadkernel-linux-5.6.y.tar.gz
Linux 5.6.19linux-5.6.y
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.46.0) at 2026-08-09 21:20:53 +0000
tor Martin Without this, the CPUs are left in a random pstate. Since we don't support deep idle yet (which powers down the CPUs), this results in significantly increased idle power consumption in suspend. Fixes: 6286bbb40576 ("cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states") Signed-off-by: Hector Martin <marcan@marcan.st> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> 2022-12-27cpufreq: apple: remove duplicate intializerArnd Bergmann When -Woverride-init is enabled, gcc notices that the .attr field is initialized twice: drivers/cpufreq/apple-soc-cpufreq.c:331:27: error: initialized field overwritten [-Werror=override-init] 331 | .attr = apple_soc_cpufreq_hw_attr, | ^~~~~~~~~~~~~~~~~~~~~~~~~ Remove the first one, since this is not actually used. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Eric Curtin <ecurtin@redhat.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> 2022-11-30cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-statesHector Martin This driver implements CPU frequency scaling for Apple Silicon SoCs, including M1 (t8103), M1 Max/Pro/Ultra (t600x), and M2 (t8112). Each CPU cluster has its own register set, and frequency management is fully automated by the hardware; the driver only has to write one register. There is boost frequency support, but the hardware will only allow their use if only a subset of cores in a cluster are in non-deep-idle. Since we don't support deep idle yet, these frequencies are not achievable, but the driver supports them. They will remain disabled in the device tree until deep idle is implemented, to avoid confusing users. This driver does not yet implement the memory controller performance state tuning that usually accompanies higher CPU p-states. This will be done in a future patch. Acked-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Hector Martin <marcan@marcan.st> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>