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Various MediaTek SoCs use GPU integration silicon named "MFlexGraphics" by MediaTek. On the MT8196 and MT6991 SoCs, interacting with this integration silicon is required to power on the GPU. This glue silicon is in the form of an embedded microcontroller running special-purpose firmware, which autonomously adjusts clocks and regulators. Implement a driver, modelled as a pmdomain driver with a set_performance_state operation, to support these SoCs. The driver also exposes the actual achieved clock rate, as read back from the MCU, as common clock framework clocks, by acting as a clock provider as well. Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
13 lines
572 B
Makefile
13 lines
572 B
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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obj-$(CONFIG_MTK_MFG_PM_DOMAIN) += mtk-mfg-pmdomain.o
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obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o
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obj-$(CONFIG_MTK_SCPSYS_PM_DOMAINS) += mtk-pm-domains.o
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obj-$(CONFIG_AIROHA_CPU_PM_DOMAIN) += airoha-cpu-pmdomain.o
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ifeq ($(CONFIG_THUMB2_KERNEL)$(CONFIG_CC_IS_CLANG),yy)
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# The use of R7 in the SMCCC conflicts with the compiler's use of R7 as a frame
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# pointer in Thumb2 mode, which is forcibly enabled by Clang when profiling
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# hooks are inserted via the -pg switch.
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CFLAGS_REMOVE_airoha-cpu-pmdomain.o += $(CC_FLAGS_FTRACE)
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endif
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