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Enable DVFS for Rockchip boards #16

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Enable DVFS for Rockchip boards #16

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19 changes: 19 additions & 0 deletions arch/arm/dts/rk3576-u-boot.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,25 @@
};
};

/*
* Wide temperature DVFS properties for U-Boot.
* These are vendor-specific properties from rk3576 vendor kernel DTS
* that upstream kernel doesn't have. U-Boot DVFS driver needs them.
*
* Values from vendor rk3576.dtsi:
* - rockchip,low-temp = <15000> (15°C in millidegrees)
* - rockchip,max-volt = <950000> (950mV, max from OPP table)
*/
&cluster0_opp_table {
rockchip,low-temp = <15000>;
rockchip,max-volt = <950000>;
};

&cluster1_opp_table {
rockchip,low-temp = <15000>;
rockchip,max-volt = <950000>;
};

#ifdef CONFIG_ROCKCHIP_SPI_IMAGE
&binman {
simple-bin-spi {
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7 changes: 7 additions & 0 deletions arch/arm/mach-rockchip/board.c
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,9 @@
#include <asm/arch-rockchip/clock.h>
#include <asm/arch-rockchip/periph.h>
#include <power/regulator.h>
#ifdef CONFIG_DM_DVFS
#include <dvfs.h>
#endif

#if IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_SUPPORT) && IS_ENABLED(CONFIG_EFI_PARTITION)

Expand Down Expand Up @@ -197,6 +200,10 @@ int board_late_init(void)
gpt_capsule_update_setup();
#endif

#ifdef CONFIG_DM_DVFS
dvfs_init(true);
#endif

return rk_board_late_init();
}

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