diff options
| author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2020-07-19 19:32:12 +0200 |
|---|---|---|
| committer | Kevin Hilman <khilman@baylibre.com> | 2020-07-21 14:12:38 -0700 |
| commit | 8f16cfabbc0a6c52b114eca2ff8e95bb07949741 (patch) | |
| tree | dc9e18fcc29aad7b9882cdda0f32d6e1101d8ba9 /arch/arm64/boot | |
| parent | 46ffadc7e658277d7559899d7f641f14a3cfae8c (diff) | |
| download | linux-8f16cfabbc0a6c52b114eca2ff8e95bb07949741.tar.bz2 | |
arm64: dts: amlogic: meson-gxm: add the Mali OPP table and use DVFS
Add the OPP table for the Mali-T820 GPU and drop the hardcoded initial
clock configuration. This enables GPU DVFS and thus saves power when the
GPU is not in use while still being able switch to a higher clock on
demand.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20200719173213.639540-3-martin.blumenstingl@googlemail.com
Diffstat (limited to 'arch/arm64/boot')
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/meson-gxm.dtsi | 45 |
1 files changed, 30 insertions, 15 deletions
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi index 40e3e123e05b..fe4145112295 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi @@ -82,6 +82,35 @@ #cooling-cells = <2>; }; }; + + gpu_opp_table: opp-table { + compatible = "operating-points-v2"; + + opp-125000000 { + opp-hz = /bits/ 64 <125000000>; + opp-microvolt = <950000>; + }; + opp-250000000 { + opp-hz = /bits/ 64 <250000000>; + opp-microvolt = <950000>; + }; + opp-285714285 { + opp-hz = /bits/ 64 <285714285>; + opp-microvolt = <950000>; + }; + opp-400000000 { + opp-hz = /bits/ 64 <400000000>; + opp-microvolt = <950000>; + }; + opp-500000000 { + opp-hz = /bits/ 64 <500000000>; + opp-microvolt = <950000>; + }; + opp-666666666 { + opp-hz = /bits/ 64 <666666666>; + opp-microvolt = <950000>; + }; + }; }; &apb { @@ -106,21 +135,7 @@ interrupt-names = "job", "mmu", "gpu"; clocks = <&clkc CLKID_MALI>; resets = <&reset RESET_MALI_CAPB3>, <&reset RESET_MALI>; - - /* - * Mali clocking is provided by two identical clock paths - * MALI_0 and MALI_1 muxed to a single clock by a glitch - * free mux to safely change frequency while running. - */ - assigned-clocks = <&clkc CLKID_MALI_0_SEL>, - <&clkc CLKID_MALI_0>, - <&clkc CLKID_MALI>; /* Glitch free mux */ - assigned-clock-parents = <&clkc CLKID_FCLK_DIV3>, - <0>, /* Do Nothing */ - <&clkc CLKID_MALI_0>; - assigned-clock-rates = <0>, /* Do Nothing */ - <666666666>, - <0>; /* Do Nothing */ + operating-points-v2 = <&gpu_opp_table>; }; }; |