arm64: dts: meson: odroid-n2: extend cpu opp-points
Subsystems (2)
PATCH v2 1/1 arm64: dts: meson: odroid-n2: extend cpu opp-points
Odroid N2 has a large heatsink and HardKernel supports overclock through the addition to extra opp points in their official kernel sources [1]. Add these to the N2 dts only, as other S922X devices may not have suitable heatsinks.
[1] https://github.com/hardkernel/linux/commit/f86cd9487c7483b2a05f448b9ebacf6bd5a2ad2f
--- .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts +19 -0
@@ -260,6 +260,25 @@ }; }; }; + + cpu_opp_table_0: opp-table-0 { + opp-1992000000 { + opp-hz = /bits/ 64 <1992000000>; + opp-microvolt = <1001000>; + }; + }; + + cpub_opp_table_1: opp-table-1 { + opp-1800000000 { + opp-hz = /bits/ 64 <1800000000>; + opp-microvolt = <981000>; + }; + + opp-1908000000 { + opp-hz = /bits/ 64 <1908000000>; + opp-microvolt = <1022000>; + }; + }; }; &arb {
Signature · 1 line
2.17.1
Quoted 10 lines · Tim Lewis
Odroid N2 has a large heatsink and HardKernel supports overclock through the addition to extra opp points in their official kernel sources [1]. Add these to the N2 dts only, as other S922X devices may not have suitable heatsinks.
[1] https://github.com/hardkernel/linux/commit/f86cd9487c7483b2a05f448b9ebacf6bd5a2ad2f
Signed-off-by Tim Lewis <[email protected]>
Kodi is not a demanding workload, but the extra opp points are being used:
N2:~ # cat /sys/devices/system/cpu/cpufreq/policy0/stats/trans_table
From : To
: 100000 250000 500000 667000 1000000 1200000 1398000 1512000 1608000 1704000 1896000 1992000 100000: 0 20465 294 81 47 0 1 0 0 0 0 183 250000: 20388 0 161 52 59 0 0 0 1 0 1 169 500000: 199 256 0 9 47 1 2 0 0 0 0 57 667000: 177 50 10 0 284 1 1 0 0 0 0 136 1000000: 230 12 15 284 0 1 2 0 0 0 0 285 1200000: 0 0 0 1 0 0 0 0 0 1 0 2 1398000: 1 1 0 2 0 0 0 0 1 1 0 3 1512000: 0 0 0 0 0 0 0 0 0 1 0 2 1608000: 0 0 0 0 0 0 0 1 0 0 0 2 1704000: 0 1 0 0 0 0 1 0 0 0 0 2 1896000: 0 0 1 0 0 0 0 0 0 0 0 1 1992000: 76 47 90 230 392 0 2 2 1 1 1 0
N2:~ # cat /sys/devices/system/cpu/cpufreq/policy2/stats/trans_table
From : To
: 100000 250000 500000 667000 1000000 1200000 1398000 1512000 1608000 1704000 1800000 1908000 100000: 0 1698 130 76 87 0 0 0 1 0 1 199 250000: 1655 0 25 15 357 1 2 0 1 0 0 12 500000: 258 54 0 50102 30 3 1 0 0 0 1 32 667000: 267 151 49708 0 77 3 0 0 0 0 0 11 1000000: 3 5 525 15 0 3 2 0 1 1 0 6 1200000: 0 2 1 2 2 0 3 0 0 0 1 4 1398000: 1 0 1 1 4 0 0 1 1 0 2 2 1512000: 0 0 0 0 0 0 1 0 0 0 0 1 1608000: 1 0 0 1 0 1 0 0 0 0 0 3 1704000: 0 0 0 0 0 1 0 1 0 0 0 1 1800000: 0 0 1 1 0 0 1 0 1 0 0 1 1908000: 8 158 90 4 3 3 3 0 1 2 0 0
Board boots in under 4 seconds, Kodi home-screen in about 7 seconds. I haven’t seen the N2 rise over 44ºC.
I’ve also tested some S922X box devices (moving the change to meson-g12b-s922x.dtsi) and no obvious issues.
Quoted 37 lines
---
.../boot/dts/amlogic/meson-g12b-odroid-n2.dts| 19 +++++++++++++++++++1 file changed, 19 insertions(+)arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts +19
-0@@ -260,6 +260,25 @@ }; }; }; + + cpu_opp_table_0: opp-table-0 { + opp-1992000000 { + opp-hz = /bits/ 64 <1992000000>; + opp-microvolt = <1001000>; + }; + }; + + cpub_opp_table_1: opp-table-1 { + opp-1800000000 { + opp-hz = /bits/ 64 <1800000000>; + opp-microvolt = <981000>; + }; + + opp-1908000000 { + opp-hz = /bits/ 64 <1908000000>; + opp-microvolt = <1022000>; + }; + }; }; &arb {Signature · 1 line
2.17.1
Hi,
Could you add "[PATCH vX]" in the subject ?
Quoted 84 lines · Christian Hewitt
Quoted 10 lines · Tim Lewis
Odroid N2 has a large heatsink and HardKernel supports overclock through the addition to extra opp points in their official kernel sources [1]. Add these to the N2 dts only, as other S922X devices may not have suitable heatsinks.
[1] https://github.com/hardkernel/linux/commit/f86cd9487c7483b2a05f448b9ebacf6bd5a2ad2f
Signed-off-by Tim Lewis <[email protected]>Kodi is not a demanding workload, but the extra opp points are being used:
N2:~ # cat
/sys/devices/system/cpu/cpufreq/policy0/stats/trans_table
From : To: 100000 250000 500000 667000 1000000 1200000 1398000 1512000 1608000 1704000 1896000 1992000 100000: 0 20465 294 81 47 0 1 0 0 0 0 183 250000: 20388 0 161 52 59 0 0 0 1 0 1 169 500000: 199 256 0 9 47 1 2 0 0 0 0 57 667000: 177 50 10 0 284 1 1 0 0 0 0 136 1000000: 230 12 15 284 0 1 2 0 0 0 0 285 1200000: 0 0 0 1 0 0 0 0 0 1 0 2 1398000: 1 1 0 2 0 0 0 0 1 1 0 3 1512000: 0 0 0 0 0 0 0 0 0 1 0 2 1608000: 0 0 0 0 0 0 0 1 0 0 0 2 1704000: 0 1 0 0 0 0 1 0 0 0 0 2 1896000: 0 0 1 0 0 0 0 0 0 0 0 1 1992000: 76 47 90 230 392 0 2 2 1 1 1 0N2:~ # cat
/sys/devices/system/cpu/cpufreq/policy2/stats/trans_table
From : To: 100000 250000 500000 667000 1000000 1200000 1398000 1512000 1608000 1704000 1800000 1908000 100000: 0 1698 130 76 87 0 0 0 1 0 1 199 250000: 1655 0 25 15 357 1 2 0 1 0 0 12 500000: 258 54 0 50102 30 3 1 0 0 0 1 32 667000: 267 151 49708 0 77 3 0 0 0 0 0 11 1000000: 3 5 525 15 0 3 2 0 1 1 0 6 1200000: 0 2 1 2 2 0 3 0 0 0 1 4 1398000: 1 0 1 1 4 0 0 1 1 0 2 2 1512000: 0 0 0 0 0 0 1 0 0 0 0 1 1608000: 1 0 0 1 0 1 0 0 0 0 0 3 1704000: 0 0 0 0 0 1 0 1 0 0 0 1 1800000: 0 0 1 1 0 0 1 0 1 0 0 1 1908000: 8 158 90 4 3 3 3 0 1 2 0 0Board boots in under 4 seconds, Kodi home-screen in about 7 seconds. I haven’t seen the N2 rise over 44ºC.
I’ve also tested some S922X box devices (moving the change to
meson-g12b-s922x.dtsi) and no obvious issues.Tested-by Christian Hewitt <[email protected]>Quoted 33 lines
---
.../boot/dts/amlogic/meson-g12b-odroid-n2.dts| 19 +++++++++++++++++++1 file changed, 19 insertions(+)arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts +19
-0@@ -260,6 +260,25 @@ }; }; }; + + cpu_opp_table_0: opp-table-0 { + opp-1992000000 { + opp-hz = /bits/ 64 <1992000000>; + opp-microvolt = <1001000>; + }; + }; + + cpub_opp_table_1: opp-table-1 { + opp-1800000000 { + opp-hz = /bits/ 64 <1800000000>; + opp-microvolt = <981000>; + }; + + opp-1908000000 { + opp-hz = /bits/ 64 <1908000000>; + opp-microvolt = <1022000>; + }; + }; };
Quoted 5 lines
Quoted 4 lines
arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts +0
-0&arb {Signature · 1 line
2.17.1
I think it could be moved to all s922x devices since we have dvfs and thermal management enabled by default, so other devices with inferior cooling will use lower OPPs automatically.
Neil