Re: [PATCH] arm64: dts: mt8173: Re-measure capacity-dmips-mhz

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On 08/07/2020 20:55, Hsin-Yi Wang wrote:
On Thu, Jul 9, 2020 at 1:01 AM Matthias Brugger <matthias.bgg@xxxxxxxxx> wrote:



On 06/07/2020 10:37, Hsin-Yi Wang wrote:
Re measure capacity-dmips-mhz on elm and hana:

cpu 1:  9502 DMIPS @ 1703 Mhz
cpu 3: 16250 DMIPS @ 2106 Mhz

==> 740 : 1024

I have some trouble to match the commit message to the actual patch. Commit
message talks about cpu 1 but patch changes cpu0. Where are the values of the
other CPUs?

Small cpu on 8173 is cpu0 & cpu1, while big cpu is cpu2 & cpu3.
Small cpu: 9502 DMIPS @ 1703 Mhz
Big cpu:   16250 DMIPS @ 2106 Mhz

9502/1703 : 16250/2106 = 740 : 1024 (scale big cpu to 1024), and this patch
changes the small cpu value to 740.



applied to v5.8-next/dts64

Thanks!





Regards,
Matthias


Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
---
   arch/arm64/boot/dts/mediatek/mt8173.dtsi | 4 ++--
   1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
index 70b1ffcab7f0..5e046f9d48ce 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@ -167,7 +167,7 @@ cpu0: cpu@0 {
                                <&apmixedsys CLK_APMIXED_MAINPLL>;
                       clock-names = "cpu", "intermediate";
                       operating-points-v2 = <&cluster0_opp>;
-                     capacity-dmips-mhz = <526>;
+                     capacity-dmips-mhz = <740>;
               };

               cpu1: cpu@1 {
@@ -182,7 +182,7 @@ cpu1: cpu@1 {
                                <&apmixedsys CLK_APMIXED_MAINPLL>;
                       clock-names = "cpu", "intermediate";
                       operating-points-v2 = <&cluster0_opp>;
-                     capacity-dmips-mhz = <526>;
+                     capacity-dmips-mhz = <740>;
               };

               cpu2: cpu@100 {




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