| Message ID | 20210314023735.052d2d35@pc (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm: mediatek: dts: activate SMP for mt6589 | expand |
On 14/03/2021 00:37, Boris Lysov wrote: > This simple patch activates SMP for mt6589 by adding the missing > "enable-method" property. After applying this patch kernel log > indicates all cores are brought up: > > [ 0.070122] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 > [ 0.071652] Setting up static identity map for 0x80100000 - 0x80100054 > [ 0.072711] rcu: Hierarchical SRCU implementation. > [ 0.073853] smp: Bringing up secondary CPUs ... > [ 0.133675] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 > [ 0.193675] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002 > [ 0.253675] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003 > [ 0.253818] smp: Brought up 1 node, 4 CPUs > [ 0.256930] SMP: Total of 4 processors activated (7982.28 BogoMIPS). > [ 0.257855] CPU: All CPU(s) started in SVC mode. > > Before this change CPU cores 1-3 didn't start and the following lines > were in kernel log: > > [ 0.070126] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 > [ 0.071640] Setting up static identity map for 0x80100000 - 0x80100054 > [ 0.072706] rcu: Hierarchical SRCU implementation. > [ 0.073850] smp: Bringing up secondary CPUs ... > [ 0.076052] smp: Brought up 1 node, 1 CPU > [ 0.076678] SMP: Total of 1 processors activated (2000.48 BogoMIPS). > [ 0.077603] CPU: All CPU(s) started in SVC mode. > > Signed-off-by: Boris Lysov <arzamas-16@mail.ee> Applied to v5.12-next/dts32 Thanks a lot, hope to see more contribution from you for this platform :) Matthias > --- > arch/arm/boot/dts/mt6589.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/boot/dts/mt6589.dtsi > b/arch/arm/boot/dts/mt6589.dtsi index f3ccb70c0779..70df00a7bb26 100644 > --- a/arch/arm/boot/dts/mt6589.dtsi > +++ b/arch/arm/boot/dts/mt6589.dtsi > @@ -17,6 +17,7 @@ > cpus { > #address-cells = <1>; > #size-cells = <0>; > + enable-method = "mediatek,mt6589-smp"; > > cpu@0 { > device_type = "cpu"; >
diff --git a/arch/arm/boot/dts/mt6589.dtsi b/arch/arm/boot/dts/mt6589.dtsi index f3ccb70c0779..70df00a7bb26 100644 --- a/arch/arm/boot/dts/mt6589.dtsi +++ b/arch/arm/boot/dts/mt6589.dtsi @@ -17,6 +17,7 @@ cpus { #address-cells = <1>; #size-cells = <0>; + enable-method = "mediatek,mt6589-smp"; cpu@0 { device_type = "cpu";
This simple patch activates SMP for mt6589 by adding the missing "enable-method" property. After applying this patch kernel log indicates all cores are brought up: [ 0.070122] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.071652] Setting up static identity map for 0x80100000 - 0x80100054 [ 0.072711] rcu: Hierarchical SRCU implementation. [ 0.073853] smp: Bringing up secondary CPUs ... [ 0.133675] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 [ 0.193675] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002 [ 0.253675] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003 [ 0.253818] smp: Brought up 1 node, 4 CPUs [ 0.256930] SMP: Total of 4 processors activated (7982.28 BogoMIPS). [ 0.257855] CPU: All CPU(s) started in SVC mode. Before this change CPU cores 1-3 didn't start and the following lines were in kernel log: [ 0.070126] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.071640] Setting up static identity map for 0x80100000 - 0x80100054 [ 0.072706] rcu: Hierarchical SRCU implementation. [ 0.073850] smp: Bringing up secondary CPUs ... [ 0.076052] smp: Brought up 1 node, 1 CPU [ 0.076678] SMP: Total of 1 processors activated (2000.48 BogoMIPS). [ 0.077603] CPU: All CPU(s) started in SVC mode. Signed-off-by: Boris Lysov <arzamas-16@mail.ee> --- arch/arm/boot/dts/mt6589.dtsi | 1 + 1 file changed, 1 insertion(+)