Re: [PATCH] arm: mediatek: dts: activate SMP for mt6589
From: Matthias Brugger <matthias.bgg@gmail.com>
Date: 2021-03-30 10:14:08
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linux-devicetree
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 <redacted>
Applied to v5.12-next/dts32 Thanks a lot, hope to see more contribution from you for this platform :) Matthias
quoted hunk ↗ jump to hunk
--- arch/arm/boot/dts/mt6589.dtsi | 1 + 1 file changed, 1 insertion(+)diff --git a/arch/arm/boot/dts/mt6589.dtsib/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";
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