From: Lorenzo Pieralisi <[email protected]> commit 7925e89f54fc49bcd1e73f0a65c4a3eb35b9cfb1 upstream.
Commit 1ba9bf0 (ARM: 7762/1: kernel: fix arm_dt_init_cpu_maps() to skip non-cpu nodes) goes into v3.10 with leaving the dts cpu node update to the next release (v3.11). This unfortunately causes a regression on multi-core system, e.g. i.MX6 Quad, that is only one cpu core will be brought up by kernel. CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 Setting up static identity map for 0x80538c18 - 0x80538c88 Brought up 1 CPUs SMP: Total of 1 processors activated (1581.05 BogoMIPS). Fix the regression by applying the necessary dts updates. Signed-off-by: Lorenzo Pieralisi <[email protected]> Signed-off-by: Shawn Guo <[email protected]> --- Greg, This is a fix for 3.10 stable kernel. This is my first time to forward a patch that is already on mainline to stable kernel. Please let me know the correct process if what I'm doing here is wrong. Shawn arch/arm/boot/dts/imx23.dtsi | 8 ++++++-- arch/arm/boot/dts/imx28.dtsi | 8 ++++++-- arch/arm/boot/dts/imx6dl.dtsi | 2 ++ arch/arm/boot/dts/imx6q.dtsi | 4 ++++ 4 files changed, 18 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi index 73fd7d0..587ceef 100644 --- a/arch/arm/boot/dts/imx23.dtsi +++ b/arch/arm/boot/dts/imx23.dtsi @@ -23,8 +23,12 @@ }; cpus { - cpu@0 { - compatible = "arm,arm926ejs"; + #address-cells = <0>; + #size-cells = <0>; + + cpu { + compatible = "arm,arm926ej-s"; + device_type = "cpu"; }; }; diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi index 600f7cb..4c10a19 100644 --- a/arch/arm/boot/dts/imx28.dtsi +++ b/arch/arm/boot/dts/imx28.dtsi @@ -32,8 +32,12 @@ }; cpus { - cpu@0 { - compatible = "arm,arm926ejs"; + #address-cells = <0>; + #size-cells = <0>; + + cpu { + compatible = "arm,arm926ej-s"; + device_type = "cpu"; }; }; diff --git a/arch/arm/boot/dts/imx6dl.dtsi b/arch/arm/boot/dts/imx6dl.dtsi index 5bcdf3a..62dc781 100644 --- a/arch/arm/boot/dts/imx6dl.dtsi +++ b/arch/arm/boot/dts/imx6dl.dtsi @@ -18,12 +18,14 @@ cpu@0 { compatible = "arm,cortex-a9"; + device_type = "cpu"; reg = <0>; next-level-cache = <&L2>; }; cpu@1 { compatible = "arm,cortex-a9"; + device_type = "cpu"; reg = <1>; next-level-cache = <&L2>; }; diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi index 21e6758..dc54a72 100644 --- a/arch/arm/boot/dts/imx6q.dtsi +++ b/arch/arm/boot/dts/imx6q.dtsi @@ -18,6 +18,7 @@ cpu@0 { compatible = "arm,cortex-a9"; + device_type = "cpu"; reg = <0>; next-level-cache = <&L2>; operating-points = < @@ -39,18 +40,21 @@ cpu@1 { compatible = "arm,cortex-a9"; + device_type = "cpu"; reg = <1>; next-level-cache = <&L2>; }; cpu@2 { compatible = "arm,cortex-a9"; + device_type = "cpu"; reg = <2>; next-level-cache = <&L2>; }; cpu@3 { compatible = "arm,cortex-a9"; + device_type = "cpu"; reg = <3>; next-level-cache = <&L2>; }; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
