The odroid-xu3 board which is based on exynos5422 not exynos5800 is booted from cortex-a7 core unlike exynos5800. The odroid-xu3's cpu order is quite strange. cpu0 and cpu5-7 are cortex-a7 cores and cpu1-4 are cortex-a15 cores. To correct this mis-odering, I added exynos5422-cpus.dtsi and reversing cpu orders from exynos5420. Now, cpu0-3 are cortex-a7 and cpu4-7 are cortex-a15. Reviewed-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx> Signed-off-by: Chanho Park <parkch98@xxxxxxxxx> --- Change from v4: - Resend patch with correct signed-off Changes from v4: - Remove temporal patch in e-mail body Changes from v3: - include this exynos5422-cpus.dtsi in the exynos5422-odroidxu3-common.dtsi Changes from v2: - drop inclusion of exynos5420.dtsi from exynos5422-cpus.dtsi - drop compatibles from exynos5422-cpus.dtsi Changes from v1: - rename exynos5422.dtsi to exynos5422-cpus.dtsi - include the dtsi file top of the exynos5422-odroidxu3.dts Secondary cpu booting problem[1] is not resolved yet. Need more investigations to work booting 8 cores correctly. [1]: http://www.spinics.net/lists/linux-samsung-soc/msg45525.html arch/arm/boot/dts/exynos5422-cpus.dtsi | 81 ++++++++++++++++++++++ arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 1 + 2 files changed, 82 insertions(+) create mode 100644 arch/arm/boot/dts/exynos5422-cpus.dtsi diff --git a/arch/arm/boot/dts/exynos5422-cpus.dtsi b/arch/arm/boot/dts/exynos5422-cpus.dtsi new file mode 100644 index 0000000..b7f60c8 --- /dev/null +++ b/arch/arm/boot/dts/exynos5422-cpus.dtsi @@ -0,0 +1,81 @@ +/* + * SAMSUNG EXYNOS5422 SoC cpu device tree source + * + * Copyright (c) 2015 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * The only difference between EXYNOS5422 and EXYNOS5800 is cpu ordering. The + * EXYNOS5422 is booting from Cortex-A7 core while the EXYNOS5800 is booting + * from Cortex-A15 core. + * + * EXYNOS5422 based board files can include this file to provide cpu ordering + * which could boot a cortex-a7 from cpu0. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +&cpu0 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0x100>; + clock-frequency = <1000000000>; + cci-control-port = <&cci_control0>; +}; + +&cpu1 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0x101>; + clock-frequency = <1000000000>; + cci-control-port = <&cci_control0>; +}; + +&cpu2 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0x102>; + clock-frequency = <1000000000>; + cci-control-port = <&cci_control0>; +}; + +&cpu3 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0x103>; + clock-frequency = <1000000000>; + cci-control-port = <&cci_control0>; +}; + +&cpu4 { + device_type = "cpu"; + compatible = "arm,cortex-a15"; + reg = <0x0>; + clock-frequency = <1800000000>; + cci-control-port = <&cci_control1>; +}; + +&cpu5 { + device_type = "cpu"; + compatible = "arm,cortex-a15"; + reg = <0x1>; + clock-frequency = <1800000000>; + cci-control-port = <&cci_control1>; +}; + +&cpu6 { + device_type = "cpu"; + compatible = "arm,cortex-a15"; + reg = <0x2>; + clock-frequency = <1800000000>; + cci-control-port = <&cci_control1>; +}; + +&cpu7 { + device_type = "cpu"; + compatible = "arm,cortex-a15"; + reg = <0x3>; + clock-frequency = <1800000000>; + cci-control-port = <&cci_control1>; +}; diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi index 8adf455..f603133 100644 --- a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi +++ b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi @@ -15,6 +15,7 @@ #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/sound/samsung-i2s.h> #include "exynos5800.dtsi" +#include "exynos5422-cpus.dtsi" / { memory { -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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