The Exynos 5422 is identical to the 5800 except for the fact that it boots from the A7 cores. Consequently, the core numbering is different: cores 0-3 are A7s whereas 4-7 are A15s.
We can reuse the device tree of the 5800 for the 5422 but we must take care to override the OPP tables and CPU clocks. These are otherwise inherited from the exynos5800 devicetree, which has the CPU clusters reversed compared to the 5422. This results in the A15 cores only reaching 1.4GHz, the maximum rate of the KFC clock. Cc: Javier Martinez Canillas <jav...@osg.samsung.com> Signed-off-by: Ben Gamari <b...@smart-cactus.org> --- arch/arm/boot/dts/exynos5422-cpus.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/exynos5422-cpus.dtsi b/arch/arm/boot/dts/exynos5422-cpus.dtsi index b7f60c8..9a5131d 100644 --- a/arch/arm/boot/dts/exynos5422-cpus.dtsi +++ b/arch/arm/boot/dts/exynos5422-cpus.dtsi @@ -20,8 +20,10 @@ device_type = "cpu"; compatible = "arm,cortex-a7"; reg = <0x100>; + clocks = <&clock CLK_KFC_CLK>; clock-frequency = <1000000000>; cci-control-port = <&cci_control0>; + operating-points-v2 = <&cpu1_opp_table>; }; &cpu1 { @@ -30,6 +32,7 @@ reg = <0x101>; clock-frequency = <1000000000>; cci-control-port = <&cci_control0>; + operating-points-v2 = <&cpu1_opp_table>; }; &cpu2 { @@ -38,6 +41,7 @@ reg = <0x102>; clock-frequency = <1000000000>; cci-control-port = <&cci_control0>; + operating-points-v2 = <&cpu1_opp_table>; }; &cpu3 { @@ -46,14 +50,17 @@ reg = <0x103>; clock-frequency = <1000000000>; cci-control-port = <&cci_control0>; + operating-points-v2 = <&cpu1_opp_table>; }; &cpu4 { device_type = "cpu"; compatible = "arm,cortex-a15"; reg = <0x0>; + clocks = <&clock CLK_ARM_CLK>; clock-frequency = <1800000000>; cci-control-port = <&cci_control1>; + operating-points-v2 = <&cpu0_opp_table>; }; &cpu5 { @@ -62,6 +69,7 @@ reg = <0x1>; clock-frequency = <1800000000>; cci-control-port = <&cci_control1>; + operating-points-v2 = <&cpu0_opp_table>; }; &cpu6 { @@ -70,6 +78,7 @@ reg = <0x2>; clock-frequency = <1800000000>; cci-control-port = <&cci_control1>; + operating-points-v2 = <&cpu0_opp_table>; }; &cpu7 { @@ -78,4 +87,5 @@ reg = <0x3>; clock-frequency = <1800000000>; cci-control-port = <&cci_control1>; + operating-points-v2 = <&cpu0_opp_table>; }; -- 2.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html