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Groups > linux.kernel > #1282445
| From | Ben Gamari <ben@smart-cactus.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 07/12] ARM: dts: Exynos5422: fix OPP tables |
| Date | 2015-12-02 22:40 +0100 |
| Message-ID | <qBni3-4hS-33@gated-at.bofh.it> (permalink) |
| References | <qBn8m-4el-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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 <javier@osg.samsung.com>
Signed-off-by: Ben Gamari <ben@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
--
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[PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Ben Gamari <ben@smart-cactus.org> - 2015-12-02 22:40 +0100
[PATCH 11/12] cpufreq: arm-big-little: clarify frequency units Ben Gamari <ben@smart-cactus.org> - 2015-12-02 22:40 +0100
Re: [PATCH 11/12] cpufreq: arm-big-little: clarify frequency units "Jon Medhurst (Tixy)" <tixy@linaro.org> - 2015-12-03 15:30 +0100
Re: [PATCH 11/12] cpufreq: arm-big-little: clarify frequency units Ben Gamari <ben@smart-cactus.org> - 2015-12-03 15:40 +0100
[PATCH 07/12] ARM: dts: Exynos5422: fix OPP tables Ben Gamari <ben@smart-cactus.org> - 2015-12-02 22:40 +0100
[PATCH 01/12] cpufreq: arm_big_little: add cluster regulator support Ben Gamari <ben@smart-cactus.org> - 2015-12-02 22:40 +0100
Re: [PATCH 01/12] cpufreq: arm_big_little: add cluster regulator support Anand Moon <linux.amoon@gmail.com> - 2015-12-03 05:50 +0100
Re: [PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Viresh Kumar <viresh.kumar@linaro.org> - 2015-12-03 07:10 +0100
Re: [PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Ben Gamari <ben@smart-cactus.org> - 2015-12-03 11:30 +0100
Re: [PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Viresh Kumar <viresh.kumar@linaro.org> - 2015-12-03 11:40 +0100
Re: [PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Viresh Kumar <viresh.kumar@linaro.org> - 2015-12-03 12:30 +0100
Re: [PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Ben Gamari <ben@smart-cactus.org> - 2015-12-03 12:30 +0100
Re: [PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Ben Gamari <ben@smart-cactus.org> - 2015-12-07 22:20 +0100
Re: [PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Sudeep Holla <sudeep.holla@arm.com> - 2015-12-03 12:10 +0100
Re: [PATCH v5 0/12] cpufreq: Add support for Exynos 5800, 5420, and 5422 Viresh Kumar <viresh.kumar@linaro.org> - 2015-12-03 12:30 +0100
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