Thread (4 messages) 4 messages, 4 authors, 2018-06-18

[PATCH] ARM: dts: exynos: Add missing CPU clocks to secondary CPUs on Exynos542x

From: Anand Moon <hidden>
Date: 2018-06-18 11:09:47
Also in: linux-devicetree, linux-samsung-soc, lkml

Hi Krzysztof,


On 30 May 2018 at 22:19, Krzysztof Kozlowski [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Secondary CPUs should have the same information in DeviceTree as booting
CPU from both correctness point of view and for possible hotplug
scenarios.

Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 arch/arm/boot/dts/exynos5420-cpus.dtsi | 6 ++++++
 arch/arm/boot/dts/exynos5422-cpus.dtsi | 8 +++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/exynos5420-cpus.dtsi b/arch/arm/boot/dts/exynos5420-cpus.dtsi
index a8e449471304..0ee6e92a3c29 100644
--- a/arch/arm/boot/dts/exynos5420-cpus.dtsi
+++ b/arch/arm/boot/dts/exynos5420-cpus.dtsi
@@ -38,6 +38,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a15";
                        reg = <0x1>;
+                       clocks = <&clock CLK_ARM_CLK>;
                        clock-frequency = <1800000000>;
                        cci-control-port = <&cci_control1>;
                        operating-points-v2 = <&cluster_a15_opp_table>;
@@ -49,6 +50,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a15";
                        reg = <0x2>;
+                       clocks = <&clock CLK_ARM_CLK>;
                        clock-frequency = <1800000000>;
                        cci-control-port = <&cci_control1>;
                        operating-points-v2 = <&cluster_a15_opp_table>;
@@ -60,6 +62,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a15";
                        reg = <0x3>;
+                       clocks = <&clock CLK_ARM_CLK>;
                        clock-frequency = <1800000000>;
                        cci-control-port = <&cci_control1>;
                        operating-points-v2 = <&cluster_a15_opp_table>;
@@ -83,6 +86,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a7";
                        reg = <0x101>;
+                       clocks = <&clock CLK_KFC_CLK>;
                        clock-frequency = <1000000000>;
                        cci-control-port = <&cci_control0>;
                        operating-points-v2 = <&cluster_a7_opp_table>;
@@ -94,6 +98,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a7";
                        reg = <0x102>;
+                       clocks = <&clock CLK_KFC_CLK>;
                        clock-frequency = <1000000000>;
                        cci-control-port = <&cci_control0>;
                        operating-points-v2 = <&cluster_a7_opp_table>;
@@ -105,6 +110,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a7";
                        reg = <0x103>;
+                       clocks = <&clock CLK_KFC_CLK>;
                        clock-frequency = <1000000000>;
                        cci-control-port = <&cci_control0>;
                        operating-points-v2 = <&cluster_a7_opp_table>;
diff --git a/arch/arm/boot/dts/exynos5422-cpus.dtsi b/arch/arm/boot/dts/exynos5422-cpus.dtsi
index 7c130a00d1a8..e4a5857c135f 100644
--- a/arch/arm/boot/dts/exynos5422-cpus.dtsi
+++ b/arch/arm/boot/dts/exynos5422-cpus.dtsi
@@ -37,6 +37,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a7";
                        reg = <0x101>;
+                       clocks = <&clock CLK_KFC_CLK>;
                        clock-frequency = <1000000000>;
                        cci-control-port = <&cci_control0>;
                        operating-points-v2 = <&cluster_a7_opp_table>;
@@ -48,6 +49,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a7";
                        reg = <0x102>;
+                       clocks = <&clock CLK_KFC_CLK>;
                        clock-frequency = <1000000000>;
                        cci-control-port = <&cci_control0>;
                        operating-points-v2 = <&cluster_a7_opp_table>;
@@ -59,6 +61,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a7";
                        reg = <0x103>;
+                       clocks = <&clock CLK_KFC_CLK>;
                        clock-frequency = <1000000000>;
                        cci-control-port = <&cci_control0>;
                        operating-points-v2 = <&cluster_a7_opp_table>;
@@ -69,8 +72,8 @@
                cpu4: cpu at 0 {
                        device_type = "cpu";
                        compatible = "arm,cortex-a15";
-                       clocks = <&clock CLK_ARM_CLK>;
                        reg = <0x0>;
+                       clocks = <&clock CLK_ARM_CLK>;
                        clock-frequency = <1800000000>;
                        cci-control-port = <&cci_control1>;
                        operating-points-v2 = <&cluster_a15_opp_table>;
@@ -82,6 +85,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a15";
                        reg = <0x1>;
+                       clocks = <&clock CLK_ARM_CLK>;
                        clock-frequency = <1800000000>;
                        cci-control-port = <&cci_control1>;
                        operating-points-v2 = <&cluster_a15_opp_table>;
@@ -93,6 +97,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a15";
                        reg = <0x2>;
+                       clocks = <&clock CLK_ARM_CLK>;
                        clock-frequency = <1800000000>;
                        cci-control-port = <&cci_control1>;
                        operating-points-v2 = <&cluster_a15_opp_table>;
@@ -104,6 +109,7 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a15";
                        reg = <0x3>;
+                       clocks = <&clock CLK_ARM_CLK>;
                        clock-frequency = <1800000000>;
                        cci-control-port = <&cci_control1>;
                        operating-points-v2 = <&cluster_a15_opp_table>;
--
[snip]

Actually cpufreq module have more clock to be enabled below is example
from clk_summary.

    fout_kpll                             0            0  1400000000
       0 0
       mout_kpll                          0            0  1400000000
       0 0
          kfcclk                          0            0  1400000000
       0 0
          sclk_kpll                       0            0   350000000
       0 0
          mout_kfc                        0            0  1400000000
       0 0
             div_kfc                      0            0  1400000000
       0 0

    fout_apll                             0            0  2000000000
       0 0
       mout_apll                          0            0  2000000000
       0 0
          armclk                          0            0  2000000000
       0 0
          sclk_apll                       0            0   500000000
       0 0
          mout_cpu                        0            0  2000000000
       0 0
             div_arm                      0            0  2000000000
       0 0
                armclk2                   0            0  2000000000
       0 0

Best Regards
-Anand
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