[PATCH] arm64: dts: hisilicon: Add missing clocks property for CPUs

[PATCH] arm64: dts: hisilicon: Add missing clocks property for CPUs

[Viresh Kumar]

The clocks property should either be present for all the CPUs of a
cluster or none. If these are present only for a subset of CPUs of a
cluster then things will start falling apart as soon as the CPUs are
brought online in a different order. For example, this will happen
because the operating system looks for such properties in the CPU node
it is trying to bring up, so that it can register a cooling device.

Add missing clocks property.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
index 919d36b91bf3..aec9e371c2a7 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
+++ b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
@@ -99,6 +99,7 @@
 			reg = <0x0 0x1>;
 			enable-method = "psci";
 			next-level-cache = <&CLUSTER0_L2>;
+			clocks = <&stub_clock 0>;
 			operating-points-v2 = <&cpu_opp_table>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
 			#cooling-cells = <2>; /* min followed by max */
@@ -111,6 +112,7 @@
 			reg = <0x0 0x2>;
 			enable-method = "psci";
 			next-level-cache = <&CLUSTER0_L2>;
+			clocks = <&stub_clock 0>;
 			operating-points-v2 = <&cpu_opp_table>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
 			#cooling-cells = <2>; /* min followed by max */
@@ -123,6 +125,7 @@
 			reg = <0x0 0x3>;
 			enable-method = "psci";
 			next-level-cache = <&CLUSTER0_L2>;
+			clocks = <&stub_clock 0>;
 			operating-points-v2 = <&cpu_opp_table>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
 			#cooling-cells = <2>; /* min followed by max */
@@ -135,6 +138,7 @@
 			reg = <0x0 0x100>;
 			enable-method = "psci";
 			next-level-cache = <&CLUSTER1_L2>;
+			clocks = <&stub_clock 0>;
 			operating-points-v2 = <&cpu_opp_table>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
 			#cooling-cells = <2>; /* min followed by max */
@@ -147,6 +151,7 @@
 			reg = <0x0 0x101>;
 			enable-method = "psci";
 			next-level-cache = <&CLUSTER1_L2>;
+			clocks = <&stub_clock 0>;
 			operating-points-v2 = <&cpu_opp_table>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
 			#cooling-cells = <2>; /* min followed by max */
@@ -159,6 +164,7 @@
 			reg = <0x0 0x102>;
 			enable-method = "psci";
 			next-level-cache = <&CLUSTER1_L2>;
+			clocks = <&stub_clock 0>;
 			operating-points-v2 = <&cpu_opp_table>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
 			#cooling-cells = <2>; /* min followed by max */
@@ -171,6 +177,7 @@
 			reg = <0x0 0x103>;
 			enable-method = "psci";
 			next-level-cache = <&CLUSTER1_L2>;
+			clocks = <&stub_clock 0>;
 			operating-points-v2 = <&cpu_opp_table>;
 			cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
 			#cooling-cells = <2>; /* min followed by max */
-- 
2.18.0.rc1.242.g61856ae69a2c

Re: [PATCH] arm64: dts: hisilicon: Add missing clocks property for CPUs

[Viresh Kumar]

On 23-07-18, 08:36, Viresh Kumar wrote:
> The clocks property should either be present for all the CPUs of a
> cluster or none. If these are present only for a subset of CPUs of a
> cluster then things will start falling apart as soon as the CPUs are
> brought online in a different order. For example, this will happen
> because the operating system looks for such properties in the CPU node
> it is trying to bring up, so that it can register a cooling device.
> 
> Add missing clocks property.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
> ---
>  arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 7 +++++++
>  1 file changed, 7 insertions(+)

@Wei: Can you please apply this one as well ?

-- 
viresh

Re: [PATCH] arm64: dts: hisilicon: Add missing clocks property for CPUs

[Wei Xu]

Hi Viresh,

On 2018/7/31 8:24, Viresh Kumar wrote:
> On 23-07-18, 08:36, Viresh Kumar wrote:
>> The clocks property should either be present for all the CPUs of a
>> cluster or none. If these are present only for a subset of CPUs of a
>> cluster then things will start falling apart as soon as the CPUs are
>> brought online in a different order. For example, this will happen
>> because the operating system looks for such properties in the CPU node
>> it is trying to bring up, so that it can register a cooling device.
>>
>> Add missing clocks property.
>>
>> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
>> ---
>>  arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 7 +++++++
>>  1 file changed, 7 insertions(+)
> 
> @Wei: Can you please apply this one as well ?

Sorry for the late reply!
I will apply it after 4.19-rc1 released.
Thanks!

Best Regards,
Wei