2020-06-29 19:35:10

by Krzysztof Kozlowski

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Subject: [PATCH 1/3] ARM: dts: exynos: Fix missing empty reg/ranges property regulators on Trats

Remove the simple-bus compatible from a regulators node because its
children do not have any unit addresses. This fixes DTC warning:

Warning (simple_bus_reg): /regulators/regulator-0: missing or empty reg/ranges property

Signed-off-by: Krzysztof Kozlowski <[email protected]>
---
arch/arm/boot/dts/exynos4210-trats.dts | 2 --
1 file changed, 2 deletions(-)

diff --git a/arch/arm/boot/dts/exynos4210-trats.dts b/arch/arm/boot/dts/exynos4210-trats.dts
index 3d791db6095c..cec413ee4490 100644
--- a/arch/arm/boot/dts/exynos4210-trats.dts
+++ b/arch/arm/boot/dts/exynos4210-trats.dts
@@ -31,8 +31,6 @@
};

regulators {
- compatible = "simple-bus";
-
vemmc_reg: regulator-0 {
compatible = "regulator-fixed";
regulator-name = "VMEM_VDD_2.8V";
--
2.17.1


2020-06-29 19:36:26

by Krzysztof Kozlowski

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Subject: [RFT 3/3] arm64: dts: exynos: Add unit address to soc node and move thermal zones on Exynos7

Add @0 unit address to 'soc' node match its 'reg' property and move the
thermal zones out of 'soc' to main root as it this is usually not a
property of a Soc.

This silences DTC warnings:

Warning (unit_address_vs_reg): /soc: node has a reg or ranges property, but no unit name
Warning (simple_bus_reg): /soc/thermal-zones: missing or empty reg/ranges property

Signed-off-by: Krzysztof Kozlowski <[email protected]>

---

Not tested on HW.
---
arch/arm64/boot/dts/exynos/exynos7.dtsi | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
index 300ad7326ea8..f590891efe25 100644
--- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
@@ -83,7 +83,7 @@
method = "smc";
};

- soc: soc {
+ soc: soc@0 {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
@@ -597,15 +597,6 @@
#thermal-sensor-cells = <0>;
};

- thermal-zones {
- atlas_thermal: cluster0-thermal {
- polling-delay-passive = <0>; /* milliseconds */
- polling-delay = <0>; /* milliseconds */
- thermal-sensors = <&tmuctrl_0>;
- #include "exynos7-trip-points.dtsi"
- };
- };
-
ufs: ufs@15570000 {
compatible = "samsung,exynos7-ufs";
reg = <0x15570000 0x100>, /* 0: HCI standard */
@@ -675,6 +666,15 @@
};
};

+ thermal-zones {
+ atlas_thermal: cluster0-thermal {
+ polling-delay-passive = <0>; /* milliseconds */
+ polling-delay = <0>; /* milliseconds */
+ thermal-sensors = <&tmuctrl_0>;
+ #include "exynos7-trip-points.dtsi"
+ };
+ };
+
timer {
compatible = "arm,armv8-timer";
interrupts = <GIC_PPI 13
--
2.17.1

2020-06-29 19:51:03

by Sylwester Nawrocki

[permalink] [raw]
Subject: Re: [PATCH 1/3] ARM: dts: exynos: Fix missing empty reg/ranges property regulators on Trats

Hi Krzysztof,

On 6/29/20 21:33, Krzysztof Kozlowski wrote:
> Remove the simple-bus compatible from a regulators node because its
> children do not have any unit addresses. This fixes DTC warning:
>
> Warning (simple_bus_reg): /regulators/regulator-0: missing or empty reg/ranges property
>
> Signed-off-by: Krzysztof Kozlowski <[email protected]>
> ---
> arch/arm/boot/dts/exynos4210-trats.dts | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/arch/arm/boot/dts/exynos4210-trats.dts b/arch/arm/boot/dts/exynos4210-trats.dts
> index 3d791db6095c..cec413ee4490 100644
> --- a/arch/arm/boot/dts/exynos4210-trats.dts
> +++ b/arch/arm/boot/dts/exynos4210-trats.dts
> @@ -31,8 +31,6 @@
> };
>
> regulators {
> - compatible = "simple-bus";

I think you would also need to remove the 'regulators' node altogether,
otherwise with your change the subnodes below won't get parsed and the
regulators will not get registered.

> vemmc_reg: regulator-0 {
> compatible = "regulator-fixed";
> regulator-name = "VMEM_VDD_2.8V";
>

--
Thanks,
Sylwester

2020-06-29 20:48:37

by Krzysztof Kozlowski

[permalink] [raw]
Subject: Re: [PATCH 1/3] ARM: dts: exynos: Fix missing empty reg/ranges property regulators on Trats

On Mon, Jun 29, 2020 at 09:50:26PM +0200, Sylwester Nawrocki wrote:
> Hi Krzysztof,
>
> On 6/29/20 21:33, Krzysztof Kozlowski wrote:
> > Remove the simple-bus compatible from a regulators node because its
> > children do not have any unit addresses. This fixes DTC warning:
> >
> > Warning (simple_bus_reg): /regulators/regulator-0: missing or empty reg/ranges property
> >
> > Signed-off-by: Krzysztof Kozlowski <[email protected]>
> > ---
> > arch/arm/boot/dts/exynos4210-trats.dts | 2 --
> > 1 file changed, 2 deletions(-)
> >
> > diff --git a/arch/arm/boot/dts/exynos4210-trats.dts b/arch/arm/boot/dts/exynos4210-trats.dts
> > index 3d791db6095c..cec413ee4490 100644
> > --- a/arch/arm/boot/dts/exynos4210-trats.dts
> > +++ b/arch/arm/boot/dts/exynos4210-trats.dts
> > @@ -31,8 +31,6 @@
> > };
> > regulators {
> > - compatible = "simple-bus";
>
> I think you would also need to remove the 'regulators' node altogether,
> otherwise with your change the subnodes below won't get parsed and the
> regulators will not get registered.

Good point, I actually did not test this patch. Let me recheck and send
a follow up.

Thanks for review!

Best regards,
Krzysztof

2020-07-07 06:48:55

by Krzysztof Kozlowski

[permalink] [raw]
Subject: Re: [RFT 3/3] arm64: dts: exynos: Add unit address to soc node and move thermal zones on Exynos7

On Mon, Jun 29, 2020 at 09:33:38PM +0200, Krzysztof Kozlowski wrote:
> Add @0 unit address to 'soc' node match its 'reg' property and move the
> thermal zones out of 'soc' to main root as it this is usually not a
> property of a Soc.
>
> This silences DTC warnings:
>
> Warning (unit_address_vs_reg): /soc: node has a reg or ranges property, but no unit name
> Warning (simple_bus_reg): /soc/thermal-zones: missing or empty reg/ranges property
>
> Signed-off-by: Krzysztof Kozlowski <[email protected]>
>
> ---
>
> Not tested on HW.
> ---
> arch/arm64/boot/dts/exynos/exynos7.dtsi | 20 ++++++++++----------

Applied.

Best regards,
Krzysztof