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author | Fabrice Gasnier <fabrice.gasnier@foss.st.com> | 2022-02-09 13:48:49 +0300 |
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committer | Alexandre Torgue <alexandre.torgue@foss.st.com> | 2022-02-25 12:53:15 +0300 |
commit | b814f7544a8f669c8c64abccb3e384dbd868a0aa (patch) | |
tree | 64712693f76d3dcbeed1d4feeeeb76ff25433ea1 | |
parent | e6bc0d6ac6d69d3d9a7d43bce37ed4104542ba3c (diff) | |
download | linux-b814f7544a8f669c8c64abccb3e384dbd868a0aa.tar.xz |
ARM: dts: stm32: remove timer5 duplicate unit-address on stm32f7 series
Remove the following warnings seen when building with W=1.
Warning (unique_unit_address): /soc/timer@40000c00: duplicate unit-address
(also used in node /soc/timers@40000c00)
This approach is based on some discussions[1], to restructure the dtsi
and dts files.
Timer5 is enabled by default on stm32f7 series, to act as clockevent. In
order to get rid of the W=1 warning, and be compliant with dt-schemas
(e.g. dtbs_check):
- In stm32f746.dtsi:
. Keep the more complete timers5 description
. Remove the most simple timer5 node that is duplicate
- In each board:
. adopt "st,stm32-timer" compatible for timers5, also add the interrupt
. use /delete-property/ and /delete-node/ so the it matches the
clockevent bindings
Note: all this is done in one shot (e.g. not split) to keep clockevent
functionality.
[1] https://lore.kernel.org/linux-arm-kernel/Yaf4jiZIp8+ndaXs@robh.at.kernel.org/
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
-rw-r--r-- | arch/arm/boot/dts/stm32746g-eval.dts | 12 | ||||
-rw-r--r-- | arch/arm/boot/dts/stm32f746-disco.dts | 12 | ||||
-rw-r--r-- | arch/arm/boot/dts/stm32f746.dtsi | 7 | ||||
-rw-r--r-- | arch/arm/boot/dts/stm32f769-disco.dts | 12 |
4 files changed, 36 insertions, 7 deletions
diff --git a/arch/arm/boot/dts/stm32746g-eval.dts b/arch/arm/boot/dts/stm32746g-eval.dts index 327613fd9666..a293e65141c6 100644 --- a/arch/arm/boot/dts/stm32746g-eval.dts +++ b/arch/arm/boot/dts/stm32746g-eval.dts @@ -194,6 +194,18 @@ bus-width = <4>; }; +&timers5 { + /* Override timer5 to act as clockevent */ + compatible = "st,stm32-timer"; + interrupts = <50>; + status = "okay"; + /delete-property/#address-cells; + /delete-property/#size-cells; + /delete-property/clock-names; + /delete-node/pwm; + /delete-node/timer@4; +}; + &usart1 { pinctrl-0 = <&usart1_pins_a>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/stm32f746-disco.dts b/arch/arm/boot/dts/stm32f746-disco.dts index 569d23cc61e5..c11616ed5fc6 100644 --- a/arch/arm/boot/dts/stm32f746-disco.dts +++ b/arch/arm/boot/dts/stm32f746-disco.dts @@ -109,6 +109,18 @@ bus-width = <4>; }; +&timers5 { + /* Override timer5 to act as clockevent */ + compatible = "st,stm32-timer"; + interrupts = <50>; + status = "okay"; + /delete-property/#address-cells; + /delete-property/#size-cells; + /delete-property/clock-names; + /delete-node/pwm; + /delete-node/timer@4; +}; + &usart1 { pinctrl-0 = <&usart1_pins_b>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/stm32f746.dtsi b/arch/arm/boot/dts/stm32f746.dtsi index a4f5c6a66e08..dc868e6da40e 100644 --- a/arch/arm/boot/dts/stm32f746.dtsi +++ b/arch/arm/boot/dts/stm32f746.dtsi @@ -141,13 +141,6 @@ }; }; - timer5: timer@40000c00 { - compatible = "st,stm32-timer"; - reg = <0x40000c00 0x400>; - interrupts = <50>; - clocks = <&rcc 0 STM32F7_APB1_CLOCK(TIM5)>; - }; - timers5: timers@40000c00 { #address-cells = <1>; #size-cells = <0>; diff --git a/arch/arm/boot/dts/stm32f769-disco.dts b/arch/arm/boot/dts/stm32f769-disco.dts index be943b701980..b038d0ed39e8 100644 --- a/arch/arm/boot/dts/stm32f769-disco.dts +++ b/arch/arm/boot/dts/stm32f769-disco.dts @@ -137,6 +137,18 @@ bus-width = <4>; }; +&timers5 { + /* Override timer5 to act as clockevent */ + compatible = "st,stm32-timer"; + interrupts = <50>; + status = "okay"; + /delete-property/#address-cells; + /delete-property/#size-cells; + /delete-property/clock-names; + /delete-node/pwm; + /delete-node/timer@4; +}; + &usart1 { pinctrl-0 = <&usart1_pins_a>; pinctrl-names = "default"; |