diff mbox

[v6,5/5] arm: dts: stm32: remove useless clocksource nodes

Message ID 1508331506-23782-6-git-send-email-benjamin.gaignard@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Benjamin Gaignard Oct. 18, 2017, 12:58 p.m. UTC 
16 bits timers aren't accurate enough to be used as
clocksource, remove them from stm32f4 and stm32f7 devicetree.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
---
 arch/arm/boot/dts/stm32f429.dtsi | 32 --------------------------------
 arch/arm/boot/dts/stm32f746.dtsi | 32 --------------------------------
 2 files changed, 64 deletions(-)

Comments

Rob Herring Oct. 18, 2017, 1:21 p.m. UTC | #1 
On Wed, Oct 18, 2017 at 7:58 AM, Benjamin Gaignard
<benjamin.gaignard@linaro.org> wrote:
> 16 bits timers aren't accurate enough to be used as
> clocksource, remove them from stm32f4 and stm32f7 devicetree.

They aren't useful for anything? Zephyr? u-boot?

Rob
Benjamin Gaignard Oct. 18, 2017, 1:38 p.m. UTC | #2 
2017-10-18 15:21 GMT+02:00 Rob Herring <robh@kernel.org>:
> On Wed, Oct 18, 2017 at 7:58 AM, Benjamin Gaignard
> <benjamin.gaignard@linaro.org> wrote:
>> 16 bits timers aren't accurate enough to be used as
>> clocksource, remove them from stm32f4 and stm32f7 devicetree.
>
> They aren't useful for anything? Zephyr? u-boot?

I have check with the teams and timers (either 16 or 32 bits) are not
used by zephyr or u-boot

>
> Rob
diff mbox

Patch

diff --git a/arch/arm/boot/dts/stm32f429.dtsi b/arch/arm/boot/dts/stm32f429.dtsi
index dd7e99b..ac9a3e6 100644
--- a/arch/arm/boot/dts/stm32f429.dtsi
+++ b/arch/arm/boot/dts/stm32f429.dtsi
@@ -108,14 +108,6 @@ 
 			};
 		};
 
-		timer3: timer@40000400 {
-			compatible = "st,stm32-timer";
-			reg = <0x40000400 0x400>;
-			interrupts = <29>;
-			clocks = <&rcc 0 STM32F4_APB1_CLOCK(TIM3)>;
-			status = "disabled";
-		};
-
 		timers3: timers@40000400 {
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -137,14 +129,6 @@ 
 			};
 		};
 
-		timer4: timer@40000800 {
-			compatible = "st,stm32-timer";
-			reg = <0x40000800 0x400>;
-			interrupts = <30>;
-			clocks = <&rcc 0 STM32F4_APB1_CLOCK(TIM4)>;
-			status = "disabled";
-		};
-
 		timers4: timers@40000800 {
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -194,14 +178,6 @@ 
 			};
 		};
 
-		timer6: timer@40001000 {
-			compatible = "st,stm32-timer";
-			reg = <0x40001000 0x400>;
-			interrupts = <54>;
-			clocks = <&rcc 0 STM32F4_APB1_CLOCK(TIM6)>;
-			status = "disabled";
-		};
-
 		timers6: timers@40001000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -218,14 +194,6 @@ 
 			};
 		};
 
-		timer7: timer@40001400 {
-			compatible = "st,stm32-timer";
-			reg = <0x40001400 0x400>;
-			interrupts = <55>;
-			clocks = <&rcc 0 STM32F4_APB1_CLOCK(TIM7)>;
-			status = "disabled";
-		};
-
 		timers7: timers@40001400 {
 			#address-cells = <1>;
 			#size-cells = <0>;
diff --git a/arch/arm/boot/dts/stm32f746.dtsi b/arch/arm/boot/dts/stm32f746.dtsi
index 5633860..a9077e6 100644
--- a/arch/arm/boot/dts/stm32f746.dtsi
+++ b/arch/arm/boot/dts/stm32f746.dtsi
@@ -82,22 +82,6 @@ 
 			status = "disabled";
 		};
 
-		timer3: timer@40000400 {
-			compatible = "st,stm32-timer";
-			reg = <0x40000400 0x400>;
-			interrupts = <29>;
-			clocks = <&rcc 0 STM32F7_APB1_CLOCK(TIM3)>;
-			status = "disabled";
-		};
-
-		timer4: timer@40000800 {
-			compatible = "st,stm32-timer";
-			reg = <0x40000800 0x400>;
-			interrupts = <30>;
-			clocks = <&rcc 0 STM32F7_APB1_CLOCK(TIM4)>;
-			status = "disabled";
-		};
-
 		timer5: timer@40000c00 {
 			compatible = "st,stm32-timer";
 			reg = <0x40000c00 0x400>;
@@ -105,22 +89,6 @@ 
 			clocks = <&rcc 0 STM32F7_APB1_CLOCK(TIM5)>;
 		};
 
-		timer6: timer@40001000 {
-			compatible = "st,stm32-timer";
-			reg = <0x40001000 0x400>;
-			interrupts = <54>;
-			clocks = <&rcc 0 STM32F7_APB1_CLOCK(TIM6)>;
-			status = "disabled";
-		};
-
-		timer7: timer@40001400 {
-			compatible = "st,stm32-timer";
-			reg = <0x40001400 0x400>;
-			interrupts = <55>;
-			clocks = <&rcc 0 STM32F7_APB1_CLOCK(TIM7)>;
-			status = "disabled";
-		};
-
 		rtc: rtc@40002800 {
 			compatible = "st,stm32-rtc";
 			reg = <0x40002800 0x400>;