[PATCH] ARM: dts: stm32: add reset support to uart nodes on stm32mp15x

[PATCH] ARM: dts: stm32: add reset support to uart nodes on stm32mp15x

[Patrick Delaunay]

STM32 serial IP can be reset via reset controller.
Add the support of reset to uart nodes on stm32mp15-u-boot.dtsi,
the ad-dons file for U-Boot.

This patch fix issues when previous UART configuration, for example
done in TF-A or ROM code, is not handled in U-Boot stm32 serial driver
init.

This reset property won't be not added in Linux kernel device tree
as this reset is not used in Linux STM32 serial driver.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
---

 arch/arm/dts/stm32mp15-u-boot.dtsi | 32 ++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm/dts/stm32mp15-u-boot.dtsi b/arch/arm/dts/stm32mp15-u-boot.dtsi
index 142ad25c43..c463b49dda 100644
--- a/arch/arm/dts/stm32mp15-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15-u-boot.dtsi
@@ -179,6 +179,38 @@
 	compatible = "st,stm32-sdmmc2", "arm,pl18x", "arm,primecell";
 };
 
+&usart1 {
+	resets = <&rcc USART1_R>;
+};
+
+&usart2 {
+	resets = <&rcc USART2_R>;
+};
+
+&usart3 {
+	resets = <&rcc USART3_R>;
+};
+
+&uart4 {
+	resets = <&rcc UART4_R>;
+};
+
+&uart5 {
+	resets = <&rcc UART5_R>;
+};
+
+&usart6 {
+	resets = <&rcc USART6_R>;
+};
+
+&uart7 {
+	resets = <&rcc UART7_R>;
+};
+
+&uart8{
+	resets = <&rcc UART8_R>;
+};
+
 &usbotg_hs {
 	compatible = "st,stm32mp1-hsotg", "snps,dwc2";
 };
-- 
2.17.1

[Uboot-stm32] [PATCH] ARM: dts: stm32: add reset support to uart nodes on stm32mp15x

[Patrice CHOTARD]

On 7/6/20 2:48 PM, Patrick Delaunay wrote:
> STM32 serial IP can be reset via reset controller.
> Add the support of reset to uart nodes on stm32mp15-u-boot.dtsi,
> the ad-dons file for U-Boot.
>
> This patch fix issues when previous UART configuration, for example
> done in TF-A or ROM code, is not handled in U-Boot stm32 serial driver
> init.
>
> This reset property won't be not added in Linux kernel device tree
> as this reset is not used in Linux STM32 serial driver.
>
> Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
> ---
>
>  arch/arm/dts/stm32mp15-u-boot.dtsi | 32 ++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>
> diff --git a/arch/arm/dts/stm32mp15-u-boot.dtsi b/arch/arm/dts/stm32mp15-u-boot.dtsi
> index 142ad25c43..c463b49dda 100644
> --- a/arch/arm/dts/stm32mp15-u-boot.dtsi
> +++ b/arch/arm/dts/stm32mp15-u-boot.dtsi
> @@ -179,6 +179,38 @@
>  	compatible = "st,stm32-sdmmc2", "arm,pl18x", "arm,primecell";
>  };
>  
> +&usart1 {
> +	resets = <&rcc USART1_R>;
> +};
> +
> +&usart2 {
> +	resets = <&rcc USART2_R>;
> +};
> +
> +&usart3 {
> +	resets = <&rcc USART3_R>;
> +};
> +
> +&uart4 {
> +	resets = <&rcc UART4_R>;
> +};
> +
> +&uart5 {
> +	resets = <&rcc UART5_R>;
> +};
> +
> +&usart6 {
> +	resets = <&rcc USART6_R>;
> +};
> +
> +&uart7 {
> +	resets = <&rcc UART7_R>;
> +};
> +
> +&uart8{
> +	resets = <&rcc UART8_R>;
> +};
> +
>  &usbotg_hs {
>  	compatible = "st,stm32mp1-hsotg", "snps,dwc2";
>  };

Reviewed-by: Patrice Chotard <patrice.chotard@st.com>

Thanks

Patrice

[Uboot-stm32] [PATCH] ARM: dts: stm32: add reset support to uart nodes on stm32mp15x

[Patrice CHOTARD]

On 7/28/20 4:12 PM, Patrice CHOTARD wrote:
> On 7/6/20 2:48 PM, Patrick Delaunay wrote:
>> STM32 serial IP can be reset via reset controller.
>> Add the support of reset to uart nodes on stm32mp15-u-boot.dtsi,
>> the ad-dons file for U-Boot.
>>
>> This patch fix issues when previous UART configuration, for example
>> done in TF-A or ROM code, is not handled in U-Boot stm32 serial driver
>> init.
>>
>> This reset property won't be not added in Linux kernel device tree
>> as this reset is not used in Linux STM32 serial driver.
>>
>> Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
>> ---
>>
>>  arch/arm/dts/stm32mp15-u-boot.dtsi | 32 ++++++++++++++++++++++++++++++
>>  1 file changed, 32 insertions(+)
>>
>> diff --git a/arch/arm/dts/stm32mp15-u-boot.dtsi b/arch/arm/dts/stm32mp15-u-boot.dtsi
>> index 142ad25c43..c463b49dda 100644
>> --- a/arch/arm/dts/stm32mp15-u-boot.dtsi
>> +++ b/arch/arm/dts/stm32mp15-u-boot.dtsi
>> @@ -179,6 +179,38 @@
>>  	compatible = "st,stm32-sdmmc2", "arm,pl18x", "arm,primecell";
>>  };
>>  
>> +&usart1 {
>> +	resets = <&rcc USART1_R>;
>> +};
>> +
>> +&usart2 {
>> +	resets = <&rcc USART2_R>;
>> +};
>> +
>> +&usart3 {
>> +	resets = <&rcc USART3_R>;
>> +};
>> +
>> +&uart4 {
>> +	resets = <&rcc UART4_R>;
>> +};
>> +
>> +&uart5 {
>> +	resets = <&rcc UART5_R>;
>> +};
>> +
>> +&usart6 {
>> +	resets = <&rcc USART6_R>;
>> +};
>> +
>> +&uart7 {
>> +	resets = <&rcc UART7_R>;
>> +};
>> +
>> +&uart8{
>> +	resets = <&rcc UART8_R>;
>> +};
>> +
>>  &usbotg_hs {
>>  	compatible = "st,stm32mp1-hsotg", "snps,dwc2";
>>  };
> Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
>
> Thanks
>
> Patrice
> _______________________________________________
> Uboot-stm32 mailing list
> Uboot-stm32 at st-md-mailman.stormreply.com
> https://st-md-mailman.stormreply.com/mailman/listinfo/uboot-stm32
Applied to u-boot-stm/master

Thanks

Patrice