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@st-md-mailman.stormreply.com https://st-md-mailman.stormreply.com/mailman/listinfo/uboot-stm32

Applied to u-boot-stm/master

Thanks

Patrice