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