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

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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>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrick Delaunay 2020-07-06 14:48:58 +02:00 committed by Patrice Chotard
parent 7ecbefd3ec
commit 0b73355ba2
1 changed files with 32 additions and 0 deletions
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32
arch/arm/dts/stm32mp15-u-boot.dtsi
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@ -189,6 +189,38 @@
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";
};