From 0b73355ba26d51ccc23bde2a0e4f32e728672090 Mon Sep 17 00:00:00 2001 From: Patrick Delaunay Date: Mon, 6 Jul 2020 14:48:58 +0200 Subject: [PATCH] ARM: dts: stm32: add reset support to uart nodes on stm32mp15x 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 Reviewed-by: Patrice Chotard --- 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 42e2e2e..7ec90fe 100644 --- a/arch/arm/dts/stm32mp15-u-boot.dtsi +++ b/arch/arm/dts/stm32mp15-u-boot.dtsi @@ -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"; }; -- 2.7.4