Add the atmel,usart-mode property to UART nodes in Microchip SAM9X75 boards' device trees (boards which inherit sam9x7.dtsi). This ensures compliance with the atmel at91-usart.yaml schema and resolves errors that occur during DT validation, such as: arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dtb: serial@200: serial@200' does not match '^spi(@.*|-([0-9]|[1-9][0-9]+))?$' from schema: http://devicetree.org/schemas/serial/atmel,at91-usart.yaml# arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dtb: serial@200: atmel,use-dma-rx: False schema does not allow True from schema: http://devicetree.org/schemas/serial/atmel,at91-usart.yaml# arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dtb: serial@200: atmel,fifo-size: False schema does not allow 16 from schema: http://devicetree.org/schemas/serial/atmel,at91-usart.yaml# By adding "atmel,usart-mode = <AT91_USART_MODE_SERIAL>" to UART nodes 0 up until 12, these errors are resolved, ensuring proper DTB validation. This issue has been tested on the sam9x75 (sam9x75eb & sam9x75_curiosity) boards, both of which inherit the sam9x7.dtsi file. Signed-off-by: Jihed Chaibi <jihed.chaibi.dev@xxxxxxxxx> --- arch/arm/boot/dts/microchip/sam9x7.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm/boot/dts/microchip/sam9x7.dtsi b/arch/arm/boot/dts/microchip/sam9x7.dtsi index 29950159bb94..d3f7238eda85 100644 --- a/arch/arm/boot/dts/microchip/sam9x7.dtsi +++ b/arch/arm/boot/dts/microchip/sam9x7.dtsi @@ -166,6 +166,7 @@ flx4: flexcom@f0000000 { uart4: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <13 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -234,6 +235,7 @@ flx5: flexcom@f0004000 { uart5: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <14 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -375,6 +377,7 @@ flx11: flexcom@f0020000 { uart11: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <32 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -424,6 +427,7 @@ flx12: flexcom@f0024000 { uart12: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <33 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -595,6 +599,7 @@ flx6: flexcom@f8010000 { uart6: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <9 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -644,6 +649,7 @@ flx7: flexcom@f8014000 { uart7: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <10 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -693,6 +699,7 @@ flx8: flexcom@f8018000 { uart8: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <11 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -742,6 +749,7 @@ flx0: flexcom@f801c000 { uart0: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <5 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -810,6 +818,7 @@ flx1: flexcom@f8020000 { uart1: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <6 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -878,6 +887,7 @@ flx2: flexcom@f8024000 { uart2: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <7 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -946,6 +956,7 @@ flx3: flexcom@f8028000 { uart3: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <8 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -1067,6 +1078,7 @@ flx9: flexcom@f8040000 { uart9: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <15 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | @@ -1116,6 +1128,7 @@ flx10: flexcom@f8044000 { uart10: serial@200 { compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart"; reg = <0x200 0x200>; + atmel,usart-mode = <AT91_USART_MODE_SERIAL>; interrupts = <16 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | -- 2.39.2
