[PATCH 14/20] dt-bindings: serial: document option wake-up interrupt for STM32 USART
From: robh@kernel.org (Rob Herring)
Date: 2017-06-28 18:10:21
Also in:
linux-devicetree, linux-serial, lkml
On Mon, Jun 26, 2017 at 12:49:15PM +0000, Bich HEMON wrote:
quoted hunk ↗ jump to hunk
From: Bich Hemon <redacted> Introduce new compatibles for "st,stm32h7-usart" and "st,stm32h7-uart". This new compatible allow to use optional wake-up interrupt. Signed-off-by: Fabrice Gasnier <redacted> --- .../devicetree/bindings/serial/st,stm32-usart.txt | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-)diff --git a/Documentation/devicetree/bindings/serial/st,stm32-usart.txt b/Documentation/devicetree/bindings/serial/st,stm32-usart.txt index a229b14..3b42138 100644 --- a/Documentation/devicetree/bindings/serial/st,stm32-usart.txt +++ b/Documentation/devicetree/bindings/serial/st,stm32-usart.txt@@ -2,11 +2,14 @@ Required properties: - compatible: Can be either "st,stm32-usart", "st,stm32-uart", -"st,stm32f7-usart" or "st,stm32f7-uart" depending on whether -the device supports synchronous mode and is compatible with -stm32(f4) or stm32f7. +"st,stm32f7-usart", "st,stm32f7-uart", "st,stm32h7-usart" or +st,stm32h7-uart depending on whether the device supports synchronous +mode and is compatible with stm32(f4), stm32f7 or stm32h7.
Please reformat as 1 valid set of compatibles per line.
- reg: The address and length of the peripheral registers space -- interrupts: The interrupt line of the USART instance +- interrupts or interrupts-extended: Must contain first, the interrupt + line specifier for the USART instance. An optional wake-up interrupt + specifier can be added. Then, -extended variant may be needed to specify + interrupts parent controllers.
Just describe the interrupts property and what the interrupts are. interrupts-extended is implied if it is necessary.
quoted hunk ↗ jump to hunk
- clocks: The input clock of the USART instance Optional properties:@@ -53,3 +56,12 @@ usart1: serial at 40011000 { <&dma2 7 4 0x414 0x0>; dma-names = "rx", "tx"; }; + +uart4: serial at 40010000 { + compatible = "st,stm32h7-uart"; + reg = <0x40010000 0x400>; + interrupts-extended = <&intc GIC_SPI 52 IRQ_TYPE_NONE>, + <&aiec 30 1>; + clocks = <&rcc UART4_K>; + status = "disabled"; +};-- 1.9.1