linux-kernel - [PATCH 10/10] ARM: dts: stm32: add wakeup capability on each usart/uart on stm32mp157c

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Message-ID: <1559638519-6128-11-git-send-email-erwan.leray@st.com>
Date:   Tue, 4 Jun 2019 10:55:19 +0200
From:   Erwan Le Ray <erwan.leray@...com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        "Alexandre Torgue" <alexandre.torgue@...com>,
        Rob Herring <robh+dt@...nel.org>,
        "Mark Rutland" <mark.rutland@....com>
CC:     <linux-serial@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Erwan Le Ray <erwan.leray@...com>,
        "Fabrice Gasnier" <fabrice.gasnier@...com>
Subject: [PATCH 10/10] ARM: dts: stm32: add wakeup capability on each usart/uart on stm32mp157c

- Mark all usart/uart devices as wakeup source.
- Identify all dedicated interrupts with a specific interrupt name (either
 "event" or "wakeup").
- add interrupts-extended wakeup interrupt

Signed-off-by: Erwan Le Ray <erwan.leray@...com>

diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi
index 2afeee6..de5b1bf 100644
--- a/arch/arm/boot/dts/stm32mp157c.dtsi
+++ b/arch/arm/boot/dts/stm32mp157c.dtsi
@@ -395,32 +395,44 @@
 		usart2: serial@...0e000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x4000e000 0x400>;
-			interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "event", "wakeup";
+			interrupts-extended = <&intc GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
+					      <&exti 27 1>;
 			clocks = <&rcc USART2_K>;
+			wakeup-source;
 			status = "disabled";
 		};
 
 		usart3: serial@...0f000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x4000f000 0x400>;
-			interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "event", "wakeup";
+			interrupts-extended = <&intc GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
+					      <&exti 28 1>;
 			clocks = <&rcc USART3_K>;
+			wakeup-source;
 			status = "disabled";
 		};
 
 		uart4: serial@...10000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x40010000 0x400>;
-			interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "event", "wakeup";
+			interrupts-extended = <&intc GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>,
+					      <&exti 30 1>;
 			clocks = <&rcc UART4_K>;
+			wakeup-source;
 			status = "disabled";
 		};
 
 		uart5: serial@...11000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x40011000 0x400>;
-			interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "event", "wakeup";
+			interrupts-extended = <&intc GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>,
+					      <&exti 31 1>;
 			clocks = <&rcc UART5_K>;
+			wakeup-source;
 			status = "disabled";
 		};
 
@@ -512,16 +524,22 @@
 		uart7: serial@...18000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x40018000 0x400>;
-			interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "event", "wakeup";
+			interrupts-extended = <&intc GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>,
+					      <&exti 32 1>;
 			clocks = <&rcc UART7_K>;
+			wakeup-source;
 			status = "disabled";
 		};
 
 		uart8: serial@...19000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x40019000 0x400>;
-			interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "event", "wakeup";
+			interrupts-extended = <&intc GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>,
+					      <&exti 33 1>;
 			clocks = <&rcc UART8_K>;
+			wakeup-source;
 			status = "disabled";
 		};
 
@@ -588,8 +606,11 @@
 		usart6: serial@...03000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x44003000 0x400>;
-			interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "event", "wakeup";
+			interrupts-extended = <&intc GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>,
+					      <&exti 29 1>;
 			clocks = <&rcc USART6_K>;
+			wakeup-source;
 			status = "disabled";
 		};
 
@@ -1201,8 +1222,11 @@
 		usart1: serial@...00000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x5c000000 0x400>;
-			interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "event", "wakeup";
+			interrupts-extended = <&intc GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
+					      <&exti 26 1>;
 			clocks = <&rcc USART1_K>;
+			wakeup-source;
 			status = "disabled";
 		};
 
-- 
1.9.1