IRQ is multiplexing several peripheral IRQs, but there's no way to
properly demultiplex those IRQs.
Use a dumb irq demux chip to achieve this demultiplexing operation.
Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
---
arch/arm/boot/dts/at91sam9260.dtsi | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)
diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi
index dd1313c..debe8d2 100644
--- a/arch/arm/boot/dts/at91sam9260.dtsi
+++ b/arch/arm/boot/dts/at91sam9260.dtsi
@@ -10,7 +10,7 @@
#include "skeleton.dtsi"
#include <dt-bindings/pinctrl/at91.h>
-#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/atmel-aic.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/clock/at91.h>
@@ -89,6 +89,7 @@
atmel,external-irqs = <29 30 31>;
};
+
ramc0: ramc@ffffea00 {
compatible = "atmel,at91sam9260-sdramc";
reg = <0xffffea00 0x200>;
@@ -97,7 +98,7 @@
pmc: pmc@fffffc00 {
compatible = "atmel,at91sam9260-pmc";
reg = <0xfffffc00 0x100>;
- interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ interrupts-extended = <&dumb_irq1_demux AIC_IRQ1_PMC>;
interrupt-controller;
#address-cells = <1>;
#size-cells = <0>;
@@ -364,7 +365,7 @@
pit: timer@fffffd30 {
compatible = "atmel,at91sam9260-pit";
reg = <0xfffffd30 0xf>;
- interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ interrupts-extended = <&dumb_irq1_demux AIC_IRQ1_PIT>;
clocks = <&mck>;
};
@@ -750,7 +751,7 @@
dbgu: serial@fffff200 {
compatible = "atmel,at91sam9260-usart";
reg = <0xfffff200 0x200>;
- interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ interrupts-extended = <&dumb_irq1_demux AIC_IRQ1_DBGU>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_dbgu>;
clocks = <&mck>;
@@ -959,7 +960,7 @@
rtc@fffffd20 {
compatible = "atmel,at91sam9260-rtt";
reg = <0xfffffd20 0x10>;
- interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ interrupts-extended = <&dumb_irq1_demux AIC_IRQ1_RTT>;
clocks = <&clk32k>;
status = "disabled";
};
@@ -967,7 +968,7 @@
watchdog@fffffd40 {
compatible = "atmel,at91sam9260-wdt";
reg = <0xfffffd40 0x10>;
- interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ interrupts-extended = <&dumb_irq1_demux AIC_IRQ1_WATCHDOG>;
atmel,watchdog-type = "hardware";
atmel,reset-type = "all";
atmel,dbg-halt;
@@ -1010,6 +1011,19 @@
};
};
+ dumb_irq1_demux: dumb-irq-demux@1 {
+ compatible = "irqchip-dumb-demux";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ irqs = <(AIC_IRQ_MASK(AIC_IRQ1_PMC) |
+ AIC_IRQ_MASK(AIC_IRQ1_PIT) |
+ AIC_IRQ_MASK(AIC_IRQ1_DBGU) |
+ AIC_IRQ_MASK(AIC_IRQ1_RTT) |
+ AIC_IRQ_MASK(AIC_IRQ1_WATCHDOG) |
+ AIC_IRQ_MASK(AIC_IRQ1_RSTC))>;
+ };
+
i2c@0 {
compatible = "i2c-gpio";
gpios = <&pioA 23 GPIO_ACTIVE_HIGH /* sda */
--
1.9.1
--
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