PROCESSOR-SDK-AM335X: GPIO interrupt priority

thank you,

96 GPIOINT0A GPIO 0 POINTRPEND1
97 GPIOINT0B GPIO 0 POINTRPEND2

dts:

gpio0: gpio@44e07000 {
compatible = "ti,omap4-gpio";
ti,hwmods = "gpio1";
clocks = <&dpll_core_m4_div2_ck>, <&gpio0_dbclk>;
clock-names = "fck", "dbclk";
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <1>;
reg = <0x44e07000 0x1000>;
interrupts = <96>;
};

I use GPIO_0_19 and GPIO_0_07, and I want to set GPIO_0_19 interrupt priority higher or lower than GPIO_0_07.

Is GPIO0 interrupt priority NTC_ILR96?How can I change the interrupt priority ofGPIO_0_19 and GPIO_0_07 ?

INTC_ILR96 Register (offset = 280h) [reset = 0h]

root@am335x-evm:~# devmem2 0x48200000
/dev/mem opened.
Memory mapped at address 0xb6f08000.
Read at address 0x48200000 (0xb6f08000): 0x00000050

root@am335x-evm:~# devmem2 0x48200280
/dev/mem opened.
Memory mapped at address 0xb6f47000.
Read at address 0x48200280 (0xb6f47280): 0x00000000
root@am335x-evm:~#

Chen,

You need to configure gpio0_7 for GPIOINT0A, and gpio0_19 for GPIOINT0B.

gpio0_7 -> GPIO_IRQSTATUS_SET_0[7] INTLINE = 0x1 -> GPIOINT0A 96

gpio0_19 -> GPIO_IRQSTATUS_SET_1[19] INTLINE = 0x1 -> GPIOINT0B 97

Then you need to configure IRQ number 97 with higher priority than 96.

And gpio0 module in linux-kernel/arch/arm/boot/dts/am33xx.dtsi as below:

- interrupts = <96>;

+ interrupts = <96 97>;

+ interrupt-names = "gpioint0a", "gpioint0b";

};

You can explore how the two McASP0 interrupts are coded, 80 and 81.

Thus gpio0_7 IRQ priority is controlled by INTC_ILR_96, gpio0_19 IRQ priority is controlled by INTC_ILR_97

Regards,
Pavel