| Lee Jones | f1f5bc3 | 2015-02-18 15:13:59 +0000 | [diff] [blame] | 1 | STMicroelectronics STi System Configuration Controlled IRQs |
| 2 | ----------------------------------------------------------- |
| 3 | |
| 4 | On STi based systems; External, CTI (Core Sight), PMU (Performance Management), |
| 5 | and PL310 L2 Cache IRQs are controlled using System Configuration registers. |
| 6 | This driver is used to unmask them prior to use. |
| 7 | |
| 8 | Required properties: |
| 9 | - compatible : Should be set to one of: |
| 10 | "st,stih415-irq-syscfg" |
| 11 | "st,stih416-irq-syscfg" |
| 12 | "st,stih407-irq-syscfg" |
| 13 | "st,stid127-irq-syscfg" |
| 14 | - st,syscfg : Phandle to Cortex-A9 IRQ system config registers |
| 15 | - st,irq-device : Array of IRQs to enable - should be 2 in length |
| 16 | - st,fiq-device : Array of FIQs to enable - should be 2 in length |
| 17 | |
| 18 | Optional properties: |
| 19 | - st,invert-ext : External IRQs can be inverted at will. This property inverts |
| 20 | these IRQs using bitwise logic. A number of defines have been |
| 21 | provided for convenience: |
| 22 | ST_IRQ_SYSCFG_EXT_1_INV |
| 23 | ST_IRQ_SYSCFG_EXT_2_INV |
| 24 | ST_IRQ_SYSCFG_EXT_3_INV |
| 25 | Example: |
| 26 | |
| 27 | irq-syscfg { |
| 28 | compatible = "st,stih416-irq-syscfg"; |
| 29 | st,syscfg = <&syscfg_cpu>; |
| 30 | st,irq-device = <ST_IRQ_SYSCFG_PMU_0>, |
| 31 | <ST_IRQ_SYSCFG_PMU_1>; |
| 32 | st,fiq-device = <ST_IRQ_SYSCFG_DISABLED>, |
| 33 | <ST_IRQ_SYSCFG_DISABLED>; |
| 34 | st,invert-ext = <(ST_IRQ_SYSCFG_EXT_1_INV | ST_IRQ_SYSCFG_EXT_3_INV)>; |
| 35 | }; |