diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/irqchip/irq-versatile-fpga.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-versatile-fpga.c b/drivers/irqchip/irq-versatile-fpga.c index 8e0bb566bfaa..ccf58548b161 100644 --- a/drivers/irqchip/irq-versatile-fpga.c +++ b/drivers/irqchip/irq-versatile-fpga.c @@ -28,6 +28,8 @@ #define FIQ_ENABLE_SET 0x28 #define FIQ_ENABLE_CLEAR 0x2C +#define PIC_ENABLES 0x20 /* set interrupt pass through bits */ + /** * struct fpga_irq_data - irq data container for the FPGA IRQ controller * @base: memory offset in virtual memory @@ -213,7 +215,16 @@ int __init fpga_irq_of_init(struct device_node *node, writel(clear_mask, base + IRQ_ENABLE_CLEAR); writel(clear_mask, base + FIQ_ENABLE_CLEAR); + /* + * On Versatile AB/PB, some secondary interrupts have a direct + * pass-thru to the primary controller for IRQs 20 and 22-31 which need + * to be enabled. See section 3.10 of the Versatile AB user guide. + */ + if (of_device_is_compatible(node, "arm,versatile-sic")) + writel(0xffd00000, base + PIC_ENABLES); + return 0; } IRQCHIP_DECLARE(arm_fpga, "arm,versatile-fpga-irq", fpga_irq_of_init); +IRQCHIP_DECLARE(arm_fpga_sic, "arm,versatile-sic", fpga_irq_of_init); #endif |