Devices in the AUX block share a common interrupt line, with a register indicating which devices have active IRQs. Expose this as a nested interrupt controller to avoid IRQ sharing problems (easily observed if UART1 and SPI1/2 are enabled simultaneously). The interrupt functionality could arguably be forked off as a separate irqchip driver, but the clock driver has already claimed the AUX_IRQ register so some driver and DT surgery would still be required. Eric Anholt thought that including it here is reasonable, but I'm prepared to split it out if this is considered too hacky. Phil Elwell (2): clk: bcm2835: Add AUX interrupt controller ARM: dts: bcm283x: Enable AUX interrupt controller arch/arm/boot/dts/bcm283x.dtsi | 12 +++- drivers/clk/bcm/clk-bcm2835-aux.c | 120 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 129 insertions(+), 3 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
