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The IrqSteer module redirects/steers the incoming interrupts to output interrupts of a selected/designated channel as specified by a set of configuration registers. NXP i.MX8x chips integrate IrqSteer controller for some DSC to share irq line for all modules in the subsystem which can reduce the IRQ lines connected to the parent interrupt controller GIC, so IrqSteer irqchip acts as the second irq domain in the system. Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.