This is a respin of the initial version posted at [1] (the cover letter describes the rational for doing this). Jon, Thierry: I haven't applied your TB tags as the series has changed significantly. Please let me know if they are still valid. If everybody is OK with this, I'll stick it in irq/irqchip-next. * From v1: - Moved the hierarchy trimming part to its own patch, living in irqdomain.c - Reduced the PMC irqchip patch to the bare minimal in order to reduce the risk of merge conflicts [1] https://lore.kernel.org/r/20201005111443.1390096-1-maz@xxxxxxxxxx Marc Zyngier (4): genirq/irqdomain: Allow partial trimming of irq_data hierarchy gpio: tegra186: Allow optional irq parent callbacks soc/tegra: pmc: Allow optional irq parent callbacks soc/tegra: pmc: Don't create fake interrupt hierarchy levels drivers/gpio/gpio-tegra186.c | 15 +++++- drivers/soc/tegra/pmc.c | 89 +++++++++++++++--------------------- include/linux/irqdomain.h | 3 ++ kernel/irq/irqdomain.c | 56 +++++++++++++++++++++-- 4 files changed, 103 insertions(+), 60 deletions(-) -- 2.28.0