From: Geert Uytterhoeven geert+renesas@glider.be
[ Upstream commit d034f53cc6c5c09a4e10cb9716986f3844c58514 ]
As of commit 9a1091ef0017c40a ("irqchip: gic: Support hierarchy irq domain."), armadillo-legacy hangs during boot with:
sh-tmu.0: ch0: used for clock events sh-tmu.0: ch0: used for periodic clock events sh-tmu.0: ch0: failed to request irq 230 sh-tmu.0: ch1: used as clock source sh-cmt-48.1: ch0: failed to request irq 90 sh-cmt-48.1: ch0: registration failed earlytimer: unable to probe sh-cmt-48 early. Calibrating delay loop...
This happens because the IRQ numbers of the GIC are now virtual, and no longer match the hardcoded hardware IRQ numbers in the platform board code. To fix this, instantiate the GIC from platform board code when compiling a legacy kernel, like is done on sh73a0 for kzm9g-legacy.
Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Acked-by: Marc Zyngier marc.zyngier@arm.com Signed-off-by: Simon Horman horms+renesas@verge.net.au Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/mach-shmobile/setup-r8a7740.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c index 8894e1b7ab0e..6ccdc4574c89 100644 --- a/arch/arm/mach-shmobile/setup-r8a7740.c +++ b/arch/arm/mach-shmobile/setup-r8a7740.c @@ -792,7 +792,14 @@ void __init r8a7740_init_irq_of(void) void __iomem *intc_msk_base = ioremap_nocache(0xe6900040, 0x10); void __iomem *pfc_inta_ctrl = ioremap_nocache(0xe605807c, 0x4);
+#ifdef CONFIG_ARCH_SHMOBILE_LEGACY + void __iomem *gic_dist_base = ioremap_nocache(0xc2800000, 0x1000); + void __iomem *gic_cpu_base = ioremap_nocache(0xc2000000, 0x1000); + + gic_init(0, 29, gic_dist_base, gic_cpu_base); +#else irqchip_init(); +#endif
/* route signals to GIC */ iowrite32(0x0, pfc_inta_ctrl);