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e34084fb9a
INTC-SYS is the module clock for the GIC. Accessing the GIC while it is disabled causes: Unhandled fault: asynchronous external abort (0x1211) at 0x00000000 Currently, the GIC-400 driver cannot enable its module clock for several reasons: - It does not use a platform device, so Runtime PM is not an option, - gic_of_init() runs before any clocks are registered, so it cannot enable the clock explicitly, - gic_of_init() cannot return -EPROBE_DEFER, as IRQCHIP_DECLARE() doesn't support deferred probing. Hence we have to keep on relying on the boot loader for enabling the module clock. To prevent the module clock from being disabled when the CCF core thinks it is unused, and thus causing a system lock-up, add a check to the MSTP clock driver and enable CLK_IS_CRITICAL. This will make sure the module clock is never disabled. This is a hard dependency for describing the INTC-SYS clock in DT on R-Mobile APE6 and R-Car Gen2. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@codeaurora.org> |
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.. | ||
clk-div6.c | ||
clk-div6.h | ||
clk-emev2.c | ||
clk-mstp.c | ||
clk-r8a73a4.c | ||
clk-r8a7740.c | ||
clk-r8a7778.c | ||
clk-r8a7779.c | ||
clk-rcar-gen2.c | ||
clk-rz.c | ||
clk-sh73a0.c | ||
Kconfig | ||
Makefile | ||
r8a7743-cpg-mssr.c | ||
r8a7745-cpg-mssr.c | ||
r8a7795-cpg-mssr.c | ||
r8a7796-cpg-mssr.c | ||
rcar-gen2-cpg.c | ||
rcar-gen2-cpg.h | ||
rcar-gen3-cpg.c | ||
rcar-gen3-cpg.h | ||
renesas-cpg-mssr.c | ||
renesas-cpg-mssr.h |