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imx8m: clock: improve irq response latency

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Improve the IRQ response latency by setting GIC root clock source to
sys_pll2_200m from osc.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2019-10-16 10:24:20 +00:00 committed by Stefano Babic
parent 9e09445549
commit eeca15a50a
1 changed files with 6 additions and 0 deletions
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6
arch/arm/mach-imx/imx8m/clock_imx8mq.c
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@ -806,6 +806,12 @@ int clock_init(void)
clock_enable(CCGR_TSENSOR, 1);
clock_enable(CCGR_OCOTP, 1);
/* config GIC ROOT to sys_pll2_200m */
clock_enable(CCGR_GIC, 0);
clock_set_target_val(GIC_CLK_ROOT,
CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(1));
clock_enable(CCGR_GIC, 1);
return 0;
}
#endif