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clk-bcm2835: Mark used PLLs and dividers CRITICAL

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The VPU configures and relies on several PLLs and dividers. Mark all
enabled dividers and their PLLs as CRITICAL to prevent the kernel from
switching them off.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
This commit is contained in:
Phil Elwell
2017-02-13 17:20:08 +00:00
committed by Dom Cobley
parent 75828ac503
commit 17f7c9bc06
1 changed files with 5 additions and 0 deletions
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5
drivers/clk/bcm/clk-bcm2835.c
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@@ -1407,6 +1407,11 @@ bcm2835_register_pll_divider(struct bcm2835_cprman *cprman,
divider->div.hw.init = &init; divider->div.hw.init = &init;
divider->div.table = NULL; divider->div.table = NULL;
if (!(cprman_read(cprman, divider_data->cm_reg) & divider_data->hold_mask)) {
init.flags |= CLK_IS_CRITICAL;
divider->div.flags |= CLK_IS_CRITICAL;
}
divider->cprman = cprman; divider->cprman = cprman;
divider->data = divider_data; divider->data = divider_data;