From e48a157d63074679f505c3deb2d963fa8fc304e1 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Mon, 13 Feb 2017 17:20:08 +0000 Subject: [PATCH 023/432] clk-bcm2835: Mark used PLLs and dividers CRITICAL 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 --- drivers/clk/bcm/clk-bcm2835.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index 6c2eac8deafd..841e2525ed53 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -1362,6 +1362,11 @@ bcm2835_register_pll_divider(struct bcm2835_cprman *cprman, divider->div.hw.init = &init; divider->div.table = NULL; + if (!(cprman_read(cprman, data->cm_reg) & data->hold_mask)) { + init.flags |= CLK_IS_CRITICAL; + divider->div.flags |= CLK_IS_CRITICAL; + } + divider->cprman = cprman; divider->data = data; -- 2.19.1