From a87e7ca656f8b80caf7db0056ba4b6191018359f Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Mon, 13 Feb 2017 17:20:08 +0000 Subject: [PATCH 023/725] 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(+) --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -1362,6 +1362,11 @@ bcm2835_register_pll_divider(struct bcm2 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;