From d1b7a7961814d5a60bc1e8494b2308525b42b584 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Mon, 13 Feb 2017 17:20:08 +0000 Subject: [PATCH 056/634] 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 9332379565cb..d111f7f4fc81 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -1378,6 +1378,11 @@ 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 = divider_data; -- 2.33.1