From ccc67b2b1bd89e552b11fd408b08c42f7bacb397 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Mon, 13 Feb 2017 17:20:08 +0000 Subject: [PATCH 026/277] 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 11d89d106026..fe8f5d65f274 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -1391,6 +1391,11 @@ 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; -- 2.16.1