The VPU firmware assume that the PLLD_PER isn't modified by the ARM core. Otherwise this could cause firmware lookups. So mark the clock as critical to avoid this. Signed-off-by: Stefan Wahren <wahrenst@xxxxxxx> --- drivers/clk/bcm/clk-bcm2835.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index fdf672a..b62052e 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -1785,7 +1785,7 @@ static const struct bcm2835_clk_desc clk_desc_array[] = { .load_mask = CM_PLLD_LOADPER, .hold_mask = CM_PLLD_HOLDPER, .fixed_divider = 1, - .flags = CLK_SET_RATE_PARENT), + .flags = CLK_IS_CRITICAL | CLK_SET_RATE_PARENT), [BCM2835_PLLD_DSI0] = REGISTER_PLL_DIV( SOC_ALL, .name = "plld_dsi0", -- 2.7.4