From 9c899d1ac90b4f6357f0b531a29d8403c8a021c7 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 26 Apr 2016 11:44:59 -0700 Subject: [PATCH] clk: bcm2835: Mark the VPU clock as critical The VPU clock is also the clock for our AXI bus, so we really can't disable it. This might have happened during boot if, for example, uart1 (aux_uart clock) probed and was then disabled before the other consumers of the VPU clock had probed. v2: Rewrite to use a .flags in bcm2835_clock_data, since other clocks will need this too. Signed-off-by: Eric Anholt --- drivers/clk/bcm/clk-bcm2835.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -446,6 +446,8 @@ struct bcm2835_clock_data { /* Number of fractional bits in the divider */ u32 frac_bits; + u32 flags; + bool is_vpu_clock; bool is_mash_clock; }; @@ -1250,7 +1252,7 @@ static struct clk *bcm2835_register_cloc init.parent_names = parents; init.num_parents = data->num_mux_parents; init.name = data->name; - init.flags = CLK_IGNORE_UNUSED; + init.flags = data->flags | CLK_IGNORE_UNUSED; if (data->is_vpu_clock) { init.ops = &bcm2835_vpu_clock_clk_ops; @@ -1669,6 +1671,7 @@ static const struct bcm2835_clk_desc clk .div_reg = CM_VPUDIV, .int_bits = 12, .frac_bits = 8, + .flags = CLK_IS_CRITICAL, .is_vpu_clock = true), /* clocks with per parent mux */