Messages in this thread Patch in this message | | | From | Eric Anholt <> | Subject | [PATCH v3 1/4] clk: bcm2835: Mark the VPU clock as critical | Date | Wed, 1 Jun 2016 12:05:33 -0700 |
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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.
Signed-off-by: Eric Anholt <eric@anholt.net> ---
v2: Rewrite to use a .flags in bcm2835_clock_data, since other clocks will need this too.
drivers/clk/bcm/clk-bcm2835.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index 7a7970865c2d..d9db03cb3fd8 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -443,6 +443,8 @@ struct bcm2835_clock_data { /* Number of fractional bits in the divider */ u32 frac_bits; + u32 flags; + bool is_vpu_clock; bool is_mash_clock; }; @@ -1230,7 +1232,7 @@ static struct clk *bcm2835_register_clock(struct bcm2835_cprman *cprman, 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; @@ -1649,6 +1651,7 @@ static const struct bcm2835_clk_desc clk_desc_array[] = { .div_reg = CM_VPUDIV, .int_bits = 12, .frac_bits = 8, + .flags = CLK_IS_CRITICAL, .is_vpu_clock = true), /* clocks with per parent mux */ -- 2.8.0.rc3
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