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clk: mvebu: kirkwood: maintain clock init order

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Init order of CLK_OF_DECLARE'd drivers depends on compile order.
Unfortunately, clk_of_init does not allow drivers to return errors,
e.g. -EPROBE_DEFER if parent clocks have not been registered, yet.

To avoid init order woes for MVEBU clock drivers, we take care of
proper init order ourselves. This patch joins core-clk and gating-clk
init to maintain proper init order.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Sebastian Hesselbarth 2014-01-25 19:19:10 +01:00 committed by Jason Cooper
parent 8f7fc5450b
commit 58d516ae95
1 changed files with 16 additions and 18 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

34
drivers/clk/mvebu/kirkwood.c
View file

@ -193,13 +193,6 @@ static const struct coreclk_soc_desc kirkwood_coreclks = {
.num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
};
static void __init kirkwood_coreclk_init(struct device_node *np)
{
mvebu_coreclk_setup(np, &kirkwood_coreclks);
}
CLK_OF_DECLARE(kirkwood_core_clk, "marvell,kirkwood-core-clock",
kirkwood_coreclk_init);
static const struct coreclk_soc_desc mv88f6180_coreclks = {
.get_tclk_freq = kirkwood_get_tclk_freq,
.get_cpu_freq = mv88f6180_get_cpu_freq,
@ -208,13 +201,6 @@ static const struct coreclk_soc_desc mv88f6180_coreclks = {
.num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
};
static void __init mv88f6180_coreclk_init(struct device_node *np)
{
mvebu_coreclk_setup(np, &mv88f6180_coreclks);
}
CLK_OF_DECLARE(mv88f6180_core_clk, "marvell,mv88f6180-core-clock",
mv88f6180_coreclk_init);
/*
* Clock Gating Control
*/
@ -239,9 +225,21 @@ static const struct clk_gating_soc_desc kirkwood_gating_desc[] __initconst = {
{ }
};
static void __init kirkwood_clk_gating_init(struct device_node *np)
static void __init kirkwood_clk_init(struct device_node *np)
{
mvebu_clk_gating_setup(np, kirkwood_gating_desc);
struct device_node *cgnp =
of_find_compatible_node(NULL, NULL, "marvell,kirkwood-gating-clock");
if (of_device_is_compatible(np, "marvell,mv88f6180-core-clock"))
mvebu_coreclk_setup(np, &mv88f6180_coreclks);
else
mvebu_coreclk_setup(np, &kirkwood_coreclks);
if (cgnp)
mvebu_clk_gating_setup(cgnp, kirkwood_gating_desc);
}
CLK_OF_DECLARE(kirkwood_clk_gating, "marvell,kirkwood-gating-clock",
kirkwood_clk_gating_init);
CLK_OF_DECLARE(kirkwood_clk, "marvell,kirkwood-core-clock",
kirkwood_clk_init);
CLK_OF_DECLARE(mv88f6180_clk, "marvell,mv88f6180-core-clock",
kirkwood_clk_init);