[PATCH 4/4] clk: mvebu: kirkwood: maintain clock init order
From: sebastian.hesselbarth@gmail.com (Sebastian Hesselbarth)
Date: 2014-01-25 18:19:32
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Subsystem:
arm/marvell kirkwood and armada 370, 375, 38x, 39x, xp, 3700, 7k/8k, cn9130 soc support, common clk framework, the rest · Maintainers:
Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Stephen Boyd, Brian Masney, Jerome Brunet, Linus Torvalds
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> --- Cc: Mike Turquette <redacted> Cc: Jason Cooper <redacted> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Gregory Clement <redacted> Cc: Thomas Petazzoni <redacted> Cc: Ezequiel Garcia <redacted> Cc: linux-arm-kernel at lists.infradead.org Cc: linux-kernel at vger.kernel.org --- drivers/clk/mvebu/kirkwood.c | 34 ++++++++++++++++------------------ 1 file changed, 16 insertions(+), 18 deletions(-)
diff --git a/drivers/clk/mvebu/kirkwood.c b/drivers/clk/mvebu/kirkwood.c
index 2636a55f29f9..ddb666a86500 100644
--- a/drivers/clk/mvebu/kirkwood.c
+++ b/drivers/clk/mvebu/kirkwood.c@@ -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);
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1.8.5.2