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clk: spacemit: k3: mark top_dclk as CLK_IS_CRITICAL

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top_dclk is the DDR bus clock. If it is gated by clk_disable_unused,
all memory-mapped bus transactions cease to function, causing DMA
engines to hang and general system instability.

Mark it CLK_IS_CRITICAL so the CCF never gates it during the
unused clock sweep.

Fixes: e371a77255 ("clk: spacemit: k3: add the clock tree")
Reviewed-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Troy Mitchell 2026-04-24 16:20:32 +08:00 committed by Stephen Boyd
parent 254f49634e
commit 3e75021f61
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GPG Key ID: AD028897C6E49525
1 changed files with 1 additions and 1 deletions
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2
drivers/clk/spacemit/ccu-k3.c
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@ -846,7 +846,7 @@ static const struct clk_parent_data top_parents[] = {
CCU_PARENT_HW(pll6_d3),
};
CCU_MUX_DIV_GATE_FC_DEFINE(top_dclk, top_parents, APMU_TOP_DCLK_CTRL, 5, 3,
BIT(8), 2, 3, BIT(1), 0);
BIT(8), 2, 3, BIT(1), CLK_IS_CRITICAL);
static const struct clk_parent_data ucie_parents[] = {
CCU_PARENT_HW(pll1_d8_307p2),