Re: [PATCH v3 4/5] clk: spacemit: k3: mark top_dclk as CLK_IS_CRITICAL

Stephen Boyd
2026-04-29T03:46:53Z

Quoting Troy Mitchell (2026-04-24 01:20:32)
> 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: e371a77255b8 ("clk: spacemit: k3: add the clock tree")
> Reviewed-by: Brian Masney <bmasney@redhat.com>
> Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
> ---

Applied to clk-fixes