From: Troy Mitchell Date: Fri, 24 Apr 2026 08:20:32 +0000 (+0800) Subject: clk: spacemit: k3: mark top_dclk as CLK_IS_CRITICAL X-Git-Tag: v7.1-rc3~3^2~5 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3e75021f615ceee8562e6455c335936b39929ffb;p=thirdparty%2Flinux.git clk: spacemit: k3: mark top_dclk as CLK_IS_CRITICAL 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 Signed-off-by: Troy Mitchell Signed-off-by: Stephen Boyd --- diff --git a/drivers/clk/spacemit/ccu-k3.c b/drivers/clk/spacemit/ccu-k3.c index e98afd59f05c..bb8b75bdbdb3 100644 --- a/drivers/clk/spacemit/ccu-k3.c +++ b/drivers/clk/spacemit/ccu-k3.c @@ -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),