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clk: eswin: Add CLK_IGNORE_UNUSED to NoC clock

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The gate_noc_nsp_clk provides the essential clock source for NPU,
DSP, and PCIe subsystems. During kernel init, the clock framework
attempts to disable unused clocks when clk_ignore_unused kernel
parameter is not set.
However, gate_noc_nsp_clk is required to remain enabled for these
critical subsystems to function properly, causing PCIe boot failures
when auto-disabled.

Add CLK_IGNORE_UNUSED flag to gate_noc_nsp_clk to ensure it stays
enabled even when clk_ignore_unused is not specified in kernel
command line.

Fixes: cd44f127c1 ("clk: eswin: Add eic7700 clock driver")
Signed-off-by: Xuyang Dong <dongxuyang@eswincomputing.com>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Brian Masney <bmasney@redhat.com>
This commit is contained in:
Xuyang Dong
2026-06-05 17:21:18 +08:00
committed by Brian Masney
parent 4adf593c6f
commit 22109b7329
1 changed files with 2 additions and 1 deletions
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3
drivers/clk/eswin/clk-eic7700.c
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@@ -791,7 +791,8 @@ static struct eswin_clk_info eic7700_clks[] = {
EIC7700_CLK_MUX_CPU_ROOT_3MUX1_GFREE,
CLK_SET_RATE_PARENT, EIC7700_REG_OFFSET_U84, 27, 0),
ESWIN_GATE_TYPE(EIC7700_CLK_GATE_NOC_NSP_CLK, "gate_noc_nsp_clk",
EIC7700_CLK_DIV_NOC_NSP_DYNM, CLK_SET_RATE_PARENT,
EIC7700_CLK_DIV_NOC_NSP_DYNM,
CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
EIC7700_REG_OFFSET_NOC, 31, 0),
ESWIN_GATE_TYPE(EIC7700_CLK_GATE_BOOTSPI, "gate_clk_bootspi",
EIC7700_CLK_MUX_BOOTSPI_CLK_2MUX1_GFREE,