Commit 037705e9 authored by Drew Fustini's avatar Drew Fustini Committed by Stephen Boyd
Browse files

clk: thead: Add CLK_IGNORE_UNUSED to fix TH1520 boot 



Add the CLK_IGNORE_UNUSED flag to apb_pclk, cpu2peri_x2h_clk,
perisys_apb2_hclk and perisys_apb3_hclk.

Without this flag, the boot hangs after "clk: Disabling unused clocks"
unless clk_ignore_unused is in the kernel cmdline.

Fixes: ae81b69f ("clk: thead: Add support for T-Head TH1520 AP_SUBSYS clocks")
Signed-off-by: default avatarDrew Fustini <dfustini@tenstorrent.com>
Link: https://lore.kernel.org/r/20250113-th1520-clk_ignore_unused-v1-2-0b08fb813438@tenstorrent.com


Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent a826e53f

drivers/clk/thead/clk-th1520-ap.c

+4 −4
Original line number Diff line number Diff line
@@ -657,7 +657,7 @@ static struct ccu_div apb_pclk = { 
		.hw.init	= CLK_HW_INIT_PARENTS_DATA("apb-pclk",

						      apb_parents,

						      &ccu_div_ops,

						      0),

						      CLK_IGNORE_UNUSED),

	},

};
@@ -787,13 +787,13 @@ static CCU_GATE(CLK_X2X_CPUSYS, x2x_cpusys_clk, "x2x-cpusys", axi4_cpusys2_aclk_ 
		0x134, BIT(7), 0);

static CCU_GATE(CLK_CPU2AON_X2H, cpu2aon_x2h_clk, "cpu2aon-x2h", axi_aclk_pd, 0x138, BIT(8), 0);

static CCU_GATE(CLK_CPU2PERI_X2H, cpu2peri_x2h_clk, "cpu2peri-x2h", axi4_cpusys2_aclk_pd,

		0x140, BIT(9), 0);

		0x140, BIT(9), CLK_IGNORE_UNUSED);

static CCU_GATE(CLK_PERISYS_APB1_HCLK, perisys_apb1_hclk, "perisys-apb1-hclk", perisys_ahb_hclk_pd,

		0x150, BIT(9), 0);

static CCU_GATE(CLK_PERISYS_APB2_HCLK, perisys_apb2_hclk, "perisys-apb2-hclk", perisys_ahb_hclk_pd,

		0x150, BIT(10), 0);

		0x150, BIT(10), CLK_IGNORE_UNUSED);

static CCU_GATE(CLK_PERISYS_APB3_HCLK, perisys_apb3_hclk, "perisys-apb3-hclk", perisys_ahb_hclk_pd,

		0x150, BIT(11), 0);

		0x150, BIT(11), CLK_IGNORE_UNUSED);

static CCU_GATE(CLK_PERISYS_APB4_HCLK, perisys_apb4_hclk, "perisys-apb4-hclk", perisys_ahb_hclk_pd,

		0x150, BIT(12), 0);

static CCU_GATE(CLK_NPU_AXI, npu_axi_clk, "npu-axi", axi_aclk_pd, 0x1c8, BIT(5), 0);