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clk: mediatek: mt7981-topckgen: flag SGM_REG_SEL as critical

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[ Upstream commit aa690050c0 ]

Without the SGM_REG_SEL clock enabled the cpu freezes if trying to
access registers used by MT7981 clock drivers itself.
Mark SGM_REG_SEL as critical to make sure it is always enabled to
prevent freezes on boot even if the Ethernet driver which prepares
and enables the clock is not loaded or probed at a later point.

Fixes: 813c3b53b5 ("clk: mediatek: add MT7981 clock support")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://lore.kernel.org/r/fc157139e6b7f8dfb6430ac7191ba754027705e8.1708221995.git.daniel@makrotopia.org
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Daniel Golle
2024-02-18 03:11:15 +00:00
committed by Sasha Levin
parent 56b8f242eb
commit 6ff01b3141
1 changed files with 3 additions and 2 deletions
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drivers/clk/mediatek/clk-mt7981-topckgen.c
+3 -2
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@@ -357,8 +357,9 @@ static const struct mtk_mux top_muxes[] = {
MUX_GATE_CLR_SET_UPD(CLK_TOP_SGM_325M_SEL, "sgm_325m_sel",
sgm_325m_parents, 0x050, 0x054, 0x058, 8, 1, 15,
0x1C0, 21),
MUX_GATE_CLR_SET_UPD(CLK_TOP_SGM_REG_SEL, "sgm_reg_sel", sgm_reg_parents,
0x050, 0x054, 0x058, 16, 1, 23, 0x1C0, 22),
MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_SGM_REG_SEL, "sgm_reg_sel", sgm_reg_parents,
0x050, 0x054, 0x058, 16, 1, 23, 0x1C0, 22,
CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
MUX_GATE_CLR_SET_UPD(CLK_TOP_EIP97B_SEL, "eip97b_sel", eip97b_parents,
0x050, 0x054, 0x058, 24, 3, 31, 0x1C0, 23),
/* CLK_CFG_6 */