system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-19 18:46:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse source 
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>
This commit is contained in:
Daniel Golle 2024-02-18 03:11:15 +00:00 committed by Stephen Boyd
parent a65083fa66
commit aa690050c0
1 changed files with 3 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/clk/mediatek/clk-mt7981-topckgen.c
View file

@ -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 */