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author | AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> | 2023-11-03 13:25:31 +0300 |
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committer | Stephen Boyd <sboyd@kernel.org> | 2024-01-04 02:55:02 +0300 |
commit | a6a70a670c7d8964455fc9bb3ab53b2df0a14150 (patch) | |
tree | fe2e8c369e1c94efc6bda3625da85b02b05f59c7 /drivers/clk/mediatek/clk-mt8195-topckgen.c | |
parent | 616eceb1372be8043917515c41c511e2eb914e57 (diff) | |
download | linux-a6a70a670c7d8964455fc9bb3ab53b2df0a14150.tar.xz |
clk: mediatek: clk-mux: Support custom parent indices for muxes
Add support for customized parent indices for MediaTek muxes: this is
necessary for the case in which we want to exclude some clocks from
a mux's parent clocks list, where the exclusions are not from the
very bottom of the list but either in the middle or the beginning.
Example:
- MUX1 (all parents)
- parent1; idx=0
- parent2; idx=1
- parent3; idx=2
- MUX1 (wanted parents)
- parent1; idx=0
- parent3; idx=2
To achieve that add a `parent_index` array pointer to struct mtk_mux,
then in .set_parent(), .get_parent() callbacks check if this array
was populated and eventually get the index from that.
Also, to avoid updating all clock drivers for all SoCs, rename the
"main" macro to __GATE_CLR_SET_UPD_FLAGS (so, `__` was added) and
add the new member to it; furthermore, GATE_CLK_SET_UPD_FLAGS has
been reintroduced as being fully compatible with the older version.
The new parent_index can be specified with the new `_INDEXED`
variants of the MUX_GATE_CLR_SET_UPD_xxxx macros.
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20231103102533.69280-2-angelogioacchino.delregno@collabora.com
Tested-by: Fei Shao <fshao@chromium.org>
Reviewed-by: Fei Shao <fshao@chromium.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/mediatek/clk-mt8195-topckgen.c')
0 files changed, 0 insertions, 0 deletions