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| author | Pablo Sun <pablo.sun@mediatek.com> | 2024-09-27 18:30:01 +0800 | 
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2024-10-17 15:24:48 -0700 | 
| commit | 9bf7cfdbcf1c9fabc116e8f2f859c321f7c75fd0 (patch) | |
| tree | fc62c390b3ce943fc4695dc0bb7b3a9405c486c6 /drivers/usb/cdns3/cdns3-imx.c | |
| parent | 43c04ed79189214e478c4c0f82319e94ba30c756 (diff) | |
clk: mediatek: clk-mt8188-topckgen: Remove univpll from parents of mfg_core_tmp
Same as MT8195, MT8188 GPU clock is primarly supplied by the dedicated
mfgpll. The clock "mfg_core_tmp" is only used as an alt clock when
setting mfgpll clock rate.
If we keep the univpll parents from mfg_core_tmp, when setting
GPU frequency to 390000000, the common clock framework would switch
the parent to univpll, instead of setting mfgpll to 390000000:
    mfgpll                            0        0        0   949999756
    univpll                           2        2        0  2340000000
       univpll_d6                     1        1        0   390000000
          top_mfg_core_tmp            1        1        0   390000000
             mfg_ck_fast_ref          1        1        0   390000000
                mfgcfg_bg3d           1        1        0   390000000
This results in failures when subsequent devfreq operations need to
switch to other frequencies. So remove univpll from the parent list.
This solution is taken from commit 72d38ed720e9 ("clk: mediatek:
clk-mt8195-topckgen: Drop univplls from mfg mux parents")
Signed-off-by: Pablo Sun <pablo.sun@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240927103005.17605-3-pablo.sun@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-imx.c')
0 files changed, 0 insertions, 0 deletions
