diff options
Diffstat (limited to 'src/soc/mediatek/mt8183/pll.c')
| -rw-r--r-- | src/soc/mediatek/mt8183/pll.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8183/pll.c b/src/soc/mediatek/mt8183/pll.c index 39dfa264e3..dedd59d4f2 100644 --- a/src/soc/mediatek/mt8183/pll.c +++ b/src/soc/mediatek/mt8183/pll.c @@ -365,5 +365,27 @@ void mt_pll_init(void) void mt_pll_raise_ca53_freq(u32 freq) { + /* enable [4] intermediate clock armpll_divider_pll1_ck */ + setbits32(&mtk_topckgen->clk_misc_cfg_0, 1 << 4); + + /* switch ca53 clock source to intermediate clock */ + clrsetbits32(&mt8183_mcucfg->mp0_pll_divider_cfg, MUX_MASK, + MUX_SRC_DIV_PLL1); + + /* disable armpll_ll frequency output */ + clrbits32(plls[APMIXED_ARMPLL_LL].reg, PLL_EN); + + /* raise armpll_ll frequency */ pll_set_rate(&plls[APMIXED_ARMPLL_LL], freq); + + /* enable armpll_ll frequency output */ + setbits32(plls[APMIXED_ARMPLL_LL].reg, PLL_EN); + udelay(PLL_EN_DELAY); + + /* switch ca53 clock source back to armpll_ll */ + clrsetbits32(&mt8183_mcucfg->mp0_pll_divider_cfg, MUX_MASK, + MUX_SRC_ARMPLL); + + /* disable [4] intermediate clock armpll_divider_pll1_ck */ + clrbits32(&mtk_topckgen->clk_misc_cfg_0, 1 << 4); } |