diff options
Diffstat (limited to 'src/soc/mediatek/mt8192/pll.c')
| -rw-r--r-- | src/soc/mediatek/mt8192/pll.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8192/pll.c b/src/soc/mediatek/mt8192/pll.c index 6d61fb4d5a..f0a9509173 100644 --- a/src/soc/mediatek/mt8192/pll.c +++ b/src/soc/mediatek/mt8192/pll.c @@ -559,3 +559,28 @@ u32 mt_fmeter_get_freq_khz(enum fmeter_type type, u32 id) return 0; } + +void mt_pll_raise_cci_freq(u32 freq) +{ + /* enable [4] intermediate clock armpll_divider_pll1_ck */ + setbits32(&mtk_topckgen->clk_misc_cfg_0, 1 << 4); + + /* switch cci clock source to intermediate clock */ + clrsetbits32(&mt8192_mcucfg->bus_plldiv_cfg, MCU_MUX_MASK, MCU_MUX_SRC_DIV_PLL1); + + /* disable ccipll frequency output */ + clrbits32(plls[APMIXED_CCIPLL].reg, PLL_EN); + + /* raise ccipll frequency */ + pll_set_rate(&plls[APMIXED_CCIPLL], freq); + + /* enable ccipll frequency output */ + setbits32(plls[APMIXED_CCIPLL].reg, PLL_EN); + udelay(PLL_EN_DELAY); + + /* switch cci clock source back to ccipll */ + clrsetbits32(&mt8192_mcucfg->bus_plldiv_cfg, MCU_MUX_MASK, MCU_MUX_SRC_PLL); + + /* disable [4] intermediate clock armpll_divider_pll1_ck */ + clrbits32(&mtk_topckgen->clk_misc_cfg_0, 1 << 4); +} |