diff options
| -rw-r--r-- | arch/arm/mach-imx/imx8ulp/cgc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx8ulp/cgc.c b/arch/arm/mach-imx/imx8ulp/cgc.c index ccd977f1a5..d240abaee4 100644 --- a/arch/arm/mach-imx/imx8ulp/cgc.c +++ b/arch/arm/mach-imx/imx8ulp/cgc.c @@ -189,6 +189,14 @@ void cgc1_pll3_init(ulong freq) void cgc2_pll4_init(bool pll4_reset) { + /* Check the NICLPAV first to ensure not from PLL4 PFD1 clock */ + if ((readl(&cgc2_regs->niclpavclk) & GENMASK(29, 28)) == BIT(28)) { + /* switch to FRO 192 first */ + clrbits_le32(&cgc2_regs->niclpavclk, GENMASK(29, 28)); + while (!(readl(&cgc2_regs->niclpavclk) & BIT(27))) + ; + } + /* Disable PFD DIV and clear DIV */ writel(0x80808080, &cgc2_regs->pll4div_pfd0); writel(0x80808080, &cgc2_regs->pll4div_pfd1); |