| Message ID | 20210201172557.3776708-1-jernej.skrabec@siol.net |
|---|---|
| State | Accepted |
| Commit | bc24884c4c6bb589d61a1802cc0824b00ffe72d1 |
| Delegated to: | Andre Przywara |
| Headers | show |
| Series | [v2] sunxi: spl: Fix H616 clock initialization | expand |
diff --git a/arch/arm/mach-sunxi/clock_sun50i_h6.c b/arch/arm/mach-sunxi/clock_sun50i_h6.c index 06d84eb158d7..492fc4a3fca8 100644 --- a/arch/arm/mach-sunxi/clock_sun50i_h6.c +++ b/arch/arm/mach-sunxi/clock_sun50i_h6.c @@ -9,6 +9,11 @@ void clock_init_safe(void) { struct sunxi_ccm_reg *const ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* this seems to enable PLLs on H616 */ + if (IS_ENABLED(CONFIG_MACH_SUN50I_H616)) + setbits_le32(SUNXI_PRCM_BASE + 0x250, 0x10); + clock_set_pll1(408000000); writel(CCM_PLL6_DEFAULT, &ccm->pll6_cfg);
It turns out that there is a magic bit in PRCM region which seemingly makes PLLs work if it's enabled. Sadly, there is no documentation what it does exactly, so we'll just mimick BSP boot0 behaviour and enable it before any clock is set up. Fixes: b18bd53d6cde ("sunxi: introduce support for H616 clocks") Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> --- Changes from v1: - use if (IS_ENABLED()) instead of #ifdef #endif arch/arm/mach-sunxi/clock_sun50i_h6.c | 5 +++++ 1 file changed, 5 insertions(+)