Re: [PATCH mvebu v2 05/10] clk: mvebu: armada-37xx-periph: Fix switching CPU freq from 250 Mhz to 1 GHz

Stephen Boyd
2021-02-10T02:30:00Z

Quoting Pali Rohár (2021-01-14 04:40:27)
> It was observed that the workaround introduced by commit 61c40f35f5cd
> ("clk: mvebu: armada-37xx-periph: Fix switching CPU rate from 300Mhz to
> 1.2GHz") when base CPU frequency is 1.2 GHz is also required when base
> CPU frequency is 1 GHz. Otherwise switching CPU frequency directly from
> L2 (250 MHz) to L0 (1 GHz) causes a crash.
>
> When base CPU frequency is just 800 MHz no crashed were observed during
> switch from L2 to L0.
>
> Signed-off-by: Pali Rohár <pali@kernel.org>
> Fixes: 2089dc33ea0e ("clk: mvebu: armada-37xx-periph: add DVFS support for cpu clocks")
> Cc: stable@vger.kernel.org # 61c40f35f5cd ("clk: mvebu: armada-37xx-periph: Fix switching CPU rate from 300Mhz to 1.2GHz")
> ---

Acked-by: Stephen Boyd <sboyd@kernel.org>