Re: [PATCH v3 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-08-02 Thread Dmitry Osipenko
02.08.2019 16:38, Peter De Schrijver пишет: > On Tue, Jul 30, 2019 at 08:40:19PM +0300, Dmitry Osipenko wrote: >> The PCLK clock is running off SCLK, which is a critical clock that is >> very unlikely to randomly change its rate. It is possible to get a >> lockup if kernel decides to enter LP2 cpui

Re: [PATCH v3 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-08-02 Thread Peter De Schrijver
On Tue, Jul 30, 2019 at 08:40:19PM +0300, Dmitry Osipenko wrote: > The PCLK clock is running off SCLK, which is a critical clock that is > very unlikely to randomly change its rate. It is possible to get a > lockup if kernel decides to enter LP2 cpuidle from a clk-notifier, which > happens occasion

[PATCH v3 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-07-30 Thread Dmitry Osipenko
The PCLK clock is running off SCLK, which is a critical clock that is very unlikely to randomly change its rate. It is possible to get a lockup if kernel decides to enter LP2 cpuidle from a clk-notifier, which happens occasionally in a case of Tegra30 EMC driver that waits for the clk-change event