Re: [PATCH v4 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-09-26 Thread Dmitry Osipenko
23.09.2019 16:36, Dmitry Osipenko пишет: > 23.09.2019 16:31, Dmitry Osipenko пишет: >> 23.09.2019 16:01, Jon Hunter пишет: >>> >>> On 23/09/2019 13:49, Dmitry Osipenko wrote: 23.09.2019 13:56, Jon Hunter пишет: > > > On 04/08/2019 21:29, Dmitry Osipenko wrote: >> It is possible

Re: [PATCH v4 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-09-23 Thread Dmitry Osipenko
23.09.2019 16:31, Dmitry Osipenko пишет: > 23.09.2019 16:01, Jon Hunter пишет: >> >> On 23/09/2019 13:49, Dmitry Osipenko wrote: >>> 23.09.2019 13:56, Jon Hunter пишет: On 04/08/2019 21:29, Dmitry Osipenko wrote: > It is possible to get a lockup if kernel decides to enter LP2 cpu

Re: [PATCH v4 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-09-23 Thread Dmitry Osipenko
23.09.2019 16:01, Jon Hunter пишет: > > On 23/09/2019 13:49, Dmitry Osipenko wrote: >> 23.09.2019 13:56, Jon Hunter пишет: >>> >>> >>> On 04/08/2019 21:29, Dmitry Osipenko wrote: It is possible to get a lockup if kernel decides to enter LP2 cpuidle from some clk-notifier, in that case CC

Re: [PATCH v4 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-09-23 Thread Jon Hunter
On 23/09/2019 13:49, Dmitry Osipenko wrote: > 23.09.2019 13:56, Jon Hunter пишет: >> >> >> On 04/08/2019 21:29, Dmitry Osipenko wrote: >>> It is possible to get a lockup if kernel decides to enter LP2 cpuidle >>> from some clk-notifier, in that case CCF's "prepare" mutex is kept locked >>> and th

Re: [PATCH v4 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-09-23 Thread Dmitry Osipenko
23.09.2019 13:56, Jon Hunter пишет: > > > On 04/08/2019 21:29, Dmitry Osipenko wrote: >> It is possible to get a lockup if kernel decides to enter LP2 cpuidle >> from some clk-notifier, in that case CCF's "prepare" mutex is kept locked >> and thus clk_get_rate(pclk) blocks on the same mutex with

Re: [PATCH v4 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-09-23 Thread Jon Hunter
On 04/08/2019 21:29, Dmitry Osipenko wrote: > It is possible to get a lockup if kernel decides to enter LP2 cpuidle > from some clk-notifier, in that case CCF's "prepare" mutex is kept locked > and thus clk_get_rate(pclk) blocks on the same mutex with interrupts being > disabled. > > Signed-off

Re: [PATCH v4 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-09-22 Thread Dmitry Osipenko
04.08.2019 23:29, Dmitry Osipenko пишет: > It is possible to get a lockup if kernel decides to enter LP2 cpuidle > from some clk-notifier, in that case CCF's "prepare" mutex is kept locked > and thus clk_get_rate(pclk) blocks on the same mutex with interrupts being > disabled. > > Signed-off-by: D

[PATCH v4 1/2] soc/tegra: pmc: Query PCLK clock rate at probe time

2019-08-04 Thread Dmitry Osipenko
It is possible to get a lockup if kernel decides to enter LP2 cpuidle from some clk-notifier, in that case CCF's "prepare" mutex is kept locked and thus clk_get_rate(pclk) blocks on the same mutex with interrupts being disabled. Signed-off-by: Dmitry Osipenko --- Changelog: v4: Added clk-notifi