On Mon, Feb 12, 2018 at 02:05:36PM +0200, Mikko Perttunen wrote: > This seems to cause a system hang with an HDMI monitor attached - > likely in unpowergate as if I disable powergating the hang doesn't > happen. > > Have you tested with a display attached? > Yes. A DSI display at least seems to work. Peter. > Mikko > > On 01/25/2018 04:00 PM, Peter De Schrijver wrote: > >This patch series introduces the Memory Built-In Self Test (MBIST) > >work around (WAR) needed when power ungating certain domains. More > >details can be found in 'clk: tegra: MBIST WAR for Tegra210'. I choose to > >implement the WAR in the Tegra210 clock driver, because most accesses are > >to CAR registers and for the VENC domain, we need to make sure the CSI > >clock source is not changed during the WAR execution. > > > >Changes in v4: > >* moved locking and clock control to tegra210_clk_handle_mbist_war() > >* propagate errors during WAR execution to user > >* rework error handling tegra210_mbist_clk_init() slightly > > > >Changes in v3: > >* fix compile problem on non-Tegra210 platforms > >* fix clock handling bug in tegra210_generic_mbist_war() > >* addressed minor comments > > > >Changes in v2: > >* Use readl for fence_delay() rather than readl_relaxed > >* clarify MBIST and WAR acronyms > > > >Peter De Schrijver (4): > > clk: tegra: Add la clock for Tegra210 > > clk: tegra: add fence_delay for clock registers > > clk: tegra: MBIST work around for Tegra210 > > soc/tegra: pmc: MBIST work around for Tegra210 > > > > drivers/clk/tegra/clk-tegra210.c | 357 ++++++++++++++++++++++++++++++- > > drivers/clk/tegra/clk.h | 7 + > > drivers/soc/tegra/pmc.c | 7 + > > include/dt-bindings/clock/tegra210-car.h | 2 +- > > include/linux/clk/tegra.h | 6 + > > 5 files changed, 376 insertions(+), 3 deletions(-) > > -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
