linux/drivers/memory/tegra, branch v5.5

memory: tegra30-emc: Fix panic on suspend

2019-11-18T12:54:40Z

Trying to suspend driver results in a crash if timings aren't available in device-tree. Reported-by: Jon Hunter Fixes: e34212c75a68 ("memory: tegra: Introduce Tegra30 EMC driver") Signed-off-by: Dmitry Osipenko Acked-by: Jon Hunter Tested-by: Jon Hunter Signed-off-by: Thierry Reding

memory: tegra: Consolidate registers definition into common header

2019-11-11T13:55:27Z

The Memory Controller registers definition is sparse and duplicated, let's consolidate everything into a common place for consistency. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

memory: tegra: Ensure timing control debug features are disabled

2019-11-11T13:55:27Z

Timing control debug features should be disabled at a boot time, but you never now and hence it's better to disable them explicitly because some of those features are crucial for the driver to do a proper thing. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

memory: tegra: Introduce Tegra30 EMC driver

2019-11-11T13:55:27Z

Introduce driver for the External Memory Controller (EMC) found on Tegra30 chips, it controls the external DRAM on the board. The purpose of this driver is to program memory timing for external memory on the EMC clock rate change. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Tested-by: Peter Geis Signed-off-by: Thierry Reding

memory: tegra: Do not handle error from wait_for_completion_timeout()

2019-11-11T13:55:26Z

Contrary to its wait_for_completion_timeout_interruptible() sibling, the wait_for_completion_timeout() function does not return an error. Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

memory: tegra: Increase handshake timeout on Tegra20

2019-11-11T13:55:26Z

Turned out that it could take over a millisecond under some circumstances, like running on a very low CPU/memory frequency. TRM says that handshake happens when there is a "safe" moment, but not explains exactly what that moment is. Apparently at least memory should be idling and thus the low frequency should be a reasonable cause for a longer handshake delay. Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

memory: tegra: Print a brief info message about EMC timings

2019-11-11T13:55:26Z

During boot print how many memory timings got the driver and what's the RAM code. This is a very useful information when something is wrong with boards memory timing. Suggested-by: Marc Dietrich Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

memory: tegra: Pre-configure debug register on Tegra20

2019-11-11T13:55:25Z

The driver expects certain debug features to be disabled in order to work properly. Let's disable them explicitly for consistency and to not rely on a boot state. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

memory: tegra: Include io.h instead of iopoll.h

2019-11-11T13:55:25Z

The register polling code was gone, but the included header change was missed. Fix it up for consistency. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

memory: tegra: Adapt for Tegra20 clock driver changes

2019-11-11T13:55:25Z

Now Tegra20 and Tegra30 EMC drivers should provide clock-rounding functionality using the new Tegra clock driver API. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding