kernel/linux.git/drivers/memory/tegra, branch v5.13.1

memory: tegra: Print out info-level once per driver probe

2021-04-01T17:58:22+00:00

Probing of EMC drivers may be deferred and in this case we get duplicated info messages during kernel boot. Use dev_info_once() helper to silence the duplicated messages. Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20210330230445.26619-7-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra20: Protect debug code with a lock

2021-04-01T17:58:22+00:00

Simultaneous accesses to MC_STAT h/w shouldn't be allowed since one collection process stomps on another. There is no good reason for polling stats in parallel in practice, nevertheless let's add a protection lock, just for consistency. Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20210323210446.24867-2-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra20: Correct comment to MC_STAT registers writes

2021-04-01T17:58:22+00:00

The code was changed multiple times and the comment to MC_STAT registers writes became slightly outdated. The MC_STAT programming now isn't hardcoded to the "bandwidth" mode, let's clarify this in the comment. Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20210323210446.24867-1-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra20: Add debug statistics

2021-04-01T17:58:22+00:00

Add debug statistics collection support. The statistics is available via debugfs in '/sys/kernel/debug/mc/stats', it shows percent of memory controller utilization for each memory client. This information is intended to help with debugging of memory performance issues, it already was proven to be useful by helping to improve memory bandwidth management of the display driver. Signed-off-by: Dmitry Osipenko Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20210319130933.23261-1-digetx@gmail.com

memory: tegra: replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE

2021-04-01T17:58:22+00:00

Fix the following coccicheck warning: drivers/memory/tegra/tegra124-emc.c:1207:0-23: WARNING: tegra_emc_debug_min_rate_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE Signed-off-by: Yang Li Link: https://lore.kernel.org/r/1614243958-55847-1-git-send-email-yang.lee@linux.alibaba.com Signed-off-by: Krzysztof Kozlowski

Merge tag 'memory-controller-drv-5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers

2021-02-11T12:48:49+00:00

Memory controller drivers for v5.12, part two Two minor cleanups and one fix for compile testing (when !CONFIG_OF). * tag 'memory-controller-drv-5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl: memory: tegra186-emc: Replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE memory: samsung: exynos5422-dmc: Correct function names in kerneldoc memory: ti-emif-pm: Drop of_match_ptr from of_device_id table Link: https://lore.kernel.org/r/20210211081829.7317-1-krzk@kernel.org Signed-off-by: Arnd Bergmann

memory: tegra186-emc: Replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE

2021-02-08T17:15:45+00:00

Fix the following coccicheck warning: drivers/memory/tegra/tegra186-emc.c:158:0-23: WARNING: tegra186_emc_debug_max_rate_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE. Signed-off-by: Jiapeng Chong Link: https://lore.kernel.org/r/1612684970-125948-1-git-send-email-jiapeng.chong@linux.alibaba.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Remove calls to dev_pm_opp_set_clkname()

2021-01-29T06:59:01+00:00

There is no point calling dev_pm_opp_set_clkname() with the "name" parameter set to NULL, this is already done by the OPP core at setup time and should work as it is. Signed-off-by: Viresh Kumar Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Link: https://lore.kernel.org/r/0f22cc1791d8b88c50a9790c2dc19455b34ec7b0.1611742564.git.viresh.kumar@linaro.org Signed-off-by: Krzysztof Kozlowski

memory: tegra: Check whether reset is already asserted

2021-01-22T23:10:40+00:00

Check whether memory client reset is already asserted in order to prevent DMA-flush error on trying to re-assert an already asserted reset. This becomes a problem once PMC GENPD is enabled to use memory resets since GENPD will get a error and fail to toggle power domain. PMC GENPDs can't be toggled safely without holding memory reset on Tegra and we're about to fix this. Tested-by: Peter Geis # Ouya T30 Tested-by: Nicolas Chauvet # PAZ00 T20 Tested-by: Matt Merhar # Ouya T30 Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20210119235210.13006-1-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra124: Support interconnect framework

2021-01-05T17:03:22+00:00

Now Internal and External memory controllers are memory interconnection providers. This allows us to use interconnect API for tuning of memory configuration. EMC driver now supports OPPs and DVFS. Tested-by: Nicolas Chauvet Acked-by: Georgi Djakov Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20201228154920.18846-4-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski