kernel/linux.git/drivers/memory/tegra, branch v5.15.7

memory: tegra20-emc: Add runtime dependency on devfreq governor module

2021-11-25T08:48:30+00:00

[ Upstream commit 14b43c20c283de36131da0cb44f3170b9ffa7630 ] Tegra20 EMC driver uses simple devfreq governor. Add simple devfreq governor to the list of the Tegra20 EMC driver module softdeps to allow userspace initramfs tools like dracut to automatically pull the devfreq module into ramfs image together with the EMC module. Reported-by: Nicolas Chauvet Suggested-by: Nicolas Chauvet Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20211019231524.888-1-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin

memory: tegra: fix unused-function warning

2021-07-23T06:25:34+00:00

The tegra186_mc_client_sid_override() is only called from an #ifdef block: drivers/memory/tegra/tegra186.c:74:13: error: 'tegra186_mc_client_sid_override' defined but not used [-Werror=unused-function] 74 | static void tegra186_mc_client_sid_override(struct tegra_mc *mc, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Add another #ifdef around the called function. Fixes: 393d66fd2cac ("memory: tegra: Implement SID override programming") Signed-off-by: Arnd Bergmann Acked-by: Jon Hunter Link: https://lore.kernel.org/r/20210722090748.1157470-1-arnd@kernel.org Signed-off-by: Krzysztof Kozlowski

memory: tegra: Delete dead debugfs checking code

2021-06-10T07:18:15+00:00

The debugfs_create_dir() function does not return NULL, it returns error pointers. But in normal situations like this where the caller is not dereferencing "emc->debugfs.root" then we are not supposed to check the return. So instead of fixing these checks, we should delete them. Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/YMCQDTSyG8UuQoh0@mwanda Signed-off-by: Krzysztof Kozlowski

memory: tegra: Implement SID override programming

2021-06-03T19:50:43+00:00

Instead of programming all SID overrides during early boot, perform the operation on-demand after the SMMU translations have been set up for a device. This reuses data from device tree to match memory clients for a device and programs the SID specified in device tree, which corresponds to the SID used for the SMMU context banks for the device. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210603164632.1000458-2-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Split Tegra194 data into separate file

2021-06-03T19:49:41+00:00

Keep the directory structure consistent by splitting the Tegra194 data into a separate file. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-13-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Add memory client IDs to tables

2021-06-03T19:49:41+00:00

The memory client IDs will subsequently be used to program override SIDs for the given clients depending on the device tree configuration. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-12-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Unify drivers

2021-06-03T19:49:41+00:00

The Tegra210 (and earlier) driver now supports all the functionality that the Tegra186 (and later) driver does, so they can be unified. Note that previously the Tegra186 (and later) driver could be unloaded, even if that was perhaps not very useful. Older chips don't support that yet, but once they do this code can be reenabled. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-11-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Only initialize reset controller if available

2021-06-03T19:49:41+00:00

The memory controller hot resets are implemented in the BPMP on Tegra186 and later, so there's no need to provide an implementation via the memory controller driver. Conditionally register the reset controller only if needed. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-10-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Make IRQ support opitonal

2021-06-03T19:49:41+00:00

Make IRQ support optional to help unify the Tegra186 memory controller driver with this one. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-9-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski

memory: tegra: Parameterize interrupt handler

2021-06-03T19:49:41+00:00

Tegra20 requires a slightly different interrupt handler than Tegra30 and later, so parameterize the handler, so that each SoC implementation can provide its own. Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20210602163302.120041-8-thierry.reding@gmail.com Signed-off-by: Krzysztof Kozlowski