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| author | Ashish Mhetre <amhetre@nvidia.com> | 2023-11-07 16:57:12 +0530 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2023-11-21 10:09:28 +0100 |
| commit | fe3b082a6eb8b1526ed7397c849d6b2a6baeb6a1 (patch) | |
| tree | dd08b498edd1a3c74d750d73a44cdc07b7dae9af /drivers/memory | |
| parent | b85ea95d086471afb4ad062012a4d73cd328fa86 (diff) | |
| download | linux-fe3b082a6eb8b1526ed7397c849d6b2a6baeb6a1.tar.gz | |
memory: tegra: Add SID override programming for MC clients
For some devices the bootloader/firmware may set up the device in
bypass. Memory clients like display needs kernel to program SID after
resume because bootloader/firmware programs the SID of display device to
bypass. In order to make sure that kernel IOMMU mappings for these
devices work after resume, add SID override programming support for all
memory clients on memory controller resume.
This partially reverts 'commit ef86b2c2807f ("memory: tegra: Remove
clients SID override programming")'
Signed-off-by: Ashish Mhetre <amhetre@nvidia.com>
Link: https://lore.kernel.org/r/20231107112713.21399-1-amhetre@nvidia.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Diffstat (limited to 'drivers/memory')
| -rw-r--r-- | drivers/memory/tegra/tegra186.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/memory/tegra/tegra186.c b/drivers/memory/tegra/tegra186.c index 533f85a4b2bdb7..8203f0db1350bd 100644 --- a/drivers/memory/tegra/tegra186.c +++ b/drivers/memory/tegra/tegra186.c @@ -136,9 +136,23 @@ static int tegra186_mc_probe_device(struct tegra_mc *mc, struct device *dev) return 0; } +static int tegra186_mc_resume(struct tegra_mc *mc) +{ + unsigned int i; + + for (i = 0; i < mc->soc->num_clients; i++) { + const struct tegra_mc_client *client = &mc->soc->clients[i]; + + tegra186_mc_client_sid_override(mc, client, client->sid); + } + + return 0; +} + const struct tegra_mc_ops tegra186_mc_ops = { .probe = tegra186_mc_probe, .remove = tegra186_mc_remove, + .resume = tegra186_mc_resume, .probe_device = tegra186_mc_probe_device, .handle_irq = tegra30_mc_handle_irq, }; |