memory: tegra: Add system sleep support (177602b0) · Commits · 戴 / test

Add system suspend/resume support for the memory controller found on Tegra186 and later. This is required so that the SID registers can be reprogrammed after their content was lost during system sleep. Signed-off-by:

Thierry Reding <treding@nvidia.com>

drivers/memory/tegra/tegra186.c

+19 −0

Original line number	Diff line number	Diff line
		@@ -602,10 +602,29 @@ static const struct of_device_id tegra186_mc_of_match[] = {
		};
		MODULE_DEVICE_TABLE(of, tegra186_mc_of_match);

		static int tegra186_mc_suspend(struct device *dev)
		{
		return 0;
		}

		static int tegra186_mc_resume(struct device *dev)
		{
		struct tegra186_mc *mc = dev_get_drvdata(dev);

		tegra186_mc_program_sid(mc);

		return 0;
		}

		static const struct dev_pm_ops tegra186_mc_pm_ops = {
		SET_SYSTEM_SLEEP_PM_OPS(tegra186_mc_suspend, tegra186_mc_resume)
		};

		static struct platform_driver tegra186_mc_driver = {
		.driver = {
		.name = "tegra186-mc",
		.of_match_table = tegra186_mc_of_match,
		.pm = &tegra186_mc_pm_ops,
		.suppress_bind_attrs = true,
		},
		.prevent_deferred_probe = true,

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