kernel/linux.git/drivers/soc/tegra, branch master

soc/tegra: pmc: Add IO pads for Tegra264

2026-03-28T00:02:39+00:00

Populate the IO pads and pins for Tegra264. Tegra264 has internal 1.8V and 0.6V regulators that must be enabled when selecting the 1.8V mode for the sdmmc1-hv IO pad. To support this a new 'ena_1v8' member is added to the 'tegra_io_pad_vctrl' structure to populate the bits that need to be set to enable these internal regulators. Although this is enabling 1.8V (bit 1) and 0.6V (bit 2) regulators, it is simply called 'ena_1v8' because these are both enabled for 1.8V operation. Note that these internal regulators are disabled when not using 1.8V mode. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Rename has_impl_33v_pwr flag

2026-03-28T00:02:39+00:00

The flag 'has_impl_33v_pwr' is now only used to determine if we need to set the write-enable bit before we can set the bit to select if 3.3V IO is used or not. Therefore, rename the flag to 'has_io_pad_wren' to indicate that the SoC supports the write-enable register. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Refactor IO pad voltage control

2026-03-28T00:02:39+00:00

For Tegra devices, only a subset of IO pads can be configured for 1.8V or 3.3V. Therefore, in the 'tegra_io_pad_soc' structure for Tegra SoCs either all or most of the 'voltage' entries are set to UINT_MAX to indicate the IO pad voltage cannot be configured. So for the majority of IO pads this configuration is not applicable. However, refactoring the IO pad data to move this parameter into a separate structure does not make sense because the benefits are marginal. Support for the Tegra264 IO pads is currently missing and the control for configuring the voltage for the IO pads for Tegra264 has changed. Instead of having a single register that is used for setting the IO pad voltage for all IO pads, there is now a register associated with the specific IO pad. For Tegra264, there is now only one IO pad that can be configured for 1.8V or 3.3V which is the sdmmc1-hv. While we could make this work with by adding a new SoC flag, the implementation will be a bit cumbersome. Therefore, it now seems reasonable to refactor the IO pad code. Hence, introduce a new 'tegra_io_pad_vctrl' structure that contains the register offset and bit for enabling/disabling 3.3V mode and move the existing voltage control data for supported SoCs to this structure. This has an added benefit of simplifying the code in the functions tegra_io_pad_get_voltage and tegra_io_pad_set_voltage. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Add Tegra264 wake events

2026-03-28T00:02:39+00:00

Populate the various wake events for the Tegra264 device. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Add AOWAKE regs for Tegra264

2026-03-28T00:02:39+00:00

Populate the AOWAKE register offsets for Tegra264. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Add support for SoC specific AOWAKE offsets

2026-03-28T00:02:39+00:00

For Tegra264, some of the AOWAKE registers have different register offsets. Prepare for adding the Tegra264 AOWAKE register by moving the offsets for the AOWAKE registers that are different for Tegra264 into the 'tegra_pmc_regs' structure and populate these offsets for the SoCs that support these registers. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Remove unused AOWAKE definitions

2026-03-28T00:02:39+00:00

For Tegra264, the offsets for the AOWAKE registers have changed. Before adding support for the Tegra264 AOWAKE register offsets, remove the unused AOWAKE definitions. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Add kerneldoc for wake-up variables

2026-03-28T00:02:38+00:00

Commit e6d96073af68 ("soc/tegra: pmc: Fix unsafe generic_handle_irq() call") added the variables 'wake_work' and 'wake_status' to the 'tegra_pmc' structure but did not add the associated kerneldoc for these new variables. Add the kerneldoc for these variables. Fixes: e6d96073af68 ("soc/tegra: pmc: Fix unsafe generic_handle_irq() call") Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Correct function names in kerneldoc

2026-03-28T00:02:38+00:00

Commit 70f752ebb08c ("soc/tegra: pmc: Add PMC contextual functions") added the functions devm_tegra_pmc_get() and tegra_pmc_io_pad_power_enable(), but the names of the functions in the associated kerneldoc is incorrect. Update the kerneldoc for these functions to correct their names. Fixes: 70f752ebb08c ("soc/tegra: pmc: Add PMC contextual functions") Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: pmc: Add kerneldoc for reboot notifier

2026-03-28T00:02:38+00:00

Commit 48b7f802fb78 ("soc/tegra: pmc: Embed reboot notifier in PMC context") added the reboot_notifier structure to the PMC SoC structure but did not update the kerneldoc accordingly. Add this missing kerneldoc description to fix this. Fixes: 48b7f802fb78 ("soc/tegra: pmc: Embed reboot notifier in PMC context") Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding