Enabling the GPU power domain requires that the GPU regulator is
enabled. The regulator is enabled at boot time, but gets disabled
automatically when there are no users.
This means the system might run into a failure state hanging the
whole system for the following use cases:
* if the GPU driver is being probed late (e.g. build as a
module and firmware is not in initramfs), the regulator
might already have been disabled. In that case the power
domain is enabled before the regulator.
* unbinding the GPU driver will disable the PM domain and
the regulator. When the driver is bound again, the PM
domain will be enabled before the regulator and error
appears.
Avoid this by adding an explicit regulator dependency to the
power domain.
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reported-by: Adrián Martínez Larumbe <adrian.larumbe@collabora.com>
Tested-by: Adrian Larumbe <adrian.larumbe@collabora.com> # On Rock 5B
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20250220-rk3588-gpu-pwr-domain-regulator-v6-8-a4f9c24e5b81@kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Radxa Rock 5C supports both CRU-based (default) and PMIC-based reset
upon thermal runaway conditions. The former resets the SoC by internally
poking the CRU from TSADC, while the latter power-cycles the whole board
by pulling the PMIC reset line low in case of uncontrolled overheating.
Switch to a PMIC-based reset, as the more 'thorough' of the two.
Tested by temporarily setting rockchip,hw-tshut-temp to 65C to simulate
overheating - this causes the board to reset when any of the on-chip
temperature sensors surpasses the tshut temperature.
Requires Alexander's patch [1] fixing TSADC pinctrl assignment
[1] https://lore.kernel.org/r/20250130053849.4902-1-eagle.alexander923@gmail.com
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Link: https://lore.kernel.org/r/20250204-rock-5c-tshut-v1-1-33301e4eef64@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The hdptxphy is a combo transmit-PHY for HDMI2.1 TMDS Link, FRL Link, DP
and eDP Link. Therefore, it is better to name it hdptxphy0 other than
hdptxphy_hdmi0, which will be referenced by both hdmi0 and edp0 nodes.
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://lore.kernel.org/r/20250206030330.680424-3-damon.ding@rock-chips.com
[added armsom-sige7, where hdmi-support was added recently and also
the hdptxphy0-as-dclk source I just added]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add the necessary cooling map to enable the kernel's thermal subsystem
to manage the fan speed automatically depending on the overall SoC
package temperature on Radxa Rock 5C
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Link: https://lore.kernel.org/r/20250120-rock-5c-fan-v1-2-5fb8446c981b@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Radxa Heatsink 6540B, which is the official cooling accessory for the
Rock 5C board, includes a small 5V fan, which in my testing spins up
reliably at a PWM setting of 24 (out of 255). It is also quite loud
at the current minimum setting of 64, and noticeably less so at 24.
Introduce two intermediate PWM states at the lower end of the fan's
operating range to enable better balance between noise and cooling.
Note further that, in my testing, having the fan run at 44 is enough
to keep the system from thermal throttling with sustained 100% load
on its 8 CPU cores (in 22C ambient temperature and no case)
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Acked-by: Dragan Simic <dsimic@manjaro.org>
Link: https://lore.kernel.org/r/20250120-rock-5c-fan-v1-1-5fb8446c981b@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Radxa ROCK 5C is a 8K computer for everything[1] using the Rockchip
RK3588S2 chip:
- Rockchip RK3588S2
- Quad A76 and Quad A55 CPU
- 6 TOPS NPU
- up to 32GB LPDDR4x RAM
- eMMC / SPI flash connector
- Micro SD Card slot
- Gigabit ethernet port (supports PoE with add-on PoE HAT)
- WiFi6 / BT5.4
- 1x USB 3.0 Type-A HOST port
- 1x USB 3.0 Type-A OTG port
- 2x USB 2.0 Type-A HOST port
- 1x USB Type-C 5V power port
[1] https://radxa.com/products/rock5/5c
Signed-off-by: FUKAUMI Naoki <naoki@radxa.com>
Link: https://lore.kernel.org/r/20241021090548.1052-2-naoki@radxa.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
