power: domain: Add Rockchip RK3576 power domain driver #18
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alchark
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Jan 20, 2026
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What are the users of it? I don't seem to recall anything we needed in U-boot which wasn't available due to a power domain being off at boot.
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There was some peripherals that has power domain requirement. It can operate without it. For now it's an optional driver.
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Let's keep the complexity down. If we don't have an immediate need for something, let's not spend time on enabling it
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Add a power domain driver for the Rockchip RK3576 SoC, ported from the Linux kernel driver. This enables U-Boot to control power domains for peripherals like USB, GPU, NPU, video encoders/decoders, etc. The driver implements: - Power domain on/off control via PMU registers - Bus idle request/acknowledge handshaking - Clock ungating during power transitions - Domain status checking via repair status or idle status registers Supported power domains (matching dt-bindings/power/rockchip,rk3576-power.h): - RK3576_PD_NPU, RK3576_PD_NPUTOP, RK3576_PD_NPU0, RK3576_PD_NPU1 - RK3576_PD_NVM, RK3576_PD_SDGMAC, RK3576_PD_AUDIO - RK3576_PD_PHP, RK3576_PD_SUBPHP - RK3576_PD_VOP, RK3576_PD_VO0, RK3576_PD_VO1 - RK3576_PD_USB, RK3576_PD_VI - RK3576_PD_VEPU0, RK3576_PD_VEPU1, RK3576_PD_VDEC, RK3576_PD_VPU - RK3576_PD_GPU The power sequence follows the hardware requirements: 1. Ungate clocks for the domain 2. Set power control register (0 = on, 1 = off) 3. Wait for power state via repair status polling 4. Set/clear bus idle request 5. Wait for idle acknowledge and status 6. Re-gate clocks This driver is required for enabling peripherals on RK3576 platforms that have their power domains disabled by default or by firmware. Change-Id: c5659beb-c1ef-4a41-8972-66c9a4bd123d Signed-off-by: Anton Burticica <mouse@ya.ru>
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Add a power domain driver for the Rockchip RK3576 SoC, ported from the Linux kernel driver. This enables U-Boot to control power domains for peripherals like USB, GPU, NPU, video encoders/decoders, etc.
The driver implements:
Supported power domains (matching dt-bindings/power/rockchip,rk3576-power.h):
The power sequence follows the hardware requirements:
This driver is required for enabling peripherals on RK3576 platforms that have their power domains disabled by default or by firmware.
Change-Id: c5659beb-c1ef-4a41-8972-66c9a4bd123d