Introduce device tree bindings for a new power sequencer provider dedicated to the T-HEAD TH1520 SoC's GPU.
The thead,th1520-gpu-pwrseq compatible designates a node that will manage the complex power-up and power-down sequence for the GPU. This sequencer requires a handle to the GPU's clock generator reset line (gpu-clkgen), which is specified in its device tree node. This binding will be used by a new pwrseq driver to abstract the SoC specific power management details from the generic GPU driver. Signed-off-by: Michal Wilczynski <[email protected]> --- .../bindings/power/thead,th1520-pwrseq.yaml | 42 ++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 43 insertions(+) diff --git a/Documentation/devicetree/bindings/power/thead,th1520-pwrseq.yaml b/Documentation/devicetree/bindings/power/thead,th1520-pwrseq.yaml new file mode 100644 index 0000000000000000000000000000000000000000..4c302abfb76fb9e243946f4eefa333c6b02e59d3 --- /dev/null +++ b/Documentation/devicetree/bindings/power/thead,th1520-pwrseq.yaml @@ -0,0 +1,42 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/thead,th1520-pwrseq.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: T-HEAD TH1520 GPU Power Sequencer + +maintainers: + - Michal Wilczynski <[email protected]> + +description: | + This binding describes the power sequencer for the T-HEAD TH1520 GPU. + This sequencer handles the specific power-up and power-down sequences + required by the GPU, including managing clocks and resets from both the + sequencer and the GPU device itself. + +properties: + compatible: + const: thead,th1520-gpu-pwrseq + + resets: + description: A phandle to the GPU clock generator reset. + maxItems: 1 + + reset-names: + const: gpu-clkgen + +required: + - compatible + - resets + - reset-names + +additionalProperties: false + +examples: + - | + gpu_pwrseq: pwrseq { + compatible = "thead,th1520-gpu-pwrseq"; + resets = <&rst 0>; + reset-names = "gpu-clkgen"; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 0d59a5910e632350a4d72a761c6c5ce1d3a1bc34..78e3067df1152929de638244b03264733d08556e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -21355,6 +21355,7 @@ F: Documentation/devicetree/bindings/firmware/thead,th1520-aon.yaml F: Documentation/devicetree/bindings/mailbox/thead,th1520-mbox.yaml F: Documentation/devicetree/bindings/net/thead,th1520-gmac.yaml F: Documentation/devicetree/bindings/pinctrl/thead,th1520-pinctrl.yaml +F: Documentation/devicetree/bindings/power/thead,th1520-pwrseq.yaml F: Documentation/devicetree/bindings/reset/thead,th1520-reset.yaml F: arch/riscv/boot/dts/thead/ F: drivers/clk/thead/clk-th1520-ap.c -- 2.34.1
