From: Taniya Das Date: Wed, 7 Jan 2026 09:43:10 +0000 (+0530) Subject: dt-bindings: clock: qcom: document the Kaanapali GPU Clock Controller X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ecc3adefa72748845c63d32e97c56f65560f30ad;p=thirdparty%2Flinux.git dt-bindings: clock: qcom: document the Kaanapali GPU Clock Controller Qualcomm GX(graphics) is a clock controller which has PLLs, clocks and Power domains (GDSC), but the requirement from the SW driver is to use the GDSC power domain from the clock controller to recover the GPU firmware in case of any failure/hangs. The rest of the resources of the clock controller are being used by the firmware of GPU. This module exposes the GDSC power domains which helps the recovery of Graphics subsystem. Add bindings documentation for the Kaanapali Graphics Clock and Graphics power domain Controller for Kaanapali SoC. Signed-off-by: Jingyi Wang Reviewed-by: Bryan O'Donoghue Signed-off-by: Taniya Das Link: https://lore.kernel.org/r/20260107-kaanapali-mmcc-v3-v3-7-8e10adc236a8@oss.qualcomm.com Signed-off-by: Bjorn Andersson --- diff --git a/Documentation/devicetree/bindings/clock/qcom,kaanapali-gxclkctl.yaml b/Documentation/devicetree/bindings/clock/qcom,kaanapali-gxclkctl.yaml new file mode 100644 index 000000000000..5490a975f3db --- /dev/null +++ b/Documentation/devicetree/bindings/clock/qcom,kaanapali-gxclkctl.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/qcom,kaanapali-gxclkctl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Graphics power domain Controller on Kaanapali + +maintainers: + - Taniya Das + +description: | + Qualcomm GX(graphics) is a clock controller which has PLLs, clocks and + Power domains (GDSC). This module provides the power domains control + of gxclkctl on Qualcomm SoCs which helps the recovery of Graphics subsystem. + + See also: + include/dt-bindings/clock/qcom,kaanapali-gxclkctl.h + +properties: + compatible: + enum: + - qcom,kaanapali-gxclkctl + + power-domains: + description: + Power domains required for the clock controller to operate + items: + - description: GFX power domain + - description: GMXC power domain + - description: GPUCC(CX) power domain + + '#power-domain-cells': + const: 1 + + reg: + maxItems: 1 + +required: + - compatible + - reg + - power-domains + - '#power-domain-cells' + +unevaluatedProperties: false + +examples: + - | + #include + soc { + #address-cells = <2>; + #size-cells = <2>; + + clock-controller@3d64000 { + compatible = "qcom,kaanapali-gxclkctl"; + reg = <0x0 0x03d64000 0x0 0x6000>; + power-domains = <&rpmhpd RPMHPD_GFX>, + <&rpmhpd RPMHPD_GMXC>, + <&gpucc 0>; + #power-domain-cells = <1>; + }; + }; +... diff --git a/Documentation/devicetree/bindings/clock/qcom,sm8450-gpucc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm8450-gpucc.yaml index 44380f6f8136..6feaa32569f9 100644 --- a/Documentation/devicetree/bindings/clock/qcom,sm8450-gpucc.yaml +++ b/Documentation/devicetree/bindings/clock/qcom,sm8450-gpucc.yaml @@ -14,6 +14,7 @@ description: | domains on Qualcomm SoCs. See also:: + include/dt-bindings/clock/qcom,kaanapali-gpucc.h include/dt-bindings/clock/qcom,milos-gpucc.h include/dt-bindings/clock/qcom,sar2130p-gpucc.h include/dt-bindings/clock/qcom,sm4450-gpucc.h @@ -26,6 +27,7 @@ description: | properties: compatible: enum: + - qcom,kaanapali-gpucc - qcom,milos-gpucc - qcom,sar2130p-gpucc - qcom,sm4450-gpucc diff --git a/include/dt-bindings/clock/qcom,kaanapali-gpucc.h b/include/dt-bindings/clock/qcom,kaanapali-gpucc.h new file mode 100644 index 000000000000..e8dc2009c71b --- /dev/null +++ b/include/dt-bindings/clock/qcom,kaanapali-gpucc.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +#ifndef _DT_BINDINGS_CLK_QCOM_GPU_CC_KAANAPALI_H +#define _DT_BINDINGS_CLK_QCOM_GPU_CC_KAANAPALI_H + +/* GPU_CC clocks */ +#define GPU_CC_AHB_CLK 0 +#define GPU_CC_CB_CLK 1 +#define GPU_CC_CX_ACCU_SHIFT_CLK 2 +#define GPU_CC_CX_GMU_CLK 3 +#define GPU_CC_CXO_AON_CLK 4 +#define GPU_CC_CXO_CLK 5 +#define GPU_CC_DEMET_CLK 6 +#define GPU_CC_DPM_CLK 7 +#define GPU_CC_FF_CLK_SRC 8 +#define GPU_CC_FREQ_MEASURE_CLK 9 +#define GPU_CC_GMU_CLK_SRC 10 +#define GPU_CC_GPU_SMMU_VOTE_CLK 11 +#define GPU_CC_GX_ACCU_SHIFT_CLK 12 +#define GPU_CC_GX_GMU_CLK 13 +#define GPU_CC_HUB_AON_CLK 14 +#define GPU_CC_HUB_CLK_SRC 15 +#define GPU_CC_HUB_CX_INT_CLK 16 +#define GPU_CC_HUB_DIV_CLK_SRC 17 +#define GPU_CC_MEMNOC_GFX_CLK 18 +#define GPU_CC_PLL0 19 +#define GPU_CC_PLL0_OUT_EVEN 20 +#define GPU_CC_RSCC_HUB_AON_CLK 21 +#define GPU_CC_RSCC_XO_AON_CLK 22 +#define GPU_CC_SLEEP_CLK 23 + +/* GPU_CC power domains */ +#define GPU_CC_CX_GDSC 0 + +/* GPU_CC resets */ +#define GPU_CC_CB_BCR 0 +#define GPU_CC_CX_BCR 1 +#define GPU_CC_FAST_HUB_BCR 2 +#define GPU_CC_FF_BCR 3 +#define GPU_CC_GMU_BCR 4 +#define GPU_CC_GX_BCR 5 +#define GPU_CC_XO_BCR 6 + +#endif diff --git a/include/dt-bindings/clock/qcom,kaanapali-gxclkctl.h b/include/dt-bindings/clock/qcom,kaanapali-gxclkctl.h new file mode 100644 index 000000000000..f32dade67cf2 --- /dev/null +++ b/include/dt-bindings/clock/qcom,kaanapali-gxclkctl.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +#ifndef _DT_BINDINGS_CLK_QCOM_GX_CLKCTL_KAANAPALI_H +#define _DT_BINDINGS_CLK_QCOM_GX_CLKCTL_KAANAPALI_H + +/* GX_CLKCTL power domains */ +#define GX_CLKCTL_GX_GDSC 0 +#define GX_CLKCTL_GX_SLICE_GDSC 1 + +#endif