Add dt-schema documentation for the Exynos990 SoC CMU. This clock management unit has a topmost block (CMU_TOP) that generates top clocks for other blocks. Currently the only other block implemented is CMU_HSI0, which provides clocks for the USB part of the SoC. Also, device-tree binding definitions added for these blocks: - CMU_TOP - CMU_HSI0 Signed-off-by: Igor Belwon <igor.belwon@xxxxxxxxxxxxxxxxxxxxxxxxxx> --- .../bindings/clock/samsung,exynos990-clock.yaml | 120 +++++++++++ include/dt-bindings/clock/samsung,exynos990.h | 236 +++++++++++++++++++++ 2 files changed, 356 insertions(+) diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml new file mode 100644 index 0000000000000000000000000000000000000000..c91a1631b1fc8cfaade46b0509852e0cbcf111f8 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml @@ -0,0 +1,120 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/samsung,exynos990-clock.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung Exynos990 SoC clock controller + +maintainers: + - Igor Belwon <igor.belwon@xxxxxxxxxxxxxxxxxxxxxxxxxx> + - Chanwoo Choi <cw00.choi@xxxxxxxxxxx> + - Krzysztof Kozlowski <krzk@xxxxxxxxxx> + +description: | + Exynos990 clock controller is comprised of several CMU units, generating + clocks for different domains. Those CMU units are modeled as separate device + tree nodes, and might depend on each other. The root clock in that root tree + is an external clock: OSCCLK (26 MHz). This external clock must be defined + as a fixed-rate clock in dts. + + CMU_TOP is a top-level CMU, where all base clocks are prepared using PLLs and + dividers; all other clocks of function blocks (other CMUs) are usually + derived from CMU_TOP. + + Each clock is assigned an identifier and client nodes can use this identifier + to specify the clock which they consume. All clocks available for usage + in clock consumer nodes are defined as preprocessor macros in + 'include/dt-bindings/clock/samsung,exynos990.h' header. + +properties: + compatible: + enum: + - samsung,exynos990-cmu-hsi0 + - samsung,exynos990-cmu-top + + clocks: + minItems: 1 + maxItems: 5 + + clock-names: + minItems: 1 + maxItems: 5 + + "#clock-cells": + const: 1 + + reg: + maxItems: 1 + +required: + - compatible + - clocks + - clock-names + - "#clock-cells" + - reg + +allOf: + - if: + properties: + compatible: + contains: + const: samsung,exynos990-cmu-hsi0 + + then: + properties: + clocks: + items: + - description: External reference clock (26 MHz) + - description: CMU_HSI0 BUS clock (from CMU_TOP) + - description: CMU_HSI0 USB31DRD clock (from CMU_TOP) + - description: CMU_HSI0 USBDP_DEBUG clock (from CMU_TOP) + - description: CMU_HSI0 DPGTC clock (from CMU_TOP) + + clock-names: + items: + - const: oscclk + - const: bus + - const: usb31drd + - const: usbdp_debug + - const: dpgtc + + - if: + properties: + compatible: + contains: + const: samsung,exynos990-cmu-top + + then: + properties: + clocks: + items: + - description: External reference clock (26 MHz) + + clock-names: + items: + - const: oscclk + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/samsung,exynos990.h> + + cmu_hsi0: clock-controller@10a00000 { + compatible = "samsung,exynos990-cmu-hsi0"; + reg = <0x10a00000 0x8000>; + #clock-cells = <1>; + + clocks = <&oscclk>, + <&cmu_top CLK_DOUT_CMU_HSI0_BUS>, + <&cmu_top CLK_DOUT_CMU_HSI0_USB31DRD>, + <&cmu_top CLK_DOUT_CMU_HSI0_USBDP_DEBUG>, + <&cmu_top CLK_DOUT_CMU_HSI0_DPGTC>; + clock-names = "oscclk", "bus", + "usb31drd", + "usbdp_debug", + "dpgtc"; + }; + +... diff --git a/include/dt-bindings/clock/samsung,exynos990.h b/include/dt-bindings/clock/samsung,exynos990.h new file mode 100644 index 0000000000000000000000000000000000000000..307215a3f3eddd579e6733b51a777fb45398bb92 --- /dev/null +++ b/include/dt-bindings/clock/samsung,exynos990.h @@ -0,0 +1,236 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * Copyright (C) 2024 Igor Belwon <igor.belwon@xxxxxxxxxxxxxxxxxxxxxxxxxx> + * + * Device Tree binding constants for Exynos990 clock controller. + */ + +#ifndef _DT_BINDINGS_CLOCK_EXYNOS_990_H +#define _DT_BINDINGS_CLOCK_EXYNOS_990_H + +/* CMU_TOP */ +#define CLK_FOUT_SHARED0_PLL 1 +#define CLK_FOUT_SHARED1_PLL 2 +#define CLK_FOUT_SHARED2_PLL 3 +#define CLK_FOUT_SHARED3_PLL 4 +#define CLK_FOUT_SHARED4_PLL 5 +#define CLK_FOUT_G3D_PLL 6 +#define CLK_FOUT_MMC_PLL 7 +#define CLK_MOUT_PLL_SHARED0 8 +#define CLK_MOUT_PLL_SHARED1 9 +#define CLK_MOUT_PLL_SHARED2 10 +#define CLK_MOUT_PLL_SHARED3 11 +#define CLK_MOUT_PLL_SHARED4 12 +#define CLK_MOUT_PLL_MMC 13 +#define CLK_MOUT_PLL_G3D 14 +#define CLK_MOUT_CMU_APM_BUS 15 +#define CLK_MOUT_CMU_AUD_CPU 16 +#define CLK_MOUT_CMU_BUS0_BUS 17 +#define CLK_MOUT_CMU_BUS1_BUS 18 +#define CLK_MOUT_CMU_BUS1_SSS 19 +#define CLK_MOUT_CMU_CIS_CLK0 20 +#define CLK_MOUT_CMU_CIS_CLK1 21 +#define CLK_MOUT_CMU_CIS_CLK2 22 +#define CLK_MOUT_CMU_CIS_CLK3 23 +#define CLK_MOUT_CMU_CIS_CLK4 24 +#define CLK_MOUT_CMU_CIS_CLK5 25 +#define CLK_MOUT_CMU_CMU_BOOST 26 +#define CLK_MOUT_CMU_CORE_BUS 27 +#define CLK_MOUT_CMU_CPUCL0_DBG_BUS 28 +#define CLK_MOUT_CMU_CPUCL0_SWITCH 29 +#define CLK_MOUT_CMU_CPUCL1_SWITCH 30 +#define CLK_MOUT_CMU_CPUCL2_BUSP 31 +#define CLK_MOUT_CMU_CPUCL2_SWITCH 32 +#define CLK_MOUT_CMU_CSIS_BUS 33 +#define CLK_MOUT_CMU_CSIS_OIS_MCU 34 +#define CLK_MOUT_CMU_DNC_BUS 35 +#define CLK_MOUT_CMU_DNC_BUSM 36 +#define CLK_MOUT_CMU_DNS_BUS 37 +#define CLK_MOUT_CMU_DPU 38 +#define CLK_MOUT_CMU_DPU_ALT 39 +#define CLK_MOUT_CMU_DSP_BUS 40 +#define CLK_MOUT_CMU_G2D_G2D 41 +#define CLK_MOUT_CMU_G2D_MSCL 42 +#define CLK_MOUT_CMU_HPM 43 +#define CLK_MOUT_CMU_HSI0_BUS 44 +#define CLK_MOUT_CMU_HSI0_DPGTC 45 +#define CLK_MOUT_CMU_HSI0_USB31DRD 46 +#define CLK_MOUT_CMU_HSI0_USBDP_DEBUG 47 +#define CLK_MOUT_CMU_HSI1_BUS 48 +#define CLK_MOUT_CMU_HSI1_MMC_CARD 49 +#define CLK_MOUT_CMU_HSI1_PCIE 50 +#define CLK_MOUT_CMU_HSI1_UFS_CARD 51 +#define CLK_MOUT_CMU_HSI1_UFS_EMBD 52 +#define CLK_MOUT_CMU_HSI2_BUS 53 +#define CLK_MOUT_CMU_HSI2_PCIE 54 +#define CLK_MOUT_CMU_IPP_BUS 55 +#define CLK_MOUT_CMU_ITP_BUS 56 +#define CLK_MOUT_CMU_MCSC_BUS 57 +#define CLK_MOUT_CMU_MCSC_GDC 58 +#define CLK_MOUT_CMU_CMU_BOOST_CPU 59 +#define CLK_MOUT_CMU_MFC0_MFC0 60 +#define CLK_MOUT_CMU_MFC0_WFD 61 +#define CLK_MOUT_CMU_MIF_BUSP 62 +#define CLK_MOUT_CMU_MIF_SWITCH 63 +#define CLK_MOUT_CMU_NPU_BUS 64 +#define CLK_MOUT_CMU_PERIC0_BUS 65 +#define CLK_MOUT_CMU_PERIC0_IP 66 +#define CLK_MOUT_CMU_PERIC1_BUS 67 +#define CLK_MOUT_CMU_PERIC1_IP 68 +#define CLK_MOUT_CMU_PERIS_BUS 69 +#define CLK_MOUT_CMU_SSP_BUS 70 +#define CLK_MOUT_CMU_TNR_BUS 71 +#define CLK_MOUT_CMU_VRA_BUS 72 +#define CLK_DOUT_CMU_APM_BUS 73 +#define CLK_DOUT_CMU_AUD_CPU 74 +#define CLK_DOUT_CMU_BUS0_BUS 75 +#define CLK_DOUT_CMU_BUS1_BUS 76 +#define CLK_DOUT_CMU_BUS1_SSS 77 +#define CLK_DOUT_CMU_CIS_CLK0 78 +#define CLK_DOUT_CMU_CIS_CLK1 79 +#define CLK_DOUT_CMU_CIS_CLK2 80 +#define CLK_DOUT_CMU_CIS_CLK3 81 +#define CLK_DOUT_CMU_CIS_CLK4 82 +#define CLK_DOUT_CMU_CIS_CLK5 83 +#define CLK_DOUT_CMU_CMU_BOOST 84 +#define CLK_DOUT_CMU_CORE_BUS 85 +#define CLK_DOUT_CMU_CPUCL0_DBG_BUS 86 +#define CLK_DOUT_CMU_CPUCL0_SWITCH 87 +#define CLK_DOUT_CMU_CPUCL1_SWITCH 88 +#define CLK_DOUT_CMU_CPUCL2_BUSP 89 +#define CLK_DOUT_CMU_CPUCL2_SWITCH 90 +#define CLK_DOUT_CMU_CSIS_BUS 91 +#define CLK_DOUT_CMU_CSIS_OIS_MCU 92 +#define CLK_DOUT_CMU_DNC_BUS 93 +#define CLK_DOUT_CMU_DNC_BUSM 94 +#define CLK_DOUT_CMU_DNS_BUS 95 +#define CLK_DOUT_CMU_DSP_BUS 96 +#define CLK_DOUT_CMU_G2D_G2D 97 +#define CLK_DOUT_CMU_G2D_MSCL 98 +#define CLK_DOUT_CMU_G3D_SWITCH 99 +#define CLK_DOUT_CMU_HPM 100 +#define CLK_DOUT_CMU_HSI0_BUS 101 +#define CLK_DOUT_CMU_HSI0_DPGTC 102 +#define CLK_DOUT_CMU_HSI0_USB31DRD 103 +#define CLK_DOUT_CMU_HSI0_USBDP_DEBUG 104 +#define CLK_DOUT_CMU_HSI1_BUS 105 +#define CLK_DOUT_CMU_HSI1_MMC_CARD 106 +#define CLK_DOUT_CMU_HSI1_PCIE 107 +#define CLK_DOUT_CMU_HSI1_UFS_CARD 108 +#define CLK_DOUT_CMU_HSI1_UFS_EMBD 109 +#define CLK_DOUT_CMU_HSI2_BUS 110 +#define CLK_DOUT_CMU_HSI2_PCIE 111 +#define CLK_DOUT_CMU_IPP_BUS 112 +#define CLK_DOUT_CMU_ITP_BUS 113 +#define CLK_DOUT_CMU_MCSC_BUS 114 +#define CLK_DOUT_CMU_MCSC_GDC 115 +#define CLK_DOUT_CMU_CMU_BOOST_CPU 116 +#define CLK_DOUT_CMU_MFC0_MFC0 117 +#define CLK_DOUT_CMU_MFC0_WFD 118 +#define CLK_DOUT_CMU_MIF_BUSP 119 +#define CLK_DOUT_CMU_NPU_BUS 120 +#define CLK_DOUT_CMU_OTP 121 +#define CLK_DOUT_CMU_PERIC0_BUS 122 +#define CLK_DOUT_CMU_PERIC0_IP 123 +#define CLK_DOUT_CMU_PERIC1_BUS 124 +#define CLK_DOUT_CMU_PERIC1_IP 125 +#define CLK_DOUT_CMU_PERIS_BUS 126 +#define CLK_DOUT_CMU_SSP_BUS 127 +#define CLK_DOUT_CMU_TNR_BUS 128 +#define CLK_DOUT_CMU_VRA_BUS 129 +#define CLK_DOUT_CMU_DPU 130 +#define CLK_DOUT_CMU_DPU_ALT 131 +#define CLK_DOUT_CMU_SHARED0_DIV2 132 +#define CLK_DOUT_CMU_SHARED0_DIV3 133 +#define CLK_DOUT_CMU_SHARED0_DIV4 134 +#define CLK_DOUT_CMU_SHARED1_DIV2 135 +#define CLK_DOUT_CMU_SHARED1_DIV3 136 +#define CLK_DOUT_CMU_SHARED1_DIV4 137 +#define CLK_DOUT_CMU_SHARED2_DIV2 138 +#define CLK_DOUT_CMU_SHARED4_DIV2 139 +#define CLK_DOUT_CMU_SHARED4_DIV3 140 +#define CLK_DOUT_CMU_SHARED4_DIV4 141 +#define CLK_GOUT_CMU_G3D_BUS 142 +#define CLK_GOUT_CMU_MIF_SWITCH 143 +#define CLK_GOUT_CMU_APM_BUS 144 +#define CLK_GOUT_CMU_AUD_CPU 145 +#define CLK_GOUT_CMU_BUS0_BUS 146 +#define CLK_GOUT_CMU_BUS1_BUS 147 +#define CLK_GOUT_CMU_BUS1_SSS 148 +#define CLK_GOUT_CMU_CIS_CLK0 149 +#define CLK_GOUT_CMU_CIS_CLK1 150 +#define CLK_GOUT_CMU_CIS_CLK2 151 +#define CLK_GOUT_CMU_CIS_CLK3 152 +#define CLK_GOUT_CMU_CIS_CLK4 153 +#define CLK_GOUT_CMU_CIS_CLK5 154 +#define CLK_GOUT_CMU_CORE_BUS 155 +#define CLK_GOUT_CMU_CPUCL0_DBG_BUS 156 +#define CLK_GOUT_CMU_CPUCL0_SWITCH 157 +#define CLK_GOUT_CMU_CPUCL1_SWITCH 158 +#define CLK_GOUT_CMU_CPUCL2_BUSP 159 +#define CLK_GOUT_CMU_CPUCL2_SWITCH 160 +#define CLK_GOUT_CMU_CSIS_BUS 161 +#define CLK_GOUT_CMU_CSIS_OIS_MCU 162 +#define CLK_GOUT_CMU_DNC_BUS 163 +#define CLK_GOUT_CMU_DNC_BUSM 164 +#define CLK_GOUT_CMU_DNS_BUS 165 +#define CLK_GOUT_CMU_DPU 166 +#define CLK_GOUT_CMU_DPU_BUS 167 +#define CLK_GOUT_CMU_DSP_BUS 168 +#define CLK_GOUT_CMU_G2D_G2D 169 +#define CLK_GOUT_CMU_G2D_MSCL 170 +#define CLK_GOUT_CMU_G3D_SWITCH 171 +#define CLK_GOUT_CMU_HPM 172 +#define CLK_GOUT_CMU_HSI0_BUS 173 +#define CLK_GOUT_CMU_HSI0_DPGTC 174 +#define CLK_GOUT_CMU_HSI0_USB31DRD 175 +#define CLK_GOUT_CMU_HSI0_USBDP_DEBUG 176 +#define CLK_GOUT_CMU_HSI1_BUS 177 +#define CLK_GOUT_CMU_HSI1_MMC_CARD 178 +#define CLK_GOUT_CMU_HSI1_PCIE 179 +#define CLK_GOUT_CMU_HSI1_UFS_CARD 180 +#define CLK_GOUT_CMU_HSI1_UFS_EMBD 181 +#define CLK_GOUT_CMU_HSI2_BUS 182 +#define CLK_GOUT_CMU_HSI2_PCIE 183 +#define CLK_GOUT_CMU_IPP_BUS 184 +#define CLK_GOUT_CMU_ITP_BUS 185 +#define CLK_GOUT_CMU_MCSC_BUS 186 +#define CLK_GOUT_CMU_MCSC_GDC 187 +#define CLK_GOUT_CMU_MFC0_MFC0 188 +#define CLK_GOUT_CMU_MFC0_WFD 189 +#define CLK_GOUT_CMU_MIF_BUSP 190 +#define CLK_GOUT_CMU_NPU_BUS 191 +#define CLK_GOUT_CMU_PERIC0_BUS 192 +#define CLK_GOUT_CMU_PERIC0_IP 193 +#define CLK_GOUT_CMU_PERIC1_BUS 194 +#define CLK_GOUT_CMU_PERIC1_IP 195 +#define CLK_GOUT_CMU_PERIS_BUS 196 +#define CLK_GOUT_CMU_SSP_BUS 197 +#define CLK_GOUT_CMU_TNR_BUS 198 +#define CLK_GOUT_CMU_VRA_BUS 199 + +/* CMU_HSI0 */ +#define CLK_MOUT_HSI0_BUS_USER 1 +#define CLK_MOUT_HSI0_USB31DRD_USER 2 +#define CLK_MOUT_HSI0_USBDP_DEBUG_USER 3 +#define CLK_MOUT_HSI0_DPGTC_USER 4 +#define CLK_GOUT_HSI0_DP_LINK_DP_GTC_CLK 5 +#define CLK_GOUT_HSI0_DP_LINK_PCLK 6 +#define CLK_GOUT_HSI0_D_TZPC_HSI0_PCLK 7 +#define CLK_GOUT_HSI0_LHM_AXI_P_HSI0_CLK 8 +#define CLK_GOUT_HSI0_PPMU_HSI0_BUS1_ACLK 9 +#define CLK_GOUT_HSI0_PPMU_HSI0_BUS1_PCLK 10 +#define CLK_GOUT_HSI0_CLK_HSI0_BUS_CLK 11 +#define CLK_GOUT_HSI0_SYSMMU_USB_CLK_S2 12 +#define CLK_GOUT_HSI0_SYSREG_HSI0_PCLK 13 +#define CLK_GOUT_HSI0_USB31DRD_ACLK_PHYCTRL 14 +#define CLK_GOUT_HSI0_USB31DRD_BUS_CLK_EARLY 15 +#define CLK_GOUT_HSI0_USB31DRD_USB31DRD_REF_CLK_40 16 +#define CLK_GOUT_HSI0_USB31DRD_USBDPPHY_REF_SOC_PLL 17 +#define CLK_GOUT_HSI0_USB31DRD_USBDPPHY_SCL_APB 18 +#define CLK_GOUT_HSI0_USB31DRD_USBPCS_APB_CLK 19 +#define CLK_GOUT_HSI0_VGEN_LITE_HSI0_CLK 20 +#define CLK_GOUT_HSI0_CMU_HSI0_PCLK 21 +#define CLK_GOUT_HSI0_XIU_D_HSI0_ACLK 22 + +#endif -- 2.45.2
