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Message-Id: <20241207-exynos990-cmu-v3-1-20c0f6ea02f0@mentallysanemainliners.org>
Date: Sat, 07 Dec 2024 10:25:38 +0100
From: Igor Belwon <igor.belwon@...tallysanemainliners.org>
To: Krzysztof Kozlowski <krzk@...nel.org>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Chanwoo Choi <cw00.choi@...sung.com>, Alim Akhtar <alim.akhtar@...sung.com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org,
Igor Belwon <igor.belwon@...tallysanemainliners.org>
Subject: [PATCH v3 1/3] dt-bindings: clock: Add Exynos990 SoC CMU bindings
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@...tallysanemainliners.org>
---
.../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@...tallysanemainliners.org>
+ - Chanwoo Choi <cw00.choi@...sung.com>
+ - Krzysztof Kozlowski <krzk@...nel.org>
+
+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@...00000 {
+ 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@...tallysanemainliners.org>
+ *
+ * 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
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