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Message-ID: <20250821123310.94089-2-ravi.patel@samsung.com>
Date: Thu, 21 Aug 2025 18:02:45 +0530
From: Ravi Patel <ravi.patel@...sung.com>
To: jesper.nilsson@...s.com, mturquette@...libre.com, sboyd@...nel.org,
robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org, krzk@...nel.org,
s.nawrocki@...sung.com, cw00.choi@...sung.com, alim.akhtar@...sung.com,
linus.walleij@...aro.org, tomasz.figa@...il.com, catalin.marinas@....com,
will@...nel.org, arnd@...db.de
Cc: ksk4725@...sia.com, kenkim@...sia.com, pjsin865@...sia.com,
gwk1013@...sia.com, hgkim05@...sia.com, mingyoungbo@...sia.com,
smn1196@...sia.com, pankaj.dubey@...sung.com, shradha.t@...sung.com,
ravi.patel@...sung.com, inbaraj.e@...sung.com, swathi.ks@...sung.com,
hrishikesh.d@...sung.com, dj76.yang@...sung.com, hypmean.kim@...sung.com,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, linux-arm-kernel@...s.com,
linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
linux-gpio@...r.kernel.org, soc@...ts.linux.dev
Subject: [PATCH v2 01/10] dt-bindings: clock: Add ARTPEC-8 clock controller
From: Hakyeong Kim <hgkim05@...sia.com>
Add dt-schema for Axis ARTPEC-8 SoC clock controller.
The Clock Management Unit (CMU) has a top-level block CMU_CMU
which generates clocks for other blocks.
Add device-tree binding definitions for following CMU blocks:
- CMU_CMU
- CMU_BUS
- CMU_CORE
- CMU_CPUCL
- CMU_FSYS
- CMU_IMEM
- CMU_PERI
Signed-off-by: Hakyeong Kim <hgkim05@...sia.com>
Signed-off-by: SeonGu Kang <ksk4725@...sia.com>
Signed-off-by: Ravi Patel <ravi.patel@...sung.com>
---
.../bindings/clock/axis,artpec8-clock.yaml | 213 ++++++++++++++++++
include/dt-bindings/clock/axis,artpec8-clk.h | 169 ++++++++++++++
2 files changed, 382 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/axis,artpec8-clock.yaml
create mode 100644 include/dt-bindings/clock/axis,artpec8-clk.h
diff --git a/Documentation/devicetree/bindings/clock/axis,artpec8-clock.yaml b/Documentation/devicetree/bindings/clock/axis,artpec8-clock.yaml
new file mode 100644
index 000000000000..de923afb8dfe
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/axis,artpec8-clock.yaml
@@ -0,0 +1,213 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/axis,artpec8-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Axis ARTPEC-8 SoC clock controller
+
+maintainers:
+ - Jesper Nilsson <jesper.nilsson@...s.com>
+
+description: |
+ ARTPEC-8 clock controller is comprised of several CMU (Clock Management Unit)
+ 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 (25 MHz).
+ This external clock must be defined as a fixed-rate clock in dts.
+
+ CMU_CMU 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_CMU.
+
+ 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/axis,artpec8-clk.h' header.
+
+properties:
+ compatible:
+ enum:
+ - axis,artpec8-cmu-cmu
+ - axis,artpec8-cmu-bus
+ - axis,artpec8-cmu-core
+ - axis,artpec8-cmu-cpucl
+ - axis,artpec8-cmu-fsys
+ - axis,artpec8-cmu-imem
+ - axis,artpec8-cmu-peri
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 5
+
+ clock-names:
+ minItems: 1
+ maxItems: 5
+
+ "#clock-cells":
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - "#clock-cells"
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ const: axis,artpec8-cmu-cmu
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: External reference clock (25 MHz)
+
+ clock-names:
+ items:
+ - const: fin_pll
+
+ - if:
+ properties:
+ compatible:
+ const: axis,artpec8-cmu-bus
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: External reference clock (25 MHz)
+ - description: CMU_BUS BUS clock (from CMU_CMU)
+ - description: CMU_BUS DLP clock (from CMU_CMU)
+
+ clock-names:
+ items:
+ - const: fin_pll
+ - const: bus
+ - const: dlp
+
+ - if:
+ properties:
+ compatible:
+ const: axis,artpec8-cmu-core
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: External reference clock (25 MHz)
+ - description: CMU_CORE main clock (from CMU_CMU)
+ - description: CMU_CORE DLP clock (from CMU_CMU)
+
+ clock-names:
+ items:
+ - const: fin_pll
+ - const: main
+ - const: dlp
+
+ - if:
+ properties:
+ compatible:
+ const: axis,artpec8-cmu-cpucl
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: External reference clock (25 MHz)
+ - description: CMU_CPUCL switch clock (from CMU_CMU)
+
+ clock-names:
+ items:
+ - const: fin_pll
+ - const: switch
+
+ - if:
+ properties:
+ compatible:
+ const: axis,artpec8-cmu-fsys
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: External reference clock (25 MHz)
+ - description: CMU_FSYS SCAN0 clock (from CMU_CMU)
+ - description: CMU_FSYS SCAN1 clock (from CMU_CMU)
+ - description: CMU_FSYS BUS clock (from CMU_CMU)
+ - description: CMU_FSYS IP clock (from CMU_CMU)
+
+ clock-names:
+ items:
+ - const: fin_pll
+ - const: scan0
+ - const: scan1
+ - const: bus
+ - const: ip
+
+ - if:
+ properties:
+ compatible:
+ const: axis,artpec8-cmu-imem
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: External reference clock (25 MHz)
+ - description: CMU_IMEM ACLK clock (from CMU_CMU)
+ - description: CMU_IMEM JPEG clock (from CMU_CMU)
+
+ clock-names:
+ items:
+ - const: fin_pll
+ - const: aclk
+ - const: jpeg
+
+ - if:
+ properties:
+ compatible:
+ const: axis,artpec8-cmu-peri
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: External reference clock (25 MHz)
+ - description: CMU_PERI IP clock (from CMU_CMU)
+ - description: CMU_PERI AUDIO clock (from CMU_CMU)
+ - description: CMU_PERI DISP clock (from CMU_CMU)
+
+ clock-names:
+ items:
+ - const: fin_pll
+ - const: ip
+ - const: audio
+ - const: disp
+
+additionalProperties: false
+
+examples:
+ # Clock controller node for CMU_FSYS
+ - |
+ #include <dt-bindings/clock/axis,artpec8-clk.h>
+
+ cmu_fsys: clock-controller@...10000 {
+ compatible = "axis,artpec8-cmu-fsys";
+ reg = <0x16c10000 0x4000>;
+ #clock-cells = <1>;
+ clocks = <&fin_pll>,
+ <&cmu_cmu CLK_DOUT_CMU_FSYS_SCAN0>,
+ <&cmu_cmu CLK_DOUT_CMU_FSYS_SCAN1>,
+ <&cmu_cmu CLK_DOUT_CMU_FSYS_BUS>,
+ <&cmu_cmu CLK_DOUT_CMU_FSYS_IP>;
+ clock-names = "fin_pll", "scan0", "scan1", "bus", "ip";
+ };
+
+...
diff --git a/include/dt-bindings/clock/axis,artpec8-clk.h b/include/dt-bindings/clock/axis,artpec8-clk.h
new file mode 100644
index 000000000000..1e6e1409dd94
--- /dev/null
+++ b/include/dt-bindings/clock/axis,artpec8-clk.h
@@ -0,0 +1,169 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (c) 2025 Samsung Electronics Co., Ltd.
+ * https://www.samsung.com
+ * Copyright (c) 2025 Axis Communications AB.
+ * https://www.axis.com
+ *
+ * Device Tree binding constants for ARTPEC-8 clock controller.
+ */
+
+#ifndef _DT_BINDINGS_CLOCK_ARTPEC8_H
+#define _DT_BINDINGS_CLOCK_ARTPEC8_H
+
+/* CMU_CMU */
+#define CLK_FOUT_SHARED0_PLL 1
+#define CLK_DOUT_SHARED0_DIV2 2
+#define CLK_DOUT_SHARED0_DIV3 3
+#define CLK_DOUT_SHARED0_DIV4 4
+#define CLK_FOUT_SHARED1_PLL 5
+#define CLK_DOUT_SHARED1_DIV2 6
+#define CLK_DOUT_SHARED1_DIV3 7
+#define CLK_DOUT_SHARED1_DIV4 8
+#define CLK_FOUT_AUDIO_PLL 9
+#define CLK_DOUT_CMU_BUS 10
+#define CLK_DOUT_CMU_BUS_DLP 11
+#define CLK_DOUT_CMU_CDC_CORE 12
+#define CLK_DOUT_CMU_OTP 13
+#define CLK_DOUT_CMU_CORE_MAIN 14
+#define CLK_DOUT_CMU_CORE_DLP 15
+#define CLK_DOUT_CMU_CPUCL_SWITCH 16
+#define CLK_DOUT_CMU_DLP_CORE 17
+#define CLK_DOUT_CMU_FSYS_BUS 18
+#define CLK_DOUT_CMU_FSYS_IP 19
+#define CLK_DOUT_CMU_FSYS_SCAN0 20
+#define CLK_DOUT_CMU_FSYS_SCAN1 21
+#define CLK_DOUT_CMU_GPU_3D 22
+#define CLK_DOUT_CMU_GPU_2D 23
+#define CLK_DOUT_CMU_IMEM_ACLK 24
+#define CLK_DOUT_CMU_IMEM_JPEG 25
+#define CLK_DOUT_CMU_MIF_SWITCH 26
+#define CLK_DOUT_CMU_MIF_BUSP 27
+#define CLK_DOUT_CMU_PERI_DISP 28
+#define CLK_DOUT_CMU_PERI_IP 29
+#define CLK_DOUT_CMU_PERI_AUDIO 30
+#define CLK_DOUT_CMU_RSP_CORE 31
+#define CLK_DOUT_CMU_TRFM_CORE 32
+#define CLK_DOUT_CMU_VCA_ACE 33
+#define CLK_DOUT_CMU_VCA_OD 34
+#define CLK_DOUT_CMU_VIO_CORE 35
+#define CLK_DOUT_CMU_VIO_AUDIO 36
+#define CLK_DOUT_CMU_VIP0_CORE 37
+#define CLK_DOUT_CMU_VIP1_CORE 38
+#define CLK_DOUT_CMU_VPP_CORE 39
+
+/* CMU_BUS */
+#define CLK_MOUT_BUS_ACLK_USER 1
+#define CLK_MOUT_BUS_DLP_USER 2
+#define CLK_DOUT_BUS_PCLK 3
+
+/* CMU_CORE */
+#define CLK_MOUT_CORE_ACLK_USER 1
+#define CLK_MOUT_CORE_DLP_USER 2
+#define CLK_DOUT_CORE_PCLK 3
+
+/* CMU_CPUCL */
+#define CLK_FOUT_CPUCL_PLL 1
+#define CLK_MOUT_CPUCL_PLL 2
+#define CLK_MOUT_CPUCL_SWITCH_USER 3
+#define CLK_DOUT_CPUCL_CPU 4
+#define CLK_DOUT_CPUCL_CLUSTER_ACLK 5
+#define CLK_DOUT_CPUCL_CLUSTER_PCLKDBG 6
+#define CLK_DOUT_CPUCL_CLUSTER_CNTCLK 7
+#define CLK_DOUT_CPUCL_CLUSTER_ATCLK 8
+#define CLK_DOUT_CPUCL_PCLK 9
+#define CLK_DOUT_CPUCL_CMUREF 10
+#define CLK_DOUT_CPUCL_DBG 11
+#define CLK_DOUT_CPUCL_PCLKDBG 12
+#define CLK_GOUT_CPUCL_CLUSTER_CPU 13
+#define CLK_GOUT_CPUCL_SHORTSTOP 14
+#define CLK_GOUT_CPUCL_CSSYS_IPCLKPORT_PCLKDBG 15
+#define CLK_GOUT_CPUCL_CSSYS_IPCLKPORT_ATCLK 16
+
+/* CMU_FSYS */
+#define CLK_FOUT_FSYS_PLL 1
+#define CLK_MOUT_FSYS_SCAN0_USER 2
+#define CLK_MOUT_FSYS_SCAN1_USER 3
+#define CLK_MOUT_FSYS_BUS_USER 4
+#define CLK_MOUT_FSYS_MMC_USER 5
+#define CLK_DOUT_FSYS_PCIE_PIPE 6
+#define CLK_DOUT_FSYS_ADC 7
+#define CLK_DOUT_FSYS_PCIE_PHY_REFCLK_SYSPLL 8
+#define CLK_DOUT_FSYS_EQOS_INT125 9
+#define CLK_DOUT_FSYS_OTP_MEM 10
+#define CLK_DOUT_FSYS_SCLK_UART 11
+#define CLK_DOUT_FSYS_EQOS_25 12
+#define CLK_DOUT_FSYS_EQOS_2p5 13
+#define CLK_DOUT_FSYS_BUS300 14
+#define CLK_DOUT_FSYS_BUS_QSPI 15
+#define CLK_DOUT_FSYS_MMC_CARD0 16
+#define CLK_DOUT_FSYS_MMC_CARD1 17
+#define CLK_DOUT_SCAN_CLK_FSYS_125 18
+#define CLK_DOUT_FSYS_QSPI 19
+#define CLK_DOUT_FSYS_SFMC_NAND 20
+#define CLK_DOUT_FSYS_SCAN_CLK_MMC 21
+#define CLK_GOUT_FSYS_USB20DRD_IPCLKPORT_ACLK_PHYCTRL_20 22
+#define CLK_GOUT_FSYS_USB20DRD_IPCLKPORT_BUS_CLK_EARLY 23
+#define CLK_GOUT_FSYS_XHB_USB_IPCLKPORT_CLK 24
+#define CLK_GOUT_FSYS_XHB_AHBBR_IPCLKPORT_CLK 25
+#define CLK_GOUT_FSYS_I2C0_IPCLKPORT_I_PCLK 26
+#define CLK_GOUT_FSYS_I2C1_IPCLKPORT_I_PCLK 27
+#define CLK_GOUT_FSYS_PWM_IPCLKPORT_I_PCLK_S0 28
+#define CLK_GOUT_FSYS_DWC_PCIE_CTL_INST_0_MSTR_ACLK_UG 29
+#define CLK_GOUT_FSYS_DWC_PCIE_CTL_INXT_0_SLV_ACLK_UG 30
+#define CLK_GOUT_FSYS_DWC_PCIE_CTL_INST_0_DBI_ACLK_UG 31
+#define CLK_GOUT_FSYS_PIPE_PAL_INST_0_I_APB_PCLK 32
+#define CLK_GOUT_FSYS_EQOS_TOP_IPCLKPORT_ACLK_I 33
+#define CLK_GOUT_FSYS_EQOS_TOP_IPCLKPORT_CLK_CSR_I 34
+#define CLK_GOUT_FSYS_EQOS_TOP_IPCLKPORT_I_RGMII_TXCLK_2P5 35
+#define CLK_GOUT_FSYS_SFMC_IPCLKPORT_I_ACLK_NAND 36
+#define CLK_GOUT_FSYS_MMC0_IPCLKPORT_SDCLKIN 37
+#define CLK_GOUT_FSYS_MMC0_IPCLKPORT_I_ACLK 38
+#define CLK_GOUT_FSYS_MMC1_IPCLKPORT_SDCLKIN 39
+#define CLK_GOUT_FSYS_MMC1_IPCLKPORT_I_ACLK 40
+#define CLK_GOUT_FSYS_PCIE_PHY_REFCLK_IN 41
+#define CLK_GOUT_FSYS_UART0_PCLK 42
+#define CLK_GOUT_FSYS_UART0_SCLK_UART 43
+#define CLK_GOUT_FSYS_BUS_QSPI 44
+#define CLK_GOUT_FSYS_QSPI_IPCLKPORT_HCLK 45
+#define CLK_GOUT_FSYS_QSPI_IPCLKPORT_SSI_CLK 46
+
+/* CMU_IMEM */
+#define CLK_MOUT_IMEM_ACLK_USER 1
+#define CLK_MOUT_IMEM_GIC_CA53 2
+#define CLK_MOUT_IMEM_GIC_CA5 3
+#define CLK_MOUT_IMEM_JPEG_USER 4
+#define CLK_GOUT_IMEM_MCT_PCLK 5
+#define CLK_GOUT_IMEM_PCLK_TMU0_APBIF 6
+
+/* CMU_PERI */
+#define CLK_MOUT_PERI_IP_USER 1
+#define CLK_MOUT_PERI_AUDIO_USER 2
+#define CLK_MOUT_PERI_I2S0 3
+#define CLK_MOUT_PERI_I2S1 4
+#define CLK_MOUT_PERI_DISP_USER 5
+#define CLK_DOUT_PERI_SPI 6
+#define CLK_DOUT_PERI_UART1 7
+#define CLK_DOUT_PERI_UART2 8
+#define CLK_DOUT_PERI_PCLK 9
+#define CLK_DOUT_PERI_I2S0 10
+#define CLK_DOUT_PERI_I2S1 11
+#define CLK_DOUT_PERI_DSIM 12
+#define CLK_GOUT_PERI_UART1_PCLK 13
+#define CLK_GOUT_PERI_UART1_SCLK_UART 14
+#define CLK_GOUT_PERI_UART2_PCLK 15
+#define CLK_GOUT_PERI_UART2_SCLK_UART 16
+#define CLK_GOUT_PERI_I2C2_IPCLKPORT_I_PCLK 17
+#define CLK_GOUT_PERI_I2C3_IPCLKPORT_I_PCLK 18
+#define CLK_GOUT_PERI_SPI0_PCLK 19
+#define CLK_GOUT_PERI_SPI0_SCLK_SPI 20
+#define CLK_GOUT_PERI_APB_ASYNC_DSIM_IPCLKPORT_PCLKS 21
+#define CLK_GOUT_PERI_I2SSC0_IPCLKPORT_CLK_HST 22
+#define CLK_GOUT_PERI_I2SSC1_IPCLKPORT_CLK_HST 23
+#define CLK_GOUT_PERI_AUDIO_OUT_IPCLKPORT_CLK 24
+#define CLK_GOUT_PERI_I2SSC0_IPCLKPORT_CLK 25
+#define CLK_GOUT_PERI_I2SSC1_IPCLKPORT_CLK 26
+#define CLK_GOUT_PERI_DMA4DSIM_IPCLKPORT_CLK_APB_CLK 27
+#define CLK_GOUT_PERI_DMA4DSIM_IPCLKPORT_CLK_AXI_CLK 28
+
+#endif /* _DT_BINDINGS_CLOCK_ARTPEC8_H */
--
2.49.0
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