From e1d57ac7fe53dc52bb8aab9db59008c7fec8d863 Mon Sep 17 00:00:00 2001 From: Jia Wang Date: Mon, 20 Jul 2026 08:38:05 +0800 Subject: [PATCH] dt-bindings: clock: ultrarisc: Add DP1000 Clock Controller Add doc for the clock controller on the UltraRISC DP1000 RISC-V SoC. Signed-off-by: Jia Wang Reviewed-by: Conor Dooley Signed-off-by: Brian Masney --- .../bindings/clock/ultrarisc,dp1000-clk.yaml | 60 +++++++++++++++++++ MAINTAINERS | 7 +++ .../dt-bindings/clock/ultrarisc,dp1000-clk.h | 27 +++++++++ 3 files changed, 94 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/ultrarisc,dp1000-clk.yaml create mode 100644 include/dt-bindings/clock/ultrarisc,dp1000-clk.h diff --git a/Documentation/devicetree/bindings/clock/ultrarisc,dp1000-clk.yaml b/Documentation/devicetree/bindings/clock/ultrarisc,dp1000-clk.yaml new file mode 100644 index 000000000000..ede565ec440c --- /dev/null +++ b/Documentation/devicetree/bindings/clock/ultrarisc,dp1000-clk.yaml @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/ultrarisc,dp1000-clk.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: UltraRISC DP1000 Clock Controller + +maintainers: + - Jia Wang + +description: | + The UltraRISC DP1000 clock controller is driven from a single external + oscillator input. It provides a system PLL with fractional multiplier + and post-divider stages, several fixed-ratio derived clocks for + the on-chip subsystem, Clock Configuration Register (CCR) divider + outputs for GMAC and the UART, I2C, and SPI root clocks, and + per-instance gate clocks for UART0-3, I2C0-3, and SPI0-1. + + All available clocks are defined as preprocessor macros in + include/dt-bindings/clock/ultrarisc,dp1000-clk.h + +properties: + compatible: + const: ultrarisc,dp1000-clk + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + description: + External oscillator input clock used as the parent of the PLLs. + + "#clock-cells": + const: 1 + +required: + - compatible + - reg + - clocks + - "#clock-cells" + +additionalProperties: false + +examples: + - | + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + clock-controller@11080000 { + compatible = "ultrarisc,dp1000-clk"; + reg = <0x0 0x11080000 0x0 0x1000>; + clocks = <&osc>; + #clock-cells = <1>; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 15011f5752a9..ce93b28497e6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -27669,6 +27669,13 @@ S: Maintained F: drivers/usb/common/ulpi.c F: include/linux/ulpi/ +ULTRARISC DP1000 CLOCK DRIVER +M: Jia Wang +L: linux-clk@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/clock/ultrarisc,dp1000-clk.yaml +F: include/dt-bindings/clock/ultrarisc,dp1000-clk.h + ULTRARISC DP1000 PINCTRL DRIVER M: Jia Wang L: linux-gpio@vger.kernel.org diff --git a/include/dt-bindings/clock/ultrarisc,dp1000-clk.h b/include/dt-bindings/clock/ultrarisc,dp1000-clk.h new file mode 100644 index 000000000000..751125f99965 --- /dev/null +++ b/include/dt-bindings/clock/ultrarisc,dp1000-clk.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +#ifndef _DT_BINDINGS_CLOCK_ULTRARISC_DP1000_CLK_H +#define _DT_BINDINGS_CLOCK_ULTRARISC_DP1000_CLK_H + +#define DP1000_CLK_SYSPLL 0 +#define DP1000_CLK_SYSPLL_DIV2 1 +#define DP1000_CLK_SUBSYS 2 +#define DP1000_CLK_GMAC 3 +#define DP1000_CLK_UART_ROOT 4 +#define DP1000_CLK_I2C_ROOT 5 +#define DP1000_CLK_SPI_ROOT 6 +#define DP1000_CLK_PCIE_DBI 7 +#define DP1000_CLK_PCIEX4_CORE 8 +#define DP1000_CLK_PCIEX16_CORE 9 +#define DP1000_CLK_PCIE_AUX 10 +#define DP1000_CLK_UART0 11 +#define DP1000_CLK_UART1 12 +#define DP1000_CLK_UART2 13 +#define DP1000_CLK_UART3 14 +#define DP1000_CLK_I2C0 15 +#define DP1000_CLK_I2C1 16 +#define DP1000_CLK_I2C2 17 +#define DP1000_CLK_I2C3 18 +#define DP1000_CLK_SPI0 19 +#define DP1000_CLK_SPI1 20 + +#endif /* _DT_BINDINGS_CLOCK_ULTRARISC_DP1000_CLK_H */