drivers/reset/reset-spacemit-k1.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2022 Spacemit Inc.
 * Copyright (C) 2025 Huan Zhou <pericycle.cc@gmail.com>
 */

#include <asm/io.h>
#include <config.h>
#include <dm.h>
#include <dm/device_compat.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <dt-bindings/reset/spacemit-k1-reset.h>
#include <linux/bitops.h>
#include <reset-uclass.h>

/* APBC register offset */
#define APBC_UART1_CLK_RST      0x0
#define APBC_UART2_CLK_RST      0x4
#define APBC_GPIO_CLK_RST       0x8
#define APBC_PWM0_CLK_RST       0xc
#define APBC_PWM1_CLK_RST       0x10
#define APBC_PWM2_CLK_RST       0x14
#define APBC_PWM3_CLK_RST       0x18
#define APBC_TWSI8_CLK_RST      0x20
#define APBC_UART3_CLK_RST      0x24
#define APBC_RTC_CLK_RST        0x28
#define APBC_TWSI0_CLK_RST      0x2c
#define APBC_TWSI1_CLK_RST      0x30
#define APBC_TIMERS1_CLK_RST    0x34
#define APBC_TWSI2_CLK_RST      0x38
#define APBC_AIB_CLK_RST        0x3c
#define APBC_TWSI4_CLK_RST      0x40
#define APBC_TIMERS2_CLK_RST    0x44
#define APBC_ONEWIRE_CLK_RST    0x48
#define APBC_TWSI5_CLK_RST      0x4c
#define APBC_DRO_CLK_RST        0x58
#define APBC_IR_CLK_RST         0x5c
#define APBC_TWSI6_CLK_RST      0x60
#define APBC_TWSI7_CLK_RST      0x68
#define APBC_TSEN_CLK_RST       0x6c

#define APBC_UART4_CLK_RST      0x70
#define APBC_UART5_CLK_RST      0x74
#define APBC_UART6_CLK_RST      0x78
#define APBC_SSP3_CLK_RST       0x7c

#define APBC_SSPA0_CLK_RST      0x80
#define APBC_SSPA1_CLK_RST      0x84

#define APBC_IPC_AP2AUD_CLK_RST 0x90
#define APBC_UART7_CLK_RST      0x94
#define APBC_UART8_CLK_RST      0x98
#define APBC_UART9_CLK_RST      0x9c

#define APBC_CAN0_CLK_RST       0xa0
#define APBC_PWM4_CLK_RST       0xa8
#define APBC_PWM5_CLK_RST       0xac
#define APBC_PWM6_CLK_RST       0xb0
#define APBC_PWM7_CLK_RST       0xb4
#define APBC_PWM8_CLK_RST       0xb8
#define APBC_PWM9_CLK_RST       0xbc
#define APBC_PWM10_CLK_RST      0xc0
#define APBC_PWM11_CLK_RST      0xc4
#define APBC_PWM12_CLK_RST      0xc8
#define APBC_PWM13_CLK_RST      0xcc
#define APBC_PWM14_CLK_RST      0xd0
#define APBC_PWM15_CLK_RST      0xd4
#define APBC_PWM16_CLK_RST      0xd8
#define APBC_PWM17_CLK_RST      0xdc
#define APBC_PWM18_CLK_RST      0xe0
#define APBC_PWM19_CLK_RST      0xe4
/* end of APBC register offset */

/* MPMU register offset */
#define MPMU_WDTPCR     0x200
/* end of MPMU register offset */

/* APMU register offset */
#define APMU_JPG_CLK_RES_CTRL       0x20
#define APMU_CSI_CCIC2_CLK_RES_CTRL 0x24
#define APMU_ISP_CLK_RES_CTRL       0x38
#define APMU_LCD_CLK_RES_CTRL1      0x44
#define APMU_LCD_SPI_CLK_RES_CTRL   0x48
#define APMU_LCD_CLK_RES_CTRL2      0x4c
#define APMU_CCIC_CLK_RES_CTRL      0x50
#define APMU_SDH0_CLK_RES_CTRL      0x54
#define APMU_SDH1_CLK_RES_CTRL      0x58
#define APMU_USB_CLK_RES_CTRL       0x5c
#define APMU_QSPI_CLK_RES_CTRL      0x60
#define APMU_USB_CLK_RES_CTRL       0x5c
#define APMU_DMA_CLK_RES_CTRL       0x64
#define APMU_AES_CLK_RES_CTRL       0x68
#define APMU_VPU_CLK_RES_CTRL       0xa4
#define APMU_GPU_CLK_RES_CTRL       0xcc
#define APMU_SDH2_CLK_RES_CTRL      0xe0
#define APMU_PMUA_MC_CTRL           0xe8
#define APMU_PMU_CC2_AP             0x100
#define APMU_PMUA_EM_CLK_RES_CTRL   0x104

#define APMU_AUDIO_CLK_RES_CTRL     0x14c
#define APMU_HDMI_CLK_RES_CTRL      0x1B8

#define APMU_PCIE_CLK_RES_CTRL_0    0x3cc
#define APMU_PCIE_CLK_RES_CTRL_1    0x3d4
#define APMU_PCIE_CLK_RES_CTRL_2    0x3dc

#define APMU_EMAC0_CLK_RES_CTRL     0x3e4
#define APMU_EMAC1_CLK_RES_CTRL     0x3ec
/* end of APMU register offset */

/* APBC2 register offset */
#define APBC2_UART1_CLK_RST		0x00
#define APBC2_SSP2_CLK_RST		0x04
#define APBC2_TWSI3_CLK_RST		0x08
#define APBC2_RTC_CLK_RST		0x0c
#define APBC2_TIMERS0_CLK_RST	0x10
#define APBC2_KPC_CLK_RST		0x14
#define APBC2_GPIO_CLK_RST		0x1c
/* end of APBC2 register offset */

enum spacemit_reset_base_type {
	RST_BASE_TYPE_MPMU       = 0,
	RST_BASE_TYPE_APMU       = 1,
	RST_BASE_TYPE_APBC       = 2,
	RST_BASE_TYPE_APBS       = 3,
	RST_BASE_TYPE_CIU        = 4,
	RST_BASE_TYPE_DCIU       = 5,
	RST_BASE_TYPE_DDRC       = 6,
	RST_BASE_TYPE_AUDC       = 7,
	RST_BASE_TYPE_APBC2      = 8,
};

struct spacemit_reset_signal {
	u32 offset;
	u32 mask;
	u32 deassert_val;
	u32 assert_val;
	enum spacemit_reset_base_type type;
};

struct spacemit_reset_base {
	void __iomem *mpmu_base;
	void __iomem *apmu_base;
	void __iomem *apbc_base;
	void __iomem *apbs_base;
	void __iomem *ciu_base;
	void __iomem *dciu_base;
	void __iomem *ddrc_base;
	void __iomem *audio_ctrl_base;
	void __iomem *apbc2_base;
};

struct spacemit_reset {
	struct spacemit_reset_base io_base;
	const struct spacemit_reset_signal *signals;
};

enum {
	RESET_TWSI6_SPL = 0,
	RESET_TWSI8_SPL,
	RESET_SDH_AXI_SPL,
	RESET_SDH0_SPL,
	RESET_USB_AXI_SPL,
	RESET_USBP1_AXI_SPL,
	RESET_USB3_0_SPL,
	RESET_QSPI_SPL,
	RESET_QSPI_BUS_SPL,
	RESET_AES_SPL,
	RESET_SDH2_SPL,
	RESET_NUMBER_SPL
};

static const struct spacemit_reset_signal
	k1_reset_signals[RESET_NUMBER] = {
	[RESET_UART1]   = { APBC_UART1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_UART2]   = { APBC_UART2_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_GPIO]    = { APBC_GPIO_CLK_RST, BIT(2), 0,
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM0]    = { APBC_PWM0_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM1]    = { APBC_PWM1_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM2]    = { APBC_PWM2_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM3]    = { APBC_PWM3_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM4]    = { APBC_PWM4_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM5]    = { APBC_PWM5_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM6]    = { APBC_PWM6_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM7]    = { APBC_PWM7_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM8]    = { APBC_PWM8_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM9]    = { APBC_PWM9_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM10]   = { APBC_PWM10_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM11]   = { APBC_PWM11_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM12]   = { APBC_PWM12_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM13]   = { APBC_PWM13_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM14]   = { APBC_PWM14_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM15]   = { APBC_PWM15_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM16]   = { APBC_PWM16_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM17]   = { APBC_PWM17_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM18]   = { APBC_PWM18_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_PWM19]   = { APBC_PWM19_CLK_RST,
			BIT(2) | BIT(0),
			BIT(0),
			BIT(2),
			RST_BASE_TYPE_APBC },
	[RESET_SSP3]    = { APBC_SSP3_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_UART3]   = { APBC_UART3_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_RTC]     = { APBC_RTC_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TWSI0]   = { APBC_TWSI0_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TIMERS1] = { APBC_TIMERS1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_AIB]     = { APBC_AIB_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TIMERS2] = { APBC_TIMERS2_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_ONEWIRE] = { APBC_ONEWIRE_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_SSPA0]   = { APBC_SSPA0_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_SSPA1]   = { APBC_SSPA1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_DRO]     = { APBC_DRO_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_IR]      = { APBC_IR_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TWSI1]   = { APBC_TWSI1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TSEN]    = { APBC_TSEN_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TWSI2]   = { APBC_TWSI2_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TWSI4]   = { APBC_TWSI4_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TWSI5]   = { APBC_TWSI5_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TWSI6]   = { APBC_TWSI6_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TWSI7]   = { APBC_TWSI7_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_TWSI8]   = { APBC_TWSI8_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_IPC_AP2AUD]   = { APBC_IPC_AP2AUD_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_UART4]   = { APBC_UART4_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_UART5]   = { APBC_UART5_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_UART6]   = { APBC_UART6_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_UART7]   = { APBC_UART7_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_UART8]   = { APBC_UART8_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_UART9]   = { APBC_UART9_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	[RESET_CAN0]    = { APBC_CAN0_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
	/* MPMU */
	[RESET_WDT]     = { MPMU_WDTPCR, BIT(2), 0, BIT(2), RST_BASE_TYPE_MPMU },
	/* APMU */
	[RESET_JPG]     = { APMU_JPG_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_CSI]     = { APMU_CSI_CCIC2_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_CCIC2_PHY]   = { APMU_CSI_CCIC2_CLK_RES_CTRL,
				BIT(2),
				BIT(2),
				0,
				RST_BASE_TYPE_APMU },
	[RESET_CCIC3_PHY]   = { APMU_CSI_CCIC2_CLK_RES_CTRL,
				BIT(29),
				BIT(29),
				0,
				RST_BASE_TYPE_APMU },
	[RESET_ISP]     = { APMU_ISP_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_ISP_AHB] = { APMU_ISP_CLK_RES_CTRL, BIT(3), BIT(3), 0, RST_BASE_TYPE_APMU },
	[RESET_ISP_CI]  = { APMU_ISP_CLK_RES_CTRL, BIT(16), BIT(16), 0, RST_BASE_TYPE_APMU },
	[RESET_ISP_CPP] = { APMU_ISP_CLK_RES_CTRL, BIT(27), BIT(27), 0, RST_BASE_TYPE_APMU },
	[RESET_LCD]     = { APMU_LCD_CLK_RES_CTRL1, BIT(4), BIT(4), 0, RST_BASE_TYPE_APMU },
	[RESET_DSI_ESC] = { APMU_LCD_CLK_RES_CTRL1, BIT(3), BIT(3), 0, RST_BASE_TYPE_APMU },
	[RESET_V2D]     = { APMU_LCD_CLK_RES_CTRL1, BIT(27), BIT(27), 0, RST_BASE_TYPE_APMU },
	[RESET_MIPI]    = { APMU_LCD_CLK_RES_CTRL1, BIT(15), BIT(15), 0, RST_BASE_TYPE_APMU },
	[RESET_LCD_SPI] = { APMU_LCD_SPI_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_LCD_SPI_BUS]     = { APMU_LCD_SPI_CLK_RES_CTRL,
				BIT(4),
				BIT(4),
				0,
				RST_BASE_TYPE_APMU },
	[RESET_LCD_SPI_HBUS]    = { APMU_LCD_SPI_CLK_RES_CTRL,
				BIT(2),
				BIT(2),
				0,
				RST_BASE_TYPE_APMU },
	[RESET_LCD_MCLK]    = { APMU_LCD_CLK_RES_CTRL2, BIT(9), BIT(9), 0, RST_BASE_TYPE_APMU },
	[RESET_CCIC_4X]     = { APMU_CCIC_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_CCIC1_PHY]   = { APMU_CCIC_CLK_RES_CTRL, BIT(2), BIT(2), 0, RST_BASE_TYPE_APMU },
	[RESET_SDH_AXI]     = { APMU_SDH0_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_SDH0]      = { APMU_SDH0_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_SDH1]	  = { APMU_SDH1_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_USB_AXI]	  = { APMU_USB_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_USBP1_AXI] = { APMU_USB_CLK_RES_CTRL, BIT(4), BIT(4), 0, RST_BASE_TYPE_APMU },
	[RESET_USB3_0]	  = { APMU_USB_CLK_RES_CTRL,
				BIT(9) | BIT(10) | BIT(11),
				BIT(9) | BIT(10) | BIT(11),
				0,
				RST_BASE_TYPE_APMU },
	[RESET_QSPI]  = { APMU_QSPI_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_QSPI_BUS]  = { APMU_QSPI_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_DMA]	 = { APMU_DMA_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_AES]	 = { APMU_AES_CLK_RES_CTRL, BIT(4), BIT(4), 0, RST_BASE_TYPE_APMU },
	[RESET_VPU]	 = { APMU_VPU_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_GPU]	 = { APMU_GPU_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_SDH2] = { APMU_SDH2_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_MC]	 = { APMU_PMUA_MC_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_EM_AXI]	= { APMU_PMUA_EM_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
	[RESET_EM]	= { APMU_PMUA_EM_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_AUDIO_SYS] = { APMU_AUDIO_CLK_RES_CTRL,
				BIT(0) | BIT(2) | BIT(3),
				BIT(0) | BIT(2) | BIT(3),
				0,
				RST_BASE_TYPE_APMU },
	[RESET_HDMI]	 = { APMU_HDMI_CLK_RES_CTRL, BIT(9), BIT(9), 0, RST_BASE_TYPE_APMU },
	[RESET_PCIE0]	 = { APMU_PCIE_CLK_RES_CTRL_0,
				BIT(3) | BIT(4) | BIT(5) | BIT(8),
				BIT(3) | BIT(4) | BIT(5),
				BIT(8),
				RST_BASE_TYPE_APMU },
	[RESET_PCIE1]	 = { APMU_PCIE_CLK_RES_CTRL_1,
				BIT(3) | BIT(4) | BIT(5) | BIT(8),
				BIT(3) | BIT(4) | BIT(5),
				BIT(8),
				RST_BASE_TYPE_APMU },
	[RESET_PCIE2]	 = { APMU_PCIE_CLK_RES_CTRL_2, 0x138, 0x38, 0x100, RST_BASE_TYPE_APMU },
	[RESET_EMAC0]	 = { APMU_EMAC0_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_EMAC1]	 = { APMU_EMAC1_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
	[RESET_SEC_UART1]	= { APBC2_UART1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
	[RESET_SEC_SSP2]	= { APBC2_SSP2_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
	[RESET_SEC_TWSI3]	= { APBC2_TWSI3_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
	[RESET_SEC_RTC]		= { APBC2_RTC_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
	[RESET_SEC_TIMERS0]	= { APBC2_TIMERS0_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
	[RESET_SEC_KPC]		= { APBC2_KPC_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
	[RESET_SEC_GPIO]	= { APBC2_GPIO_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
	};

static u32 spacemit_reset_read(struct spacemit_reset *reset, u32 id)
{
	void __iomem *base;

	switch (reset->signals[id].type) {
	case RST_BASE_TYPE_APMU:
		base = reset->io_base.apmu_base;
		break;
	case RST_BASE_TYPE_APBC:
		base = reset->io_base.apbc_base;
		break;
	default:
		base = reset->io_base.apbc_base;
		break;
	}

	return readl(base + reset->signals[id].offset);
}

static void spacemit_reset_write(struct spacemit_reset *reset, u32 value, u32 id)
{
	void __iomem *base;

	switch (reset->signals[id].type) {
	case RST_BASE_TYPE_APMU:
		base = reset->io_base.apmu_base;
		break;
	case RST_BASE_TYPE_APBC:
		base = reset->io_base.apbc_base;
		break;
	default:
		base = reset->io_base.apbc_base;
		break;
	}

	writel(value, base + reset->signals[id].offset);
}

static void spacemit_reset_set(struct reset_ctl *rst, u32 id, bool assert)
{
	u32 value;
	struct spacemit_reset *reset = dev_get_priv(rst->dev);

	value = spacemit_reset_read(reset, id);

	if (assert) {
		value &= ~reset->signals[id].mask;
		value |= reset->signals[id].assert_val;
	} else {
		value &= ~reset->signals[id].mask;
		value |= reset->signals[id].deassert_val;
	}

	spacemit_reset_write(reset, value, id);
}

static int spacemit_reset_update(struct reset_ctl *rst, bool assert)
{
	if (rst->id < RESET_UART1 || rst->id >= RESET_NUMBER)
		return 0;

	/* can not write to twsi8 */
	if (rst->id == RESET_TWSI8)
		return 0;

	spacemit_reset_set(rst, rst->id, assert);
	return 0;
}

static int spacemit_reset_assert(struct reset_ctl *rst)
{
	return spacemit_reset_update(rst, true);
}

static int spacemit_reset_deassert(struct reset_ctl *rst)
{
	return spacemit_reset_update(rst, false);
}

static int spacemit_k1_reset_probe(struct udevice *dev)
{
	struct spacemit_reset *reset = dev_get_priv(dev);

	reset->io_base.mpmu_base = (void *)dev_remap_addr_index(dev, 0);
	if (!reset->io_base.mpmu_base) {
		pr_err("failed to map mpmu registers\n");
		goto out;
	}

	reset->io_base.apmu_base = (void *)dev_remap_addr_index(dev, 1);
	if (!reset->io_base.apmu_base) {
		pr_err("failed to map apmu registers\n");
		goto out;
	}

	reset->io_base.apbc_base = (void *)dev_remap_addr_index(dev, 2);
	if (!reset->io_base.apbc_base) {
		pr_err("failed to map apbc registers\n");
		goto out;
	}

	reset->io_base.apbs_base = (void *)dev_remap_addr_index(dev, 3);
	if (!reset->io_base.apbs_base) {
		pr_err("failed to map apbs registers\n");
		goto out;
	}

	reset->io_base.ciu_base = (void *)dev_remap_addr_index(dev, 4);
	if (!reset->io_base.ciu_base) {
		pr_err("failed to map ciu registers\n");
		goto out;
	}

	reset->io_base.dciu_base = (void *)dev_remap_addr_index(dev, 5);
	if (!reset->io_base.dciu_base) {
		pr_err("failed to map dragon ciu registers\n");
		goto out;
	}

	reset->io_base.ddrc_base = (void *)dev_remap_addr_index(dev, 6);
	if (!reset->io_base.ddrc_base) {
		pr_err("failed to map ddrc registers\n");
		goto out;
	}

	reset->io_base.apbc2_base = (void *)dev_remap_addr_index(dev, 7);
	if (!reset->io_base.apbc2_base) {
		pr_err("failed to map apbc2 registers\n");
		goto out;
	}

	reset->signals = k1_reset_signals;

out:
	return 0;
}

const struct reset_ops k1_reset_ops = {
	.rst_assert = spacemit_reset_assert,
	.rst_deassert = spacemit_reset_deassert,
};

static const struct udevice_id k1_reset_ids[] = {
	{ .compatible = "spacemit,k1-reset", },
	{},
};

U_BOOT_DRIVER(k1_reset) = {
	.name		= "spacemit,k1-reset",
	.id		= UCLASS_RESET,
	.ops		= &k1_reset_ops,
	.of_match	= k1_reset_ids,
	.probe		= spacemit_k1_reset_probe,
	.priv_auto	= sizeof(struct spacemit_reset),
};