path: root/drivers/phy/mediatek/phy-mtk-tphy.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2015 MediaTek Inc.
 * Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
 *
 */

#include <dt-bindings/phy/phy.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/iopoll.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/nvmem-consumer.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>

#include "phy-mtk-io.h"

/* version V1 sub-banks offset base address */
/* banks shared by multiple phys */
#define SSUSB_SIFSLV_V1_SPLLC		0x000	/* shared by u3 phys */
#define SSUSB_SIFSLV_V1_U2FREQ		0x100	/* shared by u2 phys */
#define SSUSB_SIFSLV_V1_CHIP		0x300	/* shared by u3 phys */
/* u2 phy bank */
#define SSUSB_SIFSLV_V1_U2PHY_COM	0x000
/* u3/pcie/sata phy banks */
#define SSUSB_SIFSLV_V1_U3PHYD		0x000
#define SSUSB_SIFSLV_V1_U3PHYA		0x200

/* version V2/V3 sub-banks offset base address */
/* V3: U2FREQ is not used anymore, but reserved */
/* u2 phy banks */
#define SSUSB_SIFSLV_V2_MISC		0x000
#define SSUSB_SIFSLV_V2_U2FREQ		0x100
#define SSUSB_SIFSLV_V2_U2PHY_COM	0x300
/* u3/pcie/sata phy banks */
#define SSUSB_SIFSLV_V2_SPLLC		0x000
#define SSUSB_SIFSLV_V2_CHIP		0x100
#define SSUSB_SIFSLV_V2_U3PHYD		0x200
#define SSUSB_SIFSLV_V2_U3PHYA		0x400

#define U3P_MISC_REG1		0x04
#define MR1_EFUSE_AUTO_LOAD_DIS		BIT(6)

#define U3P_USBPHYACR0		0x000
#define PA0_RG_U2PLL_FORCE_ON		BIT(15)
#define PA0_USB20_PLL_PREDIV		GENMASK(7, 6)
#define PA0_USB20_PLL_PREDIV_VAL(x)	((0x3 & (x)) << 6)
#define PA0_RG_USB20_INTR_EN		BIT(5)

#define U3P_USBPHYACR1		0x004
#define PA1_RG_INTR_CAL		GENMASK(23, 19)
#define PA1_RG_INTR_CAL_VAL(x)	((0x1f & (x)) << 19)
#define PA1_RG_VRT_SEL			GENMASK(14, 12)
#define PA1_RG_VRT_SEL_VAL(x)	((0x7 & (x)) << 12)
#define PA1_RG_TERM_SEL		GENMASK(10, 8)
#define PA1_RG_TERM_SEL_VAL(x)	((0x7 & (x)) << 8)

#define U3P_USBPHYACR2		0x008
#define PA2_RG_U2PLL_BW			GENMASK(21, 19)
#define PA2_RG_U2PLL_BW_VAL(x)		((0x7 & (x)) << 19)
#define PA2_RG_SIF_U2PLL_FORCE_EN	BIT(18)

#define U3P_USBPHYACR5		0x014
#define PA5_RG_U2_HSTX_SRCAL_EN	BIT(15)
#define PA5_RG_U2_HSTX_SRCTRL		GENMASK(14, 12)
#define PA5_RG_U2_HSTX_SRCTRL_VAL(x)	((0x7 & (x)) << 12)
#define PA5_RG_U2_HS_100U_U3_EN	BIT(11)

#define U3P_USBPHYACR6		0x018
#define PA6_RG_U2_BC11_SW_EN		BIT(23)
#define PA6_RG_U2_OTG_VBUSCMP_EN	BIT(20)
#define PA6_RG_U2_DISCTH		GENMASK(7, 4)
#define PA6_RG_U2_DISCTH_VAL(x)	((0xf & (x)) << 4)
#define PA6_RG_U2_SQTH		GENMASK(3, 0)
#define PA6_RG_U2_SQTH_VAL(x)	(0xf & (x))

#define U3P_U2PHYACR4		0x020
#define P2C_RG_USB20_GPIO_CTL		BIT(9)
#define P2C_USB20_GPIO_MODE		BIT(8)
#define P2C_U2_GPIO_CTR_MSK	(P2C_RG_USB20_GPIO_CTL | P2C_USB20_GPIO_MODE)

#define U3P_U2PHYA_RESV		0x030
#define P2R_RG_U2PLL_FBDIV_26M		0x1bb13b
#define P2R_RG_U2PLL_FBDIV_48M		0x3c0000

#define U3P_U2PHYA_RESV1	0x044
#define P2R_RG_U2PLL_REFCLK_SEL	BIT(5)
#define P2R_RG_U2PLL_FRA_EN		BIT(3)

#define U3D_U2PHYDCR0		0x060
#define P2C_RG_SIF_U2PLL_FORCE_ON	BIT(24)

#define U3P_U2PHYDTM0		0x068
#define P2C_FORCE_UART_EN		BIT(26)
#define P2C_FORCE_DATAIN		BIT(23)
#define P2C_FORCE_DM_PULLDOWN		BIT(21)
#define P2C_FORCE_DP_PULLDOWN		BIT(20)
#define P2C_FORCE_XCVRSEL		BIT(19)
#define P2C_FORCE_SUSPENDM		BIT(18)
#define P2C_FORCE_TERMSEL		BIT(17)
#define P2C_RG_DATAIN			GENMASK(13, 10)
#define P2C_RG_DATAIN_VAL(x)		((0xf & (x)) << 10)
#define P2C_RG_DMPULLDOWN		BIT(7)
#define P2C_RG_DPPULLDOWN		BIT(6)
#define P2C_RG_XCVRSEL			GENMASK(5, 4)
#define P2C_RG_XCVRSEL_VAL(x)		((0x3 & (x)) << 4)
#define P2C_RG_SUSPENDM			BIT(3)
#define P2C_RG_TERMSEL			BIT(2)
#define P2C_DTM0_PART_MASK \
		(P2C_FORCE_DATAIN | P2C_FORCE_DM_PULLDOWN | \
		P2C_FORCE_DP_PULLDOWN | P2C_FORCE_XCVRSEL | \
		P2C_FORCE_TERMSEL | P2C_RG_DMPULLDOWN | \
		P2C_RG_DPPULLDOWN | P2C_RG_TERMSEL)

#define U3P_U2PHYDTM1		0x06C
#define P2C_RG_UART_EN			BIT(16)
#define P2C_FORCE_IDDIG		BIT(9)
#define P2C_RG_VBUSVALID		BIT(5)
#define P2C_RG_SESSEND			BIT(4)
#define P2C_RG_AVALID			BIT(2)
#define P2C_RG_IDDIG			BIT(1)

#define U3P_U2PHYBC12C		0x080
#define P2C_RG_CHGDT_EN		BIT(0)

#define U3P_U3_CHIP_GPIO_CTLD		0x0c
#define P3C_REG_IP_SW_RST		BIT(31)
#define P3C_MCU_BUS_CK_GATE_EN		BIT(30)
#define P3C_FORCE_IP_SW_RST		BIT(29)

#define U3P_U3_CHIP_GPIO_CTLE		0x10
#define P3C_RG_SWRST_U3_PHYD		BIT(25)
#define P3C_RG_SWRST_U3_PHYD_FORCE_EN	BIT(24)

#define U3P_U3_PHYA_REG0	0x000
#define P3A_RG_IEXT_INTR		GENMASK(15, 10)
#define P3A_RG_IEXT_INTR_VAL(x)		((0x3f & (x)) << 10)
#define P3A_RG_CLKDRV_OFF		GENMASK(3, 2)
#define P3A_RG_CLKDRV_OFF_VAL(x)	((0x3 & (x)) << 2)

#define U3P_U3_PHYA_REG1	0x004
#define P3A_RG_CLKDRV_AMP		GENMASK(31, 29)
#define P3A_RG_CLKDRV_AMP_VAL(x)	((0x7 & (x)) << 29)

#define U3P_U3_PHYA_REG6	0