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Message-ID: <57AD915D.8050900@ti.com>
Date: Fri, 12 Aug 2016 14:35:33 +0530
From: Kishon Vijay Abraham I <kishon@...com>
To: Chris Zhong <zyw@...k-chips.com>, <dianders@...omium.org>,
<tfiga@...omium.org>, <heiko@...ech.de>, <yzq@...k-chips.com>,
<groeck@...omium.org>, <myungjoo.ham@...sung.com>,
<cw00.choi@...sung.com>, <wulf@...k-chips.com>,
<marcheu@...omium.org>
CC: <linux-rockchip@...ts.infradead.org>,
Kever Yang <kever.yang@...k-chips.com>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [v10 PATCH 2/5] phy: Add USB Type-C PHY driver for rk3399
Hi,
On Wednesday 10 August 2016 05:02 AM, Chris Zhong wrote:
> Add a PHY provider driver for the rk3399 SoC Type-c PHY. The USB
> Type-C PHY is designed to support the USB3 and DP applications. The
> PHY basically has two main components: USB3 and DisplyPort. USB3
> operates in SuperSpeed mode and the DP can operate at RBR, HBR and
> HBR2 data rates. Hence, create 2 PHY deivces, the phy[0] for DP,
> and phy[1] for USB3.
>
> Signed-off-by: Chris Zhong <zyw@...k-chips.com>
> Signed-off-by: Kever Yang <kever.yang@...k-chips.com>
>
> ---
>
> Changes in v10:
> - do not control dp select and hpd config in phy driver
>
> Changes in v9:
> - the new_mode should be int not u8
> - move mutex_lock(&tcphy->lock); to earlier place. in
> rockchip_usb3_phy_power_off
> - better mutex lock for phy mode and flip
> - split the Type-C PHY into two PHYs: USB3 and DP
>
> Changes in v8:
> - set the default cable id to EXTCON_USB_HOST
> - optimization Error log
>
> Changes in v7:
> - support new API of extcon
>
> Changes in v6:
> - delete the support of PIN_ASSIGN_A/B
> - set the default mode to MODE_DFP_USB
> - disable DP PLL at USB3 only mode
>
> Changes in v5:
> - support get property from extcon
> - remove PIN ASSIGN A/B support
>
> Changes in v4:
> - select EXTCON
> - use phy framework to control the USB3 and DP function
> - rename PIN_MAP_ to PIN_ASSIGN_
>
> Changes in v3:
> - remove the phy framework(Kishon Vijay Abraham I)
> - add parentheses around the macro
> - use a single space between type and name
> - add spaces after opening and before closing braces.
> - use u16 for register value
> - remove type-c phy header file
> - CodingStyle optimization
> - use some cable extcon to get type-c port information
> - add a extcon to notify Display Port
>
> Changes in v2:
> - select RESET_CONTROLLER
> - alphabetic order
> - modify some spelling mistakes
> - make mode cleaner
> - use bool for enable/disable
> - check all of the return value
> - return a better err number
> - use more readx_poll_timeout()
> - clk_disable_unprepare(tcphy->clk_ref);
> - remove unuse functions, rockchip_typec_phy_power_on/off
> - remove unnecessary typecast from void *
> - use dts node to distinguish between phys.
>
> Changes in v1:
> - update the licence note
> - init core clock to 50MHz
> - use extcon API
> - remove unused global
> - add some comments for magic num
> - change usleep_range(1000, 2000) tousleep_range(1000, 1050)
> - remove __func__ from dev_err
> - return err number when get clk failed
> - remove ADDR_ADJ define
> - use devm_clk_get(&pdev->dev, "tcpdcore")
>
> drivers/phy/Kconfig | 9 +
> drivers/phy/Makefile | 1 +
> drivers/phy/phy-rockchip-typec.c | 981 +++++++++++++++++++++++++++++++++++++++
> 3 files changed, 991 insertions(+)
> create mode 100644 drivers/phy/phy-rockchip-typec.c
>
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index 26566db..83706a5 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -351,6 +351,15 @@ config PHY_ROCKCHIP_DP
> help
> Enable this to support the Rockchip Display Port PHY.
>
> +config PHY_ROCKCHIP_TYPEC
> + tristate "Rockchip TYPEC PHY Driver"
> + depends on ARCH_ROCKCHIP && OF
please also include COMPILE_TEST if ARCH_ROCKCHIP is not selected.
> + select EXTCON
> + select GENERIC_PHY
> + select RESET_CONTROLLER
> + help
> + Enable this to support the Rockchip USB TYPEC PHY.
> +
> config PHY_ST_SPEAR1310_MIPHY
> tristate "ST SPEAR1310-MIPHY driver"
> select GENERIC_PHY
> diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
> index 24596a9..91fa413 100644
> --- a/drivers/phy/Makefile
> +++ b/drivers/phy/Makefile
> @@ -39,6 +39,7 @@ obj-$(CONFIG_PHY_QCOM_APQ8064_SATA) += phy-qcom-apq8064-sata.o
> obj-$(CONFIG_PHY_ROCKCHIP_USB) += phy-rockchip-usb.o
> obj-$(CONFIG_PHY_ROCKCHIP_EMMC) += phy-rockchip-emmc.o
> obj-$(CONFIG_PHY_ROCKCHIP_DP) += phy-rockchip-dp.o
> +obj-$(CONFIG_PHY_ROCKCHIP_TYPEC) += phy-rockchip-typec.o
> obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA) += phy-qcom-ipq806x-sata.o
> obj-$(CONFIG_PHY_ST_SPEAR1310_MIPHY) += phy-spear1310-miphy.o
> obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) += phy-spear1340-miphy.o
> diff --git a/drivers/phy/phy-rockchip-typec.c b/drivers/phy/phy-rockchip-typec.c
> new file mode 100644
> index 0000000..8ec0df4
> --- /dev/null
> +++ b/drivers/phy/phy-rockchip-typec.c
> @@ -0,0 +1,981 @@
> +/*
> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
> + * Author: Chris Zhong <zyw@...k-chips.com>
> + * Kever Yang <kever.yang@...k-chips.com>
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/clk-provider.h>
> +#include <linux/delay.h>
> +#include <linux/extcon.h>
> +#include <linux/io.h>
> +#include <linux/iopoll.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/mutex.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/regmap.h>
> +#include <linux/reset.h>
> +
> +#include <linux/mfd/syscon.h>
> +#include <linux/phy/phy.h>
> +
> +#define CMN_SSM_BANDGAP (0x21 << 2)
> +#define CMN_SSM_BIAS (0x22 << 2)
> +#define CMN_PLLSM0_PLLEN (0x29 << 2)
> +#define CMN_PLLSM0_PLLPRE (0x2a << 2)
> +#define CMN_PLLSM0_PLLVREF (0x2b << 2)
> +#define CMN_PLLSM0_PLLLOCK (0x2c << 2)
> +#define CMN_PLLSM1_PLLEN (0x31 << 2)
> +#define CMN_PLLSM1_PLLPRE (0x32 << 2)
> +#define CMN_PLLSM1_PLLVREF (0x33 << 2)
> +#define CMN_PLLSM1_PLLLOCK (0x34 << 2)
> +#define CMN_PLLSM1_USER_DEF_CTRL (0x37 << 2)
> +#define CMN_ICAL_OVRD (0xc1 << 2)
> +#define CMN_PLL0_VCOCAL_OVRD (0x83 << 2)
> +#define CMN_PLL0_VCOCAL_INIT (0x84 << 2)
> +#define CMN_PLL0_VCOCAL_ITER (0x85 << 2)
> +#define CMN_PLL0_LOCK_REFCNT_START (0x90 << 2)
> +#define CMN_PLL0_LOCK_PLLCNT_START (0x92 << 2)
> +#define CMN_PLL0_LOCK_PLLCNT_THR (0x93 << 2)
> +#define CMN_PLL0_INTDIV (0x94 << 2)
> +#define CMN_PLL0_FRACDIV (0x95 << 2)
> +#define CMN_PLL0_HIGH_THR (0x96 << 2)
> +#define CMN_PLL0_DSM_DIAG (0x97 << 2)
> +#define CMN_PLL0_SS_CTRL1 (0x98 << 2)
> +#define CMN_PLL0_SS_CTRL2 (0x99 << 2)
> +#define CMN_PLL1_VCOCAL_START (0xa1 << 2)
> +#define CMN_PLL1_VCOCAL_OVRD (0xa3 << 2)
> +#define CMN_PLL1_VCOCAL_INIT (0xa4 << 2)
> +#define CMN_PLL1_VCOCAL_ITER (0xa5 << 2)
> +#define CMN_PLL1_LOCK_REFCNT_START (0xb0 << 2)
> +#define CMN_PLL1_LOCK_PLLCNT_START (0xb2 << 2)
> +#define CMN_PLL1_LOCK_PLLCNT_THR (0xb3 << 2)
> +#define CMN_PLL1_INTDIV (0xb4 << 2)
> +#define CMN_PLL1_FRACDIV (0xb5 << 2)
> +#define CMN_PLL1_HIGH_THR (0xb6 << 2)
> +#define CMN_PLL1_DSM_DIAG (0xb7 << 2)
> +#define CMN_PLL1_SS_CTRL1 (0xb8 << 2)
> +#define CMN_PLL1_SS_CTRL2 (0xb9 << 2)
> +#define CMN_RXCAL_OVRD (0xd1 << 2)
> +#define CMN_TXPUCAL_CTRL (0xe0 << 2)
> +#define CMN_TXPUCAL_OVRD (0xe1 << 2)
> +#define CMN_TXPDCAL_OVRD (0xf1 << 2)
> +#define CMN_DIAG_PLL0_FBH_OVRD (0x1c0 << 2)
> +#define CMN_DIAG_PLL0_FBL_OVRD (0x1c1 << 2)
> +#define CMN_DIAG_PLL0_OVRD (0x1c2 << 2)
> +#define CMN_DIAG_PLL0_V2I_TUNE (0x1c5 << 2)
> +#define CMN_DIAG_PLL0_CP_TUNE (0x1c6 << 2)
> +#define CMN_DIAG_PLL0_LF_PROG (0x1c7 << 2)
> +#define CMN_DIAG_PLL1_FBH_OVRD (0x1d0 << 2)
> +#define CMN_DIAG_PLL1_FBL_OVRD (0x1d1 << 2)
> +#define CMN_DIAG_PLL1_OVRD (0x1d2 << 2)
> +#define CMN_DIAG_PLL1_V2I_TUNE (0x1d5 << 2)
> +#define CMN_DIAG_PLL1_CP_TUNE (0x1d6 << 2)
> +#define CMN_DIAG_PLL1_LF_PROG (0x1d7 << 2)
> +#define CMN_DIAG_PLL1_PTATIS_TUNE1 (0x1d8 << 2)
> +#define CMN_DIAG_PLL1_PTATIS_TUNE2 (0x1d9 << 2)
> +#define CMN_DIAG_PLL1_INCLK_CTRL (0x1da << 2)
> +#define CMN_DIAG_HSCLK_SEL (0x1e0 << 2)
> +
> +#define XCVR_PSM_RCTRL(n) ((0x4001 | ((n) << 9)) << 2)
> +#define XCVR_PSM_CAL_TMR(n) ((0x4002 | ((n) << 9)) << 2)
> +#define XCVR_PSM_A0IN_TMR(n) ((0x4003 | ((n) << 9)) << 2)
> +#define TX_TXCC_CAL_SCLR_MULT(n) ((0x4047 | ((n) << 9)) << 2)
> +#define TX_TXCC_CPOST_MULT_00(n) ((0x404c | ((n) << 9)) << 2)
> +#define TX_TXCC_CPOST_MULT_01(n) ((0x404d | ((n) << 9)) << 2)
> +#define TX_TXCC_CPOST_MULT_10(n) ((0x404e | ((n) << 9)) << 2)
> +#define TX_TXCC_CPOST_MULT_11(n) ((0x404f | ((n) << 9)) << 2)
> +#define TX_TXCC_MGNFS_MULT_000(n) ((0x4050 | ((n) << 9)) << 2)
> +#define TX_TXCC_MGNFS_MULT_001(n) ((0x4051 | ((n) << 9)) << 2)
> +#define TX_TXCC_MGNFS_MULT_010(n) ((0x4052 | ((n) << 9)) << 2)
> +#define TX_TXCC_MGNFS_MULT_011(n) ((0x4053 | ((n) << 9)) << 2)
> +#define TX_TXCC_MGNFS_MULT_100(n) ((0x4054 | ((n) << 9)) << 2)
> +#define TX_TXCC_MGNFS_MULT_101(n) ((0x4055 | ((n) << 9)) << 2)
> +#define TX_TXCC_MGNFS_MULT_110(n) ((0x4056 | ((n) << 9)) << 2)
> +#define TX_TXCC_MGNFS_MULT_111(n) ((0x4057 | ((n) << 9)) << 2)
> +#define XCVR_DIAG_PLLDRC_CTRL(n) ((0x40e0 | ((n) << 9)) << 2)
> +#define XCVR_DIAG_BIDI_CTRL(n) ((0x40e8 | ((n) << 9)) << 2)
> +#define XCVR_DIAG_LANE_FCM_EN_MGN(n) ((0x40f2 | ((n) << 9)) << 2)
> +#define TX_PSC_A0(n) ((0x4100 | ((n) << 9)) << 2)
> +#define TX_PSC_A1(n) ((0x4101 | ((n) << 9)) << 2)
> +#define TX_PSC_A2(n) ((0x4102 | ((n) << 9)) << 2)
> +#define TX_PSC_A3(n) ((0x4103 | ((n) << 9)) << 2)
> +#define TX_RCVDET_CTRL(n) ((0x4120 | ((n) << 9)) << 2)
> +#define TX_RCVDET_EN_TMR(n) ((0x4122 | ((n) << 9)) << 2)
> +#define TX_RCVDET_ST_TMR(n) ((0x4123 | ((n) << 9)) << 2)
> +#define TX_DIAG_TX_DRV(n) ((0x41e1 | ((n) << 9)) << 2)
> +#define TX_DIAG_BGREF_PREDRV_DELAY (0x41e7 << 2)
> +#define TX_ANA_CTRL_REG_1 (0x5020 << 2)
> +#define TX_ANA_CTRL_REG_2 (0x5021 << 2)
> +#define TXDA_COEFF_CALC_CTRL (0x5022 << 2)
> +#define TX_DIG_CTRL_REG_2 (0x5024 << 2)
> +#define TXDA_CYA_AUXDA_CYA (0x5025 << 2)
> +#define TX_ANA_CTRL_REG_3 (0x5026 << 2)
> +#define TX_ANA_CTRL_REG_4 (0x5027 << 2)
> +#define TX_ANA_CTRL_REG_5 (0x5029 << 2)
> +
> +#define RX_PSC_A0(n) ((0x8000 | ((n) << 9)) << 2)
> +#define RX_PSC_A1(n) ((0x8001 | ((n) << 9)) << 2)
> +#define RX_PSC_A2(n) ((0x8002 | ((n) << 9)) << 2)
> +#define RX_PSC_A3(n) ((0x8003 | ((n) << 9)) << 2)
> +#define RX_PSC_CAL(n) ((0x8006 | ((n) << 9)) << 2)
> +#define RX_PSC_RDY(n) ((0x8007 | ((n) << 9)) << 2)
> +#define RX_IQPI_ILL_CAL_OVRD (0x8023 << 2)
> +#define RX_EPI_ILL_CAL_OVRD (0x8033 << 2)
> +#define RX_SDCAL0_OVRD (0x8041 << 2)
> +#define RX_SDCAL1_OVRD (0x8049 << 2)
> +#define RX_SLC_INIT (0x806d << 2)
> +#define RX_SLC_RUN (0x806e << 2)
> +#define RX_CDRLF_CNFG2 (0x8081 << 2)
> +#define RX_SIGDET_HL_FILT_TMR(n) ((0x8090 | ((n) << 9)) << 2)
> +#define RX_SLC_IOP0_OVRD (0x8101 << 2)
> +#define RX_SLC_IOP1_OVRD (0x8105 << 2)
> +#define RX_SLC_QOP0_OVRD (0x8109 << 2)
> +#define RX_SLC_QOP1_OVRD (0x810d << 2)
> +#define RX_SLC_EOP0_OVRD (0x8111 << 2)
> +#define RX_SLC_EOP1_OVRD (0x8115 << 2)
> +#define RX_SLC_ION0_OVRD (0x8119 << 2)
> +#define RX_SLC_ION1_OVRD (0x811d << 2)
> +#define RX_SLC_QON0_OVRD (0x8121 << 2)
> +#define RX_SLC_QON1_OVRD (0x8125 << 2)
> +#define RX_SLC_EON0_OVRD (0x8129 << 2)
> +#define RX_SLC_EON1_OVRD (0x812d << 2)
> +#define RX_SLC_IEP0_OVRD (0x8131 << 2)
> +#define RX_SLC_IEP1_OVRD (0x8135 << 2)
> +#define RX_SLC_QEP0_OVRD (0x8139 << 2)
> +#define RX_SLC_QEP1_OVRD (0x813d << 2)
> +#define RX_SLC_EEP0_OVRD (0x8141 << 2)
> +#define RX_SLC_EEP1_OVRD (0x8145 << 2)
> +#define RX_SLC_IEN0_OVRD (0x8149 << 2)
> +#define RX_SLC_IEN1_OVRD (0x814d << 2)
> +#define RX_SLC_QEN0_OVRD (0x8151 << 2)
> +#define RX_SLC_QEN1_OVRD (0x8155 << 2)
> +#define RX_SLC_EEN0_OVRD (0x8159 << 2)
> +#define RX_SLC_EEN1_OVRD (0x815d << 2)
> +#define RX_DIAG_SIGDET_TUNE(n) ((0x81dc | ((n) << 9)) << 2)
> +#define RX_DIAG_SC2C_DELAY (0x81e1 << 2)
> +
> +#define PMA_LANE_CFG (0xc000 << 2)
> +#define PIPE_CMN_CTRL1 (0xc001 << 2)
> +#define PIPE_CMN_CTRL2 (0xc002 << 2)
> +#define PIPE_COM_LOCK_CFG1 (0xc003 << 2)
> +#define PIPE_COM_LOCK_CFG2 (0xc004 << 2)
> +#define PIPE_RCV_DET_INH (0xc005 << 2)
> +#define DP_MODE_CTL (0xc008 << 2)
> +#define DP_CLK_CTL (0xc009 << 2)
> +#define STS (0xc00F << 2)
> +#define PHY_ISO_CMN_CTRL (0xc010 << 2)
> +#define PHY_DP_TX_CTL (0xc408 << 2)
> +#define PMA_CMN_CTRL1 (0xc800 << 2)
> +#define PHY_PMA_ISO_CMN_CTRL (0xc810 << 2)
> +#define PHY_ISOLATION_CTRL (0xc81f << 2)
> +#define PHY_PMA_ISO_XCVR_CTRL(n) ((0xcc11 | ((n) << 6)) << 2)
> +#define PHY_PMA_ISO_LINK_MODE(n) ((0xcc12 | ((n) << 6)) << 2)
> +#define PHY_PMA_ISO_PWRST_CTRL(n) ((0xcc13 | ((n) << 6)) << 2)
> +#define PHY_PMA_ISO_TX_DATA_LO(n) ((0xcc14 | ((n) << 6)) << 2)
> +#define PHY_PMA_ISO_TX_DATA_HI(n) ((0xcc15 | ((n) << 6)) << 2)
> +#define PHY_PMA_ISO_RX_DATA_LO(n) ((0xcc16 | ((n) << 6)) << 2)
> +#define PHY_PMA_ISO_RX_DATA_HI(n) ((0xcc17 | ((n) << 6)) << 2)
> +#define TX_BIST_CTRL(n) ((0x4140 | ((n) << 9)) << 2)
> +#define TX_BIST_UDDWR(n) ((0x4141 | ((n) << 9)) << 2)
Er.. it would have been nice if we had the capability to add all these
calibration data in dt and phy core just setting these.
Given that phy core doesn't have such functionality now, there is nothing much
we can do about that now :-( Maybe sometime later.
> +
> +/*
> + * Selects which PLL clock will be driven on the analog high speed
> + * clock 0: PLL 0 div 1
> + * clock 1: PLL 1 div 2
> + */
> +#define CLK_PLL_CONFIG 0X30
> +#define CLK_PLL_MASK 0x33
> +
> +#define CMN_READY BIT(0)
> +
> +#define DP_PLL_CLOCK_ENABLE BIT(2)
> +#define DP_PLL_ENABLE BIT(0)
> +#define DP_PLL_DATA_RATE_RBR ((2 << 12) | (4 << 8))
> +#define DP_PLL_DATA_RATE_HBR ((2 << 12) | (4 << 8))
> +#define DP_PLL_DATA_RATE_HBR2 ((1 << 12) | (2 << 8))
> +
> +#define DP_MODE_A0 BIT(4)
> +#define DP_MODE_A2 BIT(6)
> +#define DP_MODE_ENTER_A0 0xc101
> +#define DP_MODE_ENTER_A2 0xc104
> +
> +#define PHY_MODE_SET_TIMEOUT 100000
> +
> +#define PIN_ASSIGN_C_E 0x51d9
> +#define PIN_ASSIGN_D_F 0x5100
> +
> +#define MODE_DISCONNECT 0
> +#define MODE_UFP_USB BIT(0)
> +#define MODE_DFP_USB BIT(1)
> +#define MODE_DFP_DP BIT(2)
> +
> +struct usb3phy_reg {
> + u32 offset;
> + u32 enable_bit;
> + u32 write_enable;
> +};
> +
> +struct rockchip_usb3phy_port_cfg {
> + struct usb3phy_reg typec_conn_dir;
> + struct usb3phy_reg usb3tousb2_en;
> + struct usb3phy_reg external_psm;
> + struct usb3phy_reg pipe_status;
> +};
> +
> +struct rockchip_typec_phy {
> + struct device *dev;
> + void __iomem *base;
> + struct extcon_dev *extcon;
> + struct phy *phy[2];
> + struct regmap *grf_regs;
> + struct clk *clk_core;
> + struct clk *clk_ref;
> + struct reset_control *uphy_rst;
> + struct reset_control *pipe_rst;
> + struct reset_control *tcphy_rst;
> + struct rockchip_usb3phy_port_cfg port_cfgs;
> + /* mutex to protect access to individual PHYs */
> + struct mutex lock;
> +
> + bool flip;
> + u8 mode;
> +};
> +
> +struct phy_reg {
> + u16 value;
> + u32 addr;
> +};
> +
> +struct phy_reg usb_pll_cfg[] = {
> + { 0xf0, CMN_PLL0_VCOCAL_INIT },
> + { 0x18, CMN_PLL0_VCOCAL_ITER },
> + { 0xd0, CMN_PLL0_INTDIV },
> + { 0x4a4a, CMN_PLL0_FRACDIV },
> + { 0x34, CMN_PLL0_HIGH_THR },
> + { 0x1ee, CMN_PLL0_SS_CTRL1 },
> + { 0x7f03, CMN_PLL0_SS_CTRL2 },
> + { 0x20, CMN_PLL0_DSM_DIAG },
> + { 0, CMN_DIAG_PLL0_OVRD },
> + { 0, CMN_DIAG_PLL0_FBH_OVRD },
> + { 0, CMN_DIAG_PLL0_FBL_OVRD },
> + { 0x7, CMN_DIAG_PLL0_V2I_TUNE },
> + { 0x45, CMN_DIAG_PLL0_CP_TUNE },
> + { 0x8, CMN_DIAG_PLL0_LF_PROG },
> +};
> +
> +struct phy_reg dp_pll_cfg[] = {
> + { 0xf0, CMN_PLL1_VCOCAL_INIT },
> + { 0x18, CMN_PLL1_VCOCAL_ITER },
> + { 0x30b9, CMN_PLL1_VCOCAL_START },
> + { 0x21c, CMN_PLL1_INTDIV },
> + { 0, CMN_PLL1_FRACDIV },
> + { 0x5, CMN_PLL1_HIGH_THR },
> + { 0x35, CMN_PLL1_SS_CTRL1 },
> + { 0x7f1e, CMN_PLL1_SS_CTRL2 },
> + { 0x20, CMN_PLL1_DSM_DIAG },
> + { 0, CMN_PLLSM1_USER_DEF_CTRL },
> + { 0, CMN_DIAG_PLL1_OVRD },
> + { 0, CMN_DIAG_PLL1_FBH_OVRD },
> + { 0, CMN_DIAG_PLL1_FBL_OVRD },
> + { 0x6, CMN_DIAG_PLL1_V2I_TUNE },
> + { 0x45, CMN_DIAG_PLL1_CP_TUNE },
> + { 0x8, CMN_DIAG_PLL1_LF_PROG },
> + { 0x100, CMN_DIAG_PLL1_PTATIS_TUNE1 },
> + { 0x7, CMN_DIAG_PLL1_PTATIS_TUNE2 },
> + { 0x4, CMN_DIAG_PLL1_INCLK_CTRL },
> +};
> +
> +static void tcphy_cfg_24m(struct rockchip_typec_phy *tcphy)
> +{
> + u32 i, rdata;
> +
> + /*
> + * cmn_ref_clk_sel = 3, select the 24Mhz for clk parent
> + * cmn_psm_clk_dig_div = 2, set the clk division to 2
> + */
> + writel(0x830, tcphy->base + PMA_CMN_CTRL1);
> + for (i = 0; i < 4; i++) {
> + /*
> + * The following PHY configuration assumes a 24 MHz reference
> + * clock.
> + */
> + writel(0x90, tcphy->base + XCVR_DIAG_LANE_FCM_EN_MGN(i));
> + writel(0x960, tcphy->base + TX_RCVDET_EN_TMR(i));
> + writel(0x30, tcphy->base + TX_RCVDET_ST_TMR(i));
> + }
> +
> + rdata = readl(tcphy->base + CMN_DIAG_HSCLK_SEL);
> + rdata &= ~CLK_PLL_MASK;
> + rdata |= CLK_PLL_CONFIG;
> + writel(rdata, tcphy->base + CMN_DIAG_HSCLK_SEL);
> +}
> +
> +static void tcphy_cfg_usb_pll(struct rockchip_typec_phy *tcphy)
> +{
> + u32 i;
> +
> + /* load the configuration of PLL0 */
> + for (i = 0; i < ARRAY_SIZE(usb_pll_cfg); i++)
> + writel(usb_pll_cfg[i].value, tcphy->base + usb_pll_cfg[i].addr);
> +}
> +
> +static void tcphy_cfg_dp_pll(struct rockchip_typec_phy *tcphy)
> +{
> + u32 i;
> +
> + /* set the default mode to RBR */
> + writel(DP_PLL_CLOCK_ENABLE | DP_PLL_ENABLE | DP_PLL_DATA_RATE_RBR,
> + tcphy->base + DP_CLK_CTL);
> +
> + /* load the configuration of PLL1 */
> + for (i = 0; i < ARRAY_SIZE(dp_pll_cfg); i++)
> + writel(dp_pll_cfg[i].value, tcphy->base + dp_pll_cfg[i].addr);
> +}
> +
> +static void tcphy_tx_usb_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane)
> +{
> + writel(0x7799, tcphy->base + TX_PSC_A0(lane));
> + writel(0x7798, tcphy->base + TX_PSC_A1(lane));
> + writel(0x5098, tcphy->base + TX_PSC_A2(lane));
> + writel(0x5098, tcphy->base + TX_PSC_A3(lane));
> + writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_000(lane));
> + writel(0xbf, tcphy->base + XCVR_DIAG_BIDI_CTRL(lane));
> +}
> +
> +static void tcphy_rx_usb_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane)
> +{
> + writel(0xa6fd, tcphy->base + RX_PSC_A0(lane));
> + writel(0xa6fd, tcphy->base + RX_PSC_A1(lane));
> + writel(0xa410, tcphy->base + RX_PSC_A2(lane));
> + writel(0x2410, tcphy->base + RX_PSC_A3(lane));
> + writel(0x23ff, tcphy->base + RX_PSC_CAL(lane));
> + writel(0x13, tcphy->base + RX_SIGDET_HL_FILT_TMR(lane));
> + writel(0x1004, tcphy->base + RX_DIAG_SIGDET_TUNE(lane));
> + writel(0x2010, tcphy->base + RX_PSC_RDY(lane));
> + writel(0xfb, tcphy->base + XCVR_DIAG_BIDI_CTRL(lane));
> +}
> +
> +static void tcphy_dp_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane)
> +{
> + u16 rdata;
> +
> + writel(0xbefc, tcphy->base + XCVR_PSM_RCTRL(lane));
> + writel(0x6799, tcphy->base + TX_PSC_A0(lane));
> + writel(0x6798, tcphy->base + TX_PSC_A1(lane));
> + writel(0x98, tcphy->base + TX_PSC_A2(lane));
> + writel(0x98, tcphy->base + TX_PSC_A3(lane));
> +
> + writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_000(lane));
> + writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_001(lane));
> + writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_010(lane));
> + writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_011(lane));
> + writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_100(lane));
> + writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_101(lane));
> + writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_110(lane));
> + writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_111(lane));
> + writel(0, tcphy->base + TX_TXCC_CPOST_MULT_10(lane));
> + writel(0, tcphy->base + TX_TXCC_CPOST_MULT_01(lane));
> + writel(0, tcphy->base + TX_TXCC_CPOST_MULT_00(lane));
> + writel(0, tcphy->base + TX_TXCC_CPOST_MULT_11(lane));
> +
> + writel(0x128, tcphy->base + TX_TXCC_CAL_SCLR_MULT(lane));
> + writel(0x400, tcphy->base + TX_DIAG_TX_DRV(lane));
> +
> + rdata = readl(tcphy->base + XCVR_DIAG_PLLDRC_CTRL(lane));
> + rdata = (rdata & 0x8fff) | 0x6000;
> + writel(rdata, tcphy->base + XCVR_DIAG_PLLDRC_CTRL(lane));
> +}
> +
> +static inline int property_enable(struct rockchip_typec_phy *tcphy,
> + const struct usb3phy_reg *reg, bool en)
> +{
> + u32 mask = 1 << reg->write_enable;
> + u32 val = en << reg->enable_bit;
> +
> + return regmap_write(tcphy->grf_regs, reg->offset, val | mask);
> +}
> +
> +static void tcphy_dp_aux_calibration(struct rockchip_typec_phy *tcphy)
> +{
> + u16 rdata, rdata2, val;
> +
> + /* disable txda_cal_latch_en for rewrite the calibration values */
> + rdata = readl(tcphy->base + TX_ANA_CTRL_REG_1);
> + val = rdata & 0xdfff;
> + writel(val, tcphy->base + TX_ANA_CTRL_REG_1);
> +
> + /*
> + * read a resistor calibration code from CMN_TXPUCAL_CTRL[6:0] and
> + * write it to TX_DIG_CTRL_REG_2[6:0], and delay 1ms to make sure it
> + * works.
> + */
> + rdata = readl(tcphy->base + TX_DIG_CTRL_REG_2);
> + rdata = rdata & 0xffc0;
> +
> + rdata2 = readl(tcphy->base + CMN_TXPUCAL_CTRL);
> + rdata2 = rdata2 & 0x3f;
> +
> + val = rdata | rdata2;
> + writel(val, tcphy->base + TX_DIG_CTRL_REG_2);
> + usleep_range(1000, 1050);
> +
> + /*
> + * Enable signal for latch that sample and holds calibration values.
> + * Activate this signal for 1 clock cycle to sample new calibration
> + * values.
> + */
> + rdata = readl(tcphy->base + TX_ANA_CTRL_REG_1);
> + val = rdata | 0x2000;
> + writel(val, tcphy->base + TX_ANA_CTRL_REG_1);
> + usleep_range(150, 200);
> +
> + /* set TX Voltage Level and TX Deemphasis to 0 */
> + writel(0, tcphy->base + PHY_DP_TX_CTL);
> + /* re-enable decap */
> + writel(0x100, tcphy->base + TX_ANA_CTRL_REG_2);
> + writel(0x300, tcphy->base + TX_ANA_CTRL_REG_2);
> + writel(0x2008, tcphy->base + TX_ANA_CTRL_REG_1);
> + writel(0x2018, tcphy->base + TX_ANA_CTRL_REG_1);
> +
> + writel(0, tcphy->base + TX_ANA_CTRL_REG_5);
> +
> + /*
> + * Programs txda_drv_ldo_prog[15:0], Sets driver LDO
> + * voltage 16'h1001 for DP-AUX-TX and RX
> + */
> + writel(0x1001, tcphy->base + TX_ANA_CTRL_REG_4);
> +
> + /* re-enables Bandgap reference for LDO */
> + writel(0x2098, tcphy->base + TX_ANA_CTRL_REG_1);
> + writel(0x2198, tcphy->base + TX_ANA_CTRL_REG_1);
> +
> + /*
> + * re-enables the transmitter pre-driver, driver data selection MUX,
> + * and receiver detect circuits.
> + */
> + writel(0x301, tcphy->base + TX_ANA_CTRL_REG_2);
> + writel(0x303, tcphy->base + TX_ANA_CTRL_REG_2);
> +
> + /*
> + * BIT 12: Controls auxda_polarity, which selects the polarity of the
> + * xcvr:
> + * 1, Reverses the polarity (If TYPEC, Pulls ups aux_p and pull
> + * down aux_m)
> + * 0, Normal polarity (if TYPE_C, pulls up aux_m and pulls down
> + * aux_p)
> + */
> + val = 0xa078;
> + if (!tcphy->flip)
> + val |= BIT(12);
> + writel(val, tcphy->base + TX_ANA_CTRL_REG_1);
> +
> + writel(0, tcphy->base + TX_ANA_CTRL_REG_3);
> + writel(0, tcphy->base + TX_ANA_CTRL_REG_4);
> + writel(0, tcphy->base + TX_ANA_CTRL_REG_5);
> +
> + /*
> + * Controls low_power_swing_en, set the voltage swing of the driver
> + * to 400mv. The values below are peak to peak (differential) values.
> + */
> + writel(4, tcphy->base + TXDA_COEFF_CALC_CTRL);
> + writel(0, tcphy->base + TXDA_CYA_AUXDA_CYA);
> +
> + /* Controls tx_high_z_tm_en */
> + val = readl(tcphy->base + TX_DIG_CTRL_REG_2);
> + val |= BIT(15);
> + writel(val, tcphy->base + TX_DIG_CTRL_REG_2);
> +}
> +
> +static int tcphy_phy_init(struct rockchip_typec_phy *tcphy, u8 mode)
> +{
> + struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
> + int ret, i;
> + u32 val;
> +
> + ret = clk_prepare_enable(tcphy->clk_core);
> + if (ret) {
> + dev_err(tcphy->dev, "Failed to prepare_enable core clock\n");
> + return ret;
> + }
> +
> + ret = clk_prepare_enable(tcphy->clk_ref);
> + if (ret) {
> + dev_err(tcphy->dev, "Failed to prepare_enable ref clock\n");
> + goto err_clk_core;
> + }
> +
> + reset_control_deassert(tcphy->tcphy_rst);
> +
> + property_enable(tcphy, &cfg->typec_conn_dir, tcphy->flip);
> +
> + tcphy_cfg_24m(tcphy);
> +
> + if (mode == MODE_DFP_DP) {
> + tcphy_cfg_dp_pll(tcphy);
> + for (i = 0; i < 4; i++)
> + tcphy_dp_cfg_lane(tcphy, i);
> +
> + writel(PIN_ASSIGN_C_E, tcphy->base + PMA_LANE_CFG);
> + } else {
> + tcphy_cfg_usb_pll(tcphy);
> + tcphy_cfg_dp_pll(tcphy);
> + if (tcphy->flip) {
> + tcphy_tx_usb_cfg_lane(tcphy, 3);
> + tcphy_rx_usb_cfg_lane(tcphy, 2);
> + tcphy_dp_cfg_lane(tcphy, 0);
> + tcphy_dp_cfg_lane(tcphy, 1);
> + } else {
> + tcphy_tx_usb_cfg_lane(tcphy, 0);
> + tcphy_rx_usb_cfg_lane(tcphy, 1);
> + tcphy_dp_cfg_lane(tcphy, 2);
> + tcphy_dp_cfg_lane(tcphy, 3);
> + }
> +
> + writel(PIN_ASSIGN_D_F, tcphy->base + PMA_LANE_CFG);
> + }
> +
> + writel(DP_MODE_ENTER_A2, tcphy->base + DP_MODE_CTL);
> +
> + reset_control_deassert(tcphy->uphy_rst);
> +
> + ret = readx_poll_timeout(readl, tcphy->base + PMA_CMN_CTRL1,
> + val, val & CMN_READY, 10,
> + PHY_MODE_SET_TIMEOUT);
> + if (ret < 0) {
> + dev_err(tcphy->dev, "wait pma ready timeout\n");
> + ret = -ETIMEDOUT;
> + goto err_wait_pma;
> + }
> +
> + reset_control_deassert(tcphy->pipe_rst);
> +
> + return 0;
> +
> +err_wait_pma:
> + reset_control_assert(tcphy->uphy_rst);
> + reset_control_assert(tcphy->tcphy_rst);
> + clk_disable_unprepare(tcphy->clk_ref);
> +err_clk_core:
> + clk_disable_unprepare(tcphy->clk_core);
> + return ret;
> +}
> +
> +static void tcphy_phy_deinit(struct rockchip_typec_phy *tcphy)
> +{
> + reset_control_assert(tcphy->tcphy_rst);
> + reset_control_assert(tcphy->uphy_rst);
> + reset_control_assert(tcphy->pipe_rst);
> + clk_disable_unprepare(tcphy->clk_core);
> + clk_disable_unprepare(tcphy->clk_ref);
> +}
> +
> +static int tcphy_get_mode(struct rockchip_typec_phy *tcphy)
> +{
> + struct extcon_dev *edev = tcphy->extcon;
> + union extcon_property_value property;
> + unsigned int id;
> + bool dfp, ufp, dp;
> + u8 mode;
> + int ret;
> +
> + ufp = extcon_get_state(edev, EXTCON_USB);
> + dfp = extcon_get_state(edev, EXTCON_USB_HOST);
> + dp = extcon_get_state(edev, EXTCON_DISP_DP);
> +
> + mode = MODE_DFP_USB;
> + id = EXTCON_USB_HOST;
> +
> + if (ufp) {
> + mode = MODE_UFP_USB;
> + id = EXTCON_USB;
> + } else if (dfp && dp) {
> + mode = MODE_DFP_USB | MODE_DFP_DP;
> + } else if (dp) {
> + mode = MODE_DFP_DP;
> + id = EXTCON_DISP_DP;
> + }
> +
> + ret = extcon_get_property(edev, id, EXTCON_PROP_USB_TYPEC_POLARITY,
> + &property);
> + if (ret) {
> + dev_err(tcphy->dev, "get property failed\n");
> + return ret;
> + }
> +
> + tcphy->flip = property.intval ? 1 : 0;
> +
> + return mode;
> +}
> +
> +static int rockchip_usb3_phy_power_on(struct phy *phy)
> +{
> + struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
> + struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
> + const struct usb3phy_reg *reg = &cfg->pipe_status;
> + int timeout, new_mode, ret = 0;
> + u32 val;
> +
> + mutex_lock(&tcphy->lock);
> +
> + new_mode = tcphy_get_mode(tcphy);
> + if (new_mode < 0) {
> + ret = new_mode;
> + goto unlock_ret;
> + }
> +
> + if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB))) {
> + ret = -ENODEV;
> + goto unlock_ret;
> + }
> +
> + if (tcphy->mode == new_mode)
> + goto unlock_ret;
> +
> + if (tcphy->mode == MODE_DISCONNECT)
> + tcphy_phy_init(tcphy, new_mode);
> +
> + /* wait TCPHY for pipe ready */
> + for (timeout = 0; timeout < 100; timeout++) {
> + regmap_read(tcphy->grf_regs, reg->offset, &val);
> + if (!(val & BIT(reg->enable_bit))) {
> + tcphy->mode |= new_mode & (MODE_DFP_USB | MODE_UFP_USB);
> + goto unlock_ret;
> + }
> + usleep_range(10, 20);
> + }
> +
> + if (tcphy->mode == MODE_DISCONNECT)
> + tcphy_phy_deinit(tcphy);
> +
> + ret = -ETIMEDOUT;
> +
> +unlock_ret:
> + mutex_unlock(&tcphy->lock);
> + return ret;
> +}
> +
> +static int rockchip_usb3_phy_power_off(struct phy *phy)
> +{
> + struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
> +
> + mutex_lock(&tcphy->lock);
> +
> + if (tcphy->mode == MODE_DISCONNECT)
> + goto unlock;
> +
> + tcphy->mode &= ~(MODE_UFP_USB | MODE_DFP_USB);
> + if (tcphy->mode == MODE_DISCONNECT)
> + tcphy_phy_deinit(tcphy);
> +
> +unlock:
> + mutex_unlock(&tcphy->lock);
> + return 0;
> +}
> +
> +static const struct phy_ops rockchip_usb3_phy_ops = {
> + .power_on = rockchip_usb3_phy_power_on,
> + .power_off = rockchip_usb3_phy_power_off,
> + .owner = THIS_MODULE,
> +};
> +
> +static int rockchip_dp_phy_power_on(struct phy *phy)
> +{
> + struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
> + int new_mode, ret = 0;
> + u32 val;
> +
> + mutex_lock(&tcphy->lock);
> +
> + new_mode = tcphy_get_mode(tcphy);
> + if (new_mode < 0) {
> + ret = new_mode;
> + goto unlock_ret;
> + }
> +
> + if (!(new_mode & MODE_DFP_DP)) {
> + ret = -ENODEV;
> + goto unlock_ret;
> + }
> +
> + if (tcphy->mode == new_mode)
> + goto unlock_ret;
> +
> + /*
> + * If the PHY has been power on, but the mode is not DP only mode,
> + * re-init the PHY for setting all of 4 lanes to DP.
> + */
> + if (new_mode == MODE_DFP_DP && tcphy->mode != MODE_DISCONNECT) {
> + tcphy_phy_deinit(tcphy);
> + tcphy_phy_init(tcphy, new_mode);
> + } else if (tcphy->mode == MODE_DISCONNECT) {
> + tcphy_phy_init(tcphy, new_mode);
> + }
> +
> + ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL,
> + val, val & DP_MODE_A2, 1000,
> + PHY_MODE_SET_TIMEOUT);
> + if (ret < 0) {
> + dev_err(tcphy->dev, "failed to wait TCPHY enter A2\n");
> + goto power_on_finish;
> + }
> +
> + tcphy_dp_aux_calibration(tcphy);
> +
> + writel(DP_MODE_ENTER_A0, tcphy->base + DP_MODE_CTL);
> +
> + ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL,
> + val, val & DP_MODE_A0, 1000,
> + PHY_MODE_SET_TIMEOUT);
> + if (ret < 0) {
> + writel(DP_MODE_ENTER_A2, tcphy->base + DP_MODE_CTL);
> + dev_err(tcphy->dev, "failed to wait TCPHY enter A0\n");
> + goto power_on_finish;
> + }
> +
> + tcphy->mode |= MODE_DFP_DP;
> +
> +power_on_finish:
> + if (tcphy->mode == MODE_DISCONNECT)
> + tcphy_phy_deinit(tcphy);
> +unlock_ret:
> + mutex_unlock(&tcphy->lock);
> + return ret;
> +}
> +
> +static int rockchip_dp_phy_power_off(struct phy *phy)
> +{
> + struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
> +
> + mutex_lock(&tcphy->lock);
> +
> + if (tcphy->mode == MODE_DISCONNECT)
> + goto unlock;
> +
> + tcphy->mode &= ~MODE_DFP_DP;
> +
> + writel(DP_MODE_ENTER_A2, tcphy->base + DP_MODE_CTL);
> +
> + if (tcphy->mode == MODE_DISCONNECT)
> + tcphy_phy_deinit(tcphy);
> +
> +unlock:
> + mutex_unlock(&tcphy->lock);
> + return 0;
> +}
> +
> +static const struct phy_ops rockchip_dp_phy_ops = {
> + .power_on = rockchip_dp_phy_power_on,
> + .power_off = rockchip_dp_phy_power_off,
> + .owner = THIS_MODULE,
> +};
> +
> +static int tcphy_get_param(struct device *dev,
> + struct usb3phy_reg *reg,
> + const char *name)
> +{
> + u32 buffer[3];
> + int ret;
> +
> + ret = of_property_read_u32_array(dev->of_node, name, buffer, 3);
> + if (ret) {
> + dev_err(dev, "Can not parse %s\n", name);
> + return ret;
> + }
> +
> + reg->offset = buffer[0];
> + reg->enable_bit = buffer[1];
> + reg->write_enable = buffer[2];
> + return 0;
> +}
> +
> +static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy,
> + struct device *dev)
> +{
> + struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
> + int ret;
> +
> + ret = tcphy_get_param(dev, &cfg->typec_conn_dir,
> + "rockchip,typec-conn-dir");
> + if (ret)
> + return ret;
> +
> + ret = tcphy_get_param(dev, &cfg->usb3tousb2_en,
> + "rockchip,usb3tousb2-en");
> + if (ret)
> + return ret;
> +
> + ret = tcphy_get_param(dev, &cfg->external_psm,
> + "rockchip,external-psm");
> + if (ret)
> + return ret;
> +
> + ret = tcphy_get_param(dev, &cfg->pipe_status,
> + "rockchip,pipe-status");
> + if (ret)
> + return ret;
> +
> + tcphy->grf_regs = syscon_regmap_lookup_by_phandle(dev->of_node,
> + "rockchip,grf");
> + if (IS_ERR(tcphy->grf_regs)) {
> + dev_err(dev, "could not find grf dt node\n");
> + return PTR_ERR(tcphy->grf_regs);
> + }
> +
> + tcphy->clk_core = devm_clk_get(dev, "tcpdcore");
> + if (IS_ERR(tcphy->clk_core)) {
> + dev_err(dev, "could not get uphy core clock\n");
> + return PTR_ERR(tcphy->clk_core);
> + }
> +
> + tcphy->clk_ref = devm_clk_get(dev, "tcpdphy-ref");
> + if (IS_ERR(tcphy->clk_ref)) {
> + dev_err(dev, "could not get uphy ref clock\n");
> + return PTR_ERR(tcphy->clk_ref);
> + }
> +
> + tcphy->uphy_rst = devm_reset_control_get(dev, "uphy");
> + if (IS_ERR(tcphy->uphy_rst)) {
> + dev_err(dev, "no uphy_rst reset control found\n");
> + return PTR_ERR(tcphy->uphy_rst);
> + }
> +
> + tcphy->pipe_rst = devm_reset_control_get(dev, "uphy-pipe");
> + if (IS_ERR(tcphy->pipe_rst)) {
> + dev_err(dev, "no pipe_rst reset control found\n");
> + return PTR_ERR(tcphy->pipe_rst);
> + }
> +
> + tcphy->tcphy_rst = devm_reset_control_get(dev, "uphy-tcphy");
> + if (IS_ERR(tcphy->tcphy_rst)) {
> + dev_err(dev, "no tcphy_rst reset control found\n");
> + return PTR_ERR(tcphy->tcphy_rst);
> + }
Looks like there is a clear demarcation between usb phy and dp phy. I think it
would be cleaner to model something like phy-miphy365x
See
Documentation/devicetree/bindings/phy/phy-miphy365x.txt
drivers/phy/phy-miphy365x.c
Thanks
Kishon
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