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kernel/drivers/phy/marvell/phy-mvebu-cp110-comphy.c
tqcq e5480701d3 init repo.
2024-07-22 17:22:30 +08:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2017 Marvell
*
* Antoine Tenart <antoine.tenart@free-electrons.com>
*/
#include <linux/arm-smccc.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/phy.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
/* Relative to priv->base */
#define MVEBU_COMPHY_SERDES_CFG0(n) (0x0 + (n) * 0x1000)
#define MVEBU_COMPHY_SERDES_CFG0_PU_PLL BIT(1)
#define MVEBU_COMPHY_SERDES_CFG0_GEN_RX(n) ((n) << 3)
#define MVEBU_COMPHY_SERDES_CFG0_GEN_TX(n) ((n) << 7)
#define MVEBU_COMPHY_SERDES_CFG0_PU_RX BIT(11)
#define MVEBU_COMPHY_SERDES_CFG0_PU_TX BIT(12)
#define MVEBU_COMPHY_SERDES_CFG0_HALF_BUS BIT(14)
#define MVEBU_COMPHY_SERDES_CFG0_RXAUI_MODE BIT(15)
#define MVEBU_COMPHY_SERDES_CFG1(n) (0x4 + (n) * 0x1000)
#define MVEBU_COMPHY_SERDES_CFG1_RESET BIT(3)
#define MVEBU_COMPHY_SERDES_CFG1_RX_INIT BIT(4)
#define MVEBU_COMPHY_SERDES_CFG1_CORE_RESET BIT(5)
#define MVEBU_COMPHY_SERDES_CFG1_RF_RESET BIT(6)
#define MVEBU_COMPHY_SERDES_CFG2(n) (0x8 + (n) * 0x1000)
#define MVEBU_COMPHY_SERDES_CFG2_DFE_EN BIT(4)
#define MVEBU_COMPHY_SERDES_STATUS0(n) (0x18 + (n) * 0x1000)
#define MVEBU_COMPHY_SERDES_STATUS0_TX_PLL_RDY BIT(2)
#define MVEBU_COMPHY_SERDES_STATUS0_RX_PLL_RDY BIT(3)
#define MVEBU_COMPHY_SERDES_STATUS0_RX_INIT BIT(4)
#define MVEBU_COMPHY_PWRPLL_CTRL(n) (0x804 + (n) * 0x1000)
#define MVEBU_COMPHY_PWRPLL_CTRL_RFREQ(n) ((n) << 0)
#define MVEBU_COMPHY_PWRPLL_PHY_MODE(n) ((n) << 5)
#define MVEBU_COMPHY_IMP_CAL(n) (0x80c + (n) * 0x1000)
#define MVEBU_COMPHY_IMP_CAL_TX_EXT(n) ((n) << 10)
#define MVEBU_COMPHY_IMP_CAL_TX_EXT_EN BIT(15)
#define MVEBU_COMPHY_DFE_RES(n) (0x81c + (n) * 0x1000)
#define MVEBU_COMPHY_DFE_RES_FORCE_GEN_TBL BIT(15)
#define MVEBU_COMPHY_COEF(n) (0x828 + (n) * 0x1000)
#define MVEBU_COMPHY_COEF_DFE_EN BIT(14)
#define MVEBU_COMPHY_COEF_DFE_CTRL BIT(15)
#define MVEBU_COMPHY_GEN1_S0(n) (0x834 + (n) * 0x1000)
#define MVEBU_COMPHY_GEN1_S0_TX_AMP(n) ((n) << 1)
#define MVEBU_COMPHY_GEN1_S0_TX_EMPH(n) ((n) << 7)
#define MVEBU_COMPHY_GEN1_S1(n) (0x838 + (n) * 0x1000)
#define MVEBU_COMPHY_GEN1_S1_RX_MUL_PI(n) ((n) << 0)
#define MVEBU_COMPHY_GEN1_S1_RX_MUL_PF(n) ((n) << 3)
#define MVEBU_COMPHY_GEN1_S1_RX_MUL_FI(n) ((n) << 6)
#define MVEBU_COMPHY_GEN1_S1_RX_MUL_FF(n) ((n) << 8)
#define MVEBU_COMPHY_GEN1_S1_RX_DFE_EN BIT(10)
#define MVEBU_COMPHY_GEN1_S1_RX_DIV(n) ((n) << 11)
#define MVEBU_COMPHY_GEN1_S2(n) (0x8f4 + (n) * 0x1000)
#define MVEBU_COMPHY_GEN1_S2_TX_EMPH(n) ((n) << 0)
#define MVEBU_COMPHY_GEN1_S2_TX_EMPH_EN BIT(4)
#define MVEBU_COMPHY_LOOPBACK(n) (0x88c + (n) * 0x1000)
#define MVEBU_COMPHY_LOOPBACK_DBUS_WIDTH(n) ((n) << 1)
#define MVEBU_COMPHY_VDD_CAL0(n) (0x908 + (n) * 0x1000)
#define MVEBU_COMPHY_VDD_CAL0_CONT_MODE BIT(15)
#define MVEBU_COMPHY_EXT_SELV(n) (0x914 + (n) * 0x1000)
#define MVEBU_COMPHY_EXT_SELV_RX_SAMPL(n) ((n) << 5)
#define MVEBU_COMPHY_MISC_CTRL0(n) (0x93c + (n) * 0x1000)
#define MVEBU_COMPHY_MISC_CTRL0_ICP_FORCE BIT(5)
#define MVEBU_COMPHY_MISC_CTRL0_REFCLK_SEL BIT(10)
#define MVEBU_COMPHY_RX_CTRL1(n) (0x940 + (n) * 0x1000)
#define MVEBU_COMPHY_RX_CTRL1_RXCLK2X_SEL BIT(11)
#define MVEBU_COMPHY_RX_CTRL1_CLK8T_EN BIT(12)
#define MVEBU_COMPHY_SPEED_DIV(n) (0x954 + (n) * 0x1000)
#define MVEBU_COMPHY_SPEED_DIV_TX_FORCE BIT(7)
#define MVEBU_SP_CALIB(n) (0x96c + (n) * 0x1000)
#define MVEBU_SP_CALIB_SAMPLER(n) ((n) << 8)
#define MVEBU_SP_CALIB_SAMPLER_EN BIT(12)
#define MVEBU_COMPHY_TX_SLEW_RATE(n) (0x974 + (n) * 0x1000)
#define MVEBU_COMPHY_TX_SLEW_RATE_EMPH(n) ((n) << 5)
#define MVEBU_COMPHY_TX_SLEW_RATE_SLC(n) ((n) << 10)
#define MVEBU_COMPHY_DTL_CTRL(n) (0x984 + (n) * 0x1000)
#define MVEBU_COMPHY_DTL_CTRL_DTL_FLOOP_EN BIT(2)
#define MVEBU_COMPHY_FRAME_DETECT0(n) (0xa14 + (n) * 0x1000)
#define MVEBU_COMPHY_FRAME_DETECT0_PATN(n) ((n) << 7)
#define MVEBU_COMPHY_FRAME_DETECT3(n) (0xa20 + (n) * 0x1000)
#define MVEBU_COMPHY_FRAME_DETECT3_LOST_TIMEOUT_EN BIT(12)
#define MVEBU_COMPHY_DME(n) (0xa28 + (n) * 0x1000)
#define MVEBU_COMPHY_DME_ETH_MODE BIT(7)
#define MVEBU_COMPHY_TRAINING0(n) (0xa68 + (n) * 0x1000)
#define MVEBU_COMPHY_TRAINING0_P2P_HOLD BIT(15)
#define MVEBU_COMPHY_TRAINING5(n) (0xaa4 + (n) * 0x1000)
#define MVEBU_COMPHY_TRAINING5_RX_TIMER(n) ((n) << 0)
#define MVEBU_COMPHY_TX_TRAIN_PRESET(n) (0xb1c + (n) * 0x1000)
#define MVEBU_COMPHY_TX_TRAIN_PRESET_16B_AUTO_EN BIT(8)
#define MVEBU_COMPHY_TX_TRAIN_PRESET_PRBS11 BIT(9)
#define MVEBU_COMPHY_GEN1_S3(n) (0xc40 + (n) * 0x1000)
#define MVEBU_COMPHY_GEN1_S3_FBCK_SEL BIT(9)
#define MVEBU_COMPHY_GEN1_S4(n) (0xc44 + (n) * 0x1000)
#define MVEBU_COMPHY_GEN1_S4_DFE_RES(n) ((n) << 8)
#define MVEBU_COMPHY_TX_PRESET(n) (0xc68 + (n) * 0x1000)
#define MVEBU_COMPHY_TX_PRESET_INDEX(n) ((n) << 0)
#define MVEBU_COMPHY_GEN1_S5(n) (0xd38 + (n) * 0x1000)
#define MVEBU_COMPHY_GEN1_S5_ICP(n) ((n) << 0)
/* Relative to priv->regmap */
#define MVEBU_COMPHY_CONF1(n) (0x1000 + (n) * 0x28)
#define MVEBU_COMPHY_CONF1_PWRUP BIT(1)
#define MVEBU_COMPHY_CONF1_USB_PCIE BIT(2) /* 0: Ethernet/SATA */
#define MVEBU_COMPHY_CONF6(n) (0x1014 + (n) * 0x28)
#define MVEBU_COMPHY_CONF6_40B BIT(18)
#define MVEBU_COMPHY_SELECTOR 0x1140
#define MVEBU_COMPHY_SELECTOR_PHY(n) ((n) * 0x4)
#define MVEBU_COMPHY_PIPE_SELECTOR 0x1144
#define MVEBU_COMPHY_PIPE_SELECTOR_PIPE(n) ((n) * 0x4)
#define MVEBU_COMPHY_SD1_CTRL1 0x1148
#define MVEBU_COMPHY_SD1_CTRL1_RXAUI1_EN BIT(26)
#define MVEBU_COMPHY_SD1_CTRL1_RXAUI0_EN BIT(27)
#define MVEBU_COMPHY_LANES 6
#define MVEBU_COMPHY_PORTS 3
#define COMPHY_SIP_POWER_ON 0x82000001
#define COMPHY_SIP_POWER_OFF 0x82000002
/*
* A lane is described by the following bitfields:
* [ 1- 0]: COMPHY polarity invertion
* [ 2- 7]: COMPHY speed
* [ 5-11]: COMPHY port index
* [12-16]: COMPHY mode
* [17]: Clock source
* [18-20]: PCIe width (x1, x2, x4)
*/
#define COMPHY_FW_POL_OFFSET 0
#define COMPHY_FW_POL_MASK GENMASK(1, 0)
#define COMPHY_FW_SPEED_OFFSET 2
#define COMPHY_FW_SPEED_MASK GENMASK(7, 2)
#define COMPHY_FW_SPEED_MAX COMPHY_FW_SPEED_MASK
#define COMPHY_FW_SPEED_1250 0
#define COMPHY_FW_SPEED_3125 2
#define COMPHY_FW_SPEED_5000 3
#define COMPHY_FW_SPEED_103125 6
#define COMPHY_FW_PORT_OFFSET 8
#define COMPHY_FW_PORT_MASK GENMASK(11, 8)
#define COMPHY_FW_MODE_OFFSET 12
#define COMPHY_FW_MODE_MASK GENMASK(16, 12)
#define COMPHY_FW_WIDTH_OFFSET 18
#define COMPHY_FW_WIDTH_MASK GENMASK(20, 18)
#define COMPHY_FW_PARAM_FULL(mode, port, speed, pol, width) \
((((pol) << COMPHY_FW_POL_OFFSET) & COMPHY_FW_POL_MASK) | \
(((mode) << COMPHY_FW_MODE_OFFSET) & COMPHY_FW_MODE_MASK) | \
(((port) << COMPHY_FW_PORT_OFFSET) & COMPHY_FW_PORT_MASK) | \
(((speed) << COMPHY_FW_SPEED_OFFSET) & COMPHY_FW_SPEED_MASK) | \
(((width) << COMPHY_FW_WIDTH_OFFSET) & COMPHY_FW_WIDTH_MASK))
#define COMPHY_FW_PARAM(mode, port) \
COMPHY_FW_PARAM_FULL(mode, port, COMPHY_FW_SPEED_MAX, 0, 0)
#define COMPHY_FW_PARAM_ETH(mode, port, speed) \
COMPHY_FW_PARAM_FULL(mode, port, speed, 0, 0)
#define COMPHY_FW_PARAM_PCIE(mode, port, width) \
COMPHY_FW_PARAM_FULL(mode, port, COMPHY_FW_SPEED_5000, 0, width)
#define COMPHY_FW_MODE_SATA 0x1
#define COMPHY_FW_MODE_SGMII 0x2 /* SGMII 1G */
#define COMPHY_FW_MODE_2500BASEX 0x3 /* 2500BASE-X */
#define COMPHY_FW_MODE_USB3H 0x4
#define COMPHY_FW_MODE_USB3D 0x5
#define COMPHY_FW_MODE_PCIE 0x6
#define COMPHY_FW_MODE_RXAUI 0x7
#define COMPHY_FW_MODE_XFI 0x8 /* SFI: 0x9 (is treated like XFI) */
struct mvebu_comphy_conf {
enum phy_mode mode;
int submode;
unsigned lane;
unsigned port;
u32 mux;
u32 fw_mode;
};
#define ETH_CONF(_lane, _port, _submode, _mux, _fw) \
{ \
.lane = _lane, \
.port = _port, \
.mode = PHY_MODE_ETHERNET, \
.submode = _submode, \
.mux = _mux, \
.fw_mode = _fw, \
}
#define GEN_CONF(_lane, _port, _mode, _fw) \
{ \
.lane = _lane, \
.port = _port, \
.mode = _mode, \
.submode = PHY_INTERFACE_MODE_NA, \
.mux = -1, \
.fw_mode = _fw, \
}
static const struct mvebu_comphy_conf mvebu_comphy_cp110_modes[] = {
/* lane 0 */
GEN_CONF(0, 0, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
ETH_CONF(0, 1, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
ETH_CONF(0, 1, PHY_INTERFACE_MODE_2500BASEX, 0x1, COMPHY_FW_MODE_2500BASEX),
GEN_CONF(0, 1, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
/* lane 1 */
GEN_CONF(1, 0, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
GEN_CONF(1, 0, PHY_MODE_USB_DEVICE_SS, COMPHY_FW_MODE_USB3D),
GEN_CONF(1, 0, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
GEN_CONF(1, 0, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
ETH_CONF(1, 2, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
ETH_CONF(1, 2, PHY_INTERFACE_MODE_2500BASEX, 0x1, COMPHY_FW_MODE_2500BASEX),
/* lane 2 */
ETH_CONF(2, 0, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
ETH_CONF(2, 0, PHY_INTERFACE_MODE_2500BASEX, 0x1, COMPHY_FW_MODE_2500BASEX),
ETH_CONF(2, 0, PHY_INTERFACE_MODE_RXAUI, 0x1, COMPHY_FW_MODE_RXAUI),
ETH_CONF(2, 0, PHY_INTERFACE_MODE_10GBASER, 0x1, COMPHY_FW_MODE_XFI),
GEN_CONF(2, 0, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
GEN_CONF(2, 0, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
GEN_CONF(2, 0, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
/* lane 3 */
GEN_CONF(3, 0, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
ETH_CONF(3, 1, PHY_INTERFACE_MODE_SGMII, 0x2, COMPHY_FW_MODE_SGMII),
ETH_CONF(3, 1, PHY_INTERFACE_MODE_2500BASEX, 0x2, COMPHY_FW_MODE_2500BASEX),
ETH_CONF(3, 1, PHY_INTERFACE_MODE_RXAUI, 0x1, COMPHY_FW_MODE_RXAUI),
GEN_CONF(3, 1, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
GEN_CONF(3, 1, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
/* lane 4 */
ETH_CONF(4, 0, PHY_INTERFACE_MODE_SGMII, 0x2, COMPHY_FW_MODE_SGMII),
ETH_CONF(4, 0, PHY_INTERFACE_MODE_2500BASEX, 0x2, COMPHY_FW_MODE_2500BASEX),
ETH_CONF(4, 0, PHY_INTERFACE_MODE_10GBASER, 0x2, COMPHY_FW_MODE_XFI),
ETH_CONF(4, 0, PHY_INTERFACE_MODE_RXAUI, 0x2, COMPHY_FW_MODE_RXAUI),
GEN_CONF(4, 0, PHY_MODE_USB_DEVICE_SS, COMPHY_FW_MODE_USB3D),
GEN_CONF(4, 1, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
GEN_CONF(4, 1, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
ETH_CONF(4, 1, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
ETH_CONF(4, 1, PHY_INTERFACE_MODE_2500BASEX, -1, COMPHY_FW_MODE_2500BASEX),
ETH_CONF(4, 1, PHY_INTERFACE_MODE_10GBASER, -1, COMPHY_FW_MODE_XFI),
/* lane 5 */
ETH_CONF(5, 1, PHY_INTERFACE_MODE_RXAUI, 0x2, COMPHY_FW_MODE_RXAUI),
GEN_CONF(5, 1, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
ETH_CONF(5, 2, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
ETH_CONF(5, 2, PHY_INTERFACE_MODE_2500BASEX, 0x1, COMPHY_FW_MODE_2500BASEX),
GEN_CONF(5, 2, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
};
struct mvebu_comphy_priv {
void __iomem *base;
struct regmap *regmap;
struct device *dev;
struct clk *mg_domain_clk;
struct clk *mg_core_clk;
struct clk *axi_clk;
unsigned long cp_phys;
};
struct mvebu_comphy_lane {
struct mvebu_comphy_priv *priv;
unsigned id;
enum phy_mode mode;
int submode;
int port;
};
static int mvebu_comphy_smc(unsigned long function, unsigned long phys,
unsigned long lane, unsigned long mode)
{
struct arm_smccc_res res;
s32 ret;
arm_smccc_smc(function, phys, lane, mode, 0, 0, 0, 0, &res);
ret = res.a0;
switch (ret) {
case SMCCC_RET_SUCCESS:
return 0;
case SMCCC_RET_NOT_SUPPORTED:
return -EOPNOTSUPP;
default:
return -EINVAL;
}
}
static int mvebu_comphy_get_mode(bool fw_mode, int lane, int port,
enum phy_mode mode, int submode)
{
int i, n = ARRAY_SIZE(mvebu_comphy_cp110_modes);
/* Ignore PCIe submode: it represents the width */
bool ignore_submode = (mode == PHY_MODE_PCIE);
const struct mvebu_comphy_conf *conf;
/* Unused PHY mux value is 0x0 */
if (mode == PHY_MODE_INVALID)
return 0;
for (i = 0; i < n; i++) {
conf = &mvebu_comphy_cp110_modes[i];
if (conf->lane == lane &&
conf->port == port &&
conf->mode == mode &&
(conf->submode == submode || ignore_submode))
break;
}
if (i == n)
return -EINVAL;
if (fw_mode)
return conf->fw_mode;
else
return conf->mux;
}
static inline int mvebu_comphy_get_mux(int lane, int port,
enum phy_mode mode, int submode)
{
return mvebu_comphy_get_mode(false, lane, port, mode, submode);
}
static inline int mvebu_comphy_get_fw_mode(int lane, int port,
enum phy_mode mode, int submode)
{
return mvebu_comphy_get_mode(true, lane, port, mode, submode);
}
static int mvebu_comphy_ethernet_init_reset(struct mvebu_comphy_lane *lane)
{
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
regmap_read(priv->regmap, MVEBU_COMPHY_CONF1(lane->id), &val);
val &= ~MVEBU_COMPHY_CONF1_USB_PCIE;
val |= MVEBU_COMPHY_CONF1_PWRUP;
regmap_write(priv->regmap, MVEBU_COMPHY_CONF1(lane->id), val);
/* Select baud rates and PLLs */
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG0(lane->id));
val &= ~(MVEBU_COMPHY_SERDES_CFG0_PU_PLL |
MVEBU_COMPHY_SERDES_CFG0_PU_RX |
MVEBU_COMPHY_SERDES_CFG0_PU_TX |
MVEBU_COMPHY_SERDES_CFG0_HALF_BUS |
MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0xf) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0xf) |
MVEBU_COMPHY_SERDES_CFG0_RXAUI_MODE);
switch (lane->submode) {
case PHY_INTERFACE_MODE_10GBASER:
val |= MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0xe) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0xe);
break;
case PHY_INTERFACE_MODE_RXAUI:
val |= MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0xb) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0xb) |
MVEBU_COMPHY_SERDES_CFG0_RXAUI_MODE;
break;
case PHY_INTERFACE_MODE_2500BASEX:
val |= MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0x8) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0x8) |
MVEBU_COMPHY_SERDES_CFG0_HALF_BUS;
break;
case PHY_INTERFACE_MODE_SGMII:
val |= MVEBU_COMPHY_SERDES_CFG0_GEN_RX(0x6) |
MVEBU_COMPHY_SERDES_CFG0_GEN_TX(0x6) |
MVEBU_COMPHY_SERDES_CFG0_HALF_BUS;
break;
default:
dev_err(priv->dev,
"unsupported comphy submode (%d) on lane %d\n",
lane->submode,
lane->id);
return -ENOTSUPP;
}
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG0(lane->id));
if (lane->submode == PHY_INTERFACE_MODE_RXAUI) {
regmap_read(priv->regmap, MVEBU_COMPHY_SD1_CTRL1, &val);
switch (lane->id) {
case 2:
case 3:
val |= MVEBU_COMPHY_SD1_CTRL1_RXAUI0_EN;
break;
case 4:
case 5:
val |= MVEBU_COMPHY_SD1_CTRL1_RXAUI1_EN;
break;
default:
dev_err(priv->dev,
"RXAUI is not supported on comphy lane %d\n",
lane->id);
return -EINVAL;
}
regmap_write(priv->regmap, MVEBU_COMPHY_SD1_CTRL1, val);
}
/* reset */
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
val &= ~(MVEBU_COMPHY_SERDES_CFG1_RESET |
MVEBU_COMPHY_SERDES_CFG1_CORE_RESET |
MVEBU_COMPHY_SERDES_CFG1_RF_RESET);
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
/* de-assert reset */
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
val |= MVEBU_COMPHY_SERDES_CFG1_RESET |
MVEBU_COMPHY_SERDES_CFG1_CORE_RESET;
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
/* wait until clocks are ready */
mdelay(1);
/* exlicitly disable 40B, the bits isn't clear on reset */
regmap_read(priv->regmap, MVEBU_COMPHY_CONF6(lane->id), &val);
val &= ~MVEBU_COMPHY_CONF6_40B;
regmap_write(priv->regmap, MVEBU_COMPHY_CONF6(lane->id), val);
/* refclk selection */
val = readl(priv->base + MVEBU_COMPHY_MISC_CTRL0(lane->id));
val &= ~MVEBU_COMPHY_MISC_CTRL0_REFCLK_SEL;
if (lane->submode == PHY_INTERFACE_MODE_10GBASER)
val |= MVEBU_COMPHY_MISC_CTRL0_ICP_FORCE;
writel(val, priv->base + MVEBU_COMPHY_MISC_CTRL0(lane->id));
/* power and pll selection */
val = readl(priv->base + MVEBU_COMPHY_PWRPLL_CTRL(lane->id));
val &= ~(MVEBU_COMPHY_PWRPLL_CTRL_RFREQ(0x1f) |
MVEBU_COMPHY_PWRPLL_PHY_MODE(0x7));
val |= MVEBU_COMPHY_PWRPLL_CTRL_RFREQ(0x1) |
MVEBU_COMPHY_PWRPLL_PHY_MODE(0x4);
writel(val, priv->base + MVEBU_COMPHY_PWRPLL_CTRL(lane->id));
val = readl(priv->base + MVEBU_COMPHY_LOOPBACK(lane->id));
val &= ~MVEBU_COMPHY_LOOPBACK_DBUS_WIDTH(0x7);
val |= MVEBU_COMPHY_LOOPBACK_DBUS_WIDTH(0x1);
writel(val, priv->base + MVEBU_COMPHY_LOOPBACK(lane->id));
return 0;
}
static int mvebu_comphy_init_plls(struct mvebu_comphy_lane *lane)
{
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
/* SERDES external config */
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG0(lane->id));
val |= MVEBU_COMPHY_SERDES_CFG0_PU_PLL |
MVEBU_COMPHY_SERDES_CFG0_PU_RX |
MVEBU_COMPHY_SERDES_CFG0_PU_TX;
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG0(lane->id));
/* check rx/tx pll */
readl_poll_timeout(priv->base + MVEBU_COMPHY_SERDES_STATUS0(lane->id),
val,
val & (MVEBU_COMPHY_SERDES_STATUS0_RX_PLL_RDY |
MVEBU_COMPHY_SERDES_STATUS0_TX_PLL_RDY),
1000, 150000);
if (!(val & (MVEBU_COMPHY_SERDES_STATUS0_RX_PLL_RDY |
MVEBU_COMPHY_SERDES_STATUS0_TX_PLL_RDY)))
return -ETIMEDOUT;
/* rx init */
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
val |= MVEBU_COMPHY_SERDES_CFG1_RX_INIT;
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
/* check rx */
readl_poll_timeout(priv->base + MVEBU_COMPHY_SERDES_STATUS0(lane->id),
val, val & MVEBU_COMPHY_SERDES_STATUS0_RX_INIT,
1000, 10000);
if (!(val & MVEBU_COMPHY_SERDES_STATUS0_RX_INIT))
return -ETIMEDOUT;
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
val &= ~MVEBU_COMPHY_SERDES_CFG1_RX_INIT;
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
return 0;
}
static int mvebu_comphy_set_mode_sgmii(struct phy *phy)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
int err;
err = mvebu_comphy_ethernet_init_reset(lane);
if (err)
return err;
val = readl(priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val &= ~MVEBU_COMPHY_RX_CTRL1_CLK8T_EN;
val |= MVEBU_COMPHY_RX_CTRL1_RXCLK2X_SEL;
writel(val, priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val = readl(priv->base + MVEBU_COMPHY_DTL_CTRL(lane->id));
val &= ~MVEBU_COMPHY_DTL_CTRL_DTL_FLOOP_EN;
writel(val, priv->base + MVEBU_COMPHY_DTL_CTRL(lane->id));
regmap_read(priv->regmap, MVEBU_COMPHY_CONF1(lane->id), &val);
val &= ~MVEBU_COMPHY_CONF1_USB_PCIE;
val |= MVEBU_COMPHY_CONF1_PWRUP;
regmap_write(priv->regmap, MVEBU_COMPHY_CONF1(lane->id), val);
val = readl(priv->base + MVEBU_COMPHY_GEN1_S0(lane->id));
val &= ~MVEBU_COMPHY_GEN1_S0_TX_EMPH(0xf);
val |= MVEBU_COMPHY_GEN1_S0_TX_EMPH(0x1);
writel(val, priv->base + MVEBU_COMPHY_GEN1_S0(lane->id));
return mvebu_comphy_init_plls(lane);
}
static int mvebu_comphy_set_mode_rxaui(struct phy *phy)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
int err;
err = mvebu_comphy_ethernet_init_reset(lane);
if (err)
return err;
val = readl(priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val |= MVEBU_COMPHY_RX_CTRL1_RXCLK2X_SEL |
MVEBU_COMPHY_RX_CTRL1_CLK8T_EN;
writel(val, priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val = readl(priv->base + MVEBU_COMPHY_DTL_CTRL(lane->id));
val |= MVEBU_COMPHY_DTL_CTRL_DTL_FLOOP_EN;
writel(val, priv->base + MVEBU_COMPHY_DTL_CTRL(lane->id));
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG2(lane->id));
val |= MVEBU_COMPHY_SERDES_CFG2_DFE_EN;
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG2(lane->id));
val = readl(priv->base + MVEBU_COMPHY_DFE_RES(lane->id));
val |= MVEBU_COMPHY_DFE_RES_FORCE_GEN_TBL;
writel(val, priv->base + MVEBU_COMPHY_DFE_RES(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S0(lane->id));
val &= ~MVEBU_COMPHY_GEN1_S0_TX_EMPH(0xf);
val |= MVEBU_COMPHY_GEN1_S0_TX_EMPH(0xd);
writel(val, priv->base + MVEBU_COMPHY_GEN1_S0(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S1(lane->id));
val &= ~(MVEBU_COMPHY_GEN1_S1_RX_MUL_PI(0x7) |
MVEBU_COMPHY_GEN1_S1_RX_MUL_PF(0x7));
val |= MVEBU_COMPHY_GEN1_S1_RX_MUL_PI(0x1) |
MVEBU_COMPHY_GEN1_S1_RX_MUL_PF(0x1) |
MVEBU_COMPHY_GEN1_S1_RX_DFE_EN;
writel(val, priv->base + MVEBU_COMPHY_GEN1_S1(lane->id));
val = readl(priv->base + MVEBU_COMPHY_COEF(lane->id));
val &= ~(MVEBU_COMPHY_COEF_DFE_EN | MVEBU_COMPHY_COEF_DFE_CTRL);
writel(val, priv->base + MVEBU_COMPHY_COEF(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S4(lane->id));
val &= ~MVEBU_COMPHY_GEN1_S4_DFE_RES(0x3);
val |= MVEBU_COMPHY_GEN1_S4_DFE_RES(0x1);
writel(val, priv->base + MVEBU_COMPHY_GEN1_S4(lane->id));
return mvebu_comphy_init_plls(lane);
}
static int mvebu_comphy_set_mode_10gbaser(struct phy *phy)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
int err;
err = mvebu_comphy_ethernet_init_reset(lane);
if (err)
return err;
val = readl(priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val |= MVEBU_COMPHY_RX_CTRL1_RXCLK2X_SEL |
MVEBU_COMPHY_RX_CTRL1_CLK8T_EN;
writel(val, priv->base + MVEBU_COMPHY_RX_CTRL1(lane->id));
val = readl(priv->base + MVEBU_COMPHY_DTL_CTRL(lane->id));
val |= MVEBU_COMPHY_DTL_CTRL_DTL_FLOOP_EN;
writel(val, priv->base + MVEBU_COMPHY_DTL_CTRL(lane->id));
/* Speed divider */
val = readl(priv->base + MVEBU_COMPHY_SPEED_DIV(lane->id));
val |= MVEBU_COMPHY_SPEED_DIV_TX_FORCE;
writel(val, priv->base + MVEBU_COMPHY_SPEED_DIV(lane->id));
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG2(lane->id));
val |= MVEBU_COMPHY_SERDES_CFG2_DFE_EN;
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG2(lane->id));
/* DFE resolution */
val = readl(priv->base + MVEBU_COMPHY_DFE_RES(lane->id));
val |= MVEBU_COMPHY_DFE_RES_FORCE_GEN_TBL;
writel(val, priv->base + MVEBU_COMPHY_DFE_RES(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S0(lane->id));
val &= ~(MVEBU_COMPHY_GEN1_S0_TX_AMP(0x1f) |
MVEBU_COMPHY_GEN1_S0_TX_EMPH(0xf));
val |= MVEBU_COMPHY_GEN1_S0_TX_AMP(0x1c) |
MVEBU_COMPHY_GEN1_S0_TX_EMPH(0xe);
writel(val, priv->base + MVEBU_COMPHY_GEN1_S0(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S2(lane->id));
val &= ~MVEBU_COMPHY_GEN1_S2_TX_EMPH(0xf);
val |= MVEBU_COMPHY_GEN1_S2_TX_EMPH_EN;
writel(val, priv->base + MVEBU_COMPHY_GEN1_S2(lane->id));
val = readl(priv->base + MVEBU_COMPHY_TX_SLEW_RATE(lane->id));
val |= MVEBU_COMPHY_TX_SLEW_RATE_EMPH(0x3) |
MVEBU_COMPHY_TX_SLEW_RATE_SLC(0x3f);
writel(val, priv->base + MVEBU_COMPHY_TX_SLEW_RATE(lane->id));
/* Impedance calibration */
val = readl(priv->base + MVEBU_COMPHY_IMP_CAL(lane->id));
val &= ~MVEBU_COMPHY_IMP_CAL_TX_EXT(0x1f);
val |= MVEBU_COMPHY_IMP_CAL_TX_EXT(0xe) |
MVEBU_COMPHY_IMP_CAL_TX_EXT_EN;
writel(val, priv->base + MVEBU_COMPHY_IMP_CAL(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S5(lane->id));
val &= ~MVEBU_COMPHY_GEN1_S5_ICP(0xf);
writel(val, priv->base + MVEBU_COMPHY_GEN1_S5(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S1(lane->id));
val &= ~(MVEBU_COMPHY_GEN1_S1_RX_MUL_PI(0x7) |
MVEBU_COMPHY_GEN1_S1_RX_MUL_PF(0x7) |
MVEBU_COMPHY_GEN1_S1_RX_MUL_FI(0x3) |
MVEBU_COMPHY_GEN1_S1_RX_MUL_FF(0x3));
val |= MVEBU_COMPHY_GEN1_S1_RX_DFE_EN |
MVEBU_COMPHY_GEN1_S1_RX_MUL_PI(0x2) |
MVEBU_COMPHY_GEN1_S1_RX_MUL_PF(0x2) |
MVEBU_COMPHY_GEN1_S1_RX_MUL_FF(0x1) |
MVEBU_COMPHY_GEN1_S1_RX_DIV(0x3);
writel(val, priv->base + MVEBU_COMPHY_GEN1_S1(lane->id));
val = readl(priv->base + MVEBU_COMPHY_COEF(lane->id));
val &= ~(MVEBU_COMPHY_COEF_DFE_EN | MVEBU_COMPHY_COEF_DFE_CTRL);
writel(val, priv->base + MVEBU_COMPHY_COEF(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S4(lane->id));
val &= ~MVEBU_COMPHY_GEN1_S4_DFE_RES(0x3);
val |= MVEBU_COMPHY_GEN1_S4_DFE_RES(0x1);
writel(val, priv->base + MVEBU_COMPHY_GEN1_S4(lane->id));
val = readl(priv->base + MVEBU_COMPHY_GEN1_S3(lane->id));
val |= MVEBU_COMPHY_GEN1_S3_FBCK_SEL;
writel(val, priv->base + MVEBU_COMPHY_GEN1_S3(lane->id));
/* rx training timer */
val = readl(priv->base + MVEBU_COMPHY_TRAINING5(lane->id));
val &= ~MVEBU_COMPHY_TRAINING5_RX_TIMER(0x3ff);
val |= MVEBU_COMPHY_TRAINING5_RX_TIMER(0x13);
writel(val, priv->base + MVEBU_COMPHY_TRAINING5(lane->id));
/* tx train peak to peak hold */
val = readl(priv->base + MVEBU_COMPHY_TRAINING0(lane->id));
val |= MVEBU_COMPHY_TRAINING0_P2P_HOLD;
writel(val, priv->base + MVEBU_COMPHY_TRAINING0(lane->id));
val = readl(priv->base + MVEBU_COMPHY_TX_PRESET(lane->id));
val &= ~MVEBU_COMPHY_TX_PRESET_INDEX(0xf);
val |= MVEBU_COMPHY_TX_PRESET_INDEX(0x2); /* preset coeff */
writel(val, priv->base + MVEBU_COMPHY_TX_PRESET(lane->id));
val = readl(priv->base + MVEBU_COMPHY_FRAME_DETECT3(lane->id));
val &= ~MVEBU_COMPHY_FRAME_DETECT3_LOST_TIMEOUT_EN;
writel(val, priv->base + MVEBU_COMPHY_FRAME_DETECT3(lane->id));
val = readl(priv->base + MVEBU_COMPHY_TX_TRAIN_PRESET(lane->id));
val |= MVEBU_COMPHY_TX_TRAIN_PRESET_16B_AUTO_EN |
MVEBU_COMPHY_TX_TRAIN_PRESET_PRBS11;
writel(val, priv->base + MVEBU_COMPHY_TX_TRAIN_PRESET(lane->id));
val = readl(priv->base + MVEBU_COMPHY_FRAME_DETECT0(lane->id));
val &= ~MVEBU_COMPHY_FRAME_DETECT0_PATN(0x1ff);
val |= MVEBU_COMPHY_FRAME_DETECT0_PATN(0x88);
writel(val, priv->base + MVEBU_COMPHY_FRAME_DETECT0(lane->id));
val = readl(priv->base + MVEBU_COMPHY_DME(lane->id));
val |= MVEBU_COMPHY_DME_ETH_MODE;
writel(val, priv->base + MVEBU_COMPHY_DME(lane->id));
val = readl(priv->base + MVEBU_COMPHY_VDD_CAL0(lane->id));
val |= MVEBU_COMPHY_VDD_CAL0_CONT_MODE;
writel(val, priv->base + MVEBU_COMPHY_VDD_CAL0(lane->id));
val = readl(priv->base + MVEBU_SP_CALIB(lane->id));
val &= ~MVEBU_SP_CALIB_SAMPLER(0x3);
val |= MVEBU_SP_CALIB_SAMPLER(0x3) |
MVEBU_SP_CALIB_SAMPLER_EN;
writel(val, priv->base + MVEBU_SP_CALIB(lane->id));
val &= ~MVEBU_SP_CALIB_SAMPLER_EN;
writel(val, priv->base + MVEBU_SP_CALIB(lane->id));
/* External rx regulator */
val = readl(priv->base + MVEBU_COMPHY_EXT_SELV(lane->id));
val &= ~MVEBU_COMPHY_EXT_SELV_RX_SAMPL(0x1f);
val |= MVEBU_COMPHY_EXT_SELV_RX_SAMPL(0x1a);
writel(val, priv->base + MVEBU_COMPHY_EXT_SELV(lane->id));
return mvebu_comphy_init_plls(lane);
}
static int mvebu_comphy_power_on_legacy(struct phy *phy)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
int ret, mux;
u32 val;
mux = mvebu_comphy_get_mux(lane->id, lane->port,
lane->mode, lane->submode);
if (mux < 0)
return -ENOTSUPP;
regmap_read(priv->regmap, MVEBU_COMPHY_PIPE_SELECTOR, &val);
val &= ~(0xf << MVEBU_COMPHY_PIPE_SELECTOR_PIPE(lane->id));
regmap_write(priv->regmap, MVEBU_COMPHY_PIPE_SELECTOR, val);
regmap_read(priv->regmap, MVEBU_COMPHY_SELECTOR, &val);
val &= ~(0xf << MVEBU_COMPHY_SELECTOR_PHY(lane->id));
val |= mux << MVEBU_COMPHY_SELECTOR_PHY(lane->id);
regmap_write(priv->regmap, MVEBU_COMPHY_SELECTOR, val);
switch (lane->submode) {
case PHY_INTERFACE_MODE_SGMII:
case PHY_INTERFACE_MODE_2500BASEX:
ret = mvebu_comphy_set_mode_sgmii(phy);
break;
case PHY_INTERFACE_MODE_RXAUI:
ret = mvebu_comphy_set_mode_rxaui(phy);
break;
case PHY_INTERFACE_MODE_10GBASER:
ret = mvebu_comphy_set_mode_10gbaser(phy);
break;
default:
return -ENOTSUPP;
}
/* digital reset */
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
val |= MVEBU_COMPHY_SERDES_CFG1_RF_RESET;
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
return ret;
}
static int mvebu_comphy_power_on(struct phy *phy)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
int fw_mode, fw_speed;
u32 fw_param = 0;
int ret;
fw_mode = mvebu_comphy_get_fw_mode(lane->id, lane->port,
lane->mode, lane->submode);
if (fw_mode < 0)
goto try_legacy;
/* Try SMC flow first */
switch (lane->mode) {
case PHY_MODE_ETHERNET:
switch (lane->submode) {
case PHY_INTERFACE_MODE_RXAUI:
dev_dbg(priv->dev, "set lane %d to RXAUI mode\n",
lane->id);
fw_speed = 0;
break;
case PHY_INTERFACE_MODE_SGMII:
dev_dbg(priv->dev, "set lane %d to 1000BASE-X mode\n",
lane->id);
fw_speed = COMPHY_FW_SPEED_1250;
break;
case PHY_INTERFACE_MODE_2500BASEX:
dev_dbg(priv->dev, "set lane %d to 2500BASE-X mode\n",
lane->id);
fw_speed = COMPHY_FW_SPEED_3125;
break;
case PHY_INTERFACE_MODE_10GBASER:
dev_dbg(priv->dev, "set lane %d to 10GBASE-R mode\n",
lane->id);
fw_speed = COMPHY_FW_SPEED_103125;
break;
default:
dev_err(priv->dev, "unsupported Ethernet mode (%d)\n",
lane->submode);
return -ENOTSUPP;
}
fw_param = COMPHY_FW_PARAM_ETH(fw_mode, lane->port, fw_speed);
break;
case PHY_MODE_USB_HOST_SS:
case PHY_MODE_USB_DEVICE_SS:
dev_dbg(priv->dev, "set lane %d to USB3 mode\n", lane->id);
fw_param = COMPHY_FW_PARAM(fw_mode, lane->port);
break;
case PHY_MODE_SATA:
dev_dbg(priv->dev, "set lane %d to SATA mode\n", lane->id);
fw_param = COMPHY_FW_PARAM(fw_mode, lane->port);
break;
case PHY_MODE_PCIE:
dev_dbg(priv->dev, "set lane %d to PCIe mode (x%d)\n", lane->id,
lane->submode);
fw_param = COMPHY_FW_PARAM_PCIE(fw_mode, lane->port,
lane->submode);
break;
default:
dev_err(priv->dev, "unsupported PHY mode (%d)\n", lane->mode);
return -ENOTSUPP;
}
ret = mvebu_comphy_smc(COMPHY_SIP_POWER_ON, priv->cp_phys, lane->id,
fw_param);
if (!ret)
return ret;
if (ret == -EOPNOTSUPP)
dev_err(priv->dev,
"unsupported SMC call, try updating your firmware\n");
dev_warn(priv->dev,
"Firmware could not configure PHY %d with mode %d (ret: %d), trying legacy method\n",
lane->id, lane->mode, ret);
try_legacy:
/* Fallback to Linux's implementation */
return mvebu_comphy_power_on_legacy(phy);
}
static int mvebu_comphy_set_mode(struct phy *phy,
enum phy_mode mode, int submode)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
if (submode == PHY_INTERFACE_MODE_1000BASEX)
submode = PHY_INTERFACE_MODE_SGMII;
if (mvebu_comphy_get_fw_mode(lane->id, lane->port, mode, submode) < 0)
return -EINVAL;
lane->mode = mode;
lane->submode = submode;
/* PCIe submode represents the width */
if (mode == PHY_MODE_PCIE && !lane->submode)
lane->submode = 1;
return 0;
}
static int mvebu_comphy_power_off_legacy(struct phy *phy)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
u32 val;
val = readl(priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
val &= ~(MVEBU_COMPHY_SERDES_CFG1_RESET |
MVEBU_COMPHY_SERDES_CFG1_CORE_RESET |
MVEBU_COMPHY_SERDES_CFG1_RF_RESET);
writel(val, priv->base + MVEBU_COMPHY_SERDES_CFG1(lane->id));
regmap_read(priv->regmap, MVEBU_COMPHY_SELECTOR, &val);
val &= ~(0xf << MVEBU_COMPHY_SELECTOR_PHY(lane->id));
regmap_write(priv->regmap, MVEBU_COMPHY_SELECTOR, val);
regmap_read(priv->regmap, MVEBU_COMPHY_PIPE_SELECTOR, &val);
val &= ~(0xf << MVEBU_COMPHY_PIPE_SELECTOR_PIPE(lane->id));
regmap_write(priv->regmap, MVEBU_COMPHY_PIPE_SELECTOR, val);
return 0;
}
static int mvebu_comphy_power_off(struct phy *phy)
{
struct mvebu_comphy_lane *lane = phy_get_drvdata(phy);
struct mvebu_comphy_priv *priv = lane->priv;
int ret;
ret = mvebu_comphy_smc(COMPHY_SIP_POWER_OFF, priv->cp_phys,
lane->id, 0);
if (!ret)
return ret;
/* Fallback to Linux's implementation */
return mvebu_comphy_power_off_legacy(phy);
}
static const struct phy_ops mvebu_comphy_ops = {
.power_on = mvebu_comphy_power_on,
.power_off = mvebu_comphy_power_off,
.set_mode = mvebu_comphy_set_mode,
.owner = THIS_MODULE,
};
static struct phy *mvebu_comphy_xlate(struct device *dev,
struct of_phandle_args *args)
{
struct mvebu_comphy_lane *lane;
struct phy *phy;
if (WARN_ON(args->args[0] >= MVEBU_COMPHY_PORTS))
return ERR_PTR(-EINVAL);
phy = of_phy_simple_xlate(dev, args);
if (IS_ERR(phy))
return phy;
lane = phy_get_drvdata(phy);
lane->port = args->args[0];
return phy;
}
static int mvebu_comphy_init_clks(struct mvebu_comphy_priv *priv)
{
int ret;
priv->mg_domain_clk = devm_clk_get(priv->dev, "mg_clk");
if (IS_ERR(priv->mg_domain_clk))
return PTR_ERR(priv->mg_domain_clk);
ret = clk_prepare_enable(priv->mg_domain_clk);
if (ret < 0)
return ret;
priv->mg_core_clk = devm_clk_get(priv->dev, "mg_core_clk");
if (IS_ERR(priv->mg_core_clk)) {
ret = PTR_ERR(priv->mg_core_clk);
goto dis_mg_domain_clk;
}
ret = clk_prepare_enable(priv->mg_core_clk);
if (ret < 0)
goto dis_mg_domain_clk;
priv->axi_clk = devm_clk_get(priv->dev, "axi_clk");
if (IS_ERR(priv->axi_clk)) {
ret = PTR_ERR(priv->axi_clk);
goto dis_mg_core_clk;
}
ret = clk_prepare_enable(priv->axi_clk);
if (ret < 0)
goto dis_mg_core_clk;
return 0;
dis_mg_core_clk:
clk_disable_unprepare(priv->mg_core_clk);
dis_mg_domain_clk:
clk_disable_unprepare(priv->mg_domain_clk);
priv->mg_domain_clk = NULL;
priv->mg_core_clk = NULL;
priv->axi_clk = NULL;
return ret;
};
static void mvebu_comphy_disable_unprepare_clks(struct mvebu_comphy_priv *priv)
{
if (priv->axi_clk)
clk_disable_unprepare(priv->axi_clk);
if (priv->mg_core_clk)
clk_disable_unprepare(priv->mg_core_clk);
if (priv->mg_domain_clk)
clk_disable_unprepare(priv->mg_domain_clk);
}
static int mvebu_comphy_probe(struct platform_device *pdev)
{
struct mvebu_comphy_priv *priv;
struct phy_provider *provider;
struct device_node *child;
struct resource *res;
int ret;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->dev = &pdev->dev;
priv->regmap =
syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"marvell,system-controller");
if (IS_ERR(priv->regmap))
return PTR_ERR(priv->regmap);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
priv->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
/*
* Ignore error if clocks have not been initialized properly for DT
* compatibility reasons.
*/
ret = mvebu_comphy_init_clks(priv);
if (ret) {
if (ret == -EPROBE_DEFER)
return ret;
dev_warn(&pdev->dev, "cannot initialize clocks\n");
}
/*
* Hack to retrieve a physical offset relative to this CP that will be
* given to the firmware
*/
priv->cp_phys = res->start;
for_each_available_child_of_node(pdev->dev.of_node, child) {
struct mvebu_comphy_lane *lane;
struct phy *phy;
u32 val;
ret = of_property_read_u32(child, "reg", &val);
if (ret < 0) {
dev_err(&pdev->dev, "missing 'reg' property (%d)\n",
ret);
continue;
}
if (val >= MVEBU_COMPHY_LANES) {
dev_err(&pdev->dev, "invalid 'reg' property\n");
continue;
}
lane = devm_kzalloc(&pdev->dev, sizeof(*lane), GFP_KERNEL);
if (!lane) {
of_node_put(child);
ret = -ENOMEM;
goto disable_clks;
}
phy = devm_phy_create(&pdev->dev, child, &mvebu_comphy_ops);
if (IS_ERR(phy)) {
of_node_put(child);
ret = PTR_ERR(phy);
goto disable_clks;
}
lane->priv = priv;
lane->mode = PHY_MODE_INVALID;
lane->submode = PHY_INTERFACE_MODE_NA;
lane->id = val;
lane->port = -1;
phy_set_drvdata(phy, lane);
/*
* All modes are supported in this driver so we could call
* mvebu_comphy_power_off(phy) here to avoid relying on the
* bootloader/firmware configuration, but for compatibility
* reasons we cannot de-configure the COMPHY without being sure
* that the firmware is up-to-date and fully-featured.
*/
}
dev_set_drvdata(&pdev->dev, priv);
provider = devm_of_phy_provider_register(&pdev->dev,
mvebu_comphy_xlate);
return PTR_ERR_OR_ZERO(provider);
disable_clks:
mvebu_comphy_disable_unprepare_clks(priv);
return ret;
}
static const struct of_device_id mvebu_comphy_of_match_table[] = {
{ .compatible = "marvell,comphy-cp110" },
{ },
};
MODULE_DEVICE_TABLE(of, mvebu_comphy_of_match_table);
static struct platform_driver mvebu_comphy_driver = {
.probe = mvebu_comphy_probe,
.driver = {
.name = "mvebu-comphy",
.of_match_table = mvebu_comphy_of_match_table,
},
};
module_platform_driver(mvebu_comphy_driver);
MODULE_AUTHOR("Antoine Tenart <antoine.tenart@free-electrons.com>");
MODULE_DESCRIPTION("Common PHY driver for mvebu SoCs");
MODULE_LICENSE("GPL v2");
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