// SPDX-License-Identifier: GPL-2.0
/*
* Rockchip PIPE USB3.0 PCIE SATA Combo Phy driver
*
* Copyright (C) 2021 Rockchip Electronics Co., Ltd.
*/
#include <dt-bindings/phy/phy.h>
#include <linux/clk.h>
#include <linux/mfd/syscon.h>
#include <linux/of.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <linux/units.h>
#define BIT_WRITEABLE_SHIFT 16
#define REF_CLOCK_24MHz (24 * HZ_PER_MHZ)
#define REF_CLOCK_25MHz (25 * HZ_PER_MHZ)
#define REF_CLOCK_100MHz (100 * HZ_PER_MHZ)
/* COMBO PHY REG */
#define PHYREG6 0x14
#define PHYREG6_PLL_DIV_MASK GENMASK(7, 6)
#define PHYREG6_PLL_DIV_SHIFT 6
#define PHYREG6_PLL_DIV_2 1
#define PHYREG7 0x18
#define PHYREG7_TX_RTERM_MASK GENMASK(7, 4)
#define PHYREG7_TX_RTERM_SHIFT 4
#define PHYREG7_TX_RTERM_50OHM 8
#define PHYREG7_RX_RTERM_MASK GENMASK(3, 0)
#define PHYREG7_RX_RTERM_SHIFT 0
#define PHYREG7_RX_RTERM_44OHM 15
#define PHYREG8 0x1C
#define PHYREG8_SSC_EN BIT(4)
#define PHYREG11 0x28
#define PHYREG11_SU_TRIM_0_7 0xF0
#define PHYREG12 0x2C
#define PHYREG12_PLL_LPF_ADJ_VALUE 4
#define PHYREG13 0x30
#define PHYREG13_RESISTER_MASK GENMASK(5, 4)
#define PHYREG13_RESISTER_SHIFT 0x4
#define PHYREG13_RESISTER_HIGH_Z 3
#define PHYREG13_CKRCV_AMP0 BIT(7)
#define PHYREG14 0x34
#define PHYREG14_CKRCV_AMP1 BIT(0)
#define PHYREG15 0x38
#define PHYREG15_CTLE_EN BIT(0)
#define PHYREG15_SSC_CNT_MASK GENMASK(7, 6)
#define PHYREG15_SSC_CNT_SHIFT 6
#define PHYREG15_SSC_CNT_VALUE 1
#define PHYREG16 0x3C
#define PHYREG16_SSC_CNT_VALUE 0x5f
#define PHYREG18 0x44
#define PHYREG18_PLL_LOOP 0x32
#define PHYREG27 0x6C
#define PHYREG27_RX_TRIM_RK3588 0x4C
#define PHYREG32 0x7C
#define PHYREG32_SSC_MASK GENMASK(7, 4)
#define PHYREG32_SSC_DIR_SHIFT 4
#define PHYREG32_SSC_UPWARD 0
#define PHYREG32_SSC_DOWNWARD 1
#define PHYREG32_SSC_OFFSET_SHIFT 6
#define PHYREG32_SSC_OFFSET_500PPM 1
#define PHYREG33 0x80
#define PHYREG33_PLL_KVCO_MASK GENMASK(4, 2)
#define PHYREG33_PLL_KVCO_SHIFT 2
#define PHYREG33_PLL_KVCO_VALUE 2
struct rockchip_combphy_priv;
struct combphy_reg {
u16 offset;
u16 bitend;
u16 bitstart;
u16 disable;
u16 enable;
};
struct rockchip_combphy_grfcfg {
struct combphy_reg pcie_mode_set;
struct combphy_reg usb_mode_set;
struct combphy_reg sgmii_mode_set;
struct combphy_reg qsgmii_mode_set;
struct combphy_reg pipe_rxterm_set;
struct combphy_reg pipe_txelec_set;
struct combphy_reg pipe_txcomp_set;
struct combphy_reg pipe_clk_25m;
struct combphy_reg pipe_clk_100m;
struct combphy_reg pipe_phymode_sel;
struct combphy_reg pipe_rate_sel;
struct combphy_reg pipe_rxterm_sel;
struct combphy_reg pipe_txelec_sel;
struct combphy_reg pipe_txcomp_sel;
struct combphy_reg pipe_clk_ext;
struct combphy_reg pipe_sel_usb;
struct combphy_reg pipe_sel_qsgmii;
struct combphy_reg pipe_phy_status;
struct combphy_reg con0_for_pcie;
struct combphy_reg con1_for_pcie;
struct combphy_reg con2_for_pcie;
struct combphy_reg con3_for_pcie;
struct combphy_reg con0_for_sata;
struct combphy_reg con1_for_sata;
struct combphy_reg con2_for_sata;
struct combphy_reg con3_for_sata;
struct combphy_reg pipe_con0_for_sata;
struct combphy_reg pipe_con1_for_sata;
struct combphy_reg pipe_xpcs_phy_ready;
struct combphy_reg pipe_pcie1l0_sel;
struct combphy_reg pipe_pcie1l1_sel;
};
struct rockchip_combphy_cfg {
unsigned int num_phys;
unsigned int phy_ids[3];
const struct rockchip_combphy_grfcfg *grfcfg;
int (*combphy_cfg)(struct rockchip_combphy_priv *priv);
};
struct rockchip_combphy_priv {
u8 type;
int id;
void __iomem *mmio;
int num_clks;
struct clk_bulk_data *clks;
struct device *dev;
struct regmap *pipe_grf;
struct regmap *phy_grf;
struct phy *phy;
struct reset_control *phy_rst;
const struct rockchip_combphy_cfg *cfg;
bool enable_ssc;
bool ext_refclk;
struct clk *refclk;
};
static void rockchip_combphy_updatel(struct rockchip_combphy_priv *priv,
int mask, int val, int reg)
{
unsigned int temp;
temp = readl(priv->mmio + reg);
temp = (temp & ~(mask)) | val;
writel(temp, priv->mmio + reg);
}
static int rockchip_combphy_param_write(struct regmap *base,
const struct combphy_reg *reg, bool en)
{
u32 val, mask, tmp;
tmp = en ? reg->enable : reg->disable;
mask = GENMASK(reg->bitend, reg->bitstart);
val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
return regmap_write(base, reg->offset, val);
}
static u32 rockchip_combphy_is_ready(struct rockchip_combphy_priv *priv)
{
const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg;
u32 mask, val;
mask = GENMASK(cfg->pipe_phy_status.bitend,
cfg->pipe_phy_status.bitstart);
regmap_read(priv->phy_grf, cfg->pipe_phy_status.offset, &val);
val = (val & mask) >> cfg->pipe_phy_status.bitstart;
return val;
}
static int rockchip_combphy_init(struct phy *phy)
{
struct rockchip_combphy_priv *priv = phy_get_drvdata(phy);
const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg;
u32 val;
int ret;
ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks);
if (ret) {
dev_err(priv->dev, "failed to enable clks\n");
return ret;
}
switch (priv->type) {
case PHY_TYPE_PCIE:
case PHY_TYPE_USB3:
case PHY_TYPE_SATA:
case PHY_TYPE_SGMII:
case PHY_TYPE_QSGMII:
if (priv->cfg->combphy_cfg)
ret = priv->cfg->combphy_cfg(priv);
break;
default:
dev_err(priv->dev, "incompatible PHY type\n");
ret = -EINVAL;
break;
}
if (ret) {
dev_err(priv->dev, "failed to init phy for phy type %x\n", priv->type);
goto err_clk;
}
ret = reset_control_deassert(priv->phy_rst);
if (ret)
goto err_clk;
if (priv->type == PHY_TYPE_USB3) {
ret = readx_poll_timeout_atomic(rockchip_combphy_is_ready,
priv, val,
val == cfg->pipe_phy_status.enable,
10, 1000);
if (ret)
dev_warn(priv->dev, "wait phy status ready timeout\n");
}
return 0;
err_clk:
clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
return ret;
}
static int rockchip_combphy_exit(struct phy *phy)
{
struct rockchip_combphy_priv *priv = phy_get_drvdata(phy);
clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
reset_control_assert(priv->phy_rst);
return 0;
}
static const struct phy_ops rockchip_combphy_ops = {
.init = rockchip_combphy_init,
.exit = rockchip_combphy_exit,
.owner = THIS_MODULE,
};
static struct phy *rockchip_combphy_xlate(struct device *dev, const struct of_phandle_args *args)
{
struct rockchip_combphy_priv *priv = dev_get_drvdata(dev);
if (args->args_count != 1) {
dev_err(dev, "invalid number of arguments\n");
return ERR_PTR(-EINVAL);
}
if (priv->type != PHY_NONE && priv->type != args->args[0])
dev_warn(dev, "phy type select %d overwriting type %d\n",
args->args[0], priv->type);
priv->type = args->args[0];
return priv->phy;
}
static int rockchip_combphy_parse_dt(struct device *dev, struct rockchip_combphy_priv *priv)
{
int i;
priv->num_clks = devm_clk_bulk_get_all(dev, &priv->clks);
if (priv->num_clks < 1)
return -EINVAL;
priv->refclk = NULL;
for (i = 0; i < priv->num_clks; i++) {
if (!strncmp(priv->clks[i].id, "ref", 3)) {
priv->refclk = priv->clks[i].clk;
break;
}
}
if (!priv->refclk) {
dev_err(dev, "no refclk found\n");
return -EINVAL;
}
priv->pipe_grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,pipe-grf");
if (IS_ERR(priv->pipe_grf)) {
dev_err(dev, "failed to find peri_ctrl pipe-grf regmap\n");
return PTR_ERR(priv->pipe_grf);
}
priv->phy_grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,pipe-phy-grf");
if (IS_ERR(priv->phy_grf)) {
dev_err(dev, "failed to find peri_ctrl pipe-phy-grf regmap\n");
return PTR_ERR(priv->phy_grf);
}
priv->enable_ssc = device_property_present(dev, "rockchip,enable-ssc");
priv->ext_refclk = device_property_present(dev, "rockchip,ext-refclk");
priv->phy_rst = devm_reset_control_array_get_exclusive(dev);
if (IS_ERR(priv->phy_rst))
return dev_err_probe(dev, PTR_ERR(priv->phy_rst), "failed to get phy reset\n");
return 0;
}
static int rockchip_combphy_probe(struct platform_device *pdev)
{
struct phy_provider *phy_provider;
struct device *dev = &pdev->dev;
struct rockchip_combphy_priv *priv;
const struct rockchip_combphy_cfg *phy_cfg;
struct resource *res;
int ret, id;
phy_cfg = of_device_get_match_data(dev);
if (!phy_cfg) {
dev_err(dev, "no OF match data provided\n");
return -EINVAL;
}
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->mmio = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(priv->mmio)) {
ret = PTR_ERR(priv->mmio);
return ret;
}
/* find the phy-id from the io address */
priv->id = -ENODEV;
for (id = 0; id < phy_cfg->num_phys; id++) {
if (res->start == phy_cfg->phy_ids[id]) {
priv->id = id;
break;
}
}
priv->dev = dev;
priv->type = PHY_NONE;
priv->cfg = phy_cfg;
ret = rockchip_combphy_parse_dt(dev, priv);
if (ret)
return ret;
ret = reset_control_assert(priv->phy_rst);
if (ret) {
dev_err(dev, "failed to reset phy\n");
return ret;
}
priv->phy = devm_phy_create(dev, NULL, &rockchip_combphy_ops);
if (IS_ERR(priv->phy)) {
dev_err(dev, "failed to create combphy\n");
return PTR_ERR(priv->phy);
}
dev_set_drvdata(dev, priv);
phy_set_drvdata(priv->phy, priv);
phy_provider = devm_of_phy_provider_register(dev, rockchip_combphy_xlate);
return PTR_ERR_OR_ZERO(phy_provider);
}
static int rk3568_combphy_cfg(struct rockchip_combphy_priv *priv)
{
const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg;
unsigned long rate;
u32 val;
switch (priv->type) {
case PHY_TYPE_PCIE:
/* Set SSC downward spread spectrum. */
rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK,
PHYREG32_SSC_DOWNWARD << PHYREG32_SSC_DIR_SHIFT,
PHYREG32);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con0_for_pcie, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con1_for_pcie, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con2_for_pcie, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con3_for_pcie, true);
break;
case PHY_TYPE_USB3:
/* Set SSC downward spread spectrum. */
rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK,
PHYREG32_SSC_DOWNWARD << PHYREG32_SSC_DIR_SHIFT,
PHYREG32);
/* Enable adaptive CTLE for USB3.0 Rx. */
val = readl(priv->mmio + PHYREG15);
val |= PHYREG15_CTLE_EN;
writel(val, priv->mmio + PHYREG15);
/* Set PLL KVCO fine tuning signals. */
rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK,
PHYREG33_PLL_KVCO_VALUE << PHYREG33_PLL_KVCO_SHIFT,
PHYREG33);
/* Enable controlling random jitter. */
writel(PHYREG12_PLL_LPF_ADJ_VALUE, priv->mmio + PHYREG12);
/* Set PLL input clock divider 1/2. */
rockchip_combphy_updatel(priv, PHYREG6_PLL_DIV_MASK,
PHYREG6_PLL_DIV_2 << PHYREG6_PLL_DIV_SHIFT,
PHYREG6);
writel(PHYREG18_PLL_LOOP, priv->mmio + PHYREG18);
writel(PHYREG11_SU_TRIM_0_7, priv->mmio + PHYREG11);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_sel_usb, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txcomp_sel, false);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txelec_sel, false);
rockchip_combphy_param_write(priv->phy_grf, &cfg->usb_mode_set, true);
break;
case PHY_TYPE_SATA:
/* Enable adaptive CTLE for SATA Rx. */
val = readl(priv->mmio + PHYREG15);
val |= PHYREG15_CTLE_EN;
writel(val, priv->mmio + PHYREG15);
/*
* Set tx_rterm=50ohm and rx_rterm=44ohm for SATA.
* 0: 60ohm, 8: 50ohm 15: 44ohm (by step abort 1ohm)
*/
val = PHYREG7_TX_RTERM_50OHM << PHYREG7_TX_RTERM_SHIFT;
val |= PHYREG7_RX_RTERM_44OHM << PHYREG7_RX_RTERM_SHIFT;
writel(val, priv->mmio + PHYREG7);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con0_for_sata, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con1_for_sata, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con2_for_sata, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con3_for_sata, true);
rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_con0_for_sata, true);
break;
case PHY_TYPE_SGMII:
rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_xpcs_phy_ready, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_phymode_sel, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_sel_qsgmii, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->sgmii_mode_set, true);
break;
case PHY_TYPE_QSGMII:
rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_xpcs_phy_ready, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_phymode_sel, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_rate_sel, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_sel_qsgmii, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->qsgmii_mode_set, true);
break;
default:
dev_err(priv->dev, "incompatible PHY type\n");
return -EINVAL;
}
rate = clk_get_rate(priv->refclk);
switch (rate) {
case REF_CLOCK_24MHz:
if (priv->type == PHY_TYPE_USB3 || priv->type == PHY_TYPE_SATA) {
/* Set ssc_cnt[9:0]=0101111101 & 31.5KHz. */
val = PHYREG15_SSC_CNT_VALUE << PHYREG15_SSC_CNT_SHIFT;
rockchip_combphy_updatel(priv, PHYREG15_SSC_CNT_MASK,
val, PHYREG15);
writel(PHYREG16_SSC_CNT_VALUE, priv->mmio + PHYREG16);
}
break;
case REF_CLOCK_25MHz:
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_25m, true);
break;
case REF_CLOCK_100MHz:
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_100m, true);
if (priv->type == PHY_TYPE_PCIE) {
/* PLL KVCO fine tuning. */
val = PHYREG33_PLL_KVCO_VALUE << PHYREG33_PLL_KVCO_SHIFT;
rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK,
val, PHYREG33);
/* Enable controlling random jitter. */
writel(PHYREG12_PLL_LPF_ADJ_VALUE, priv->mmio + PHYREG12);
val = PHYREG6_PLL_DIV_2 << PHYREG6_PLL_DIV_SHIFT;
rockchip_combphy_updatel(priv, PHYREG6_PLL_DIV_MASK,
val, PHYREG6);
writel(PHYREG18_PLL_LOOP, priv->mmio + PHYREG18);
writel(PHYREG11_SU_TRIM_0_7, priv->mmio + PHYREG11);
} else if (priv->type == PHY_TYPE_SATA) {
/* downward spread spectrum +500ppm */
val = PHYREG32_SSC_DOWNWARD << PHYREG32_SSC_DIR_SHIFT;
val |= PHYREG32_SSC_OFFSET_500PPM << PHYREG32_SSC_OFFSET_SHIFT;
rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK, val, PHYREG32);
}
break;
default:
dev_err(priv->dev, "unsupported rate: %lu\n", rate);
return -EINVAL;
}
if (priv->ext_refclk) {
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_ext, true);
if (priv->type == PHY_TYPE_PCIE && rate == REF_CLOCK_100MHz) {
val = PHYREG13_RESISTER_HIGH_Z << PHYREG13_RESISTER_SHIFT;
val |= PHYREG13_CKRCV_AMP0;
rockchip_combphy_updatel(priv, PHYREG13_RESISTER_MASK, val, PHYREG13);
val = readl(priv->mmio + PHYREG14);
val |= PHYREG14_CKRCV_AMP1;
writel(val, priv->mmio + PHYREG14);
}
}
if (priv->enable_ssc) {
val = readl(priv->mmio + PHYREG8);
val |= PHYREG8_SSC_EN;
writel(val, priv->mmio + PHYREG8);
}
return 0;
}
static const struct rockchip_combphy_grfcfg rk3568_combphy_grfcfgs = {
/* pipe-phy-grf */
.pcie_mode_set = { 0x0000, 5, 0, 0x00, 0x11 },
.usb_mode_set = { 0x0000, 5, 0, 0x00, 0x04 },
.sgmii_mode_set = { 0x0000, 5, 0, 0x00, 0x01 },
.qsgmii_mode_set = { 0x0000, 5, 0, 0x00, 0x21 },
.pipe_rxterm_set = { 0x0000, 12, 12, 0x00, 0x01 },
.pipe_txelec_set = { 0x0004, 1, 1, 0x00, 0x01 },
.pipe_txcomp_set = { 0x0004, 4, 4, 0x00, 0x01 },
.pipe_clk_25m = { 0x0004, 14, 13, 0x00, 0x01 },
.pipe_clk_100m = { 0x0004, 14, 13, 0x00, 0x02 },
.pipe_phymode_sel = { 0x0008, 1, 1, 0x00, 0x01 },
.pipe_rate_sel = { 0x0008, 2, 2, 0x00, 0x01 },
.pipe_rxterm_sel = { 0x0008, 8, 8, 0x00, 0x01 },
.pipe_txelec_sel = { 0x0008, 12, 12, 0x00, 0x01 },
.pipe_txcomp_sel = { 0x0008, 15, 15, 0x00, 0x01 },
.pipe_clk_ext = { 0x000c, 9, 8, 0x02, 0x01 },
.pipe_sel_usb = { 0x000c, 14, 13, 0x00, 0x01 },
.pipe_sel_qsgmii = { 0x000c, 15, 13, 0x00, 0x07 },
.pipe_phy_status = { 0x0034, 6, 6, 0x01, 0x00 },
.con0_for_pcie = { 0x0000, 15, 0, 0x00, 0x1000 },
.con1_for_pcie = { 0x0004, 15, 0, 0x00, 0x0000 },
.con2_for_pcie = { 0x0008, 15, 0, 0x00, 0x0101 },
.con3_for_pcie = { 0x000c, 15, 0, 0x00, 0x0200 },
.con0_for_sata = { 0x0000, 15, 0, 0x00, 0x0119 },
.con1_for_sata = { 0x0004, 15, 0, 0x00, 0x0040 },
.con2_for_sata = { 0x0008, 15, 0, 0x00, 0x80c3 },
.con3_for_sata = { 0x000c, 15, 0, 0x00, 0x4407 },
/* pipe-grf */
.pipe_con0_for_sata = { 0x0000, 15, 0, 0x00, 0x2220 },
.pipe_xpcs_phy_ready = { 0x0040, 2, 2, 0x00, 0x01 },
};
static const struct rockchip_combphy_cfg rk3568_combphy_cfgs = {
.num_phys = 3,
.phy_ids = {
0xfe820000,
0xfe830000,
0xfe840000,
},
.grfcfg = &rk3568_combphy_grfcfgs,
.combphy_cfg = rk3568_combphy_cfg,
};
static int rk3588_combphy_cfg(struct rockchip_combphy_priv *priv)
{
const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg;
unsigned long rate;
u32 val;
switch (priv->type) {
case PHY_TYPE_PCIE:
rockchip_combphy_param_write(priv->phy_grf, &cfg->con0_for_pcie, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con1_for_pcie, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con2_for_pcie, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con3_for_pcie, true);
switch (priv->id) {
case 1:
rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_pcie1l0_sel, true);
break;
case 2:
rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_pcie1l1_sel, true);
break;
}
break;
case PHY_TYPE_USB3:
/* Set SSC downward spread spectrum */
rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK,
PHYREG32_SSC_DOWNWARD << PHYREG32_SSC_DIR_SHIFT,
PHYREG32);
/* Enable adaptive CTLE for USB3.0 Rx. */
val = readl(priv->mmio + PHYREG15);
val |= PHYREG15_CTLE_EN;
writel(val, priv->mmio + PHYREG15);
/* Set PLL KVCO fine tuning signals. */
rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK,
PHYREG33_PLL_KVCO_VALUE << PHYREG33_PLL_KVCO_SHIFT,
PHYREG33);
/* Enable controlling random jitter. */
writel(PHYREG12_PLL_LPF_ADJ_VALUE, priv->mmio + PHYREG12);
/* Set PLL input clock divider 1/2. */
rockchip_combphy_updatel(priv, PHYREG6_PLL_DIV_MASK,
PHYREG6_PLL_DIV_2 << PHYREG6_PLL_DIV_SHIFT,
PHYREG6);
writel(PHYREG18_PLL_LOOP, priv->mmio + PHYREG18);
writel(PHYREG11_SU_TRIM_0_7, priv->mmio + PHYREG11);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txcomp_sel, false);
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txelec_sel, false);
rockchip_combphy_param_write(priv->phy_grf, &cfg->usb_mode_set, true);
break;
case PHY_TYPE_SATA:
/* Enable adaptive CTLE for SATA Rx. */
val = readl(priv->mmio + PHYREG15);
val |= PHYREG15_CTLE_EN;
writel(val, priv->mmio + PHYREG15);
/*
* Set tx_rterm=50ohm and rx_rterm=44ohm for SATA.
* 0: 60ohm, 8: 50ohm 15: 44ohm (by step abort 1ohm)
*/
val = PHYREG7_TX_RTERM_50OHM << PHYREG7_TX_RTERM_SHIFT;
val |= PHYREG7_RX_RTERM_44OHM << PHYREG7_RX_RTERM_SHIFT;
writel(val, priv->mmio + PHYREG7);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con0_for_sata, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con1_for_sata, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con2_for_sata, true);
rockchip_combphy_param_write(priv->phy_grf, &cfg->con3_for_sata, true);
rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_con0_for_sata, true);
rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_con1_for_sata, true);
break;
case PHY_TYPE_SGMII:
case PHY_TYPE_QSGMII:
default:
dev_err(priv->dev, "incompatible PHY type\n");
return -EINVAL;
}
rate = clk_get_rate(priv->refclk);
switch (rate) {
case REF_CLOCK_24MHz:
if (priv->type == PHY_TYPE_USB3 || priv->type == PHY_TYPE_SATA) {
/* Set ssc_cnt[9:0]=0101111101 & 31.5KHz. */
val = PHYREG15_SSC_CNT_VALUE << PHYREG15_SSC_CNT_SHIFT;
rockchip_combphy_updatel(priv, PHYREG15_SSC_CNT_MASK,
val, PHYREG15);
writel(PHYREG16_SSC_CNT_VALUE, priv->mmio + PHYREG16);
}
break;
case REF_CLOCK_25MHz:
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_25m, true);
break;
case REF_CLOCK_100MHz:
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_100m, true);
if (priv->type == PHY_TYPE_PCIE) {
/* PLL KVCO fine tuning. */
val = 4 << PHYREG33_PLL_KVCO_SHIFT;
rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK,
val, PHYREG33);
/* Enable controlling random jitter. */
writel(PHYREG12_PLL_LPF_ADJ_VALUE, priv->mmio + PHYREG12);
/* Set up rx_trim: PLL LPF C1 85pf R1 1.25kohm */
writel(PHYREG27_RX_TRIM_RK3588, priv->mmio + PHYREG27);
/* Set up su_trim: */
writel(PHYREG11_SU_TRIM_0_7, priv->mmio + PHYREG11);
} else if (priv->type == PHY_TYPE_SATA) {
/* downward spread spectrum +500ppm */
val = PHYREG32_SSC_DOWNWARD << PHYREG32_SSC_DIR_SHIFT;
val |= PHYREG32_SSC_OFFSET_500PPM << PHYREG32_SSC_OFFSET_SHIFT;
rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK, val, PHYREG32);
}
break;
default:
dev_err(priv->dev, "Unsupported rate: %lu\n", rate);
return -EINVAL;
}
if (priv->ext_refclk) {
rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_ext, true);
if (priv->type == PHY_TYPE_PCIE && rate == REF_CLOCK_100MHz) {
val = PHYREG13_RESISTER_HIGH_Z << PHYREG13_RESISTER_SHIFT;
val |= PHYREG13_CKRCV_AMP0;
rockchip_combphy_updatel(priv, PHYREG13_RESISTER_MASK, val, PHYREG13);
val = readl(priv->mmio + PHYREG14);
val |= PHYREG14_CKRCV_AMP1;
writel(val, priv->mmio + PHYREG14);
}
}
if (priv->enable_ssc) {
val = readl(priv->mmio + PHYREG8);
val |= PHYREG8_SSC_EN;
writel(val, priv->mmio + PHYREG8);
}
return 0;
}
static const struct rockchip_combphy_grfcfg rk3588_combphy_grfcfgs = {
/* pipe-phy-grf */
.pcie_mode_set = { 0x0000, 5, 0, 0x00, 0x11 },
.usb_mode_set = { 0x0000, 5, 0, 0x00, 0x04 },
.pipe_rxterm_set = { 0x0000, 12, 12, 0x00, 0x01 },
.pipe_txelec_set = { 0x0004, 1, 1, 0x00, 0x01 },
.pipe_txcomp_set = { 0x0004, 4, 4, 0x00, 0x01 },
.pipe_clk_25m = { 0x0004, 14, 13, 0x00, 0x01 },
.pipe_clk_100m = { 0x0004, 14, 13, 0x00, 0x02 },
.pipe_rxterm_sel = { 0x0008, 8, 8, 0x00, 0x01 },
.pipe_txelec_sel = { 0x0008, 12, 12, 0x00, 0x01 },
.pipe_txcomp_sel = { 0x0008, 15, 15, 0x00, 0x01 },
.pipe_clk_ext = { 0x000c, 9, 8, 0x02, 0x01 },
.pipe_phy_status = { 0x0034, 6, 6, 0x01, 0x00 },
.con0_for_pcie = { 0x0000, 15, 0, 0x00, 0x1000 },
.con1_for_pcie = { 0x0004, 15, 0, 0x00, 0x0000 },
.con2_for_pcie = { 0x0008, 15, 0, 0x00, 0x0101 },
.con3_for_pcie = { 0x000c, 15, 0, 0x00, 0x0200 },
.con0_for_sata = { 0x0000, 15, 0, 0x00, 0x0129 },
.con1_for_sata = { 0x0004, 15, 0, 0x00, 0x0000 },
.con2_for_sata = { 0x0008, 15, 0, 0x00, 0x80c1 },
.con3_for_sata = { 0x000c, 15, 0, 0x00, 0x0407 },
/* pipe-grf */
.pipe_con0_for_sata = { 0x0000, 11, 5, 0x00, 0x22 },
.pipe_con1_for_sata = { 0x0000, 2, 0, 0x00, 0x2 },
.pipe_pcie1l0_sel = { 0x0100, 0, 0, 0x01, 0x0 },
.pipe_pcie1l1_sel = { 0x0100, 1, 1, 0x01, 0x0 },
};
static const struct rockchip_combphy_cfg rk3588_combphy_cfgs = {
.num_phys = 3,
.phy_ids = {
0xfee00000,
0xfee10000,
0xfee20000,
},
.grfcfg = &rk3588_combphy_grfcfgs,
.combphy_cfg = rk3588_combphy_cfg,
};
static const struct of_device_id rockchip_combphy_of_match[] = {
{
.compatible = "rockchip,rk3568-naneng-combphy",
.data = &rk3568_combphy_cfgs,
},
{
.compatible = "rockchip,rk3588-naneng-combphy",
.data = &rk3588_combphy_cfgs,
},
{ },
};
MODULE_DEVICE_TABLE(of, rockchip_combphy_of_match);
static struct platform_driver rockchip_combphy_driver = {
.probe = rockchip_combphy_probe,
.driver = {
.name = "rockchip-naneng-combphy",
.of_match_table = rockchip_combphy_of_match,
},
};
module_platform_driver(rockchip_combphy_driver);
MODULE_DESCRIPTION("Rockchip NANENG COMBPHY driver");
MODULE_LICENSE("GPL v2");
Codebase Browser
linux