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Subject[PATCH v5 3/4] phy: rockchip: add naneng combo phy for RK3568
Date
This patch implements a combo phy driver for Rockchip SoCs
with NaNeng IP block. This phy can be used as pcie-phy, usb3-phy,
sata-phy or sgmii-phy.

Signed-off-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
---

Changes in v5:
- add rockchip_combphy_updatel()
- restyle

Changes in v4:
- restyle
- add devm_reset_control_array_get()
- remove clk structure
- change refclk DT parse
- change dev_err message
- add dot to phrase
- add ext_refclk variable
- add enable_ssc variable
- rename rockchip_combphy_param_write
- remove param_read
- replace rockchip-naneng-combphy driver name

Changes in v3:
- Using api devm_reset_control_get_optional_exclusive and dev_err_probe.
- Remove apb_rst.
- Redefine registers address.

Changes in v2:
- Using api devm_platform_get_and_ioremap_resource.
- Modify rockchip_combphy_set_Mode.
- Add some PHY registers definition.

drivers/phy/rockchip/Kconfig | 8 +
drivers/phy/rockchip/Makefile | 1 +
.../rockchip/phy-rockchip-naneng-combphy.c | 618 ++++++++++++++++++
3 files changed, 627 insertions(+)
create mode 100644 drivers/phy/rockchip/phy-rockchip-naneng-combphy.c

diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig
index e812adad7242..9022e395c056 100644
--- a/drivers/phy/rockchip/Kconfig
+++ b/drivers/phy/rockchip/Kconfig
@@ -66,6 +66,14 @@ config PHY_ROCKCHIP_INNO_DSIDPHY
Enable this to support the Rockchip MIPI/LVDS/TTL PHY with
Innosilicon IP block.

+config PHY_ROCKCHIP_NANENG_COMBO_PHY
+ tristate "Rockchip NANENG COMBO PHY Driver"
+ depends on ARCH_ROCKCHIP && OF
+ select GENERIC_PHY
+ help
+ Enable this to support the Rockchip PCIe/USB3.0/SATA/QSGMII
+ combo PHY with NaNeng IP block.
+
config PHY_ROCKCHIP_PCIE
tristate "Rockchip PCIe PHY Driver"
depends on (ARCH_ROCKCHIP && OF) || COMPILE_TEST
diff --git a/drivers/phy/rockchip/Makefile b/drivers/phy/rockchip/Makefile
index f0eec212b2aa..a5041efb5b8f 100644
--- a/drivers/phy/rockchip/Makefile
+++ b/drivers/phy/rockchip/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_PHY_ROCKCHIP_INNO_CSIDPHY) += phy-rockchip-inno-csidphy.o
obj-$(CONFIG_PHY_ROCKCHIP_INNO_DSIDPHY) += phy-rockchip-inno-dsidphy.o
obj-$(CONFIG_PHY_ROCKCHIP_INNO_HDMI) += phy-rockchip-inno-hdmi.o
obj-$(CONFIG_PHY_ROCKCHIP_INNO_USB2) += phy-rockchip-inno-usb2.o
+obj-$(CONFIG_PHY_ROCKCHIP_NANENG_COMBO_PHY) += phy-rockchip-naneng-combphy.o
obj-$(CONFIG_PHY_ROCKCHIP_PCIE) += phy-rockchip-pcie.o
obj-$(CONFIG_PHY_ROCKCHIP_TYPEC) += phy-rockchip-typec.o
obj-$(CONFIG_PHY_ROCKCHIP_USB) += phy-rockchip-usb.o
diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
new file mode 100644
index 000000000000..4fa150dbe7eb
--- /dev/null
+++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
@@ -0,0 +1,618 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Rockchip PIPE USB3.0 PCIE SATA combphy driver
+ *
+ * Copyright (C) 2021 Rockchip Electronics Co., Ltd.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+#include <dt-bindings/phy/phy.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)
+
+/* RK3568 T22 COMBO PHY REG */
+#define RK3568_T22_PHYREG5 0x14
+#define T22_PHYREG5_PLL_DIV_MASK GENMASK(7, 6)
+#define T22_PHYREG5_PLL_DIV_SHIFT 6
+#define T22_PHYREG5_PLL_DIV_2 1
+
+#define RK3568_T22_PHYREG6 0x18
+#define T22_PHYREG6_TX_RTERM_MASK GENMASK(7, 4)
+#define T22_PHYREG6_TX_RTERM_SHIFT 4
+#define T22_PHYREG6_TX_RTERM_50OHM 8
+#define T22_PHYREG6_RX_RTERM_MASK GENMASK(3, 0)
+#define T22_PHYREG6_RX_RTERM_SHIFT 0
+#define T22_PHYREG6_RX_RTERM_44OHM 15
+
+#define RK3568_T22_PHYREG7 0x1C
+#define T22_PHYREG7_SSC_EN BIT(4)
+
+#define RK3568_T22_PHYREG10 0x28
+#define T22_PHYREG10_SU_TRIM_0_7 0xF0
+
+#define RK3568_T22_PHYREG11 0x2C
+#define T22_PHYREG11_PLL_LPF_ADJ_VALUE 4
+
+#define RK3568_T22_PHYREG12 0x30
+#define T22_PHYREG12_RESISTER_MASK GENMASK(5, 4)
+#define T22_PHYREG12_RESISTER_SHIFT 0x4
+#define T22_PHYREG12_RESISTER_HIGH_Z 3
+#define T22_PHYREG12_CKRCV_AMP0 BIT(7)
+
+#define RK3568_T22_PHYREG13 0x34
+#define T22_PHYREG13_CKRCV_AMP1 BIT(0)
+
+#define RK3568_T22_PHYREG14 0x38
+#define T22_PHYREG14_CTLE_EN BIT(0)
+#define T22_PHYREG14_SSC_CNT_MASK GENMASK(7, 6)
+#define T22_PHYREG14_SSC_CNT_SHIFT 6
+#define T22_PHYREG14_SSC_CNT_VALUE 1
+
+#define RK3568_T22_PHYREG15 0x3C
+#define T22_PHYREG15_SSC_CNT_VALUE 0x5f
+
+#define RK3568_T22_PHYREG17 0x44
+#define T22_PHYREG17_PLL_LOOP 0x32
+
+#define RK3568_T22_PHYREG31 0x7C
+#define T22_PHYREG31_SSC_MASK GENMASK(7, 4)
+#define T22_PHYREG31_SSC_DIR_SHIFT 4
+#define T22_PHYREG31_SSC_UPWARD 0
+#define T22_PHYREG31_SSC_DOWNWARD 1
+#define T22_PHYREG31_SSC_OFFSET_SHIFT 6
+#define T22_PHYREG31_SSC_OFFSET_500PPM 1
+
+#define RK3568_T22_PHYREG32 0x80
+#define T22_PHYREG32_PLL_KVCO_MASK GENMASK(4, 2)
+#define T22_PHYREG32_PLL_KVCO_SHIFT 2
+#define T22_PHYREG32_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_sgmii_mac_sel;
+ struct combphy_reg pipe_xpcs_phy_ready;
+ struct combphy_reg u3otg0_port_en;
+ struct combphy_reg u3otg1_port_en;
+};
+
+struct rockchip_combphy_cfg {
+ const struct rockchip_combphy_grfcfg *grfcfg;
+ int (*combphy_cfg)(struct rockchip_combphy_priv *priv);
+};
+
+struct rockchip_combphy_priv {
+ u8 mode;
+ 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_set_mode(struct rockchip_combphy_priv *priv)
+{
+ int ret = 0;
+
+ switch (priv->mode) {
+ 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");
+ return -EINVAL;
+ }
+
+ if (ret)
+ dev_err(priv->dev, "failed to init phy for phy mode %x\n", priv->mode);
+
+ return ret;
+}
+
+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;
+ }
+
+ ret = rockchip_combphy_set_mode(priv);
+ if (ret)
+ goto err_clk;
+
+ ret = reset_control_deassert(priv->phy_rst);
+ if (ret)
+ goto err_clk;
+
+ if (priv->mode == 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 rochchip_combphy_ops = {
+ .init = rockchip_combphy_init,
+ .exit = rockchip_combphy_exit,
+ .owner = THIS_MODULE,
+};
+
+static struct phy *rockchip_combphy_xlate(struct device *dev, 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->mode != PHY_NONE && priv->mode != args->args[0])
+ dev_warn(dev, "phy type select %d overwriting type %d\n",
+ args->args[0], priv->mode);
+
+ priv->mode = args->args[0];
+
+ return priv->phy;
+}
+
+static int rockchip_combphy_parse_dt(struct device *dev, struct rockchip_combphy_priv *priv)
+{
+ const struct rockchip_combphy_cfg *phy_cfg = priv->cfg;
+ int mac_id;
+ 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);
+ }
+
+ if (device_property_present(dev, "rockchip,dis-u3otg0-port"))
+ rockchip_combphy_param_write(priv->pipe_grf, &phy_cfg->grfcfg->u3otg0_port_en,
+ false);
+
+ if (device_property_present(dev, "rockchip,dis-u3otg1-port"))
+ rockchip_combphy_param_write(priv->pipe_grf, &phy_cfg->grfcfg->u3otg1_port_en,
+ false);
+
+ priv->enable_ssc = device_property_present(dev, "rockchip,enable-ssc");
+
+ priv->ext_refclk = device_property_present(dev, "rockchip,ext-refclk");
+
+ if (!device_property_read_u32(dev, "rockchip,sgmii-mac-sel", &mac_id) &&
+ (mac_id > 0))
+ rockchip_combphy_param_write(priv->pipe_grf, &phy_cfg->grfcfg->pipe_sgmii_mac_sel,
+ true);
+ else
+ rockchip_combphy_param_write(priv->pipe_grf, &phy_cfg->grfcfg->pipe_sgmii_mac_sel,
+ false);
+
+ priv->phy_rst = devm_reset_control_array_get(dev, false, false);
+ 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;
+
+ 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;
+ }
+
+ priv->dev = dev;
+ priv->mode = 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, &rochchip_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->mode) {
+ case PHY_TYPE_PCIE:
+ /* Set SSC downward spread spectrum. */
+ rockchip_combphy_updatel(priv, T22_PHYREG31_SSC_MASK,
+ T22_PHYREG31_SSC_DOWNWARD << T22_PHYREG31_SSC_DIR_SHIFT,
+ RK3568_T22_PHYREG31);
+
+ 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, T22_PHYREG31_SSC_MASK,
+ T22_PHYREG31_SSC_DOWNWARD << T22_PHYREG31_SSC_DIR_SHIFT,
+ RK3568_T22_PHYREG31);
+
+ /* Enable adaptive CTLE for USB3.0 Rx. */
+ val = readl(priv->mmio + RK3568_T22_PHYREG14);
+ val |= T22_PHYREG14_CTLE_EN;
+ writel(val, priv->mmio + RK3568_T22_PHYREG14);
+
+ /* Set PLL KVCO fine tuning signals. */
+ rockchip_combphy_updatel(priv, T22_PHYREG32_PLL_KVCO_MASK,
+ T22_PHYREG32_PLL_KVCO_VALUE << T22_PHYREG32_PLL_KVCO_SHIFT,
+ RK3568_T22_PHYREG32);
+
+ /* Enable controlling random jitter. */
+ writel(T22_PHYREG11_PLL_LPF_ADJ_VALUE, priv->mmio + RK3568_T22_PHYREG11);
+
+ /* Set PLL input clock divider 1/2. */
+ rockchip_combphy_updatel(priv, T22_PHYREG5_PLL_DIV_MASK,
+ T22_PHYREG5_PLL_DIV_2 << T22_PHYREG5_PLL_DIV_SHIFT,
+ RK3568_T22_PHYREG5);
+
+ writel(T22_PHYREG17_PLL_LOOP, priv->mmio + RK3568_T22_PHYREG17);
+ writel(T22_PHYREG10_SU_TRIM_0_7, priv->mmio + RK3568_T22_PHYREG10);
+
+ 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 + RK3568_T22_PHYREG14);
+ val |= T22_PHYREG14_CTLE_EN;
+ writel(val, priv->mmio + RK3568_T22_PHYREG14);
+ /*
+ * Set tx_rterm=50ohm and rx_rterm=44ohm for SATA.
+ * 0: 60ohm, 8: 50ohm 15: 44ohm (by step abort 1ohm)
+ */
+ val = T22_PHYREG6_TX_RTERM_50OHM << T22_PHYREG6_TX_RTERM_SHIFT;
+ val |= T22_PHYREG6_RX_RTERM_44OHM << T22_PHYREG6_RX_RTERM_SHIFT;
+ writel(val, priv->mmio + RK3568_T22_PHYREG6);
+
+ 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->mode == PHY_TYPE_USB3 || priv->mode == PHY_TYPE_SATA) {
+ /* Set ssc_cnt[9:0]=0101111101 & 31.5KHz. */
+ val = T22_PHYREG14_SSC_CNT_VALUE << T22_PHYREG14_SSC_CNT_SHIFT;
+ rockchip_combphy_updatel(priv, T22_PHYREG14_SSC_CNT_MASK,
+ val, RK3568_T22_PHYREG14);
+
+ writel(T22_PHYREG15_SSC_CNT_VALUE, priv->mmio + RK3568_T22_PHYREG15);
+ }
+ 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->mode == PHY_TYPE_PCIE) {
+ /* PLL KVCO fine tuning. */
+ val = T22_PHYREG32_PLL_KVCO_VALUE << T22_PHYREG32_PLL_KVCO_SHIFT;
+ rockchip_combphy_updatel(priv, T22_PHYREG32_PLL_KVCO_MASK,
+ val, RK3568_T22_PHYREG32);
+
+ /* Enable controlling random jitter. */
+ writel(T22_PHYREG11_PLL_LPF_ADJ_VALUE, priv->mmio + RK3568_T22_PHYREG11);
+
+ val = T22_PHYREG5_PLL_DIV_2 << T22_PHYREG5_PLL_DIV_SHIFT;
+ rockchip_combphy_updatel(priv, T22_PHYREG5_PLL_DIV_MASK,
+ val, RK3568_T22_PHYREG5);
+
+ writel(T22_PHYREG17_PLL_LOOP, priv->mmio + RK3568_T22_PHYREG17);
+ writel(T22_PHYREG10_SU_TRIM_0_7, priv->mmio + RK3568_T22_PHYREG10);
+ } else if (priv->mode == PHY_TYPE_SATA) {
+ /* downward spread spectrum +500ppm */
+ val = T22_PHYREG31_SSC_DOWNWARD << T22_PHYREG31_SSC_DIR_SHIFT;
+ val |= T22_PHYREG31_SSC_OFFSET_500PPM << T22_PHYREG31_SSC_OFFSET_SHIFT;
+ rockchip_combphy_updatel(priv, T22_PHYREG31_SSC_MASK, val, RK3568_T22_PHYREG31);
+ writel(val, priv->mmio + RK3568_T22_PHYREG31);
+ }
+ 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->mode == PHY_TYPE_PCIE && rate == REF_CLOCK_100MHz) {
+ val = T22_PHYREG12_RESISTER_HIGH_Z << T22_PHYREG12_RESISTER_SHIFT;
+ val |= T22_PHYREG12_CKRCV_AMP0;
+ rockchip_combphy_updatel(priv, T22_PHYREG12_RESISTER_MASK, val, RK3568_T22_PHYREG12);
+
+ val = readl(priv->mmio + RK3568_T22_PHYREG13);
+ val |= T22_PHYREG13_CKRCV_AMP1;
+ writel(val, priv->mmio + RK3568_T22_PHYREG13);
+ }
+ }
+
+ if (priv->enable_ssc) {
+ val = readl(priv->mmio + RK3568_T22_PHYREG7);
+ val |= T22_PHYREG7_SSC_EN;
+ writel(val, priv->mmio + RK3568_T22_PHYREG7);
+ }
+
+ 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_sgmii_mac_sel = { 0x0040, 1, 1, 0x00, 0x01 },
+ .pipe_xpcs_phy_ready = { 0x0040, 2, 2, 0x00, 0x01 },
+ .u3otg0_port_en = { 0x0104, 15, 0, 0x0181, 0x1100 },
+ .u3otg1_port_en = { 0x0144, 15, 0, 0x0181, 0x1100 },
+};
+
+static const struct rockchip_combphy_cfg rk3568_combphy_cfgs = {
+ .grfcfg = &rk3568_combphy_grfcfgs,
+ .combphy_cfg = rk3568_combphy_cfg,
+};
+
+static const struct of_device_id rockchip_combphy_of_match[] = {
+ {
+ .compatible = "rockchip,rk3568-naneng-combphy",
+ .data = &rk3568_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");
--
2.17.1


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