[PATCH v5 00/11] Add the integrated PHY support

[PATCH v5 00/11] Add the integrated PHY support

[David Wu]

The rk3228 and rk3328 support integrated PHY inside, let's enable
it to work. And the integrated PHY need to do some special setting,
so register the rockchip integrated PHY driver.

David Wu (11):
  net: phy: Add rockchip PHY driver support
  multi_v7_defconfig: Make rockchip PHY built-in
  arm64: defconfig: Enable CONFIG_ROCKCHIP_PHY
  net: stmmac: dwmac-rk: Remove unwanted code for rk3328_set_to_rmii()
  Documentation: net: phy: Add phy-is-integrated binding
  net: stmmac: dwmac-rk: Add integrated PHY support
  net: stmmac: dwmac-rk: Add integrated PHY support for rk3228
  net: stmmac: dwmac-rk: Add integrated PHY supprot for rk3328
  ARM: dts: rk3228-evb: Enable the integrated PHY for gmac
  ARM64: dts: rockchip: Add gmac2phy node support for rk3328
  ARM64: dts: rockchip: Enable gmac2phy for rk3328-evb

 Documentation/devicetree/bindings/net/phy.txt  |   5 +
 arch/arm/boot/dts/rk3228-evb.dts               |  34 ++++
 arch/arm/configs/multi_v7_defconfig            |   1 +
 arch/arm64/boot/dts/rockchip/rk3328-evb.dts    |  17 ++
 arch/arm64/boot/dts/rockchip/rk3328.dtsi       |  39 +++++
 arch/arm64/configs/defconfig                   |   1 +
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 140 +++++++++++++--
 drivers/net/phy/Kconfig                        |   5 +
 drivers/net/phy/Makefile                       |   1 +
 drivers/net/phy/rockchip.c                     | 233 +++++++++++++++++++++++++
 10 files changed, 466 insertions(+), 10 deletions(-)
 create mode 100644 drivers/net/phy/rockchip.c

-- 
1.9.1


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[PATCH v5 01/11] net: phy: Add rockchip PHY driver support

[David Wu]

Support integrated ethernet PHY currently.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
changes in v4:
 - Remove SUPPORTED_[Asym_]Pause.
 - Some minor fix like defines.

changes in v5:
 - Rename internal to integrated.
 - Remove PHY_IS_INTERNAL flag.

 drivers/net/phy/Kconfig    |   5 +
 drivers/net/phy/Makefile   |   1 +
 drivers/net/phy/rockchip.c | 233 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 239 insertions(+)
 create mode 100644 drivers/net/phy/rockchip.c

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 2dda720..255ac3a 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -334,6 +334,11 @@ config REALTEK_PHY
 	---help---
 	  Supports the Realtek 821x PHY.
 
+config ROCKCHIP_PHY
+        tristate "Driver for Rockchip Ethernet PHYs"
+        ---help---
+          Currently supports the integrated Ethernet PHY.
+
 config SMSC_PHY
 	tristate "SMSC PHYs"
 	---help---
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 8e9b9f3..350520e 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -66,6 +66,7 @@ obj-$(CONFIG_MICROSEMI_PHY)	+= mscc.o
 obj-$(CONFIG_NATIONAL_PHY)	+= national.o
 obj-$(CONFIG_QSEMI_PHY)		+= qsemi.o
 obj-$(CONFIG_REALTEK_PHY)	+= realtek.o
+obj-$(CONFIG_ROCKCHIP_PHY)	+= rockchip.o
 obj-$(CONFIG_SMSC_PHY)		+= smsc.o
 obj-$(CONFIG_STE10XP)		+= ste10Xp.o
 obj-$(CONFIG_TERANETICS_PHY)	+= teranetics.o
diff --git a/drivers/net/phy/rockchip.c b/drivers/net/phy/rockchip.c
new file mode 100644
index 0000000..c092af1
--- /dev/null
+++ b/drivers/net/phy/rockchip.c
@@ -0,0 +1,233 @@
+/**
+ * drivers/net/phy/rockchip.c
+ *
+ * Driver for ROCKCHIP Ethernet PHYs
+ *
+ * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * David Wu <david.wu@rock-chips.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/ethtool.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+
+#define INTERNAL_EPHY_ID			0x1234d400
+
+#define MII_INTERNAL_CTRL_STATUS		17
+#define SMI_ADDR_TSTCNTL			20
+#define SMI_ADDR_TSTREAD1			21
+#define SMI_ADDR_TSTREAD2			22
+#define SMI_ADDR_TSTWRITE			23
+#define MII_SPECIAL_CONTROL_STATUS		31
+
+#define MII_AUTO_MDIX_EN			BIT(7)
+#define MII_MDIX_EN				BIT(6)
+
+#define MII_SPEED_10				BIT(2)
+#define MII_SPEED_100				BIT(3)
+
+#define TSTCNTL_RD				(BIT(15) | BIT(10))
+#define TSTCNTL_WR				(BIT(14) | BIT(10))
+
+#define TSTMODE_ENABLE				0x400
+#define TSTMODE_DISABLE				0x0
+
+#define WR_ADDR_A7CFG				0x18
+
+static int rockchip_init_tstmode(struct phy_device *phydev)
+{
+	int ret;
+
+	/* Enable access to Analog and DSP register banks */
+	ret = phy_write(phydev, SMI_ADDR_TSTCNTL, TSTMODE_ENABLE);
+	if (ret)
+		return ret;
+
+	ret = phy_write(phydev, SMI_ADDR_TSTCNTL, TSTMODE_DISABLE);
+	if (ret)
+		return ret;
+
+	return phy_write(phydev, SMI_ADDR_TSTCNTL, TSTMODE_ENABLE);
+}
+
+static int rockchip_close_tstmode(struct phy_device *phydev)
+{
+	/* Back to basic register bank */
+	return phy_write(phydev, SMI_ADDR_TSTCNTL, TSTMODE_DISABLE);
+}
+
+static int rockchip_integrated_phy_analog_init(struct phy_device *phydev)
+{
+	int ret;
+
+	ret = rockchip_init_tstmode(phydev);
+	if (ret)
+		return ret;
+
+	/*
+	 * Adjust tx amplitude to make sginal better,
+	 * the default value is 0x8.
+	 */
+	ret = phy_write(phydev, SMI_ADDR_TSTWRITE, 0xB);
+	if (ret)
+		return ret;
+	ret = phy_write(phydev, SMI_ADDR_TSTCNTL, TSTCNTL_WR | WR_ADDR_A7CFG);
+	if (ret)
+		return ret;
+
+	return rockchip_close_tstmode(phydev);
+}
+
+static int rockchip_integrated_phy_config_init(struct phy_device *phydev)
+{
+	int val, ret;
+
+	/*
+	 * The auto MIDX has linked problem on some board,
+	 * workround to disable auto MDIX.
+	 */
+	val = phy_read(phydev, MII_INTERNAL_CTRL_STATUS);
+	if (val < 0)
+		return val;
+	val &= ~MII_AUTO_MDIX_EN;
+	ret = phy_write(phydev, MII_INTERNAL_CTRL_STATUS, val);
+	if (ret)
+		return ret;
+
+	return rockchip_integrated_phy_analog_init(phydev);
+}
+
+static void rockchip_link_change_notify(struct phy_device *phydev)
+{
+	int speed = SPEED_10;
+
+	if (phydev->autoneg == AUTONEG_ENABLE) {
+		int reg = phy_read(phydev, MII_SPECIAL_CONTROL_STATUS);
+
+		if (reg < 0) {
+			phydev_err(phydev, "phy_read err: %d.\n", reg);
+			return;
+		}
+
+		if (reg & MII_SPEED_100)
+			speed = SPEED_100;
+		else if (reg & MII_SPEED_10)
+			speed = SPEED_10;
+	} else {
+		int bmcr = phy_read(phydev, MII_BMCR);
+
+		if (bmcr < 0) {
+			phydev_err(phydev, "phy_read err: %d.\n", bmcr);
+			return;
+		}
+
+		if (bmcr & BMCR_SPEED100)
+			speed = SPEED_100;
+		else
+			speed = SPEED_10;
+	}
+
+	/*
+	 * If mode switch happens from 10BT to 100BT, all DSP/AFE
+	 * registers are set to default values. So any AFE/DSP
+	 * registers have to be re-initialized in this case.
+	 */
+	if ((phydev->speed == SPEED_10) && (speed == SPEED_100)) {
+		int ret = rockchip_integrated_phy_analog_init(phydev);
+		if (ret)
+			phydev_err(phydev, "rockchip_integrated_phy_analog_init err: %d.\n",
+				   ret);
+	}
+}
+
+static int rockchip_set_polarity(struct phy_device *phydev, int polarity)
+{
+	int reg, err, val;
+
+	/* get the current settings */
+	reg = phy_read(phydev, MII_INTERNAL_CTRL_STATUS);
+	if (reg < 0)
+		return reg;
+
+	reg &= ~MII_AUTO_MDIX_EN;
+	val = reg;
+	switch (polarity) {
+	case ETH_TP_MDI:
+		val &= ~MII_MDIX_EN;
+		break;
+	case ETH_TP_MDI_X:
+		val |= MII_MDIX_EN;
+		break;
+	case ETH_TP_MDI_AUTO:
+	case ETH_TP_MDI_INVALID:
+	default:
+		return 0;
+	}
+
+	if (val != reg) {
+		/* Set the new polarity value in the register */
+		err = phy_write(phydev, MII_INTERNAL_CTRL_STATUS, val);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int rockchip_config_aneg(struct phy_device *phydev)
+{
+	int err;
+
+	err = rockchip_set_polarity(phydev, phydev->mdix);
+	if (err < 0)
+		return err;
+
+	return genphy_config_aneg(phydev);
+}
+
+static int rockchip_phy_resume(struct phy_device *phydev)
+{
+	genphy_resume(phydev);
+
+	return rockchip_integrated_phy_config_init(phydev);
+}
+
+static struct phy_driver rockchip_phy_driver[] = {
+{
+	.phy_id			= INTERNAL_EPHY_ID,
+	.phy_id_mask		= 0xfffffff0,
+	.name			= "Rockchip integrated EPHY",
+	.features		= PHY_BASIC_FEATURES,
+	.flags			= 0,
+	.link_change_notify	= rockchip_link_change_notify,
+	.soft_reset		= genphy_soft_reset,
+	.config_init		= rockchip_integrated_phy_config_init,
+	.config_aneg		= rockchip_config_aneg,
+	.read_status		= genphy_read_status,
+	.suspend		= genphy_suspend,
+	.resume			= rockchip_phy_resume,
+},
+};
+
+module_phy_driver(rockchip_phy_driver);
+
+static struct mdio_device_id __maybe_unused rockchip_phy_tbl[] = {
+	{ INTERNAL_EPHY_ID, 0xfffffff0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(mdio, rockchip_phy_tbl);
+
+MODULE_AUTHOR("David Wu <david.wu@rock-chips.com>");
+MODULE_DESCRIPTION("Rockchip Ethernet PHY driver");
+MODULE_LICENSE("GPL v2");
-- 
1.9.1

[PATCH v5 02/11] multi_v7_defconfig: Make rockchip PHY built-in

[David Wu]

Enable the rockchip PHY driver for multi_v7_defconfig builds.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
 arch/arm/configs/multi_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 4d19c1b..94d7e71 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -270,6 +270,7 @@ CONFIG_ICPLUS_PHY=y
 CONFIG_REALTEK_PHY=y
 CONFIG_MICREL_PHY=y
 CONFIG_FIXED_PHY=y
+CONFIG_ROCKCHIP_PHY=y
 CONFIG_USB_PEGASUS=y
 CONFIG_USB_RTL8152=m
 CONFIG_USB_USBNET=y
-- 
1.9.1

[PATCH v5 03/11] arm64: defconfig: Enable CONFIG_ROCKCHIP_PHY

[David Wu]

Make the rockchip PHY driver built into the kernel.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 6c7d147..925bd478 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -203,6 +203,7 @@ CONFIG_MARVELL_PHY=m
 CONFIG_MESON_GXL_PHY=m
 CONFIG_MICREL_PHY=y
 CONFIG_REALTEK_PHY=m
+CONFIG_ROCKCHIP_PHY=y
 CONFIG_USB_PEGASUS=m
 CONFIG_USB_RTL8150=m
 CONFIG_USB_RTL8152=m
-- 
1.9.1

[PATCH v5 04/11] net: stmmac: dwmac-rk: Remove unwanted code for rk3328_set_to_rmii()

[David Wu]

This is wrong setting for rk3328_set_to_rmii(), so remove it.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index f0df519..a8e8fd5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -365,9 +365,6 @@ static void rk3328_set_to_rmii(struct rk_priv_data *bsp_priv)
 	regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
 		     RK3328_GMAC_PHY_INTF_SEL_RMII |
 		     RK3328_GMAC_RMII_MODE);
-
-	/* set MAC to RMII mode */
-	regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1, GRF_BIT(11));
 }
 
 static void rk3328_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
-- 
1.9.1

[PATCH v5 05/11] Documentation: net: phy: Add phy-is-integrated binding

[David Wu]

Add the documentation for integrated PHY. A boolean property indicates
the PHY is integrated into the same physical package as the Ethernet
MAC. If needed, muxers should be configured to ensure the integrated
PHY is used. The absence of this property indicates the muxers should
be configured so that the external PHY is used.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
change in v5:
 - Use phy-is-integrated boolean property.

 Documentation/devicetree/bindings/net/phy.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/phy.txt b/Documentation/devicetree/bindings/net/phy.txt
index b558576..d3c24d5 100644
--- a/Documentation/devicetree/bindings/net/phy.txt
+++ b/Documentation/devicetree/bindings/net/phy.txt
@@ -52,6 +52,11 @@ Optional Properties:
   Mark the corresponding energy efficient ethernet mode as broken and
   request the ethernet to stop advertising it.
 
+- phy-is-integrated: If set, indicates that the PHY is integrated into the same
+  physical package as the Ethernet MAC. If needed, muxers should be configured
+  to ensure the integrated PHY is used. The absence of this property indicates
+  the muxers should be configured so that the external PHY is used.
+
 Example:
 
 ethernet-phy@0 {
-- 
1.9.1

[PATCH v5 06/11] net: stmmac: dwmac-rk: Add integrated PHY support

[David Wu]

To make integrated PHY work, need to configure the PHY clock,
PHY cru reset and related registers.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
change in v4:
 - PHY is internal or not base on the phy-is-internal property via phy node.

changes in v5:
 - Use phy-is-integrated property via PHY node.
 - Get the PHY clock and reset control from PHY node of device tree.
 - Rename internal to integrated.

 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 99 ++++++++++++++++++++++++--
 1 file changed, 95 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index a8e8fd5..9019917 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -41,6 +41,7 @@ struct rk_gmac_ops {
 	void (*set_to_rmii)(struct rk_priv_data *bsp_priv);
 	void (*set_rgmii_speed)(struct rk_priv_data *bsp_priv, int speed);
 	void (*set_rmii_speed)(struct rk_priv_data *bsp_priv, int speed);
+	void (*integrated_phy_powerup)(struct rk_priv_data *bsp_priv);
 };
 
 struct rk_priv_data {
@@ -52,6 +53,7 @@ struct rk_priv_data {
 
 	bool clk_enabled;
 	bool clock_input;
+	bool integrated_phy;
 
 	struct clk *clk_mac;
 	struct clk *gmac_clkin;
@@ -61,6 +63,9 @@ struct rk_priv_data {
 	struct clk *clk_mac_refout;
 	struct clk *aclk_mac;
 	struct clk *pclk_mac;
+	struct clk *clk_phy;
+
+	struct reset_control *phy_reset;
 
 	int tx_delay;
 	int rx_delay;
@@ -750,9 +755,55 @@ static void rk3399_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 	.set_rmii_speed = rk3399_set_rmii_speed,
 };
 
-static int gmac_clk_init(struct rk_priv_data *bsp_priv)
+#define RK_GRF_MACPHY_CON0		0xb00
+#define RK_GRF_MACPHY_CON1		0xb04
+#define RK_GRF_MACPHY_CON2		0xb08
+#define RK_GRF_MACPHY_CON3		0xb0c
+
+#define RK_MACPHY_ENABLE		GRF_BIT(0)
+#define RK_MACPHY_DISABLE		GRF_CLR_BIT(0)
+#define RK_MACPHY_CFG_CLK_50M		GRF_BIT(14)
+#define RK_GMAC2PHY_RMII_MODE		(GRF_BIT(6) | GRF_CLR_BIT(7))
+#define RK_GRF_CON2_MACPHY_ID		HIWORD_UPDATE(0x1234, 0xffff, 0)
+#define RK_GRF_CON3_MACPHY_ID		HIWORD_UPDATE(0x35, 0x3f, 0)
+
+static void rk_gmac_integrated_phy_powerup(struct rk_priv_data *priv)
+{
+	if (priv->ops->integrated_phy_powerup)
+		priv->ops->integrated_phy_powerup(priv);
+
+	regmap_write(priv->grf, RK_GRF_MACPHY_CON0, RK_MACPHY_CFG_CLK_50M);
+	regmap_write(priv->grf, RK_GRF_MACPHY_CON0, RK_GMAC2PHY_RMII_MODE);
+
+	regmap_write(priv->grf, RK_GRF_MACPHY_CON2, RK_GRF_CON2_MACPHY_ID);
+	regmap_write(priv->grf, RK_GRF_MACPHY_CON3, RK_GRF_CON3_MACPHY_ID);
+
+	if (priv->phy_reset) {
+		/* PHY needs to be disabled before trying to reset it */
+		regmap_write(priv->grf, RK_GRF_MACPHY_CON0, RK_MACPHY_DISABLE);
+		if (priv->phy_reset)
+			reset_control_assert(priv->phy_reset);
+		usleep_range(10, 20);
+		if (priv->phy_reset)
+			reset_control_deassert(priv->phy_reset);
+		usleep_range(10, 20);
+		regmap_write(priv->grf, RK_GRF_MACPHY_CON0, RK_MACPHY_ENABLE);
+		msleep(30);
+	}
+}
+
+static void rk_gmac_integrated_phy_powerdown(struct rk_priv_data *priv)
 {
+	regmap_write(priv->grf, RK_GRF_MACPHY_CON0, RK_MACPHY_DISABLE);
+	if (priv->phy_reset)
+		reset_control_assert(priv->phy_reset);
+}
+
+static int rk_gmac_clk_init(struct plat_stmmacenet_data *plat)
+{
+	struct rk_priv_data *bsp_priv = plat->bsp_priv;
 	struct device *dev = &bsp_priv->pdev->dev;
+	int ret;
 
 	bsp_priv->clk_enabled = false;
 
@@ -803,6 +854,16 @@ static int gmac_clk_init(struct rk_priv_data *bsp_priv)
 			clk_set_rate(bsp_priv->clk_mac, 50000000);
 	}
 
+	if (plat->phy_node && bsp_priv->integrated_phy) {
+		bsp_priv->clk_phy = of_clk_get(plat->phy_node, 0);
+		if (IS_ERR(bsp_priv->clk_phy)) {
+			ret = PTR_ERR(bsp_priv->clk_phy);
+			dev_err(dev, "Cannot get PHY clock: %d\n", ret);
+			return -EINVAL;
+		}
+		clk_set_rate(bsp_priv->clk_phy, 50000000);
+	}
+
 	return 0;
 }
 
@@ -826,6 +887,9 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable)
 						bsp_priv->clk_mac_refout);
 			}
 
+			if (!IS_ERR(bsp_priv->clk_phy))
+				clk_prepare_enable(bsp_priv->clk_phy);
+
 			if (!IS_ERR(bsp_priv->aclk_mac))
 				clk_prepare_enable(bsp_priv->aclk_mac);
 
@@ -858,6 +922,9 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable)
 						bsp_priv->clk_mac_refout);
 			}
 
+			if (!IS_ERR(bsp_priv->clk_phy))
+				clk_disable_unprepare(bsp_priv->clk_phy);
+
 			if (!IS_ERR(bsp_priv->aclk_mac))
 				clk_disable_unprepare(bsp_priv->aclk_mac);
 
@@ -902,6 +969,7 @@ static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
 }
 
 static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
+					  struct plat_stmmacenet_data *plat,
 					  const struct rk_gmac_ops *ops)
 {
 	struct rk_priv_data *bsp_priv;
@@ -964,9 +1032,22 @@ static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
 
 	bsp_priv->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
 							"rockchip,grf");
-	bsp_priv->pdev = pdev;
 
-	gmac_clk_init(bsp_priv);
+	if (plat->phy_node) {
+		bsp_priv->integrated_phy = of_property_read_bool(plat->phy_node,
+								 "phy-is-integrated");
+		if (bsp_priv->integrated_phy) {
+			bsp_priv->phy_reset = of_reset_control_get(plat->phy_node, NULL);
+			if (IS_ERR(bsp_priv->phy_reset)) {
+				dev_err(&pdev->dev, "No PHY reset control found.\n");
+				bsp_priv->phy_reset = NULL;
+			}
+		}
+	}
+	dev_info(dev, "integrated PHY? (%s).\n",
+		 bsp_priv->integrated_phy ? "yes" : "no");
+
+	bsp_priv->pdev = pdev;
 
 	return bsp_priv;
 }
@@ -1014,6 +1095,9 @@ static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
 	pm_runtime_enable(dev);
 	pm_runtime_get_sync(dev);
 
+	if (bsp_priv->integrated_phy)
+		rk_gmac_integrated_phy_powerup(bsp_priv);
+
 	return 0;
 }
 
@@ -1021,6 +1105,9 @@ static void rk_gmac_powerdown(struct rk_priv_data *gmac)
 {
 	struct device *dev = &gmac->pdev->dev;
 
+	if (gmac->integrated_phy)
+		rk_gmac_integrated_phy_powerdown(gmac);
+
 	pm_runtime_put_sync(dev);
 	pm_runtime_disable(dev);
 
@@ -1072,12 +1159,16 @@ static int rk_gmac_probe(struct platform_device *pdev)
 	plat_dat->has_gmac = true;
 	plat_dat->fix_mac_speed = rk_fix_speed;
 
-	plat_dat->bsp_priv = rk_gmac_setup(pdev, data);
+	plat_dat->bsp_priv = rk_gmac_setup(pdev, plat_dat, data);
 	if (IS_ERR(plat_dat->bsp_priv)) {
 		ret = PTR_ERR(plat_dat->bsp_priv);
 		goto err_remove_config_dt;
 	}
 
+	ret = rk_gmac_clk_init(plat_dat);
+	if (ret)
+		return ret;
+
 	ret = rk_gmac_powerup(plat_dat->bsp_priv);
 	if (ret)
 		goto err_remove_config_dt;
-- 
1.9.1

[PATCH v5 07/11] net: stmmac: dwmac-rk: Add integrated PHY support for rk3228

[David Wu]

There is only one mac controller in rk3228, which could connect to
external PHY or integrated PHY, use the grf_com_mux bit15 to route
external/integrated PHY.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 9019917..b6db3ff 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -86,6 +86,8 @@ struct rk_priv_data {
 #define RK3228_GRF_MAC_CON0	0x0900
 #define RK3228_GRF_MAC_CON1	0x0904
 
+#define RK3228_GRF_CON_MUX	0x50
+
 /* RK3228_GRF_MAC_CON0 */
 #define RK3228_GMAC_CLK_RX_DL_CFG(val)	HIWORD_UPDATE(val, 0x7F, 7)
 #define RK3228_GMAC_CLK_TX_DL_CFG(val)	HIWORD_UPDATE(val, 0x7F, 0)
@@ -111,6 +113,9 @@ struct rk_priv_data {
 #define RK3228_GMAC_RXCLK_DLY_ENABLE	GRF_BIT(1)
 #define RK3228_GMAC_RXCLK_DLY_DISABLE	GRF_CLR_BIT(1)
 
+/* RK3228_GRF_COM_MUX */
+#define RK3228_GRF_CON_MUX_GMAC_INTEGRATED_PHY	GRF_BIT(15)
+
 static void rk3228_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
@@ -191,11 +196,18 @@ static void rk3228_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 		dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
 }
 
+static void rk3228_integrated_phy_powerup(struct rk_priv_data *priv)
+{
+	regmap_write(priv->grf, RK3228_GRF_CON_MUX,
+		     RK3228_GRF_CON_MUX_GMAC_INTEGRATED_PHY);
+}
+
 static const struct rk_gmac_ops rk3228_ops = {
 	.set_to_rgmii = rk3228_set_to_rgmii,
 	.set_to_rmii = rk3228_set_to_rmii,
 	.set_rgmii_speed = rk3228_set_rgmii_speed,
 	.set_rmii_speed = rk3228_set_rmii_speed,
+	.integrated_phy_powerup =  rk3228_integrated_phy_powerup,
 };
 
 #define RK3288_GRF_SOC_CON1	0x0248
-- 
1.9.1

[PATCH v5 08/11] net: stmmac: dwmac-rk: Add integrated PHY supprot for rk3328

[David Wu]

There are two mac controllers in the rk3328, the one connects
to external PHY, and the other one connects to integrated PHY.
Like the mac of external PHY, the integrated PHY's mac also
needs to configure the related mac registers at GRF.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index b6db3ff..2176403 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -323,6 +323,8 @@ static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 
 #define RK3328_GRF_MAC_CON0	0x0900
 #define RK3328_GRF_MAC_CON1	0x0904
+#define RK3328_GRF_MAC_CON2	0x0908
+#define RK3328_GRF_MACPHY_CON1	0xb04
 
 /* RK3328_GRF_MAC_CON0 */
 #define RK3328_GMAC_CLK_RX_DL_CFG(val)	HIWORD_UPDATE(val, 0x7F, 7)
@@ -349,6 +351,9 @@ static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 #define RK3328_GMAC_RXCLK_DLY_ENABLE	GRF_BIT(1)
 #define RK3328_GMAC_RXCLK_DLY_DISABLE	GRF_CLR_BIT(0)
 
+/* RK3328_GRF_MACPHY_CON1 */
+#define RK3328_MACPHY_RMII_MODE		GRF_BIT(9)
+
 static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
@@ -373,13 +378,17 @@ static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
 static void rk3328_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
+	unsigned int reg;
 
 	if (IS_ERR(bsp_priv->grf)) {
 		dev_err(dev, "Missing rockchip,grf property\n");
 		return;
 	}
 
-	regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+	reg = bsp_priv->integrated_phy ? RK3328_GRF_MAC_CON2 :
+		  RK3328_GRF_MAC_CON1;
+
+	regmap_write(bsp_priv->grf, reg,
 		     RK3328_GMAC_PHY_INTF_SEL_RMII |
 		     RK3328_GMAC_RMII_MODE);
 }
@@ -409,29 +418,40 @@ static void rk3328_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
 static void rk3328_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
+	unsigned int reg;
 
 	if (IS_ERR(bsp_priv->grf)) {
 		dev_err(dev, "Missing rockchip,grf property\n");
 		return;
 	}
 
+	reg = bsp_priv->integrated_phy ? RK3328_GRF_MAC_CON2 :
+		  RK3328_GRF_MAC_CON1;
+
 	if (speed == 10)
-		regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+		regmap_write(bsp_priv->grf, reg,
 			     RK3328_GMAC_RMII_CLK_2_5M |
 			     RK3328_GMAC_SPEED_10M);
 	else if (speed == 100)
-		regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+		regmap_write(bsp_priv->grf, reg,
 			     RK3328_GMAC_RMII_CLK_25M |
 			     RK3328_GMAC_SPEED_100M);
 	else
 		dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
 }
 
+static void rk3328_integrated_phy_powerup(struct rk_priv_data *priv)
+{
+	regmap_write(priv->grf, RK3328_GRF_MACPHY_CON1,
+		     RK3328_MACPHY_RMII_MODE);
+}
+
 static const struct rk_gmac_ops rk3328_ops = {
 	.set_to_rgmii = rk3328_set_to_rgmii,
 	.set_to_rmii = rk3328_set_to_rmii,
 	.set_rgmii_speed = rk3328_set_rgmii_speed,
 	.set_rmii_speed = rk3328_set_rmii_speed,
+	.integrated_phy_powerup =  rk3328_integrated_phy_powerup,
 };
 
 #define RK3366_GRF_SOC_CON6	0x0418
-- 
1.9.1

[PATCH v5 09/11] ARM: dts: rk3228-evb: Enable the integrated PHY for gmac

[David Wu]

This patch enables the integrated PHY for rk3228 evb board
by default.
To use the external 1000M PHY on evb board, need to make
some switch of evb board to be on.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---
changes in v5:
 - Use phy-is-integrated property via PHY node.
 - Move the PHY clock and reset control to PHY node.

 arch/arm/boot/dts/rk3228-evb.dts | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm/boot/dts/rk3228-evb.dts b/arch/arm/boot/dts/rk3228-evb.dts
index 5883433..456ddf7 100644
--- a/arch/arm/boot/dts/rk3228-evb.dts
+++ b/arch/arm/boot/dts/rk3228-evb.dts
@@ -50,6 +50,16 @@
 		device_type = "memory";
 		reg = <0x60000000 0x40000000>;
 	};
+
+	vcc_phy: vcc-phy-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		regulator-name = "vcc_phy";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
 };
 
 &emmc {
@@ -60,6 +70,30 @@
 	status = "okay";
 };
 
+&gmac {
+	assigned-clocks = <&cru SCLK_MAC_SRC>;
+	assigned-clock-rates = <50000000>;
+	clock_in_out = "output";
+	phy-supply = <&vcc_phy>;
+	phy-mode = "rmii";
+	phy-handle = <&phy0>;
+	status = "okay";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		phy@0 {
+			compatible = "ethernet-phy-id1234.d400", "ethernet-phy-ieee802.3-c22";
+			reg = <0>;
+			clocks = <&cru SCLK_MAC_PHY>;
+			resets = <&cru SRST_MACPHY>;
+			phy-is-integrated;
+		};
+	};
+};
+
 &tsadc {
 	status = "okay";
 
-- 
1.9.1

Re: [PATCH v5 09/11] ARM: dts: rk3228-evb: Enable the integrated PHY for gmac

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 961 bytes --]

Hi David,

[auto build test ERROR on net/master]
[also build test ERROR on v4.13-rc4 next-20170811]
[cannot apply to net-next/master]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/David-Wu/Add-the-integrated-PHY-support/20170813-163538
config: arm-omap2plus_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

>> ERROR: Input tree has errors, aborting (use -f to force output)

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 30001 bytes --]

[PATCH v5 10/11] ARM64: dts: rockchip: Add gmac2phy node support for rk3328

[David Wu]

The gmac2phy controller of rk3328 is connected to integrated PHY
directly inside, add the node for the integrated PHY support.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
changes in v5:
 - Use phy-is-integrated property via PHY node.
 - Move the PHY clock, reset control, pinctrl to PHY node. 

 arch/arm64/boot/dts/rockchip/rk3328.dtsi | 39 ++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
index 0be96ce..d48bf5d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -63,6 +63,8 @@
 		i2c1 = &i2c1;
 		i2c2 = &i2c2;
 		i2c3 = &i2c3;
+		ethernet0 = &gmac2io;
+		ethernet1 = &gmac2phy;
 	};
 
 	cpus {
@@ -424,6 +426,43 @@
 		status = "disabled";
 	};
 
+	gmac2phy: ethernet@ff550000 {
+		compatible = "rockchip,rk3328-gmac";
+		reg = <0x0 0xff550000 0x0 0x10000>;
+		rockchip,grf = <&grf>;
+		interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "macirq";
+		clocks = <&cru SCLK_MAC2PHY_SRC>, <&cru SCLK_MAC2PHY_RXTX>,
+			 <&cru SCLK_MAC2PHY_RXTX>, <&cru SCLK_MAC2PHY_REF>,
+			 <&cru ACLK_MAC2PHY>, <&cru PCLK_MAC2PHY>,
+			 <&cru SCLK_MAC2PHY_OUT>;
+		clock-names = "stmmaceth", "mac_clk_rx",
+			      "mac_clk_tx", "clk_mac_ref",
+			      "aclk_mac", "pclk_mac",
+			      "clk_macphy";
+		resets = <&cru SRST_GMAC2PHY_A>, <&cru SRST_MACPHY>;
+		reset-names = "stmmaceth", "mac-phy";
+		phy-mode = "rmii";
+		phy-handle = <&phy>;
+		status = "disabled";
+
+		mdio {
+			compatible = "snps,dwmac-mdio";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			phy: phy@0 {
+				compatible = "ethernet-phy-id1234.d400", "ethernet-phy-ieee802.3-c22";
+				reg = <0>;
+				clocks = <&cru SCLK_MAC2PHY_OUT>;
+				resets = <&cru SRST_MACPHY>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&fephyled_rxm1 &fephyled_linkm1>;
+				phy-is-integrated;
+			};
+		};
+	};
+
 	gic: interrupt-controller@ff811000 {
 		compatible = "arm,gic-400";
 		#interrupt-cells = <3>;
-- 
1.9.1

[PATCH v5 11/11] ARM64: dts: rockchip: Enable gmac2phy for rk3328-evb

[David Wu]

Enable the gmac2phy, make the gmac2phy work on
the rk3328-evb board.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
 arch/arm64/boot/dts/rockchip/rk3328-evb.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328-evb.dts b/arch/arm64/boot/dts/rockchip/rk3328-evb.dts
index cf27239..b9f36da 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-evb.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-evb.dts
@@ -50,6 +50,23 @@
 	chosen {
 		stdout-path = "serial2:1500000n8";
 	};
+
+	vcc_phy: vcc-phy-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_phy";
+		regulator-always-on;
+		regulator-boot-on;
+	};
+};
+
+&gmac2phy {
+	phy-supply = <&vcc_phy>;
+	clock_in_out = "output";
+	assigned-clocks = <&cru SCLK_MAC2PHY_SRC>;
+	assigned-clock-rate = <50000000>;
+	assigned-clocks = <&cru SCLK_MAC2PHY>;
+	assigned-clock-parents = <&cru SCLK_MAC2PHY_SRC>;
+	status = "okay";
 };
 
 &uart2 {
-- 
1.9.1

Re: [PATCH v5 00/11] Add the integrated PHY support

[David Miller]

From: David Wu <david.wu@rock-chips.com>
Date: Thu, 10 Aug 2017 21:56:39 +0800

> The rk3228 and rk3328 support integrated PHY inside, let's enable
> it to work. And the integrated PHY need to do some special setting,
> so register the rockchip integrated PHY driver.

Series applied to net-next, thanks.