[PATCH net-next v2 0/4] MT7530 interrupt support

[PATCH net-next v2 0/4] MT7530 interrupt support

[DENG Qingfang]

Add support for MT7530 interrupt controller.

DENG Qingfang (4):
  net: phy: add MediaTek Gigabit Ethernet PHY driver
  net: dsa: mt7530: add interrupt support
  dt-bindings: net: dsa: add MT7530 interrupt controller binding
  staging: mt7621-dts: enable MT7530 interrupt controller

 .../devicetree/bindings/net/dsa/mt7530.txt    |   6 +
 drivers/net/dsa/mt7530.c                      | 264 ++++++++++++++++--
 drivers/net/dsa/mt7530.h                      |  20 +-
 drivers/net/phy/Kconfig                       |   5 +
 drivers/net/phy/Makefile                      |   1 +
 drivers/net/phy/mediatek-ge.c                 | 112 ++++++++
 drivers/staging/mt7621-dts/mt7621.dtsi        |   4 +
 7 files changed, 384 insertions(+), 28 deletions(-)
 create mode 100644 drivers/net/phy/mediatek-ge.c

-- 
2.25.1

[PATCH net-next v2 1/4] net: phy: add MediaTek Gigabit Ethernet PHY driver

[DENG Qingfang]

Add support for MediaTek Gigabit Ethernet PHYs found in MT7530 and
MT7531 switches.
The initialization procedure is from the vendor driver, but due to lack
of documentation, the function of some register values remains unknown.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
---
v1 -> v2:
Renamed to mediatek-ge.c

 drivers/net/phy/Kconfig       |   5 ++
 drivers/net/phy/Makefile      |   1 +
 drivers/net/phy/mediatek-ge.c | 112 ++++++++++++++++++++++++++++++++++
 3 files changed, 118 insertions(+)
 create mode 100644 drivers/net/phy/mediatek-ge.c

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 25511f39b01f..1534e408505b 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -207,6 +207,11 @@ config MARVELL_88X2222_PHY
 	  Support for the Marvell 88X2222 Dual-port Multi-speed Ethernet
 	  Transceiver.
 
+config MEDIATEK_GE_PHY
+	tristate "MediaTek Gigabit Ethernet PHYs"
+	help
+	  Supports the MediaTek Gigabit Ethernet PHYs.
+
 config MICREL_PHY
 	tristate "Micrel PHYs"
 	help
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index bcda7ed2455d..24328d7cf931 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -64,6 +64,7 @@ obj-$(CONFIG_LXT_PHY)		+= lxt.o
 obj-$(CONFIG_MARVELL_10G_PHY)	+= marvell10g.o
 obj-$(CONFIG_MARVELL_PHY)	+= marvell.o
 obj-$(CONFIG_MARVELL_88X2222_PHY)	+= marvell-88x2222.o
+obj-$(CONFIG_MEDIATEK_GE_PHY)	+= mediatek-ge.o
 obj-$(CONFIG_MESON_GXL_PHY)	+= meson-gxl.o
 obj-$(CONFIG_MICREL_KS8995MA)	+= spi_ks8995.o
 obj-$(CONFIG_MICREL_PHY)	+= micrel.o
diff --git a/drivers/net/phy/mediatek-ge.c b/drivers/net/phy/mediatek-ge.c
new file mode 100644
index 000000000000..11ff335d6228
--- /dev/null
+++ b/drivers/net/phy/mediatek-ge.c
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <linux/bitfield.h>
+#include <linux/module.h>
+#include <linux/phy.h>
+
+#define MTK_EXT_PAGE_ACCESS		0x1f
+#define MTK_PHY_PAGE_STANDARD		0x0000
+#define MTK_PHY_PAGE_EXTENDED		0x0001
+#define MTK_PHY_PAGE_EXTENDED_2		0x0002
+#define MTK_PHY_PAGE_EXTENDED_3		0x0003
+#define MTK_PHY_PAGE_EXTENDED_2A30	0x2a30
+#define MTK_PHY_PAGE_EXTENDED_52B5	0x52b5
+
+static int mtk_gephy_read_page(struct phy_device *phydev)
+{
+	return __phy_read(phydev, MTK_EXT_PAGE_ACCESS);
+}
+
+static int mtk_gephy_write_page(struct phy_device *phydev, int page)
+{
+	return __phy_write(phydev, MTK_EXT_PAGE_ACCESS, page);
+}
+
+static void mtk_gephy_config_init(struct phy_device *phydev)
+{
+	/* Disable EEE */
+	phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0);
+
+	/* Enable HW auto downshift */
+	phy_modify_paged(phydev, MTK_PHY_PAGE_EXTENDED, 0x14, 0, BIT(4));
+
+	/* Increase SlvDPSready time */
+	phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
+	__phy_write(phydev, 0x10, 0xafae);
+	__phy_write(phydev, 0x12, 0x2f);
+	__phy_write(phydev, 0x10, 0x8fae);
+	phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
+
+	/* Adjust 100_mse_threshold */
+	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x123, 0xffff);
+
+	/* Disable mcc */
+	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xa6, 0x300);
+}
+
+static int mt7530_phy_config_init(struct phy_device *phydev)
+{
+	mtk_gephy_config_init(phydev);
+
+	/* Increase post_update_timer */
+	phy_write_paged(phydev, MTK_PHY_PAGE_EXTENDED_3, 0x11, 0x4b);
+
+	return 0;
+}
+
+static int mt7531_phy_config_init(struct phy_device *phydev)
+{
+	if (phydev->interface != PHY_INTERFACE_MODE_INTERNAL)
+		return -EINVAL;
+
+	mtk_gephy_config_init(phydev);
+
+	/* PHY link down power saving enable */
+	phy_set_bits(phydev, 0x17, BIT(4));
+	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, 0xc6, 0x300);
+
+	/* Set TX Pair delay selection */
+	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x13, 0x404);
+	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x14, 0x404);
+
+	return 0;
+}
+
+static struct phy_driver mtk_gephy_driver[] = {
+	{
+		PHY_ID_MATCH_EXACT(0x03a29412),
+		.name		= "MediaTek MT7530 PHY",
+		.config_init	= mt7530_phy_config_init,
+		/* Interrupts are handled by the switch, not the PHY
+		 * itself.
+		 */
+		.config_intr	= genphy_no_config_intr,
+		.handle_interrupt = genphy_handle_interrupt_no_ack,
+		.read_page	= mtk_gephy_read_page,
+		.write_page	= mtk_gephy_write_page,
+	},
+	{
+		PHY_ID_MATCH_EXACT(0x03a29441),
+		.name		= "MediaTek MT7531 PHY",
+		.config_init	= mt7531_phy_config_init,
+		/* Interrupts are handled by the switch, not the PHY
+		 * itself.
+		 */
+		.config_intr	= genphy_no_config_intr,
+		.handle_interrupt = genphy_handle_interrupt_no_ack,
+		.read_page	= mtk_gephy_read_page,
+		.write_page	= mtk_gephy_write_page,
+	},
+};
+
+module_phy_driver(mtk_gephy_driver);
+
+static struct mdio_device_id __maybe_unused mtk_gephy_tbl[] = {
+	{ PHY_ID_MATCH_VENDOR(0x03a29400) },
+	{ }
+};
+
+MODULE_DESCRIPTION("MediaTek Gigabit Ethernet PHY driver");
+MODULE_AUTHOR("DENG, Qingfang <dqfext@gmail.com>");
+MODULE_LICENSE("GPL");
+
+MODULE_DEVICE_TABLE(mdio, mtk_gephy_tbl);
-- 
2.25.1

[PATCH net-next v2 2/4] net: dsa: mt7530: add interrupt support

[DENG Qingfang]

Add support for MT7530 interrupt controller to handle internal PHYs.
In order to assign an IRQ number to each PHY, the registration of MDIO bus
is also done in this driver.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
---
v1 -> v2:
Removed the PHY dependency.

 drivers/net/dsa/mt7530.c | 264 +++++++++++++++++++++++++++++++++++----
 drivers/net/dsa/mt7530.h |  20 ++-
 2 files changed, 256 insertions(+), 28 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 96f7c9eede35..db838343fb05 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -10,6 +10,7 @@
 #include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <linux/netdevice.h>
+#include <linux/of_irq.h>
 #include <linux/of_mdio.h>
 #include <linux/of_net.h>
 #include <linux/of_platform.h>
@@ -596,18 +597,14 @@ mt7530_mib_reset(struct dsa_switch *ds)
 	mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_ACTIVATE);
 }
 
-static int mt7530_phy_read(struct dsa_switch *ds, int port, int regnum)
+static int mt7530_phy_read(struct mt7530_priv *priv, int port, int regnum)
 {
-	struct mt7530_priv *priv = ds->priv;
-
 	return mdiobus_read_nested(priv->bus, port, regnum);
 }
 
-static int mt7530_phy_write(struct dsa_switch *ds, int port, int regnum,
+static int mt7530_phy_write(struct mt7530_priv *priv, int port, int regnum,
 			    u16 val)
 {
-	struct mt7530_priv *priv = ds->priv;
-
 	return mdiobus_write_nested(priv->bus, port, regnum, val);
 }
 
@@ -785,9 +782,8 @@ mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
 }
 
 static int
-mt7531_ind_phy_read(struct dsa_switch *ds, int port, int regnum)
+mt7531_ind_phy_read(struct mt7530_priv *priv, int port, int regnum)
 {
-	struct mt7530_priv *priv = ds->priv;
 	int devad;
 	int ret;
 
@@ -803,10 +799,9 @@ mt7531_ind_phy_read(struct dsa_switch *ds, int port, int regnum)
 }
 
 static int
-mt7531_ind_phy_write(struct dsa_switch *ds, int port, int regnum,
+mt7531_ind_phy_write(struct mt7530_priv *priv, int port, int regnum,
 		     u16 data)
 {
-	struct mt7530_priv *priv = ds->priv;
 	int devad;
 	int ret;
 
@@ -822,6 +817,22 @@ mt7531_ind_phy_write(struct dsa_switch *ds, int port, int regnum,
 	return ret;
 }
 
+static int
+mt753x_phy_read(struct mii_bus *bus, int port, int regnum)
+{
+	struct mt7530_priv *priv = bus->priv;
+
+	return priv->info->phy_read(priv, port, regnum);
+}
+
+static int
+mt753x_phy_write(struct mii_bus *bus, int port, int regnum, u16 val)
+{
+	struct mt7530_priv *priv = bus->priv;
+
+	return priv->info->phy_write(priv, port, regnum, val);
+}
+
 static void
 mt7530_get_strings(struct dsa_switch *ds, int port, u32 stringset,
 		   uint8_t *data)
@@ -1828,6 +1839,210 @@ mt7530_setup_gpio(struct mt7530_priv *priv)
 }
 #endif /* CONFIG_GPIOLIB */
 
+static irqreturn_t
+mt7530_irq_thread_fn(int irq, void *dev_id)
+{
+	struct mt7530_priv *priv = dev_id;
+	bool handled = false;
+	u32 val;
+	int p;
+
+	mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
+	val = mt7530_mii_read(priv, MT7530_SYS_INT_STS);
+	mt7530_mii_write(priv, MT7530_SYS_INT_STS, val);
+	mutex_unlock(&priv->bus->mdio_lock);
+
+	for (p = 0; p < MT7530_NUM_PHYS; p++) {
+		if (BIT(p) & val) {
+			unsigned int irq;
+
+			irq = irq_find_mapping(priv->irq_domain, p);
+			handle_nested_irq(irq);
+			handled = true;
+		}
+	}
+
+	return IRQ_RETVAL(handled);
+}
+
+static void
+mt7530_irq_mask(struct irq_data *d)
+{
+	struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
+
+	priv->irq_enable &= ~BIT(d->hwirq);
+}
+
+static void
+mt7530_irq_unmask(struct irq_data *d)
+{
+	struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
+
+	priv->irq_enable |= BIT(d->hwirq);
+}
+
+static void
+mt7530_irq_bus_lock(struct irq_data *d)
+{
+	struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
+
+	mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
+}
+
+static void
+mt7530_irq_bus_sync_unlock(struct irq_data *d)
+{
+	struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
+
+	mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
+	mutex_unlock(&priv->bus->mdio_lock);
+}
+
+static struct irq_chip mt7530_irq_chip = {
+	.name = KBUILD_MODNAME,
+	.irq_mask = mt7530_irq_mask,
+	.irq_unmask = mt7530_irq_unmask,
+	.irq_bus_lock = mt7530_irq_bus_lock,
+	.irq_bus_sync_unlock = mt7530_irq_bus_sync_unlock,
+};
+
+static int
+mt7530_irq_map(struct irq_domain *domain, unsigned int irq,
+	       irq_hw_number_t hwirq)
+{
+	irq_set_chip_data(irq, domain->host_data);
+	irq_set_chip_and_handler(irq, &mt7530_irq_chip, handle_simple_irq);
+	irq_set_nested_thread(irq, true);
+	irq_set_noprobe(irq);
+
+	return 0;
+}
+
+static const struct irq_domain_ops mt7530_irq_domain_ops = {
+	.map = mt7530_irq_map,
+	.xlate = irq_domain_xlate_onecell,
+};
+
+static void
+mt7530_setup_mdio_irq(struct mt7530_priv *priv)
+{
+	struct dsa_switch *ds = priv->ds;
+	int p;
+
+	for (p = 0; p < MT7530_NUM_PHYS; p++) {
+		if (BIT(p) & ds->phys_mii_mask) {
+			unsigned int irq;
+
+			irq = irq_create_mapping(priv->irq_domain, p);
+			ds->slave_mii_bus->irq[p] = irq;
+		}
+	}
+}
+
+static int
+mt7530_setup_irq(struct mt7530_priv *priv)
+{
+	struct device *dev = priv->dev;
+	struct device_node *np = dev->of_node;
+	int ret;
+
+	if (!of_property_read_bool(np, "interrupt-controller")) {
+		dev_info(dev, "no interrupt support\n");
+		return 0;
+	}
+
+	priv->irq = of_irq_get(np, 0);
+	if (priv->irq <= 0) {
+		dev_err(dev, "failed to get parent IRQ: %d\n", priv->irq);
+		return priv->irq ? : -EINVAL;
+	}
+
+	priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS,
+						 &mt7530_irq_domain_ops, priv);
+	if (!priv->irq_domain) {
+		dev_err(dev, "failed to create IRQ domain\n");
+		return -ENOMEM;
+	}
+
+	/* This register must be set for MT7530 to properly fire interrupts */
+	if (priv->id != ID_MT7531)
+		mt7530_set(priv, MT7530_TOP_SIG_CTRL, TOP_SIG_CTRL_NORMAL);
+
+	ret = request_threaded_irq(priv->irq, NULL, mt7530_irq_thread_fn,
+				   IRQF_ONESHOT, KBUILD_MODNAME, priv);
+	if (ret) {
+		irq_domain_remove(priv->irq_domain);
+		dev_err(dev, "failed to request IRQ: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void
+mt7530_free_mdio_irq(struct mt7530_priv *priv)
+{
+	int p;
+
+	for (p = 0; p < MT7530_NUM_PHYS; p++) {
+		if (BIT(p) & priv->ds->phys_mii_mask) {
+			unsigned int irq;
+
+			irq = irq_find_mapping(priv->irq_domain, p);
+			irq_dispose_mapping(irq);
+		}
+	}
+}
+
+static void
+mt7530_free_irq_common(struct mt7530_priv *priv)
+{
+	free_irq(priv->irq, priv);
+	irq_domain_remove(priv->irq_domain);
+}
+
+static void
+mt7530_free_irq(struct mt7530_priv *priv)
+{
+	mt7530_free_mdio_irq(priv);
+	mt7530_free_irq_common(priv);
+}
+
+static int
+mt7530_setup_mdio(struct mt7530_priv *priv)
+{
+	struct dsa_switch *ds = priv->ds;
+	struct device *dev = priv->dev;
+	struct mii_bus *bus;
+	static int idx;
+	int ret;
+
+	bus = devm_mdiobus_alloc(dev);
+	if (!bus)
+		return -ENOMEM;
+
+	ds->slave_mii_bus = bus;
+	bus->priv = priv;
+	bus->name = KBUILD_MODNAME "-mii";
+	snprintf(bus->id, MII_BUS_ID_SIZE, KBUILD_MODNAME "-%d", idx++);
+	bus->read = mt753x_phy_read;
+	bus->write = mt753x_phy_write;
+	bus->parent = dev;
+	bus->phy_mask = ~ds->phys_mii_mask;
+
+	if (priv->irq)
+		mt7530_setup_mdio_irq(priv);
+
+	ret = mdiobus_register(bus);
+	if (ret) {
+		dev_err(dev, "failed to register MDIO bus: %d\n", ret);
+		if (priv->irq)
+			mt7530_free_mdio_irq(priv);
+	}
+
+	return ret;
+}
+
 static int
 mt7530_setup(struct dsa_switch *ds)
 {
@@ -2791,24 +3006,20 @@ static int
 mt753x_setup(struct dsa_switch *ds)
 {
 	struct mt7530_priv *priv = ds->priv;
+	int ret = priv->info->sw_setup(ds);
 
-	return priv->info->sw_setup(ds);
-}
-
-static int
-mt753x_phy_read(struct dsa_switch *ds, int port, int regnum)
-{
-	struct mt7530_priv *priv = ds->priv;
+	if (ret)
+		return ret;
 
-	return priv->info->phy_read(ds, port, regnum);
-}
+	ret = mt7530_setup_irq(priv);
+	if (ret)
+		return ret;
 
-static int
-mt753x_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val)
-{
-	struct mt7530_priv *priv = ds->priv;
+	ret = mt7530_setup_mdio(priv);
+	if (ret && priv->irq)
+		mt7530_free_irq_common(priv);
 
-	return priv->info->phy_write(ds, port, regnum, val);
+	return ret;
 }
 
 static int mt753x_get_mac_eee(struct dsa_switch *ds, int port,
@@ -2845,8 +3056,6 @@ static const struct dsa_switch_ops mt7530_switch_ops = {
 	.get_tag_protocol	= mtk_get_tag_protocol,
 	.setup			= mt753x_setup,
 	.get_strings		= mt7530_get_strings,
-	.phy_read		= mt753x_phy_read,
-	.phy_write		= mt753x_phy_write,
 	.get_ethtool_stats	= mt7530_get_ethtool_stats,
 	.get_sset_count		= mt7530_get_sset_count,
 	.set_ageing_time	= mt7530_set_ageing_time,
@@ -3029,6 +3238,9 @@ mt7530_remove(struct mdio_device *mdiodev)
 		dev_err(priv->dev, "Failed to disable io pwr: %d\n",
 			ret);
 
+	if (priv->irq)
+		mt7530_free_irq(priv);
+
 	dsa_unregister_switch(priv->ds);
 	mutex_destroy(&priv->reg_mutex);
 }
diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h
index 0204da486f3a..334d610a503d 100644
--- a/drivers/net/dsa/mt7530.h
+++ b/drivers/net/dsa/mt7530.h
@@ -7,6 +7,7 @@
 #define __MT7530_H
 
 #define MT7530_NUM_PORTS		7
+#define MT7530_NUM_PHYS			5
 #define MT7530_CPU_PORT			6
 #define MT7530_NUM_FDB_RECORDS		2048
 #define MT7530_ALL_MEMBERS		0xff
@@ -393,6 +394,12 @@ enum mt7531_sgmii_force_duplex {
 #define  SYS_CTRL_SW_RST		BIT(1)
 #define  SYS_CTRL_REG_RST		BIT(0)
 
+/* Register for system interrupt */
+#define MT7530_SYS_INT_EN		0x7008
+
+/* Register for system interrupt status */
+#define MT7530_SYS_INT_STS		0x700c
+
 /* Register for PHY Indirect Access Control */
 #define MT7531_PHY_IAC			0x701C
 #define  MT7531_PHY_ACS_ST		BIT(31)
@@ -714,6 +721,8 @@ static const char *p5_intf_modes(unsigned int p5_interface)
 	}
 }
 
+struct mt7530_priv;
+
 /* struct mt753x_info -	This is the main data structure for holding the specific
  *			part for each supported device
  * @sw_setup:		Holding the handler to a device initialization
@@ -738,8 +747,8 @@ struct mt753x_info {
 	enum mt753x_id id;
 
 	int (*sw_setup)(struct dsa_switch *ds);
-	int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
-	int (*phy_write)(struct dsa_switch *ds, int port, int regnum, u16 val);
+	int (*phy_read)(struct mt7530_priv *priv, int port, int regnum);
+	int (*phy_write)(struct mt7530_priv *priv, int port, int regnum, u16 val);
 	int (*pad_setup)(struct dsa_switch *ds, phy_interface_t interface);
 	int (*cpu_port_config)(struct dsa_switch *ds, int port);
 	bool (*phy_mode_supported)(struct dsa_switch *ds, int port,
@@ -773,6 +782,10 @@ struct mt753x_info {
  *			registers
  * @p6_interface	Holding the current port 6 interface
  * @p5_intf_sel:	Holding the current port 5 interface select
+ *
+ * @irq:		IRQ number of the switch
+ * @irq_domain:		IRQ domain of the switch irq_chip
+ * @irq_enable:		IRQ enable bits, synced to SYS_INT_EN
  */
 struct mt7530_priv {
 	struct device		*dev;
@@ -794,6 +807,9 @@ struct mt7530_priv {
 	struct mt7530_port	ports[MT7530_NUM_PORTS];
 	/* protect among processes for registers access*/
 	struct mutex reg_mutex;
+	int irq;
+	struct irq_domain *irq_domain;
+	u32 irq_enable;
 };
 
 struct mt7530_hw_vlan_entry {
-- 
2.25.1

[PATCH net-next v2 3/4] dt-bindings: net: dsa: add MT7530 interrupt controller binding

[DENG Qingfang]

Add device tree binding to support MT7530 interrupt controller.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
---
v1 -> v2:
Fixed plural (property -> properties)

 Documentation/devicetree/bindings/net/dsa/mt7530.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/mt7530.txt b/Documentation/devicetree/bindings/net/dsa/mt7530.txt
index de04626a8e9d..18247ebfc487 100644
--- a/Documentation/devicetree/bindings/net/dsa/mt7530.txt
+++ b/Documentation/devicetree/bindings/net/dsa/mt7530.txt
@@ -81,6 +81,12 @@ Optional properties:
 - gpio-controller: Boolean; if defined, MT7530's LED controller will run on
 	GPIO mode.
 - #gpio-cells: Must be 2 if gpio-controller is defined.
+- interrupt-controller: Boolean; Enables the internal interrupt controller.
+
+If interrupt-controller is defined, the following properties are required.
+
+- #interrupt-cells: Must be 1.
+- interrupts: Parent interrupt for the interrupt controller.
 
 See Documentation/devicetree/bindings/net/dsa/dsa.txt for a list of additional
 required, optional properties and how the integrated switch subnodes must
-- 
2.25.1

[PATCH net-next v2 4/4] staging: mt7621-dts: enable MT7530 interrupt controller

[DENG Qingfang]

Enable MT7530 interrupt controller in the MT7621 SoC.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
---
v1 -> v2:
No changes.

 drivers/staging/mt7621-dts/mt7621.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/staging/mt7621-dts/mt7621.dtsi b/drivers/staging/mt7621-dts/mt7621.dtsi
index f0c9ae757bcd..093a7f8091b5 100644
--- a/drivers/staging/mt7621-dts/mt7621.dtsi
+++ b/drivers/staging/mt7621-dts/mt7621.dtsi
@@ -437,6 +437,10 @@ switch0: switch0@0 {
 				mediatek,mcm;
 				resets = <&rstctrl 2>;
 				reset-names = "mcm";
+				interrupt-controller;
+				#interrupt-cells = <1>;
+				interrupt-parent = <&gic>;
+				interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;
 
 				ports {
 					#address-cells = <1>;
-- 
2.25.1

Re: [PATCH net-next v2 1/4] net: phy: add MediaTek Gigabit Ethernet PHY driver

[Andrew Lunn]

> +static void mtk_gephy_config_init(struct phy_device *phydev)
> +{
> +	/* Disable EEE */
> +	phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0);

Is EEE broken on this PHY? Or is this just to get it into a defined
state?

Otherwise

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

Re: [PATCH net-next v2 1/4] net: phy: add MediaTek Gigabit Ethernet PHY driver

[DENG Qingfang]

On Thu, May 20, 2021 at 02:59:21AM +0200, Andrew Lunn wrote:
> > +static void mtk_gephy_config_init(struct phy_device *phydev)
> > +{
> > +	/* Disable EEE */
> > +	phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0);
> 
> Is EEE broken on this PHY? Or is this just to get it into a defined
> state?

As I said in commit message, the initialization (including EEE) is
from the vendor driver.
I have also tested it with EEE enabled by default on one of my APs,
and got occasional link drops.

> 
> Otherwise
> 
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>
> 
>     Andrew

Re: [PATCH net-next v2 1/4] net: phy: add MediaTek Gigabit Ethernet PHY driver

[Landen Chao]

On Thu, 2021-05-20 at 10:38 +0800, DENG Qingfang wrote:
> On Thu, May 20, 2021 at 02:59:21AM +0200, Andrew Lunn wrote:
> > > +static void mtk_gephy_config_init(struct phy_device *phydev)
> > > +{
> > > +	/* Disable EEE */
> > > +	phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0);
> > 
> > Is EEE broken on this PHY? Or is this just to get it into a defined
> > state?
> 
> As I said in commit message, the initialization (including EEE) is
> from the vendor driver.
> I have also tested it with EEE enabled by default on one of my APs,
> and got occasional link drops.
> 

EEE of the 10-year-old MT7530 internal gephy has many IOT problems, so
it is recommended to disable its EEE.
EEE of the MT7531 internal gephy has been updated, but it is not yet
widely used.
Therefore, EEE is disabled in vendor driver.

Landen
> > Otherwise
> > 
> > Reviewed-by: Andrew Lunn <andrew@lunn.ch>
> > 
> >     Andrew

Re: [PATCH net-next v2 0/4] MT7530 interrupt support

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (refs/heads/master):

On Wed, 19 May 2021 11:31:58 +0800 you wrote:
> Add support for MT7530 interrupt controller.
> 
> DENG Qingfang (4):
>   net: phy: add MediaTek Gigabit Ethernet PHY driver
>   net: dsa: mt7530: add interrupt support
>   dt-bindings: net: dsa: add MT7530 interrupt controller binding
>   staging: mt7621-dts: enable MT7530 interrupt controller
> 
> [...]

Here is the summary with links:
  - [net-next,v2,1/4] net: phy: add MediaTek Gigabit Ethernet PHY driver
    https://git.kernel.org/netdev/net-next/c/e40d2cca0189
  - [net-next,v2,2/4] net: dsa: mt7530: add interrupt support
    https://git.kernel.org/netdev/net-next/c/ba751e28d442
  - [net-next,v2,3/4] dt-bindings: net: dsa: add MT7530 interrupt controller binding
    https://git.kernel.org/netdev/net-next/c/4006f986c091
  - [net-next,v2,4/4] staging: mt7621-dts: enable MT7530 interrupt controller
    https://git.kernel.org/netdev/net-next/c/f494f0935ffb

You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html

Re: [PATCH net-next v2 4/4] staging: mt7621-dts: enable MT7530 interrupt controller

[Greg Kroah-Hartman]

On Wed, May 19, 2021 at 11:32:02AM +0800, DENG Qingfang wrote:
> Enable MT7530 interrupt controller in the MT7621 SoC.
> 
> Signed-off-by: DENG Qingfang <dqfext@gmail.com>
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>
> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
> Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
> ---
> v1 -> v2:
> No changes.
> 

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>