* [PATCH RESEND net-next v5 1/2] dt-bindings: net: qca,ar803x: Add IPQ5018 Internal GE PHY support
2025-06-13 1:55 [PATCH RESEND net-next v5 0/2] Add support for the IPQ5018 Internal GE PHY George Moussalem via B4 Relay
@ 2025-06-13 1:55 ` George Moussalem via B4 Relay
2025-06-18 18:42 ` Jakub Kicinski
2025-06-23 6:34 ` Krzysztof Kozlowski
2025-06-13 1:55 ` [PATCH RESEND net-next v5 2/2] net: phy: qcom: at803x: Add Qualcomm IPQ5018 Internal " George Moussalem via B4 Relay
2025-06-23 18:30 ` [PATCH RESEND net-next v5 0/2] Add support for the IPQ5018 Internal GE PHY patchwork-bot+netdevbpf
2 siblings, 2 replies; 6+ messages in thread
From: George Moussalem via B4 Relay @ 2025-06-13 1:55 UTC (permalink / raw)
To: Bjorn Andersson, Michael Turquette, Stephen Boyd, Andrew Lunn,
Heiner Kallweit, Russell King, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, Florian Fainelli, Philipp Zabel, Konrad Dybcio
Cc: linux-arm-msm, linux-clk, linux-kernel, netdev, devicetree,
George Moussalem
From: George Moussalem <george.moussalem@outlook.com>
Document the IPQ5018 Internal Gigabit Ethernet PHY found in the IPQ5018
SoC. Its output pins provide an MDI interface to either an external
switch in a PHY to PHY link scenario or is directly attached to an RJ45
connector.
The PHY supports 10/100/1000 mbps link modes, CDT, auto-negotiation and
802.3az EEE.
For operation, the LDO controller found in the IPQ5018 SoC for which
there is provision in the mdio-4019 driver.
Two common archictures across IPQ5018 boards are:
1. IPQ5018 PHY --> MDI --> RJ45 connector
2. IPQ5018 PHY --> MDI --> External PHY
In a phy to phy architecture, the DAC needs to be configured to
accommodate for the short cable length. As such, add an optional boolean
property so the driver sets preset DAC register values accordingly.
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
---
.../devicetree/bindings/net/qca,ar803x.yaml | 43 ++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/qca,ar803x.yaml b/Documentation/devicetree/bindings/net/qca,ar803x.yaml
index 3acd09f0da863137f8a05e435a1fd28a536c2acd..7ae5110e7aa2cc97498a0ec46b67d8ed8440f3f2 100644
--- a/Documentation/devicetree/bindings/net/qca,ar803x.yaml
+++ b/Documentation/devicetree/bindings/net/qca,ar803x.yaml
@@ -16,8 +16,37 @@ description: |
allOf:
- $ref: ethernet-phy.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - ethernet-phy-id004d.d0c0
+
+ then:
+ properties:
+ reg:
+ const: 7 # This PHY is always at MDIO address 7 in the IPQ5018 SoC
+
+ resets:
+ items:
+ - description:
+ GE PHY MISC reset which triggers a reset across MDC, DSP, RX, and TX lines.
+
+ qcom,dac-preset-short-cable:
+ description:
+ Set if this phy is connected to another phy to adjust the values for
+ MDAC and EDAC to adjust amplitude, bias current settings, and error
+ detection and correction algorithm to accommodate for short cable length.
+ If not set, DAC values are not modified and it is assumed the MDI output pins
+ of this PHY are directly connected to an RJ45 connector.
+ type: boolean
properties:
+ compatible:
+ enum:
+ - ethernet-phy-id004d.d0c0
+
qca,clk-out-frequency:
description: Clock output frequency in Hertz.
$ref: /schemas/types.yaml#/definitions/uint32
@@ -132,3 +161,17 @@ examples:
};
};
};
+ - |
+ #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ge_phy: ethernet-phy@7 {
+ compatible = "ethernet-phy-id004d.d0c0";
+ reg = <7>;
+
+ resets = <&gcc GCC_GEPHY_MISC_ARES>;
+ };
+ };
--
2.49.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH RESEND net-next v5 2/2] net: phy: qcom: at803x: Add Qualcomm IPQ5018 Internal PHY support
2025-06-13 1:55 [PATCH RESEND net-next v5 0/2] Add support for the IPQ5018 Internal GE PHY George Moussalem via B4 Relay
2025-06-13 1:55 ` [PATCH RESEND net-next v5 1/2] dt-bindings: net: qca,ar803x: Add IPQ5018 Internal GE PHY support George Moussalem via B4 Relay
@ 2025-06-13 1:55 ` George Moussalem via B4 Relay
2025-06-23 18:30 ` [PATCH RESEND net-next v5 0/2] Add support for the IPQ5018 Internal GE PHY patchwork-bot+netdevbpf
2 siblings, 0 replies; 6+ messages in thread
From: George Moussalem via B4 Relay @ 2025-06-13 1:55 UTC (permalink / raw)
To: Bjorn Andersson, Michael Turquette, Stephen Boyd, Andrew Lunn,
Heiner Kallweit, Russell King, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, Florian Fainelli, Philipp Zabel, Konrad Dybcio
Cc: linux-arm-msm, linux-clk, linux-kernel, netdev, devicetree,
George Moussalem
From: George Moussalem <george.moussalem@outlook.com>
The IPQ5018 SoC contains a single internal Gigabit Ethernet PHY which
provides an MDI interface directly to an RJ45 connector or an external
switch over a PHY to PHY link.
The PHY supports 10BASE-T/100BASE-TX/1000BASE-T link modes in SGMII
interface mode, CDT, auto-negotiation and 802.3az EEE.
Let's add support for this PHY in the at803x driver as it falls within
the Qualcomm Atheros OUI.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
---
drivers/net/phy/qcom/Kconfig | 2 +-
drivers/net/phy/qcom/at803x.c | 167 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 168 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/qcom/Kconfig b/drivers/net/phy/qcom/Kconfig
index 570626cc8e14d3e6615f74a6377f0f7c9f723e89..84239e08a8dfa466b0a7b2a5ec724a168b692cd2 100644
--- a/drivers/net/phy/qcom/Kconfig
+++ b/drivers/net/phy/qcom/Kconfig
@@ -7,7 +7,7 @@ config AT803X_PHY
select QCOM_NET_PHYLIB
depends on REGULATOR
help
- Currently supports the AR8030, AR8031, AR8033, AR8035 model
+ Currently supports the AR8030, AR8031, AR8033, AR8035, IPQ5018 model
config QCA83XX_PHY
tristate "Qualcomm Atheros QCA833x PHYs"
diff --git a/drivers/net/phy/qcom/at803x.c b/drivers/net/phy/qcom/at803x.c
index 26350b962890b0321153d74758b13d817407d094..43e604171828ce35d5950e02b1d08ee3e4523fdc 100644
--- a/drivers/net/phy/qcom/at803x.c
+++ b/drivers/net/phy/qcom/at803x.c
@@ -19,6 +19,7 @@
#include <linux/regulator/consumer.h>
#include <linux/of.h>
#include <linux/phylink.h>
+#include <linux/reset.h>
#include <linux/sfp.h>
#include <dt-bindings/net/qca-ar803x.h>
@@ -96,6 +97,8 @@
#define ATH8035_PHY_ID 0x004dd072
#define AT8030_PHY_ID_MASK 0xffffffef
+#define IPQ5018_PHY_ID 0x004dd0c0
+
#define QCA9561_PHY_ID 0x004dd042
#define AT803X_PAGE_FIBER 0
@@ -108,6 +111,48 @@
/* disable hibernation mode */
#define AT803X_DISABLE_HIBERNATION_MODE BIT(2)
+#define IPQ5018_PHY_FIFO_CONTROL 0x19
+#define IPQ5018_PHY_FIFO_RESET GENMASK(1, 0)
+
+#define IPQ5018_PHY_DEBUG_EDAC 0x4380
+#define IPQ5018_PHY_MMD1_MDAC 0x8100
+#define IPQ5018_PHY_DAC_MASK GENMASK(15, 8)
+
+/* MDAC and EDAC values for short cable length */
+#define IPQ5018_PHY_DEBUG_EDAC_VAL 0x10
+#define IPQ5018_PHY_MMD1_MDAC_VAL 0x10
+
+#define IPQ5018_PHY_MMD1_MSE_THRESH1 0x1000
+#define IPQ5018_PHY_MMD1_MSE_THRESH2 0x1001
+#define IPQ5018_PHY_PCS_EEE_TX_TIMER 0x8008
+#define IPQ5018_PHY_PCS_EEE_RX_TIMER 0x8009
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL3 0x8074
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL4 0x8075
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL5 0x8076
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL6 0x8077
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL7 0x8078
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL9 0x807a
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL13 0x807e
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL14 0x807f
+
+#define IPQ5018_PHY_MMD1_MSE_THRESH1_VAL 0xf1
+#define IPQ5018_PHY_MMD1_MSE_THRESH2_VAL 0x1f6
+#define IPQ5018_PHY_PCS_EEE_TX_TIMER_VAL 0x7880
+#define IPQ5018_PHY_PCS_EEE_RX_TIMER_VAL 0xc8
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL3_VAL 0xc040
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL4_VAL 0xa060
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL5_VAL 0xc040
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL6_VAL 0xa060
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL7_VAL 0xc24c
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL9_VAL 0xc060
+#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL13_VAL 0xb060
+#define IPQ5018_PHY_PCS_NEAR_ECHO_THRESH_VAL 0x90b0
+
+#define IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE 0x1
+#define IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE_MASK GENMASK(7, 4)
+#define IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE_DEFAULT 0x50
+#define IPQ5018_PHY_DEBUG_ANA_DAC_FILTER 0xa080
+
MODULE_DESCRIPTION("Qualcomm Atheros AR803x PHY driver");
MODULE_AUTHOR("Matus Ujhelyi");
MODULE_LICENSE("GPL");
@@ -133,6 +178,11 @@ struct at803x_context {
u16 led_control;
};
+struct ipq5018_priv {
+ struct reset_control *rst;
+ bool set_short_cable_dac;
+};
+
static int at803x_write_page(struct phy_device *phydev, int page)
{
int mask;
@@ -987,6 +1037,109 @@ static int at8035_probe(struct phy_device *phydev)
return at8035_parse_dt(phydev);
}
+static int ipq5018_cable_test_start(struct phy_device *phydev)
+{
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL3,
+ IPQ5018_PHY_PCS_CDT_THRESH_CTRL3_VAL);
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL4,
+ IPQ5018_PHY_PCS_CDT_THRESH_CTRL4_VAL);
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL5,
+ IPQ5018_PHY_PCS_CDT_THRESH_CTRL5_VAL);
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL6,
+ IPQ5018_PHY_PCS_CDT_THRESH_CTRL6_VAL);
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL7,
+ IPQ5018_PHY_PCS_CDT_THRESH_CTRL7_VAL);
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL9,
+ IPQ5018_PHY_PCS_CDT_THRESH_CTRL9_VAL);
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL13,
+ IPQ5018_PHY_PCS_CDT_THRESH_CTRL13_VAL);
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL3,
+ IPQ5018_PHY_PCS_NEAR_ECHO_THRESH_VAL);
+
+ /* we do all the (time consuming) work later */
+ return 0;
+}
+
+static int ipq5018_config_init(struct phy_device *phydev)
+{
+ struct ipq5018_priv *priv = phydev->priv;
+ u16 val;
+
+ /*
+ * set LDO efuse: first temporarily store ANA_DAC_FILTER value from
+ * debug register as it will be reset once the ANA_LDO_EFUSE register
+ * is written to
+ */
+ val = at803x_debug_reg_read(phydev, IPQ5018_PHY_DEBUG_ANA_DAC_FILTER);
+ at803x_debug_reg_mask(phydev, IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE,
+ IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE_MASK,
+ IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE_DEFAULT);
+ at803x_debug_reg_write(phydev, IPQ5018_PHY_DEBUG_ANA_DAC_FILTER, val);
+
+ /* set 8023AZ EEE TX and RX timer values */
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_EEE_TX_TIMER,
+ IPQ5018_PHY_PCS_EEE_TX_TIMER_VAL);
+ phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_EEE_RX_TIMER,
+ IPQ5018_PHY_PCS_EEE_RX_TIMER_VAL);
+
+ /* set MSE threshold values */
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, IPQ5018_PHY_MMD1_MSE_THRESH1,
+ IPQ5018_PHY_MMD1_MSE_THRESH1_VAL);
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, IPQ5018_PHY_MMD1_MSE_THRESH2,
+ IPQ5018_PHY_MMD1_MSE_THRESH2_VAL);
+
+ /* PHY DAC values are optional and only set in a PHY to PHY link architecture */
+ if (priv->set_short_cable_dac) {
+ /* setting MDAC (Multi-level Digital-to-Analog Converter) in MMD1 */
+ phy_modify_mmd(phydev, MDIO_MMD_PMAPMD, IPQ5018_PHY_MMD1_MDAC,
+ IPQ5018_PHY_DAC_MASK, IPQ5018_PHY_MMD1_MDAC_VAL);
+
+ /* setting EDAC (Error-detection and Correction) in debug register */
+ at803x_debug_reg_mask(phydev, IPQ5018_PHY_DEBUG_EDAC,
+ IPQ5018_PHY_DAC_MASK, IPQ5018_PHY_DEBUG_EDAC_VAL);
+ }
+
+ return 0;
+}
+
+static void ipq5018_link_change_notify(struct phy_device *phydev)
+{
+ /*
+ * Reset the FIFO buffer upon link disconnects to clear any residual data
+ * which may cause issues with the FIFO which it cannot recover from.
+ */
+ mdiobus_modify_changed(phydev->mdio.bus, phydev->mdio.addr,
+ IPQ5018_PHY_FIFO_CONTROL, IPQ5018_PHY_FIFO_RESET,
+ phydev->link ? IPQ5018_PHY_FIFO_RESET : 0);
+}
+
+static int ipq5018_probe(struct phy_device *phydev)
+{
+ struct device *dev = &phydev->mdio.dev;
+ struct ipq5018_priv *priv;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->set_short_cable_dac = of_property_read_bool(dev->of_node,
+ "qcom,dac-preset-short-cable");
+
+ priv->rst = devm_reset_control_array_get_exclusive(dev);
+ if (IS_ERR(priv->rst))
+ return dev_err_probe(dev, PTR_ERR(priv->rst),
+ "failed to acquire reset\n");
+
+ ret = reset_control_reset(priv->rst);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to reset\n");
+
+ phydev->priv = priv;
+
+ return 0;
+}
+
static struct phy_driver at803x_driver[] = {
{
/* Qualcomm Atheros AR8035 */
@@ -1078,6 +1231,19 @@ static struct phy_driver at803x_driver[] = {
.read_status = at803x_read_status,
.soft_reset = genphy_soft_reset,
.config_aneg = at803x_config_aneg,
+}, {
+ PHY_ID_MATCH_EXACT(IPQ5018_PHY_ID),
+ .name = "Qualcomm Atheros IPQ5018 internal PHY",
+ .flags = PHY_IS_INTERNAL | PHY_POLL_CABLE_TEST,
+ .probe = ipq5018_probe,
+ .config_init = ipq5018_config_init,
+ .link_change_notify = ipq5018_link_change_notify,
+ .read_status = at803x_read_status,
+ .config_intr = at803x_config_intr,
+ .handle_interrupt = at803x_handle_interrupt,
+ .cable_test_start = ipq5018_cable_test_start,
+ .cable_test_get_status = qca808x_cable_test_get_status,
+ .soft_reset = genphy_soft_reset,
}, {
/* Qualcomm Atheros QCA9561 */
PHY_ID_MATCH_EXACT(QCA9561_PHY_ID),
@@ -1104,6 +1270,7 @@ static const struct mdio_device_id __maybe_unused atheros_tbl[] = {
{ PHY_ID_MATCH_EXACT(ATH8032_PHY_ID) },
{ PHY_ID_MATCH_EXACT(ATH8035_PHY_ID) },
{ PHY_ID_MATCH_EXACT(ATH9331_PHY_ID) },
+ { PHY_ID_MATCH_EXACT(IPQ5018_PHY_ID) },
{ PHY_ID_MATCH_EXACT(QCA9561_PHY_ID) },
{ }
};
--
2.49.0
^ permalink raw reply related [flat|nested] 6+ messages in thread