lede/target/linux/qualcommax/patches-6.6/0711-net-phy-qcom-Introduce-IPQ5018-internal-PHY-driver.patch

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From 77ad12b3a5e21cae859247c0b82cf9a5b661e531 Mon Sep 17 00:00:00 2001
2025-02-07 12:04:28 +08:00
From: Ziyang Huang <hzyitc@outlook.com>
Date: Sun, 8 Sep 2024 16:40:11 +0800
Subject: [PATCH 1/3] net: phy: qcom: Introduce IPQ5018 internal PHY driver
2025-02-07 12:04:28 +08:00
Introduce the internal GE PHY driver, part of the Qualcomm IPQ50xx SoC.
The driver registers two clock providers needed and referenced by the GCC
using DT properties and phandles.
Signed-off-by: Ziyang Huang <hzyitc@outlook.com>
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
---
drivers/net/phy/qcom/Kconfig | 6 ++
drivers/net/phy/qcom/Makefile | 1 +
drivers/net/phy/qcom/ipq5018.c | 138 +++++++++++++++++++++++++++++++++
3 files changed, 145 insertions(+)
create mode 100644 drivers/net/phy/qcom/ipq5018.c
--- a/drivers/net/phy/qcom/Kconfig
+++ b/drivers/net/phy/qcom/Kconfig
@@ -9,6 +9,12 @@ config AT803X_PHY
help
Currently supports the AR8030, AR8031, AR8033, AR8035 model
+config IPQ5018_PHY
+ tristate "Qualcomm IPQ5018 internal PHYs"
+ select QCOM_NET_PHYLIB
+ help
+ Currently supports the Qualcomm IPQ5018 internal PHY
+
config QCA83XX_PHY
tristate "Qualcomm Atheros QCA833x PHYs"
select QCOM_NET_PHYLIB
--- a/drivers/net/phy/qcom/Makefile
+++ b/drivers/net/phy/qcom/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_QCOM_NET_PHYLIB) += qcom-phy-lib.o
obj-$(CONFIG_AT803X_PHY) += at803x.o
+obj-$(CONFIG_IPQ5018_PHY) += ipq5018.o
obj-$(CONFIG_QCA83XX_PHY) += qca83xx.o
obj-$(CONFIG_QCA808X_PHY) += qca808x.o
obj-$(CONFIG_QCA807X_PHY) += qca807x.o
--- /dev/null
+++ b/drivers/net/phy/qcom/ipq5018.c
@@ -0,0 +1,138 @@
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/phy.h>
+#include <linux/reset.h>
+
+#include "qcom.h"
+
+#define IPQ5018_PHY_ID 0x004dd0c0
+
+#define TX_RX_CLK_RATE 125000000 /* 125M */
+
+#define IPQ5018_PHY_FIFO_CONTROL 0x19
+#define IPQ5018_PHY_FIFO_RESET GENMASK(1, 0)
+
+struct ipq5018_phy {
+ int num_clks;
+ struct clk_bulk_data *clks;
+ struct reset_control *rst;
+
+ struct clk_hw *clk_rx, *clk_tx;
+ struct clk_hw_onecell_data *clk_data;
+};
+
+static int ipq5018_probe(struct phy_device *phydev)
+{
+ struct ipq5018_phy *priv;
+ struct device *dev = &phydev->mdio.dev;
+ char name[64];
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return dev_err_probe(dev, -ENOMEM,
+ "failed to allocate priv\n");
+
+ priv->num_clks = devm_clk_bulk_get_all(dev, &priv->clks);
+ if (priv->num_clks < 0)
+ return dev_err_probe(dev, priv->num_clks,
+ "failed to acquire clocks\n");
+
+ ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "failed to enable clocks\n");
+
+ priv->rst = devm_reset_control_array_get_exclusive(dev);
+ if (IS_ERR_OR_NULL(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");
+
+ snprintf(name, sizeof(name), "%s#rx", dev_name(dev));
+ priv->clk_rx = clk_hw_register_fixed_rate(dev, name, NULL, 0,
+ TX_RX_CLK_RATE);
+ if (IS_ERR_OR_NULL(priv->clk_rx))
+ return dev_err_probe(dev, PTR_ERR(priv->clk_rx),
+ "failed to register rx clock\n");
+
+ snprintf(name, sizeof(name), "%s#tx", dev_name(dev));
+ priv->clk_tx = clk_hw_register_fixed_rate(dev, name, NULL, 0,
+ TX_RX_CLK_RATE);
+ if (IS_ERR_OR_NULL(priv->clk_tx))
+ return dev_err_probe(dev, PTR_ERR(priv->clk_tx),
+ "failed to register tx clock\n");
+
+ priv->clk_data = devm_kzalloc(dev,
+ struct_size(priv->clk_data, hws, 2),
+ GFP_KERNEL);
+ if (!priv->clk_data)
+ return dev_err_probe(dev, -ENOMEM,
+ "failed to allocate clk_data\n");
+
+ priv->clk_data->num = 2;
+ priv->clk_data->hws[0] = priv->clk_rx;
+ priv->clk_data->hws[1] = priv->clk_tx;
+ ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
+ priv->clk_data);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "fail to register clock provider\n");
+
+ return 0;
+}
+
+static int ipq5018_soft_reset(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = phy_modify(phydev, IPQ5018_PHY_FIFO_CONTROL,
+ IPQ5018_PHY_FIFO_RESET, 0);
+ if (ret < 0)
+ return ret;
+
+ msleep(50);
+
+ ret = phy_modify(phydev, IPQ5018_PHY_FIFO_CONTROL,
+ IPQ5018_PHY_FIFO_RESET, IPQ5018_PHY_FIFO_RESET);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int ipq5018_cable_test_start(struct phy_device *phydev)
+{
+ /* we do all the (time consuming) work later */
+ return 0;
+}
+
+static struct phy_driver ipq5018_internal_phy_driver[] = {
+ {
+ PHY_ID_MATCH_EXACT(IPQ5018_PHY_ID),
+ .name = "Qualcomm IPQ5018 internal PHY",
+ .flags = PHY_IS_INTERNAL | PHY_POLL_CABLE_TEST,
+ .probe = ipq5018_probe,
+ .soft_reset = ipq5018_soft_reset,
+ .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,
+ },
+};
+module_phy_driver(ipq5018_internal_phy_driver);
+
+static struct mdio_device_id __maybe_unused ipq5018_internal_phy_ids[] = {
+ { PHY_ID_MATCH_EXACT(IPQ5018_PHY_ID) },
+ { }
+};
+MODULE_DEVICE_TABLE(mdio, ipq5018_internal_phy_ids);
+
+MODULE_DESCRIPTION("Qualcomm IPQ5018 internal PHY driver");
+MODULE_AUTHOR("Ziyang Huang <hzyitc@outlook.com>");