diff options
Diffstat (limited to 'target/linux/ipq806x/patches-5.4/094-v5.7-ipq806x-net-mdio-add-ipq8064-mdio-driver.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-5.4/094-v5.7-ipq806x-net-mdio-add-ipq8064-mdio-driver.patch | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-5.4/094-v5.7-ipq806x-net-mdio-add-ipq8064-mdio-driver.patch b/target/linux/ipq806x/patches-5.4/094-v5.7-ipq806x-net-mdio-add-ipq8064-mdio-driver.patch new file mode 100644 index 0000000000..fb8c827d65 --- /dev/null +++ b/target/linux/ipq806x/patches-5.4/094-v5.7-ipq806x-net-mdio-add-ipq8064-mdio-driver.patch @@ -0,0 +1,216 @@ +From caaa71fac36ec8c19145dbf8262a9b77ab09f1a1 Mon Sep 17 00:00:00 2001 +From: Ansuel Smith <ansuelsmth@gmail.com> +Date: Wed, 4 Mar 2020 22:38:32 +0100 +Subject: net: mdio: add ipq8064 mdio driver + +Currently ipq806x soc use generic bitbang driver to +comunicate with the gmac ethernet interface. +Add a dedicated driver created by chunkeey to fix this. + +Co-developed-by: Christian Lamparter <chunkeey@gmail.com> +Signed-off-by: Christian Lamparter <chunkeey@gmail.com> +Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/phy/Kconfig | 8 ++ + drivers/net/phy/Makefile | 1 + + drivers/net/phy/mdio-ipq8064.c | 166 +++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 175 insertions(+) + create mode 100644 drivers/net/phy/mdio-ipq8064.c + +--- a/drivers/net/phy/Kconfig ++++ b/drivers/net/phy/Kconfig +@@ -156,6 +156,14 @@ config MDIO_I2C + + This is library mode. + ++config MDIO_IPQ8064 ++ tristate "Qualcomm IPQ8064 MDIO interface support" ++ depends on HAS_IOMEM && OF_MDIO ++ depends on MFD_SYSCON ++ help ++ This driver supports the MDIO interface found in the network ++ interface units of the IPQ8064 SoC ++ + config MDIO_MOXART + tristate "MOXA ART MDIO interface support" + depends on ARCH_MOXART || COMPILE_TEST +--- a/drivers/net/phy/Makefile ++++ b/drivers/net/phy/Makefile +@@ -51,6 +51,7 @@ obj-$(CONFIG_MDIO_CAVIUM) += mdio-cavium + obj-$(CONFIG_MDIO_GPIO) += mdio-gpio.o + obj-$(CONFIG_MDIO_HISI_FEMAC) += mdio-hisi-femac.o + obj-$(CONFIG_MDIO_I2C) += mdio-i2c.o ++obj-$(CONFIG_MDIO_IPQ8064) += mdio-ipq8064.o + obj-$(CONFIG_MDIO_MOXART) += mdio-moxart.o + obj-$(CONFIG_MDIO_MSCC_MIIM) += mdio-mscc-miim.o + obj-$(CONFIG_MDIO_OCTEON) += mdio-octeon.o +--- /dev/null ++++ b/drivers/net/phy/mdio-ipq8064.c +@@ -0,0 +1,166 @@ ++// SPDX-License-Identifier: GPL-2.0 ++/* Qualcomm IPQ8064 MDIO interface driver ++ * ++ * Copyright (C) 2019 Christian Lamparter <chunkeey@gmail.com> ++ * Copyright (C) 2020 Ansuel Smith <ansuelsmth@gmail.com> ++ */ ++ ++#include <linux/delay.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/regmap.h> ++#include <linux/of_mdio.h> ++#include <linux/phy.h> ++#include <linux/platform_device.h> ++#include <linux/mfd/syscon.h> ++ ++/* MII address register definitions */ ++#define MII_ADDR_REG_ADDR 0x10 ++#define MII_BUSY BIT(0) ++#define MII_WRITE BIT(1) ++#define MII_CLKRANGE_60_100M (0 << 2) ++#define MII_CLKRANGE_100_150M (1 << 2) ++#define MII_CLKRANGE_20_35M (2 << 2) ++#define MII_CLKRANGE_35_60M (3 << 2) ++#define MII_CLKRANGE_150_250M (4 << 2) ++#define MII_CLKRANGE_250_300M (5 << 2) ++#define MII_CLKRANGE_MASK GENMASK(4, 2) ++#define MII_REG_SHIFT 6 ++#define MII_REG_MASK GENMASK(10, 6) ++#define MII_ADDR_SHIFT 11 ++#define MII_ADDR_MASK GENMASK(15, 11) ++ ++#define MII_DATA_REG_ADDR 0x14 ++ ++#define MII_MDIO_DELAY_USEC (1000) ++#define MII_MDIO_RETRY_MSEC (10) ++ ++struct ipq8064_mdio { ++ struct regmap *base; /* NSS_GMAC0_BASE */ ++}; ++ ++static int ++ipq8064_mdio_wait_busy(struct ipq8064_mdio *priv) ++{ ++ u32 busy; ++ ++ return regmap_read_poll_timeout(priv->base, MII_ADDR_REG_ADDR, busy, ++ !(busy & MII_BUSY), MII_MDIO_DELAY_USEC, ++ MII_MDIO_RETRY_MSEC * USEC_PER_MSEC); ++} ++ ++static int ++ipq8064_mdio_read(struct mii_bus *bus, int phy_addr, int reg_offset) ++{ ++ u32 miiaddr = MII_BUSY | MII_CLKRANGE_250_300M; ++ struct ipq8064_mdio *priv = bus->priv; ++ u32 ret_val; ++ int err; ++ ++ /* Reject clause 45 */ ++ if (reg_offset & MII_ADDR_C45) ++ return -EOPNOTSUPP; ++ ++ miiaddr |= ((phy_addr << MII_ADDR_SHIFT) & MII_ADDR_MASK) | ++ ((reg_offset << MII_REG_SHIFT) & MII_REG_MASK); ++ ++ regmap_write(priv->base, MII_ADDR_REG_ADDR, miiaddr); ++ usleep_range(8, 10); ++ ++ err = ipq8064_mdio_wait_busy(priv); ++ if (err) ++ return err; ++ ++ regmap_read(priv->base, MII_DATA_REG_ADDR, &ret_val); ++ return (int)ret_val; ++} ++ ++static int ++ipq8064_mdio_write(struct mii_bus *bus, int phy_addr, int reg_offset, u16 data) ++{ ++ u32 miiaddr = MII_WRITE | MII_BUSY | MII_CLKRANGE_250_300M; ++ struct ipq8064_mdio *priv = bus->priv; ++ ++ /* Reject clause 45 */ ++ if (reg_offset & MII_ADDR_C45) ++ return -EOPNOTSUPP; ++ ++ regmap_write(priv->base, MII_DATA_REG_ADDR, data); ++ ++ miiaddr |= ((phy_addr << MII_ADDR_SHIFT) & MII_ADDR_MASK) | ++ ((reg_offset << MII_REG_SHIFT) & MII_REG_MASK); ++ ++ regmap_write(priv->base, MII_ADDR_REG_ADDR, miiaddr); ++ usleep_range(8, 10); ++ ++ return ipq8064_mdio_wait_busy(priv); ++} ++ ++static int ++ipq8064_mdio_probe(struct platform_device *pdev) ++{ ++ struct device_node *np = pdev->dev.of_node; ++ struct ipq8064_mdio *priv; ++ struct mii_bus *bus; ++ int ret; ++ ++ bus = devm_mdiobus_alloc_size(&pdev->dev, sizeof(*priv)); ++ if (!bus) ++ return -ENOMEM; ++ ++ bus->name = "ipq8064_mdio_bus"; ++ bus->read = ipq8064_mdio_read; ++ bus->write = ipq8064_mdio_write; ++ snprintf(bus->id, MII_BUS_ID_SIZE, "%s-mii", dev_name(&pdev->dev)); ++ bus->parent = &pdev->dev; ++ ++ priv = bus->priv; ++ priv->base = device_node_to_regmap(np); ++ if (IS_ERR(priv->base)) { ++ if (priv->base == ERR_PTR(-EPROBE_DEFER)) ++ return -EPROBE_DEFER; ++ ++ dev_err(&pdev->dev, "error getting device regmap, error=%pe\n", ++ priv->base); ++ return PTR_ERR(priv->base); ++ } ++ ++ ret = of_mdiobus_register(bus, np); ++ if (ret) ++ return ret; ++ ++ platform_set_drvdata(pdev, bus); ++ return 0; ++} ++ ++static int ++ipq8064_mdio_remove(struct platform_device *pdev) ++{ ++ struct mii_bus *bus = platform_get_drvdata(pdev); ++ ++ mdiobus_unregister(bus); ++ ++ return 0; ++} ++ ++static const struct of_device_id ipq8064_mdio_dt_ids[] = { ++ { .compatible = "qcom,ipq8064-mdio" }, ++ { } ++}; ++MODULE_DEVICE_TABLE(of, ipq8064_mdio_dt_ids); ++ ++static struct platform_driver ipq8064_mdio_driver = { ++ .probe = ipq8064_mdio_probe, ++ .remove = ipq8064_mdio_remove, ++ .driver = { ++ .name = "ipq8064-mdio", ++ .of_match_table = ipq8064_mdio_dt_ids, ++ }, ++}; ++ ++module_platform_driver(ipq8064_mdio_driver); ++ ++MODULE_DESCRIPTION("Qualcomm IPQ8064 MDIO interface driver"); ++MODULE_AUTHOR("Christian Lamparter <chunkeey@gmail.com>"); ++MODULE_AUTHOR("Ansuel Smith <ansuelsmth@gmail.com>"); ++MODULE_LICENSE("GPL"); |