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a=openpgp-sha256; l=5103; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=D945pissAzYJ1WSZ4r3fmdjGbNimiMhFB6YLYYkLGPU=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBm0C96yL9zJFlSohV/brIn5g/vjD2TJHC0kAhFW jYzqRi5OTCJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZtAvegAKCRCLPIo+Aiko 1Vm3B/wJ/0cuoDCWshKIwTvNfPHBhzR0GbOXGUMhB/IwUwxTi8GSEfG6IBQXeV++iccQuMUP4H5 g5gvY7gXht9cWO/4kQuwz29pVs76HUOubsW5Mp2al5Wcp16KdfcGIMqeuOKu8LUCjL6Mde0+rYX 7mW22OkDaP3H3dWjs3b1srd1Zw6WTmwC6SpfJChgVIc+XxCDXhWL8E1RZZKawx65drhCCMGX/j/ 0BrIsW9zyGvnPfSfQFZoZ6fcmeO30dXzD9Jyg8ZKNjN1ySDT2zTPDTo0GtSFKzI0wytcixMZtrd ygP+tZIE4nUpscxhIr0AjAHh8ubBVnKAaS2rq2XPwnW7UoNf X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A The NXP PTN3222 is the single-port eUSB2 to USB2 redriver that performs translation between eUSB2 and USB2 signalling schemes. It supports all three data rates: Low Speed, Full Speed and High Speed. The reset state enables autonegotiation of the PHY role and of the data rate, so no additional programming is required. Signed-off-by: Dmitry Baryshkov Reviewed-by: Neil Armstrong Tested-by: Konrad Dybcio --- drivers/phy/Kconfig | 11 ++++ drivers/phy/Makefile | 1 + drivers/phy/phy-nxp-ptn3222.c | 119 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 131 insertions(+) diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index dfab1c66b3e5..cb06a7f79740 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -82,6 +82,17 @@ config PHY_AIROHA_PCIE This driver create the basic PHY instance and provides initialize callback for PCIe GEN3 port. +config PHY_NXP_PTN3222 + tristate "NXP PTN3222 1-port eUSB2 to USB2 redriver" + depends on I2C + depends on OF + select GENERIC_PHY + help + Enable this to support NXP PTN3222 1-port eUSB2 to USB2 Redriver. + This redriver performs translation between eUSB2 and USB2 signalling + schemes. It supports all three USB 2.0 data rates: Low Speed, Full + Speed and High Speed. + source "drivers/phy/allwinner/Kconfig" source "drivers/phy/amlogic/Kconfig" source "drivers/phy/broadcom/Kconfig" diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index 5fcbce5f9ab1..b64247046575 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_PHY_XGENE) += phy-xgene.o obj-$(CONFIG_PHY_PISTACHIO_USB) += phy-pistachio-usb.o obj-$(CONFIG_USB_LGM_PHY) += phy-lgm-usb.o obj-$(CONFIG_PHY_AIROHA_PCIE) += phy-airoha-pcie.o +obj-$(CONFIG_PHY_NXP_PTN3222) += phy-nxp-ptn3222.o obj-y += allwinner/ \ amlogic/ \ broadcom/ \ diff --git a/drivers/phy/phy-nxp-ptn3222.c b/drivers/phy/phy-nxp-ptn3222.c new file mode 100644 index 000000000000..429a91910f14 --- /dev/null +++ b/drivers/phy/phy-nxp-ptn3222.c @@ -0,0 +1,119 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2024, Linaro Limited + */ + +#include +#include +#include +#include +#include +#include +#include + +#define NUM_SUPPLIES 2 + +struct ptn3222 { + struct i2c_client *client; + struct phy *phy; + struct gpio_desc *reset_gpio; + struct regulator_bulk_data supplies[NUM_SUPPLIES]; +}; + +static int ptn3222_init(struct phy *phy) +{ + struct ptn3222 *ptn3222 = phy_get_drvdata(phy); + int ret; + + ret = regulator_bulk_enable(NUM_SUPPLIES, ptn3222->supplies); + if (ret) + return ret; + + gpiod_set_value_cansleep(ptn3222->reset_gpio, 0); + + return 0; +} + +static int ptn3222_exit(struct phy *phy) +{ + struct ptn3222 *ptn3222 = phy_get_drvdata(phy); + + gpiod_set_value_cansleep(ptn3222->reset_gpio, 1); + + return regulator_bulk_disable(NUM_SUPPLIES, ptn3222->supplies); +} + +static const struct phy_ops ptn3222_ops = { + .init = ptn3222_init, + .exit = ptn3222_exit, + .owner = THIS_MODULE, +}; + +static int ptn3222_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct phy_provider *phy_provider; + struct ptn3222 *ptn3222; + int ret; + + ptn3222 = devm_kzalloc(dev, sizeof(*ptn3222), GFP_KERNEL); + if (!ptn3222) + return -ENOMEM; + + ptn3222->client = client; + + ptn3222->reset_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(ptn3222->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(ptn3222->reset_gpio), + "unable to acquire reset gpio\n"); + + ptn3222->supplies[0].supply = "vdd3v3"; + ptn3222->supplies[0].init_load_uA = 11000; + ptn3222->supplies[1].supply = "vdd1v8"; + ptn3222->supplies[1].init_load_uA = 55000; + + ret = devm_regulator_bulk_get(dev, + NUM_SUPPLIES, + ptn3222->supplies); + if (ret) + return ret; + + ptn3222->phy = devm_phy_create(dev, dev->of_node, &ptn3222_ops); + if (IS_ERR(ptn3222->phy)) { + dev_err(dev, "failed to create PHY: %d\n", ret); + return PTR_ERR(ptn3222->phy); + } + + phy_set_drvdata(ptn3222->phy, ptn3222); + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct i2c_device_id ptn3222_table[] = { + { "ptn3222" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ptn3222_table); + +static const struct of_device_id ptn3222_of_table[] = { + { .compatible = "nxp,ptn3222" }, + { } +}; +MODULE_DEVICE_TABLE(of, ptn3222_of_table); + +static struct i2c_driver ptn3222_driver = { + .driver = { + .name = "ptn3222", + .of_match_table = ptn3222_of_table, + }, + .probe = ptn3222_probe, + .id_table = ptn3222_table, +}; + +module_i2c_driver(ptn3222_driver); + +MODULE_DESCRIPTION("NXP PTN3222 eUSB2 Redriver driver"); +MODULE_LICENSE("GPL");