Usb2244 driver needs to be reset to bring usb2244 out of reset. This driver will reset the controller using gpio.
Signed-off-by: T Karthik Reddy t.karthik.reddy@xilinx.com Signed-off-by: Venkatesh Yadav Abbarapu venkatesh.abbarapu@amd.com --- MAINTAINERS | 1 + drivers/misc/Kconfig | 8 +++++ drivers/misc/Makefile | 1 + drivers/misc/usb2244.c | 69 ++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 79 insertions(+) create mode 100644 drivers/misc/usb2244.c
diff --git a/MAINTAINERS b/MAINTAINERS index 1e950c3b45..be50fddc38 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -815,6 +815,7 @@ F: drivers/i2c/i2c-cdns.c F: drivers/i2c/muxes/pca954x.c F: drivers/i2c/zynq_i2c.c F: drivers/mailbox/zynqmp-ipi.c +F: drivers/misc/usb2244.c F: drivers/misc/usb5744.c F: drivers/mmc/zynq_sdhci.c F: drivers/mtd/nand/raw/zynq_nand.c diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index b7022c31ee..3b6ca7d4bc 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -696,4 +696,12 @@ config USB5744 This enables support for Microchip USB5744 Hub. This driver reset the hub using gpio pin and configure hub via i2c.
+config USB2244 + bool "Microchip USB2244 Ultra Fast USB 2.0 SD driver" + depends on DM_USB && DM_GPIO + help + This option enables support for Microchip USB2244 Ultra Fast USB 2.0 + SD controller. This driver will reset the usb2244 controller using a + gpio pin. + endmenu diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 19f5afa885..82b7b92c0a 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -91,3 +91,4 @@ obj-$(CONFIG_ESM_K3) += k3_esm.o obj-$(CONFIG_ESM_PMIC) += esm_pmic.o obj-$(CONFIG_SL28CPLD) += sl28cpld.o obj-$(CONFIG_USB5744) += usb5744.o +obj-$(CONFIG_USB2244) += usb2244.o diff --git a/drivers/misc/usb2244.c b/drivers/misc/usb2244.c new file mode 100644 index 0000000000..19dcd1eef6 --- /dev/null +++ b/drivers/misc/usb2244.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for the Microchip USB2244 Ultra Fast USB 2.0 SD controller. + * + * Copyright (C) 2024,Advanced Micro Devices, Inc. + */ + +#include <common.h> +#include <dm.h> +#include <usb.h> +#include <asm/gpio.h> +#include <linux/delay.h> + +struct usb2244_priv { + struct gpio_desc reset_gpio; +}; + +static int usb2244_probe(struct udevice *dev) +{ + struct usb2244_priv *priv = dev_get_priv(dev); + int ret; + + ret = dm_gpio_set_value(&priv->reset_gpio, 1); + if (ret) + return ret; + + mdelay(5); + + ret = dm_gpio_set_value(&priv->reset_gpio, 0); + if (ret) + return ret; + + mdelay(5); + + return 0; +} + +static int usb2244_plat(struct udevice *dev) +{ + struct usb2244_priv *priv = dev_get_priv(dev); + int ret; + + ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset_gpio, + GPIOD_IS_OUT | GPIOD_ACTIVE_LOW); + if (ret) { + printf("%s, gpio request failed err: %d\n", __func__, ret); + return ret; + } + + return 0; +} + +U_BOOT_DRIVER(usb2244) = { + .name = "usb2244", + .id = UCLASS_MISC, + .probe = usb2244_probe, + .of_to_plat = usb2244_plat, + .priv_auto = sizeof(struct usb2244_priv), +}; + +static const struct usb_device_id usb2244_id_table[] = { + { + .idVendor = 0x0424, + .idProduct = 0x2240 + }, + { } +}; + +U_BOOT_USB_DEVICE(usb2244, usb2244_id_table);