diff options
Diffstat (limited to 'board/st/stm32mp1/stm32mp1.c')
| -rw-r--r-- | board/st/stm32mp1/stm32mp1.c | 185 |
1 files changed, 49 insertions, 136 deletions
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c index 24d299ac33..76917b022e 100644 --- a/board/st/stm32mp1/stm32mp1.c +++ b/board/st/stm32mp1/stm32mp1.c @@ -7,7 +7,9 @@ #include <config.h> #include <clk.h> #include <dm.h> +#include <g_dnl.h> #include <generic-phy.h> +#include <i2c.h> #include <led.h> #include <misc.h> #include <phy.h> @@ -58,11 +60,6 @@ */ DECLARE_GLOBAL_DATA_PTR; -#define STM32MP_GUSBCFG 0x40002407 - -#define STM32MP_GGPIO 0x38 -#define STM32MP_GGPIO_VBUS_SENSING BIT(21) - #define USB_WARNING_LOW_THRESHOLD_UV 660000 #define USB_START_LOW_THRESHOLD_UV 1230000 #define USB_START_HIGH_THRESHOLD_UV 2100000 @@ -155,149 +152,75 @@ static void board_key_check(void) #endif } -static struct dwc2_plat_otg_data stm32mp_otg_data = { - .usb_gusbcfg = STM32MP_GUSBCFG, -}; +#if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG) -static struct reset_ctl usbotg_reset; +/* STMicroelectronics STUSB1600 Type-C controller */ +#define STUSB1600_CC_CONNECTION_STATUS 0x0E -int board_usb_init(int index, enum usb_init_type init) +/* STUSB1600_CC_CONNECTION_STATUS bitfields */ +#define STUSB1600_CC_ATTACH BIT(0) + +static int stusb1600_init(struct udevice **dev_stusb1600) { - struct fdtdec_phandle_args args; - struct udevice *dev; - const void *blob = gd->fdt_blob; - struct clk clk; - struct phy phy; - int node; - int phy_provider; + ofnode node; + struct udevice *dev, *bus; int ret; + u32 chip_addr; - /* find the usb otg node */ - node = fdt_node_offset_by_compatible(blob, -1, "snps,dwc2"); - if (node < 0) { - debug("Not found usb_otg device\n"); - return -ENODEV; - } + *dev_stusb1600 = NULL; - if (!fdtdec_get_is_enabled(blob, node)) { - debug("stm32 usbotg is disabled in the device tree\n"); + /* if node stusb1600 is present, means DK1 or DK2 board */ + node = ofnode_by_compatible(ofnode_null(), "st,stusb1600"); + if (!ofnode_valid(node)) return -ENODEV; - } - - /* Enable clock */ - ret = fdtdec_parse_phandle_with_args(blob, node, "clocks", - "#clock-cells", 0, 0, &args); - if (ret) { - debug("usbotg has no clocks defined in the device tree\n"); - return ret; - } - ret = uclass_get_device_by_of_offset(UCLASS_CLK, args.node, &dev); + ret = ofnode_read_u32(node, "reg", &chip_addr); if (ret) - return ret; + return -EINVAL; - if (args.args_count != 1) { - debug("Can't find clock ID in the device tree\n"); - return -ENODATA; - } - - clk.dev = dev; - clk.id = args.args[0]; - - ret = clk_enable(&clk); - if (ret) { - debug("Failed to enable usbotg clock\n"); - return ret; - } - - /* Reset */ - ret = fdtdec_parse_phandle_with_args(blob, node, "resets", - "#reset-cells", 0, 0, &args); + ret = uclass_get_device_by_ofnode(UCLASS_I2C, ofnode_get_parent(node), + &bus); if (ret) { - debug("usbotg has no resets defined in the device tree\n"); - goto clk_err; + printf("bus for stusb1600 not found\n"); + return -ENODEV; } - ret = uclass_get_device_by_of_offset(UCLASS_RESET, args.node, &dev); - if (ret || args.args_count != 1) - goto clk_err; - - usbotg_reset.dev = dev; - usbotg_reset.id = args.args[0]; - - reset_assert(&usbotg_reset); - udelay(2); - reset_deassert(&usbotg_reset); - - /* Get USB PHY */ - ret = fdtdec_parse_phandle_with_args(blob, node, "phys", - "#phy-cells", 0, 0, &args); - if (!ret) { - phy_provider = fdt_parent_offset(blob, args.node); - ret = uclass_get_device_by_of_offset(UCLASS_PHY, - phy_provider, &dev); - if (ret) - goto clk_err; - - phy.dev = dev; - phy.id = fdtdec_get_uint(blob, args.node, "reg", -1); - - ret = generic_phy_power_on(&phy); - if (ret) { - debug("unable to power on the phy\n"); - goto clk_err; - } + ret = dm_i2c_probe(bus, chip_addr, 0, &dev); + if (!ret) + *dev_stusb1600 = dev; - ret = generic_phy_init(&phy); - if (ret) { - debug("failed to init usb phy\n"); - goto phy_power_err; - } - } + return ret; +} - /* Parse and store data needed for gadget */ - stm32mp_otg_data.regs_otg = fdtdec_get_addr(blob, node, "reg"); - if (stm32mp_otg_data.regs_otg == FDT_ADDR_T_NONE) { - debug("usbotg: can't get base address\n"); - ret = -ENODATA; - goto phy_init_err; - } +static int stusb1600_cable_connected(struct udevice *dev) +{ + u8 status; - stm32mp_otg_data.rx_fifo_sz = fdtdec_get_int(blob, node, - "g-rx-fifo-size", 0); - stm32mp_otg_data.np_tx_fifo_sz = fdtdec_get_int(blob, node, - "g-np-tx-fifo-size", 0); - stm32mp_otg_data.tx_fifo_sz = fdtdec_get_int(blob, node, - "g-tx-fifo-size", 0); - /* Enable voltage level detector */ - if (!(fdtdec_parse_phandle_with_args(blob, node, "usb33d-supply", - NULL, 0, 0, &args))) { - if (!uclass_get_device_by_of_offset(UCLASS_REGULATOR, - args.node, &dev)) { - ret = regulator_set_enable(dev, true); - if (ret) { - debug("Failed to enable usb33d\n"); - goto phy_init_err; - } - } - } - /* Enable vbus sensing */ - setbits_le32(stm32mp_otg_data.regs_otg + STM32MP_GGPIO, - STM32MP_GGPIO_VBUS_SENSING); + if (dm_i2c_read(dev, STUSB1600_CC_CONNECTION_STATUS, &status, 1)) + return 0; - return dwc2_udc_probe(&stm32mp_otg_data); + return status & STUSB1600_CC_ATTACH; +} -phy_init_err: - generic_phy_exit(&phy); +#include <usb/dwc2_udc.h> +int g_dnl_board_usb_cable_connected(void) +{ + struct udevice *stusb1600; + struct udevice *dwc2_udc_otg; + int ret; -phy_power_err: - generic_phy_power_off(&phy); + if (!stusb1600_init(&stusb1600)) + return stusb1600_cable_connected(stusb1600); -clk_err: - clk_disable(&clk); + ret = uclass_get_device_by_driver(UCLASS_USB_GADGET_GENERIC, + DM_GET_DRIVER(dwc2_udc_otg), + &dwc2_udc_otg); + if (!ret) + debug("dwc2_udc_otg init failed\n"); - return ret; + return dwc2_udc_B_session_valid(dwc2_udc_otg); } +#endif /* CONFIG_USB_GADGET */ static int get_led(struct udevice **dev, char *led_string) { @@ -438,16 +361,6 @@ static int board_check_usb_power(void) return 0; } -int board_usb_cleanup(int index, enum usb_init_type init) -{ - /* Reset usbotg */ - reset_assert(&usbotg_reset); - udelay(2); - reset_deassert(&usbotg_reset); - - return 0; -} - static void sysconf_init(void) { #ifndef CONFIG_STM32MP1_TRUSTED |