This is entrypoint for USB stack initialization. Function board_usb_init will be called from cmd/fastboot.c code.
Signed-off-by: Alexey Romanov avromanov@salutedevices.com --- arch/arm/mach-meson/board-a1.c | 89 ++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+)
diff --git a/arch/arm/mach-meson/board-a1.c b/arch/arm/mach-meson/board-a1.c index 967bb67182..781d5cfb33 100644 --- a/arch/arm/mach-meson/board-a1.c +++ b/arch/arm/mach-meson/board-a1.c @@ -4,12 +4,17 @@ */
#include <common.h> +#include <dm.h> +#include <usb.h> #include <asm/arch/a1.h> #include <asm/arch/boot.h> #include <asm/armv8/mmu.h> #include <asm/io.h> #include <linux/compiler.h> #include <linux/sizes.h> +#include <linux/usb/otg.h> +#include <asm/arch/usb.h> +#include <usb/dwc2_udc.h>
phys_size_t get_effective_memsize(void) { @@ -57,3 +62,87 @@ static struct mm_region a1_mem_map[] = { };
struct mm_region *mem_map = a1_mem_map; + +#if CONFIG_IS_ENABLED(USB_DWC3_MESON_G12A) && \ + CONFIG_IS_ENABLED(USB_GADGET_DWC2_OTG) + +static struct dwc2_plat_otg_data meson_a1_dwc2_data; + +int board_usb_init(int index, enum usb_init_type init) +{ + int node, dwc2_node; + const void *blob = gd->fdt_blob; + struct udevice *dev; + int ret; + + node = fdt_node_offset_by_compatible(blob, -1, + "amlogic,meson-a1-usb-ctrl"); + if (node < 0) { + pr_err("not found usb-control node\n"); + return -ENODEV; + } + + if (!fdtdec_get_is_enabled(blob, node)) { + pr_err("usb is disabled in the device tree\n"); + return -ENODEV; + } + + ret = uclass_get_device_by_of_offset(UCLASS_SIMPLE_BUS, node, &dev); + if (ret) { + pr_err("not found usb-control device\n"); + return ret; + } + + dwc2_node = fdt_node_offset_by_compatible(blob, node, + "amlogic,meson-a1-usb"); + if (dwc2_node < 0) { + pr_err("not found dwc2 node\n"); + return -ENODEV; + } + + if (!fdtdec_get_is_enabled(blob, dwc2_node)) { + pr_err("dwc2 is disabled in the device tree\n"); + return -ENODEV; + } + + meson_a1_dwc2_data.regs_otg = fdtdec_get_addr(blob, dwc2_node, "reg"); + if (meson_a1_dwc2_data.regs_otg == FDT_ADDR_T_NONE) { + pr_err("can't get base address\n"); + return -ENODATA; + } + + meson_a1_dwc2_data.rx_fifo_sz = fdtdec_get_int(blob, dwc2_node, + "g-rx-fifo-size", 0); + if (meson_a1_dwc2_data.rx_fifo_sz < 0) { + pr_err("failed to get g-rx-fifo-size value\n"); + return -ENODATA; + } + + meson_a1_dwc2_data.np_tx_fifo_sz = fdtdec_get_int(blob, dwc2_node, + "g-np-tx-fifo-size", 0); + if (meson_a1_dwc2_data.np_tx_fifo_sz < 0) { + pr_err("failed to get g-np-tx-fifo-size value\n"); + return -ENODATA; + } + + meson_a1_dwc2_data.tx_fifo_sz = fdtdec_get_int(blob, dwc2_node, + "g-tx-fifo-size", 0); + if (meson_a1_dwc2_data.tx_fifo_sz < 0) { + pr_err("failed to get g-tx-fifo-size value\n"); + return -ENODATA; + } + + ret = dwc3_meson_g12a_force_mode(dev, USB_DR_MODE_PERIPHERAL); + if (ret) { + pr_err("failed to force usb mode to peripheral\n"); + return ret; + } + + return dwc2_udc_probe(&meson_a1_dwc2_data); +} + +int board_usb_cleanup(int index, enum usb_init_type init) +{ + return 0; +} +#endif