diff options
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/usb/host/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-marvell.c | 59 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-tegra.c | 13 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-mvebu.c | 97 |
5 files changed, 170 insertions, 9 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 61e13d7..b9c5fbe 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -21,6 +21,15 @@ config USB_XHCI_DWC3 Say Y or if your system has a Dual Role SuperSpeed USB controller based on the DesignWare USB3 IP Core. +config USB_XHCI_MVEBU + bool "MVEBU USB 3.0 support" + default y + depends on ARCH_MVEBU + help + Choose this option to add support for USB 3.0 driver on mvebu + SoCs, which includes Armada8K, Armada3700 and other Armada + family SoCs. + config USB_XHCI_ROCKCHIP bool "Support for Rockchip on-chip xHCI USB controller" depends on ARCH_ROCKCHIP diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index de25328..58c0cf5 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -61,6 +61,7 @@ obj-$(CONFIG_USB_XHCI_ZYNQMP) += xhci-zynqmp.o obj-$(CONFIG_USB_XHCI_KEYSTONE) += xhci-keystone.o obj-$(CONFIG_USB_XHCI_EXYNOS) += xhci-exynos5.o obj-$(CONFIG_USB_XHCI_FSL) += xhci-fsl.o +obj-$(CONFIG_USB_XHCI_MVEBU) += xhci-mvebu.o obj-$(CONFIG_USB_XHCI_OMAP) += xhci-omap.o obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o diff --git a/drivers/usb/host/ehci-marvell.c b/drivers/usb/host/ehci-marvell.c index 253fcb3..4642470 100644 --- a/drivers/usb/host/ehci-marvell.c +++ b/drivers/usb/host/ehci-marvell.c @@ -26,6 +26,16 @@ DECLARE_GLOBAL_DATA_PTR; #define USB_WINDOW_BASE(i) (0x324 + ((i) << 4)) #define USB_TARGET_DRAM 0x0 +#define USB2_SBUSCFG_OFF 0x90 + +#define USB_SBUSCFG_BAWR_OFF 0x6 +#define USB_SBUSCFG_BARD_OFF 0x3 +#define USB_SBUSCFG_AHBBRST_OFF 0x0 + +#define USB_SBUSCFG_BAWR_ALIGN_64B 0x4 +#define USB_SBUSCFG_BARD_ALIGN_64B 0x4 +#define USB_SBUSCFG_AHBBRST_INCR16 0x7 + /* * USB 2.0 Bridge Address Decoding registers setup */ @@ -41,7 +51,7 @@ struct ehci_mvebu_priv { * to the common mvebu archticture including the mbus setup, this * will be the only function needed to configure the access windows */ -static void usb_brg_adrdec_setup(u32 base) +static void usb_brg_adrdec_setup(void *base) { const struct mbus_dram_target_info *dram; int i; @@ -66,6 +76,29 @@ static void usb_brg_adrdec_setup(u32 base) } } +static void marvell_ehci_powerup_fixup(struct ehci_ctrl *ctrl, + uint32_t *status_reg, uint32_t *reg) +{ + struct ehci_mvebu_priv *priv = ctrl->priv; + + /* + * Set default value for reg SBUSCFG, which is Control for the AMBA + * system bus interface: + * BAWR = BARD = 4 : Align rd/wr bursts packets larger than 64 bytes + * AHBBRST = 7 : Align AHB burst for packets larger than 64 bytes + */ + writel((USB_SBUSCFG_BAWR_ALIGN_64B << USB_SBUSCFG_BAWR_OFF) | + (USB_SBUSCFG_BARD_ALIGN_64B << USB_SBUSCFG_BARD_OFF) | + (USB_SBUSCFG_AHBBRST_INCR16 << USB_SBUSCFG_AHBBRST_OFF), + priv->hcd_base + USB2_SBUSCFG_OFF); + + mdelay(50); +} + +static struct ehci_ops marvell_ehci_ops = { + .powerup_fixup = NULL, +}; + static int ehci_mvebu_probe(struct udevice *dev) { struct ehci_mvebu_priv *priv = dev_get_priv(dev); @@ -81,21 +114,33 @@ static int ehci_mvebu_probe(struct udevice *dev) return -ENXIO; } - usb_brg_adrdec_setup(priv->hcd_base); + /* + * For SoCs without hlock like Armada3700 we need to program the sbuscfg + * reg to guarantee AHB master's burst will not overrun or underrun + * the FIFO. Otherwise all USB2 write option will fail. + * Also, the address decoder doesn't need to get setup with this + * SoC, so don't call usb_brg_adrdec_setup(). + */ + if (of_device_is_compatible(dev, "marvell,armada3700-ehci")) + marvell_ehci_ops.powerup_fixup = marvell_ehci_powerup_fixup; + else + usb_brg_adrdec_setup((void *)priv->hcd_base); hccr = (struct ehci_hccr *)(priv->hcd_base + 0x100); hcor = (struct ehci_hcor *) - ((u32)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase))); + ((uintptr_t)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase))); - debug("ehci-marvell: init hccr %x and hcor %x hc_length %d\n", - (u32)hccr, (u32)hcor, - (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase))); + debug("ehci-marvell: init hccr %lx and hcor %lx hc_length %ld\n", + (uintptr_t)hccr, (uintptr_t)hcor, + (uintptr_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase))); - return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST); + return ehci_register(dev, hccr, hcor, &marvell_ehci_ops, 0, + USB_INIT_HOST); } static const struct udevice_id ehci_usb_ids[] = { { .compatible = "marvell,orion-ehci", }, + { .compatible = "marvell,armada3700-ehci", }, { } }; diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index eb54df4..e3620da 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -600,9 +600,18 @@ static int init_ulpi_usb_controller(struct fdt_usb *config, /* reset ULPI phy */ if (dm_gpio_is_valid(&config->phy_reset_gpio)) { - dm_gpio_set_value(&config->phy_reset_gpio, 0); - mdelay(5); + /* + * This GPIO is typically active-low, and marked as such in + * device tree. dm_gpio_set_value() takes this into account + * and inverts the value we pass here if required. In other + * words, this first call logically asserts the reset signal, + * which typically results in driving the physical GPIO low, + * and the second call logically de-asserts the reset signal, + * which typically results in driver the GPIO high. + */ dm_gpio_set_value(&config->phy_reset_gpio, 1); + mdelay(5); + dm_gpio_set_value(&config->phy_reset_gpio, 0); } /* Reset the usb controller */ diff --git a/drivers/usb/host/xhci-mvebu.c b/drivers/usb/host/xhci-mvebu.c new file mode 100644 index 0000000..23c241a --- /dev/null +++ b/drivers/usb/host/xhci-mvebu.c @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2015 Marvell International Ltd. + * + * MVEBU USB HOST xHCI Controller + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <fdtdec.h> +#include <usb.h> +#include <asm/gpio.h> + +#include "xhci.h" + +DECLARE_GLOBAL_DATA_PTR; + +struct mvebu_xhci_platdata { + fdt_addr_t hcd_base; +}; + +/** + * Contains pointers to register base addresses + * for the usb controller. + */ +struct mvebu_xhci { + struct xhci_ctrl ctrl; /* Needs to come first in this struct! */ + struct usb_platdata usb_plat; + struct xhci_hccr *hcd; +}; + +/* + * Dummy implementation that can be overwritten by a board + * specific function + */ +__weak int board_xhci_enable(void) +{ + return 0; +} + +static int xhci_usb_probe(struct udevice *dev) +{ + struct mvebu_xhci_platdata *plat = dev_get_platdata(dev); + struct mvebu_xhci *ctx = dev_get_priv(dev); + struct xhci_hcor *hcor; + int len; + + ctx->hcd = (struct xhci_hccr *)plat->hcd_base; + len = HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase)); + hcor = (struct xhci_hcor *)((uintptr_t)ctx->hcd + len); + + /* Enable USB xHCI (VBUS, reset etc) in board specific code */ + board_xhci_enable(); + + return xhci_register(dev, ctx->hcd, hcor); +} + +static int xhci_usb_remove(struct udevice *dev) +{ + return xhci_deregister(dev); +} + +static int xhci_usb_ofdata_to_platdata(struct udevice *dev) +{ + struct mvebu_xhci_platdata *plat = dev_get_platdata(dev); + + /* + * Get the base address for XHCI controller from the device node + */ + plat->hcd_base = dev_get_addr(dev); + if (plat->hcd_base == FDT_ADDR_T_NONE) { + debug("Can't get the XHCI register base address\n"); + return -ENXIO; + } + + return 0; +} + +static const struct udevice_id xhci_usb_ids[] = { + { .compatible = "marvell,armada3700-xhci" }, + { .compatible = "marvell,armada-8k-xhci" }, + { } +}; + +U_BOOT_DRIVER(usb_xhci) = { + .name = "xhci_mvebu", + .id = UCLASS_USB, + .of_match = xhci_usb_ids, + .ofdata_to_platdata = xhci_usb_ofdata_to_platdata, + .probe = xhci_usb_probe, + .remove = xhci_usb_remove, + .ops = &xhci_usb_ops, + .platdata_auto_alloc_size = sizeof(struct mvebu_xhci_platdata), + .priv_auto_alloc_size = sizeof(struct mvebu_xhci), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; |