Unlike the other 64-bit mvebu SoCs the AlleyCat5 uses the older ehci block from the 32-bit SoCs. Adapt the ehci-marvell.c driver to cope with the fact that the ac5 does not have the mbus infrastructure the 32-bit SoCs have and ensure USB_EHCI_IS_TDI is selected.
Signed-off-by: Chris Packham judge.packham@gmail.com Reviewed-by: Stefan Roese sr@denx.de ---
Changes in v5: - Minor white space cleanups - Collect review from Stefan
drivers/usb/host/Kconfig | 1 + drivers/usb/host/ehci-marvell.c | 53 ++++++++++++++++++++++++++++----- 2 files changed, 46 insertions(+), 8 deletions(-)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index a0f48f09a7..628078f495 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -178,6 +178,7 @@ config USB_EHCI_MARVELL depends on ARCH_MVEBU || ARCH_KIRKWOOD || ARCH_ORION5X default y select USB_EHCI_IS_TDI if !ARM64 + select USB_EHCI_IS_TDI if ALLEYCAT_5 ---help--- Enables support for the on-chip EHCI controller on MVEBU SoCs.
diff --git a/drivers/usb/host/ehci-marvell.c b/drivers/usb/host/ehci-marvell.c index b7e60c690a..6093c8fb0b 100644 --- a/drivers/usb/host/ehci-marvell.c +++ b/drivers/usb/host/ehci-marvell.c @@ -48,12 +48,17 @@ struct ehci_mvebu_priv { fdt_addr_t hcd_base; };
+#define USB_TO_DRAM_TARGET_ID 0x2 +#define USB_TO_DRAM_ATTR_ID 0x0 +#define USB_DRAM_BASE 0x00000000 +#define USB_DRAM_SIZE 0xfff /* don't overrun u-boot source (was 0xffff) */ + /* * Once all the older Marvell SoC's (Orion, Kirkwood) are converted * 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(void *base) +static void usb_brg_adrdec_setup(struct udevice *dev, void *base) { const struct mbus_dram_target_info *dram; int i; @@ -65,16 +70,34 @@ static void usb_brg_adrdec_setup(void *base) writel(0, base + USB_WINDOW_BASE(i)); }
- for (i = 0; i < dram->num_cs; i++) { - const struct mbus_dram_window *cs = dram->cs + i; + if (device_is_compatible(dev, "marvell,ac5-ehci")) { + /* + * use decoding window to map dram address seen by usb to 0x0 + */
/* Write size, attributes and target id to control register */ - writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) | - (dram->mbus_dram_target_id << 4) | 1, - base + USB_WINDOW_CTRL(i)); + writel((USB_DRAM_SIZE << 16) | (USB_TO_DRAM_ATTR_ID << 8) | + (USB_TO_DRAM_TARGET_ID << 4) | 1, + base + USB_WINDOW_CTRL(0));
/* Write base address to base register */ - writel(cs->base, base + USB_WINDOW_BASE(i)); + writel(USB_DRAM_BASE, base + USB_WINDOW_BASE(0)); + + debug("## AC5 decoding windows, ctrl[%p]=0x%x, base[%p]=0x%x\n", + base + USB_WINDOW_CTRL(0), readl(base + USB_WINDOW_CTRL(0)), + base + USB_WINDOW_BASE(0), readl(base + USB_WINDOW_BASE(0))); + } else { + for (i = 0; i < dram->num_cs; i++) { + const struct mbus_dram_window *cs = dram->cs + i; + + /* Write size, attributes and target id to control register */ + writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) | + (dram->mbus_dram_target_id << 4) | 1, + base + USB_WINDOW_CTRL(i)); + + /* Write base address to base register */ + writel(cs->base, base + USB_WINDOW_BASE(i)); + } } }
@@ -126,7 +149,7 @@ static int ehci_mvebu_probe(struct udevice *dev) if (device_is_compatible(dev, "marvell,armada-3700-ehci")) marvell_ehci_ops.powerup_fixup = marvell_ehci_powerup_fixup; else - usb_brg_adrdec_setup((void *)priv->hcd_base); + usb_brg_adrdec_setup(dev, (void *)priv->hcd_base);
hccr = (struct ehci_hccr *)(priv->hcd_base + 0x100); hcor = (struct ehci_hcor *) @@ -136,6 +159,19 @@ static int ehci_mvebu_probe(struct udevice *dev) (uintptr_t)hccr, (uintptr_t)hcor, (uintptr_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
+#define PHY_CALIB_OFFSET 0x808 + /* + * Trigger calibration during each usb start/reset: + * BIT 13 to 0, and then to 1 + */ + if (device_is_compatible(dev, "marvell,ac5-ehci")) { + void *phy_calib_reg = (void *)(priv->hcd_base + PHY_CALIB_OFFSET); + u32 val = readl(phy_calib_reg) & (~BIT(13)); + + writel(val, phy_calib_reg); + writel(val | BIT(13), phy_calib_reg); + } + return ehci_register(dev, hccr, hcor, &marvell_ehci_ops, 0, USB_INIT_HOST); } @@ -143,6 +179,7 @@ static int ehci_mvebu_probe(struct udevice *dev) static const struct udevice_id ehci_usb_ids[] = { { .compatible = "marvell,orion-ehci", }, { .compatible = "marvell,armada-3700-ehci", }, + { .compatible = "marvell,ac5-ehci", }, { } };