The i.MX8MP glue needs to be configured based on a couple of DT properties, implement .glue_configure callback to parse those DT properties and configure the glue accordingly.
Tested-By: Tim Harvey tharvey@gateworks.com #imx8mp-venice-gw74xx Signed-off-by: Marek Vasut marex@denx.de Cc: Angus Ainslie angus@akkea.ca Cc: Bin Meng bmeng.cn@gmail.com Cc: Fabio Estevam festevam@gmail.com Cc: Kunihiko Hayashi hayashi.kunihiko@socionext.com Cc: Michal Simek michal.simek@xilinx.com Cc: Peng Fan peng.fan@nxp.com Cc: Stefano Babic sbabic@denx.de --- V2: Add TB by Tim V3: Skipped to align the Vx scheme V4: Rebase on u-boot-imx/master --- drivers/usb/dwc3/dwc3-generic.c | 52 +++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c index 7e3814207e4..6cf844cb483 100644 --- a/drivers/usb/dwc3/dwc3-generic.c +++ b/drivers/usb/dwc3/dwc3-generic.c @@ -223,6 +223,57 @@ struct dwc3_glue_ops { enum usb_dr_mode mode); };
+void dwc3_imx8mp_glue_configure(struct udevice *dev, int index, + enum usb_dr_mode mode) +{ +/* USB glue registers */ +#define USB_CTRL0 0x00 +#define USB_CTRL1 0x04 + +#define USB_CTRL0_PORTPWR_EN BIT(12) /* 1 - PPC enabled (default) */ +#define USB_CTRL0_USB3_FIXED BIT(22) /* 1 - USB3 permanent attached */ +#define USB_CTRL0_USB2_FIXED BIT(23) /* 1 - USB2 permanent attached */ + +#define USB_CTRL1_OC_POLARITY BIT(16) /* 0 - HIGH / 1 - LOW */ +#define USB_CTRL1_PWR_POLARITY BIT(17) /* 0 - HIGH / 1 - LOW */ + fdt_addr_t regs = dev_read_addr_index(dev, 1); + void *base = map_physmem(regs, 0x8, MAP_NOCACHE); + u32 value; + + value = readl(base + USB_CTRL0); + + if (dev_read_bool(dev, "fsl,permanently-attached")) + value |= (USB_CTRL0_USB2_FIXED | USB_CTRL0_USB3_FIXED); + else + value &= ~(USB_CTRL0_USB2_FIXED | USB_CTRL0_USB3_FIXED); + + if (dev_read_bool(dev, "fsl,disable-port-power-control")) + value &= ~(USB_CTRL0_PORTPWR_EN); + else + value |= USB_CTRL0_PORTPWR_EN; + + writel(value, base + USB_CTRL0); + + value = readl(base + USB_CTRL1); + if (dev_read_bool(dev, "fsl,over-current-active-low")) + value |= USB_CTRL1_OC_POLARITY; + else + value &= ~USB_CTRL1_OC_POLARITY; + + if (dev_read_bool(dev, "fsl,power-active-low")) + value |= USB_CTRL1_PWR_POLARITY; + else + value &= ~USB_CTRL1_PWR_POLARITY; + + writel(value, base + USB_CTRL1); + + unmap_physmem(base, MAP_NOCACHE); +} + +struct dwc3_glue_ops imx8mp_ops = { + .glue_configure = dwc3_imx8mp_glue_configure, +}; + void dwc3_ti_glue_configure(struct udevice *dev, int index, enum usb_dr_mode mode) { @@ -464,6 +515,7 @@ static const struct udevice_id dwc3_glue_ids[] = { { .compatible = "rockchip,rk3328-dwc3" }, { .compatible = "rockchip,rk3399-dwc3" }, { .compatible = "qcom,dwc3" }, + { .compatible = "fsl,imx8mp-dwc3", .data = (ulong)&imx8mp_ops }, { .compatible = "fsl,imx8mq-dwc3" }, { .compatible = "intel,tangier-dwc3" }, { }