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@@ -5,13 +5,15 @@
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*/
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#include <common.h>
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+#include <clk.h>
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#include <cpu_func.h>
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#include <dm.h>
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#include <errno.h>
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-#include <usb.h>
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+#include <generic-phy.h>
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#include <malloc.h>
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#include <memalign.h>
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#include <phys2bus.h>
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+#include <usb.h>
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#include <usbroothubdes.h>
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#include <wait_bit.h>
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#include <asm/io.h>
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@@ -37,6 +39,8 @@ struct dwc2_priv {
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#ifdef CONFIG_DM_REGULATOR
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struct udevice *vbus_supply;
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#endif
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+ struct phy phy;
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+ struct clk_bulk clks;
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#else
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uint8_t *aligned_buffer;
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uint8_t *status_buffer;
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@@ -1147,6 +1151,8 @@ static int dwc2_reset(struct udevice *dev)
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return ret;
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}
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+ /* force reset to clear all IP register */
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+ reset_assert_bulk(&priv->resets);
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ret = reset_deassert_bulk(&priv->resets);
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if (ret) {
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reset_release_bulk(&priv->resets);
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@@ -1213,6 +1219,8 @@ static int dwc2_init_common(struct udevice *dev, struct dwc2_priv *priv)
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if (readl(®s->gintsts) & DWC2_GINTSTS_CURMODE_HOST)
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mdelay(1000);
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+ printf("USB DWC2\n");
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+
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return 0;
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}
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@@ -1322,13 +1330,95 @@ static int dwc2_usb_ofdata_to_platdata(struct udevice *dev)
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return 0;
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}
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+static int dwc2_setup_phy(struct udevice *dev)
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+{
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+ struct dwc2_priv *priv = dev_get_priv(dev);
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+ int ret;
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+
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+ ret = generic_phy_get_by_index(dev, 0, &priv->phy);
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+ if (ret) {
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+ if (ret == -ENOENT)
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+ return 0; /* no PHY, nothing to do */
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+ dev_err(dev, "Failed to get USB PHY: %d.\n", ret);
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+ return ret;
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+ }
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+
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+ ret = generic_phy_init(&priv->phy);
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+ if (ret) {
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+ dev_dbg(dev, "Failed to init USB PHY: %d.\n", ret);
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+ return ret;
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+ }
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+
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+ ret = generic_phy_power_on(&priv->phy);
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+ if (ret) {
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+ dev_dbg(dev, "Failed to power on USB PHY: %d.\n", ret);
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+ generic_phy_exit(&priv->phy);
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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+static int dwc2_shutdown_phy(struct udevice *dev)
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+{
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+ struct dwc2_priv *priv = dev_get_priv(dev);
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+ int ret;
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+
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+ /* PHY is not valid when generic_phy_get_by_index() = -ENOENT */
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+ if (!generic_phy_valid(&priv->phy))
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+ return 0; /* no PHY, nothing to do */
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+
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+ ret = generic_phy_power_off(&priv->phy);
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+ if (ret) {
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+ dev_dbg(dev, "Failed to power off USB PHY: %d.\n", ret);
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+ return ret;
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+ }
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+
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+ ret = generic_phy_exit(&priv->phy);
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+ if (ret) {
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+ dev_dbg(dev, "Failed to power off USB PHY: %d.\n", ret);
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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+static int dwc2_clk_init(struct udevice *dev)
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+{
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+ struct dwc2_priv *priv = dev_get_priv(dev);
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+ int ret;
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+
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+ ret = clk_get_bulk(dev, &priv->clks);
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+ if (ret == -ENOSYS || ret == -ENOENT)
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+ return 0;
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+ if (ret)
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+ return ret;
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+
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+ ret = clk_enable_bulk(&priv->clks);
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+ if (ret) {
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+ clk_release_bulk(&priv->clks);
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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static int dwc2_usb_probe(struct udevice *dev)
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{
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struct dwc2_priv *priv = dev_get_priv(dev);
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struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev);
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+ int ret;
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bus_priv->desc_before_addr = true;
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+ ret = dwc2_clk_init(dev);
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+ if (ret)
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+ return ret;
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+
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+ ret = dwc2_setup_phy(dev);
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+ if (ret)
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+ return ret;
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+
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return dwc2_init_common(dev, priv);
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}
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@@ -1341,9 +1431,17 @@ static int dwc2_usb_remove(struct udevice *dev)
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if (ret)
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return ret;
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+ ret = dwc2_shutdown_phy(dev);
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+ if (ret) {
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+ dev_dbg(dev, "Failed to shutdown USB PHY: %d.\n", ret);
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+ return ret;
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+ }
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+
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dwc2_uninit_common(priv->regs);
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reset_release_bulk(&priv->resets);
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+ clk_disable_bulk(&priv->clks);
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+ clk_release_bulk(&priv->clks);
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return 0;
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}
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