usb: dwc3: keystone: Add support for ti,am654-dwc3

The AM654 SoC contains a DWC3 controller with TI specific
wrapper. Add support for that.

Unlike the Keystone 2 case, for AM654 We don't need to
process any IRQs for basic USB operation.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index 1a0404fda596b0699866c4729200e76ef0c9226f..34d9ce20532c7b310d70744f2df88ee6fbdee7e4 100644 (file)
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -86,11 +86,11 @@ config USB_DWC3_HAPS
          platform, please say 'Y' or 'M' here.
 
 config USB_DWC3_KEYSTONE
-       tristate "Texas Instruments Keystone2 Platforms"
-       depends on ARCH_KEYSTONE || COMPILE_TEST
+       tristate "Texas Instruments Keystone2/AM654 Platforms"
+       depends on ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
        default USB_DWC3
        help
-         Support of USB2/3 functionality in TI Keystone2 platforms.
+         Support of USB2/3 functionality in TI Keystone2 and AM654 platforms.
          Say 'Y' or 'M' here if you have one such device
 
 config USB_DWC3_OF_SIMPLE

diff --git a/drivers/usb/dwc3/dwc3-keystone.c b/drivers/usb/dwc3/dwc3-keystone.c
index 193a9a88222afdbc2ad210b0ddbc96a4a87f39aa..cbee5fb9b9fb02d2e40e795d6e4276f0cdeaba6d 100644 (file)
--- a/drivers/usb/dwc3/dwc3-keystone.c
+++ b/drivers/usb/dwc3/dwc3-keystone.c
@@ -106,6 +106,10 @@ static int kdwc3_probe(struct platform_device *pdev)
                goto err_irq;
        }
 
+       /* IRQ processing not required currently for AM65 */
+       if (of_device_is_compatible(node, "ti,am654-dwc3"))
+               goto skip_irq;
+
        irq = platform_get_irq(pdev, 0);
        if (irq < 0) {
                dev_err(&pdev->dev, "missing irq\n");
@@ -123,6 +127,7 @@ static int kdwc3_probe(struct platform_device *pdev)
 
        kdwc3_enable_irqs(kdwc);
 
+skip_irq:
        error = of_platform_populate(node, NULL, NULL, dev);
        if (error) {
                dev_err(&pdev->dev, "failed to create dwc3 core\n");
@@ -152,8 +157,11 @@ static int kdwc3_remove_core(struct device *dev, void *c)
 static int kdwc3_remove(struct platform_device *pdev)
 {
        struct dwc3_keystone *kdwc = platform_get_drvdata(pdev);
+       struct device_node *node = pdev->dev.of_node;
+
+       if (!of_device_is_compatible(node, "ti,am654-dwc3"))
+               kdwc3_disable_irqs(kdwc);
 
-       kdwc3_disable_irqs(kdwc);
        device_for_each_child(&pdev->dev, NULL, kdwc3_remove_core);
        pm_runtime_put_sync(kdwc->dev);
        pm_runtime_disable(kdwc->dev);
@@ -165,6 +173,7 @@ static int kdwc3_remove(struct platform_device *pdev)
 
 static const struct of_device_id kdwc3_of_match[] = {
        { .compatible = "ti,keystone-dwc3", },
+       { .compatible = "ti,am654-dwc3" },
        {},
 };
 MODULE_DEVICE_TABLE(of, kdwc3_of_match);