usb: dwc3: exynos: add support for exynos7870

Exynos7870 devices have a DWC3 compatible USB 2.0 controller.
Add support in the driver by:
 - Adding its own compatible string, "samsung,exynos7870-dwusb3".
 - Adding three USBDRD clocks named "bus_early", "ref", and "ctrl", to
   be controlled by the driver.

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250301-exynos7870-usb-v3-2-f01697165d19@disroot.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index f5d963fae9e069e1bd145ff5bd1b704da89fb74c..de686b9e64046be12e52c87d80282558ac5b5f52 100644 (file)
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -163,6 +163,12 @@ static const struct dwc3_exynos_driverdata exynos7_drvdata = {
        .suspend_clk_idx = 1,
 };
 
+static const struct dwc3_exynos_driverdata exynos7870_drvdata = {
+       .clk_names = { "bus_early", "ref", "ctrl" },
+       .num_clks = 3,
+       .suspend_clk_idx = -1,
+};
+
 static const struct dwc3_exynos_driverdata exynos850_drvdata = {
        .clk_names = { "bus_early", "ref" },
        .num_clks = 2,
@@ -185,6 +191,9 @@ static const struct of_device_id exynos_dwc3_match[] = {
        }, {
                .compatible = "samsung,exynos7-dwusb3",
                .data = &exynos7_drvdata,
+       }, {
+               .compatible = "samsung,exynos7870-dwusb3",
+               .data = &exynos7870_drvdata,
        }, {
                .compatible = "samsung,exynos850-dwusb3",
                .data = &exynos850_drvdata,