Hi Marek,

Thank you for reviewing.

On 2023/01/23 10:42, Marek Vasut wrote:
On 1/23/23 01:47, Kunihiko Hayashi wrote:
The glue driver doesn't do or offer actively anything, SIMPLE_BUS is
more preferable to represent the driver.

Signed-off-by: Kunihiko Hayashi <hayashi.kunih...@socionext.com>
---
   drivers/usb/dwc3/Kconfig | 4 ++--
   1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index f010291d02..dadaa083e7 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -25,14 +25,14 @@ config USB_DWC3_OMAP
config USB_DWC3_GENERIC
        bool "Generic implementation of a DWC3 wrapper (aka dwc3 glue)"
-       depends on DM_USB && USB_DWC3 && MISC
+       depends on DM_USB && USB_DWC3 && (MISC || SIMPLE_BUS)

I'm afraid I don't understand why this change is needed for all variants
of DWC3.

Although dwc3-generic is declared as UCLASS_NOP, the similar glue driver
dwc3-meson-glx is declared as UCLASS_SIMPLE_BUS.

Is this needed for socionext dwc3 variant to handle the simple-mfd in
e.g. arch/arm/dts/uniphier-pxs3.dtsi :

614 usb-glue@65b00000 {
615     compatible = "socionext,uniphier-pxs3-dwc3-glue",
616              "simple-mfd";

?

In case of U-Boot, the glue driver is probed by:

    /* FIXME: U-Boot own node */
    usb@65b00000 {
            compatible = "socionext,uniphier-pxs3-dwc3";

And dwc3-uniphier is also declared as UCLASS_SIMPLE_BUS.
Even if using "simple-mfd", this is included in drivers/core/simple-bus.c
which is declared as UCLASS_SIMPLE_BUS.

Thank you,

---
Best Regards
Kunihiko Hayashi

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