usb: renesas_usbhs: Improve usbhsc_default_pipe[] for isochronous transfers

As per the hardware manual, double buffer setting results in fewer
interrupts for high-speed data transfers. Improve usbhsc_default_pipe[]
for isochronous transfers by updating the table from single->double
buffering and update the pipe number accordingly.

Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240319105356.87287-4-biju.das.jz@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 0c62e4c6c88d4e2111eba9a7e0efe0ba71d55822..177fa3144a476e79ddf0b19b2abd689846146abc 100644 (file)
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -366,11 +366,11 @@ static void usbhsc_clk_disable_unprepare(struct usbhs_priv *priv)
 /* commonly used on old SH-Mobile SoCs */
 static struct renesas_usbhs_driver_pipe_config usbhsc_default_pipe[] = {
        RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_CONTROL, 64, 0x00, false),
-       RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x08, false),
-       RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x18, false),
-       RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x28, true),
-       RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x38, true),
+       RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x08, true),
+       RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x28, true),
        RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x48, true),
+       RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x58, true),
+       RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x68, true),
        RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x04, false),
        RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x05, false),
        RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x06, false),