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usb: renesas_usbhs: Improve usbhsc_default_pipe[] for isochronous transfers

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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>
This commit is contained in:
Biju Das 2024-03-19 10:53:53 +00:00 committed by Greg Kroah-Hartman
parent a79c5b6f67
commit 790effae39
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/renesas_usbhs/common.c
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@ -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),