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usb: gadget: rcar: Add support for RZ/G2L (R9A07G044)

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The Renesas RZ/G2L (and RZ/G2LC) USBHS controller requires the
CNEN bit in the SYSCFG register to be set for function operation.
Additionally, its CFIFO is byte-addressable.

Introduce a new renesas_usbhs_driver_param structure for the
RZ/G2L SoC and link it via the udevice_id data pointer. Update
usbhs_probe() to accept the udevice pointer to retrieve these
parameters during initialization.

This alignment follows the logic used in the Linux kernel
renesas_usbhs driver.

Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Michele Bisogno <micbis.openwrt@gmail.com>
This commit is contained in:
Michele Bisogno
2026-04-26 09:43:19 +02:00
committed by Marek Vasut
parent dc9f0d7177
commit d0d1d11119
2 changed files with 21 additions and 0 deletions
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20
drivers/usb/gadget/rcar/common.c
View File

@@ -92,6 +92,12 @@ void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable)
u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
u16 val = HSE | USBE;
/* CNEN bit is required for function operation */
if (usbhs_get_dparam(priv, has_cnen)) {
mask |= CNEN;
val |= CNEN;
}
/*
* if enable
*
@@ -363,13 +369,21 @@ static int usbhs_probe(struct udevice *dev)
{
struct usbhs_priv_otg_data *otg_priv = dev_get_priv(dev);
struct usbhs_priv *priv = &otg_priv->usbhs_priv;
struct renesas_usbhs_driver_param *plat_param;
int ret;
plat_param = (struct renesas_usbhs_driver_param *)dev_get_driver_data(dev);
priv->dparam.type = USBHS_TYPE_RCAR_GEN3;
priv->dparam.pio_dma_border = 64;
priv->dparam.pipe_configs = usbhsc_new_pipe;
priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
if (plat_param) {
priv->dparam.has_cnen = plat_param->has_cnen;
priv->dparam.cfifo_byte_addr = plat_param->cfifo_byte_addr;
}
/* call pipe and module init */
ret = usbhs_pipe_probe(priv);
if (ret < 0)
@@ -487,8 +501,14 @@ static int usbhs_udc_otg_remove(struct udevice *dev)
return dm_scan_fdt_dev(dev);
}
static struct renesas_usbhs_driver_param rzg2l_param = {
.has_cnen = 1,
.cfifo_byte_addr = 1,
};
static const struct udevice_id usbhs_udc_otg_ids[] = {
{ .compatible = "renesas,rcar-gen3-usbhs" },
{ .compatible = "renesas,rzg2l-usbhs", .data = (unsigned long)&rzg2l_param },
{},
};

1
drivers/usb/gadget/rcar/renesas_usb.h
View File

@@ -111,6 +111,7 @@ struct renesas_usbhs_driver_param {
u32 has_otg:1; /* for controlling PWEN/EXTLP */
u32 has_sudmac:1; /* for SUDMAC */
u32 has_usb_dmac:1; /* for USB-DMAC */
u32 has_cnen:1;
u32 cfifo_byte_addr:1; /* CFIFO is byte addressable */
#define USBHS_USB_DMAC_XFER_SIZE 32 /* hardcode the xfer size */
u32 multi_clks:1;