usb: dwc2: support dwc2 IP for Amlogic A1 SoC family

The Amlogic A1 uses dwc2 Synopsys IP as its USB peripheral (gadget)
endpoint, with different DWC2 parameters when compared to previous
Amlogic SoCs.

Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/20230511210455.6634-2-ddrokosov@sberdevices.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index 21d16533bd2f4f4720db2b82092ee04c5ea22372..4c7c3dd15f9bec95158b8f4f10743207be010993 100644 (file)
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -161,6 +161,25 @@ static void dwc2_set_amlogic_g12a_params(struct dwc2_hsotg *hsotg)
        p->hird_threshold_en = false;
 }
 
+static void dwc2_set_amlogic_a1_params(struct dwc2_hsotg *hsotg)
+{
+       struct dwc2_core_params *p = &hsotg->params;
+
+       p->otg_caps.hnp_support = false;
+       p->otg_caps.srp_support = false;
+       p->speed = DWC2_SPEED_PARAM_HIGH;
+       p->host_rx_fifo_size = 192;
+       p->host_nperio_tx_fifo_size = 128;
+       p->host_perio_tx_fifo_size = 128;
+       p->phy_type = DWC2_PHY_TYPE_PARAM_UTMI;
+       p->phy_utmi_width = 8;
+       p->ahbcfg = GAHBCFG_HBSTLEN_INCR8 << GAHBCFG_HBSTLEN_SHIFT;
+       p->lpm = false;
+       p->lpm_clock_gating = false;
+       p->besl = false;
+       p->hird_threshold_en = false;
+}
+
 static void dwc2_set_amcc_params(struct dwc2_hsotg *hsotg)
 {
        struct dwc2_core_params *p = &hsotg->params;
@@ -258,6 +277,8 @@ const struct of_device_id dwc2_of_match_table[] = {
          .data = dwc2_set_amlogic_params },
        { .compatible = "amlogic,meson-g12a-usb",
          .data = dwc2_set_amlogic_g12a_params },
+       { .compatible = "amlogic,meson-a1-usb",
+         .data = dwc2_set_amlogic_a1_params },
        { .compatible = "amcc,dwc-otg", .data = dwc2_set_amcc_params },
        { .compatible = "apm,apm82181-dwc-otg", .data = dwc2_set_amcc_params },
        { .compatible = "st,stm32f4x9-fsotg",