[PATCH v4 1/3] usb: dwc2: support dwc2 IP for Amlogic A1 SoC family

[Dmitry Rokosov]

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 at sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>
Acked-by: Minas Harutyunyan <Minas.Harutyunyan at synopsys.com>
---
 drivers/usb/dwc2/params.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index 9ed9fd956940..098fbfc774ab 100644
--- 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",
-- 
2.36.0