[PATCH 2/3] usb: dwc2: Add Siflower SF19A2890 support

[Joseph Telaak via B4 Relay]

From: Chuanhong Guo <gch981213@xxxxxxxxx>

The Siflower SF19A2890 has a DWC OTG 3.30a controller. Limit its
transfers to 65535 bytes and its AHB bursts to INCR4, the settings the
OpenWrt port has run it with.

Signed-off-by: Chuanhong Guo <gch981213@xxxxxxxxx>
[jt: from OpenWrt's siflower target, rebased on v7.4-rc1, commit message,
 subject]
Signed-off-by: Joseph Telaak <joseph@xxxxxxxxxx>
---
 drivers/usb/dwc2/params.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index 091bfcfef..f6379e616 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -237,6 +237,14 @@ static void dwc2_set_cv1800_params(struct dwc2_hsotg *hsotg)
 	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
 }
 
+static void dwc2_set_sf19a2890_params(struct dwc2_hsotg *hsotg)
+{
+	struct dwc2_core_params *p = &hsotg->params;
+
+	p->max_transfer_size = 65535;
+	p->ahbcfg = GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT;
+}
+
 static void dwc2_set_stm32f4x9_fsotg_params(struct dwc2_hsotg *hsotg)
 {
 	struct dwc2_core_params *p = &hsotg->params;
@@ -336,6 +344,8 @@ const struct of_device_id dwc2_of_match_table[] = {
 	{ .compatible = "apm,apm82181-dwc-otg", .data = dwc2_set_amcc_params },
 	{ .compatible = "sophgo,cv1800b-usb",
 	  .data = dwc2_set_cv1800_params },
+	{ .compatible = "siflower,sf19a2890-usb",
+	  .data = dwc2_set_sf19a2890_params },
 	{ .compatible = "st,stm32f4x9-fsotg",
 	  .data = dwc2_set_stm32f4x9_fsotg_params },
 	{ .compatible = "st,stm32f4x9-hsotg" },

-- 
Git-155)