Add compatible string fsl,ls1028a-dwc3 and create a software managed node
property 'snps,gsbuscfg0-reqinfo' to enable cache snoop if dma is coherent.
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
drivers/usb/dwc3/dwc3-of-simple.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
index be7be00ecb349..0aa21ddd93cda 100644
--- a/drivers/usb/dwc3/dwc3-of-simple.c
+++ b/drivers/usb/dwc3/dwc3-of-simple.c
@@ -18,6 +18,7 @@
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/of.h>
+#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
@@ -52,6 +53,26 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
if (of_device_is_compatible(np, "rockchip,rk3399-dwc3"))
simple->need_reset = true;
+ if (of_device_is_compatible(np, "fsl,ls1028a-dwc3")) {
+ struct device_node *np = dev->of_node;
+ struct property_entry props[2] = {};
+ int prop_idx = 0, ret = 0;
+ struct device_node *dwc3_np __free(device_node)
+ = of_get_compatible_child(np, "snps,dwc3");
+
+ if (!dwc3_np)
+ return dev_err_probe(dev, -ENODEV, "failed to find dwc3 core child\n");
+
+ if (of_dma_is_coherent(dwc3_np))
+ props[prop_idx++] = PROPERTY_ENTRY_U16("snps,gsbuscfg0-reqinfo", 0x2222);
+
+ if (prop_idx)
+ ret = device_create_managed_software_node(dev, props, NULL);
+
+ if (ret)
+ return ret;
+ }
+
simple->resets = of_reset_control_array_get_optional_exclusive(np);
if (IS_ERR(simple->resets)) {
ret = PTR_ERR(simple->resets);
@@ -174,6 +195,7 @@ static const struct of_device_id of_dwc3_simple_match[] = {
{ .compatible = "hisilicon,hi3670-dwc3" },
{ .compatible = "hisilicon,hi3798mv200-dwc3" },
{ .compatible = "intel,keembay-dwc3" },
+ { .compatible = "fsl,ls1028a-dwc3" },
{ /* Sentinel */ }
};
MODULE_DEVICE_TABLE(of, of_dwc3_simple_match);
--
2.34.1
