UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

usb: dwc3: core: add support for realtek SoCs custom's global register start address 

The Realtek RTD SoCs were designed with the global register address
offset at 0x8100. The default address offset is constant at
DWC3_GLOBALS_REGS_START (0xc100). Therefore, add a check if the
compatible name of the parent is realtek,rtd-dwc3, then global
register start address will remap to 0x8100.

Signed-off-by: Stanley Chang <stanley_chang@realtek.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20230505025104.18321-1-stanley_chang@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stanley Chang 2023-05-05 10:50:54 +08:00 committed by Greg Kroah-Hartman
parent 1c024241d0
commit ec5eb43813
2 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/usb/dwc3/core.c
View File

@ -1800,6 +1800,17 @@ static int dwc3_probe(struct platform_device *pdev)
dwc_res = *res;
dwc_res.start += DWC3_GLOBALS_REGS_START;
if (dev->of_node) {
struct device_node *parent = of_get_parent(dev->of_node);
if (of_device_is_compatible(parent, "realtek,rtd-dwc3")) {
dwc_res.start -= DWC3_GLOBALS_REGS_START;
dwc_res.start += DWC3_RTK_RTD_GLOBALS_REGS_START;
}
of_node_put(parent);
}
regs = devm_ioremap_resource(dev, &dwc_res);
if (IS_ERR(regs))
return PTR_ERR(regs);

2
drivers/usb/dwc3/core.h
View File

@ -84,6 +84,8 @@
#define DWC3_OTG_REGS_START 0xcc00
#define DWC3_OTG_REGS_END 0xccff
#define DWC3_RTK_RTD_GLOBALS_REGS_START 0x8100
/* Global Registers */
#define DWC3_GSBUSCFG0 0xc100
#define DWC3_GSBUSCFG1 0xc104