[U-Boot] [PATCH v4 2/4] board: evb-rk3399: add api to support dwc3 gadget

[Kever Yang <kever.yang@rock-chips.com>]

Hi Marek,

On 09/01/2016 04:59 PM, Marek Vasut wrote:
> On 09/01/2016 04:14 AM, Kever Yang wrote:
>> This patch add board_usb_init() and interrupt callback
>> for dwc3 gadget.
>>
>> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
>> ---
>>
>> Changes in v4:
>> - parse DT for quirk, base address and maximum speed
>>
>> Changes in v3:
>> - remove utmi width DT parse from borad init
>>
>> Changes in v2:
>> - parse dt for utmi width
>>
>>   board/rockchip/evb_rk3399/evb-rk3399.c | 51 ++++++++++++++++++++++++++++++++++
>>   1 file changed, 51 insertions(+)
>>
>> diff --git a/board/rockchip/evb_rk3399/evb-rk3399.c b/board/rockchip/evb_rk3399/evb-rk3399.c
>> index d394276..58bfa78 100644
>> --- a/board/rockchip/evb_rk3399/evb-rk3399.c
>> +++ b/board/rockchip/evb_rk3399/evb-rk3399.c
>> @@ -7,6 +7,8 @@
>>   #include <dm.h>
>>   #include <dm/pinctrl.h>
>>   #include <asm/arch/periph.h>
>> +#include <usb.h>
>> +#include <dwc3-uboot.h>
>>   
>>   DECLARE_GLOBAL_DATA_PTR;
>>   
>> @@ -54,3 +56,52 @@ void dram_init_banksize(void)
>>   	gd->bd->bi_dram[0].start = 0x200000;
>>   	gd->bd->bi_dram[0].size = 0x80000000;
>>   }
>> +
>> +#ifdef CONFIG_USB_DWC3
>> +static struct dwc3_device dwc3_device_data = {
>> +	.index = 0,
>> +};
>> +
>> +int usb_gadget_handle_interrupts(void)
>> +{
>> +	dwc3_uboot_handle_interrupt(0);
>> +	return 0;
>> +}
>> +
>> +int board_usb_init(int index, enum usb_init_type init)
>> +{
>> +	const void *blob = gd->fdt_blob;
>> +	int node;
>> +	const char *string;
>> +
>> +	node = fdt_node_offset_by_compatible(blob, -1,
>> +			"rockchip,rk3399-xhci");
>> +	if (node < 0) {
>> +		debug("%s dwc3 node not found\n", __func__);
>> +	} else {
>> +		dwc3_device_data.base = fdtdec_get_addr(blob, node, "reg");
>> +		dwc3_device_data.dis_u2_susphy_quirk =
>> +			fdtdec_get_int(blob, node,
>> +				       "snps,dis-u2-susphy-quirk", -1);
>> +
>> +		string = fdt_getprop(blob, node, "maximum-speed", NULL);
>> +		if (string) {
>> +			if (0 == strcmp(string, "super-speed"))
>> +				dwc3_device_data.maximum_speed = USB_SPEED_SUPER;
>> +			else if (0 == strcmp(string, "high-speed"))
>> +				dwc3_device_data.maximum_speed = USB_SPEED_HIGH;
>> +			else if (0 == strcmp(string, "full-speed"))
>> +				dwc3_device_data.maximum_speed = USB_SPEED_FULL;
>> +			else
>> +				debug("%s: Cannot decode speed'%s'\n", __func__,
>> +				      string);
>> +		} else {
>> +			dwc3_device_data.maximum_speed = USB_SPEED_HIGH;
>> +		}
>> +		/* Hardcode controller in peripheral mode */
>> +		dwc3_device_data.dr_mode = USB_DR_MODE_PERIPHERAL;
>> +	}
>> +
>> +	return dwc3_uboot_init(&dwc3_device_data);
>> +}
>> +#endif
>>
> So will every board have a copy of this exact code, verbatim ?
>
Yes for rk3399 based board.
Not sure why you ask this question, but I guess you still want these 
parse happen in driver instead of board_init()?
I didn't make these code in dwc3 driver because other SoC dts are 
different now, they are init in platdata data structure.

To be honest, I want to make the upstream code to support rk3399 dwc3, 
but I don't want to touch too much code in other SoC.

Thanks,
- Kever