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usb: dwc2: Add force-b-session-valid support

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Handle "force-b-session-valid" property from DT.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Patrick Delaunay 2019-03-29 15:42:17 +01:00 committed by Marek Vasut
parent c2c74f97af
commit 0fdd0bc621
3 changed files with 16 additions and 2 deletions
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9
drivers/usb/gadget/dwc2_udc_otg.c
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@ -1034,6 +1034,9 @@ static int dwc2_udc_otg_ofdata_to_platdata(struct udevice *dev)
"g-np-tx-fifo-size", 0);
platdata->tx_fifo_sz = dev_read_u32_default(dev, "g-tx-fifo-size", 0);
platdata->force_b_session_valid =
dev_read_bool(dev, "force-b-session-valid");
return 0;
}
@ -1088,6 +1091,8 @@ static int dwc2_udc_otg_probe(struct udevice *dev)
{
struct dwc2_plat_otg_data *platdata = dev_get_platdata(dev);
struct dwc2_priv_data *priv = dev_get_priv(dev);
struct dwc2_usbotg_reg *usbotg_reg =
(struct dwc2_usbotg_reg *)platdata->regs_otg;
int ret;
ret = dwc2_udc_otg_clk_init(dev, &priv->clks);
@ -1102,6 +1107,10 @@ static int dwc2_udc_otg_probe(struct udevice *dev)
if (ret)
return ret;
if (platdata->force_b_session_valid)
/* Override B session bits : value and enable */
setbits_le32(&usbotg_reg->gotgctl, B_VALOEN | B_VALOVAL);
ret = dwc2_udc_probe(platdata);
if (ret)
return ret;

8
drivers/usb/gadget/dwc2_udc_otg_regs.h
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@ -83,8 +83,12 @@ struct dwc2_usbotg_reg {
/*definitions related to CSR setting */
/* DWC2_UDC_OTG_GOTGCTL */
#define B_SESSION_VALID (0x1<<19)
#define A_SESSION_VALID (0x1<<18)
#define B_SESSION_VALID BIT(19)
#define A_SESSION_VALID BIT(18)
#define B_VALOVAL BIT(7)
#define B_VALOEN BIT(6)
#define A_VALOVAL BIT(5)
#define A_VALOEN BIT(4)
/* DWC2_UDC_OTG_GAHBCFG */
#define PTXFE_HALF (0<<8)

1
include/usb/dwc2_udc.h
View File

@ -22,6 +22,7 @@ struct dwc2_plat_otg_data {
unsigned int rx_fifo_sz;
unsigned int np_tx_fifo_sz;
unsigned int tx_fifo_sz;
bool force_b_session_valid;
};
int dwc2_udc_probe(struct dwc2_plat_otg_data *pdata);