USB maintainer asked for clarification of the magic value used during USB init. Be clear about the source of it. Signed-off-by: Maxime Bizon <mbizon@xxxxxxxxxx> --- drivers/usb/host/ehci-bcm63xx.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/drivers/usb/host/ehci-bcm63xx.c b/drivers/usb/host/ehci-bcm63xx.c index 8a62c0a..c2b3e7f 100644 --- a/drivers/usb/host/ehci-bcm63xx.c +++ b/drivers/usb/host/ehci-bcm63xx.c @@ -78,7 +78,11 @@ static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev) reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK; bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_REG); - /* don't ask... */ + /* + * The magic value comes for the original vendor BSP and is + * needed for USB to work. Datasheet does not help, so the + * magic value is used as-is. + */ bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, USBH_PRIV_TEST_REG); hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx"); -- 1.6.0.4
