On Monday 07 November 2016 06:35 PM, Alexandre Bailon wrote:
> If we configure the da8xx OTG phy in OTG mode, neither device or host
> mode will work. That is because the PHY is not able to detect and notify
> the driver that value of ID pin changed.
> To work despite this hardware limitation, the da8xx glue implement a
> workaround.
> But to work, the workaround require the VBUS sense and the session end
> comparator to enabled.
> Enable them if the phy is configured in OTG mode.
>
> Signed-off-by: Alexandre Bailon <abai...@baylibre.com>
merged this to phy -next.
Thanks
Kishon
> ---
> drivers/phy/phy-da8xx-usb.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/phy/phy-da8xx-usb.c b/drivers/phy/phy-da8xx-usb.c
> index 32ae78c..089c13b 100644
> --- a/drivers/phy/phy-da8xx-usb.c
> +++ b/drivers/phy/phy-da8xx-usb.c
> @@ -23,6 +23,8 @@
> #include <linux/platform_device.h>
> #include <linux/regmap.h>
>
> +#define PHY_INIT_BITS (CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN)
> +
> struct da8xx_usb_phy {
> struct phy_provider *phy_provider;
> struct phy *usb11_phy;
> @@ -207,6 +209,9 @@ static int da8xx_usb_phy_probe(struct platform_device
> *pdev)
> dev_warn(dev, "Failed to create usb20 phy lookup\n");
> }
>
> + regmap_write_bits(d_phy->regmap, CFGCHIP(2),
> + PHY_INIT_BITS, PHY_INIT_BITS);
> +
> return 0;
> }
>
>
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