[PATCH 1/8] usb: dwc3: add dis_enblslpm_quirk

[Kever Yang]

Hi Frank,

On 2020/4/28 下午2:27, Frank Wang wrote:
> Add a quirk to clear the GUSB2PHYCFG.ENBLSLPM bit, which controls
> whether the PHY receives the suspend signal from the controller.
>
> Refer to commit ec791d149bca("usb: dwc3: Add dis_enblslpm_quirk")
> in Linux Kernel.
>
> Signed-off-by: Frank Wang <frank.wang at rock-chips.com>


Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
>   drivers/usb/dwc3/core.c | 6 ++++++
>   drivers/usb/dwc3/core.h | 1 +
>   include/dwc3-uboot.h    | 1 +
>   3 files changed, 8 insertions(+)
>
> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> index 4ec3f6df6a..a80e7d54aa 100644
> --- a/drivers/usb/dwc3/core.c
> +++ b/drivers/usb/dwc3/core.c
> @@ -395,6 +395,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc)
>   	if (dwc->dis_u2_susphy_quirk)
>   		reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
>   
> +	if (dwc->dis_enblslpm_quirk)
> +		reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM;
> +
>   	dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
>   
>   	mdelay(100);
> @@ -715,6 +718,7 @@ int dwc3_uboot_init(struct dwc3_device *dwc3_dev)
>   	dwc->rx_detect_poll_quirk = dwc3_dev->rx_detect_poll_quirk;
>   	dwc->dis_u3_susphy_quirk = dwc3_dev->dis_u3_susphy_quirk;
>   	dwc->dis_u2_susphy_quirk = dwc3_dev->dis_u2_susphy_quirk;
> +	dwc->dis_enblslpm_quirk = dwc3_dev->dis_enblslpm_quirk;
>   
>   	dwc->tx_de_emphasis_quirk = dwc3_dev->tx_de_emphasis_quirk;
>   	if (dwc3_dev->tx_de_emphasis)
> @@ -975,6 +979,8 @@ void dwc3_of_parse(struct dwc3 *dwc)
>   				"snps,dis_u3_susphy_quirk");
>   	dwc->dis_u2_susphy_quirk = dev_read_bool(dev,
>   				"snps,dis_u2_susphy_quirk");
> +	dwc->dis_enblslpm_quirk = dev_read_bool(dev,
> +				"snps,dis_enblslpm_quirk");
>   	dwc->tx_de_emphasis_quirk = dev_read_bool(dev,
>   				"snps,tx_de_emphasis_quirk");
>   	tmp = dev_read_u8_array_ptr(dev, "snps,tx_de_emphasis", 1);
> diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
> index 1c08a2c5b6..eabbc30f25 100644
> --- a/drivers/usb/dwc3/core.h
> +++ b/drivers/usb/dwc3/core.h
> @@ -821,6 +821,7 @@ struct dwc3 {
>   	unsigned		rx_detect_poll_quirk:1;
>   	unsigned		dis_u3_susphy_quirk:1;
>   	unsigned		dis_u2_susphy_quirk:1;
> +	unsigned		dis_enblslpm_quirk:1;
>   
>   	unsigned		tx_de_emphasis_quirk:1;
>   	unsigned		tx_de_emphasis:2;
> diff --git a/include/dwc3-uboot.h b/include/dwc3-uboot.h
> index 3c9e204cf0..fd3f173c37 100644
> --- a/include/dwc3-uboot.h
> +++ b/include/dwc3-uboot.h
> @@ -32,6 +32,7 @@ struct dwc3_device {
>   	unsigned rx_detect_poll_quirk;
>   	unsigned dis_u3_susphy_quirk;
>   	unsigned dis_u2_susphy_quirk;
> +	unsigned dis_enblslpm_quirk;
>   	unsigned tx_de_emphasis_quirk;
>   	unsigned tx_de_emphasis;
>   	int index;