On 12/03/2013 09:38 AM, Peter Chen wrote:
>
>>
>> On 12/03/2013 08:37 AM, Peter Chen wrote:
>>> Some PHY bugs are fixed by IC logic, but these bits are not
>>> enabled by default, so we enable them at driver.
>>>
>>> Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
>>> ---
>>> drivers/usb/phy/phy-mxs-usb.c | 20 ++++++++++++++++++++
>>> 1 files changed, 20 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-
>> usb.c
>>> index 8738890..0908d74 100644
>>> --- a/drivers/usb/phy/phy-mxs-usb.c
>>> +++ b/drivers/usb/phy/phy-mxs-usb.c
>>> @@ -31,6 +31,10 @@
>>> #define HW_USBPHY_CTRL_SET 0x34
>>> #define HW_USBPHY_CTRL_CLR 0x38
>>>
>>> +#define HW_USBPHY_IP 0x90
>>> +#define HW_USBPHY_IP_SET 0x94
>>> +#define HW_USBPHY_IP_CLR 0x98
>>> +
>>> #define BM_USBPHY_CTRL_SFTRST BIT(31)
>>> #define BM_USBPHY_CTRL_CLKGATE BIT(30)
>>> #define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS BIT(26)
>>> @@ -42,6 +46,8 @@
>>> #define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14)
>>> #define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1)
>>>
>>> +#define BM_USBPHY_IP_FIX (BIT(17) | BIT(18))
>>> +
>>> #define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
>>>
>>> /* Do disconnection between PHY and controller without vbus */
>>> @@ -97,6 +103,16 @@ struct mxs_phy {
>>> struct regmap *regmap_anatop;
>>> };
>>>
>>> +static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy)
>>> +{
>>> + return mxs_phy->data == &imx6q_phy_data;
>>> +}
>>> +
>>> +static inline bool is_imx6sl_phy(struct mxs_phy *mxs_phy)
>>> +{
>>> + return mxs_phy->data == &imx6sl_phy_data;
>>> +}
>>
>> Why don't you use a a BIT() here as in Patch 2/17, too?
>>
>
> Thanks, I will define the two PHY problems as the register bit
> position at 2/17, and use those two MACROs at this patch.
> Is it your point?
I was wondering if the driver looks more uniform if you use something
like this:
#define MXS_PHY_NEED_IP_FIX BIT(3)
> static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
> {
> int ret;
> @@ -123,6 +139,10 @@ static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
> BM_USBPHY_CTRL_ENUTMILEVEL3,
> base + HW_USBPHY_CTRL_SET);
>
> + /* Enable IC solution */
> + if (is_imx6q_phy(mxs_phy) || is_imx6sl_phy(mxs_phy))
if (mxs_phy->data->flags & MXS_PHY_NEED_IP_FIX)
> + writel(BM_USBPHY_IP_FIX, base + HW_USBPHY_IP_SET);
> +
> return 0;
> }
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
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