Re: [PATCH] usb: phy: mxs: Add DT bindings to configure TX settings

2016-08-18 Thread Rob Herring
On Tue, Aug 16, 2016 at 06:31:48PM -0400, Jaret Cantu wrote: > The TX settings can be calibrated for particular hardware. The > phy is reset by Linux, so this cannot be handled by the bootloader. > > The TRM mentions that the maximum resistance should be used for the > DN/DP calibration in order

Re: [PATCH] usb: phy: mxs: Add DT bindings to configure TX settings

2016-08-16 Thread Peter Chen
On Tue, Aug 16, 2016 at 06:31:48PM -0400, Jaret Cantu wrote: > The TX settings can be calibrated for particular hardware. The > phy is reset by Linux, so this cannot be handled by the bootloader. > > The TRM mentions that the maximum resistance should be used for the > DN/DP calibration in order

[PATCH] usb: phy: mxs: Add DT bindings to configure TX settings

2016-08-16 Thread Jaret Cantu
The TX settings can be calibrated for particular hardware. The phy is reset by Linux, so this cannot be handled by the bootloader. The TRM mentions that the maximum resistance should be used for the DN/DP calibration in order to pass USB certification. The values for the TX registers are poorly

Re: [PATCH] usb: phy: mxs: Add DT bindings to configure TX settings

2016-03-04 Thread Peter Chen
On Thu, Mar 03, 2016 at 04:29:31PM -0500, Jaret Cantu wrote: > +static void mxs_phy_tx_init(struct mxs_phy *mxs_phy) > +{ > + void __iomem *base = mxs_phy->phy.io_priv; > + u32 phytx; > + > + /* Update TX register if there is anything to write */ > + if (mxs_phy->tx_reg_mask) { > +

Re: [PATCH] usb: phy: mxs: Add DT bindings to configure TX settings

2016-03-03 Thread Felipe Balbi
Jaret Cantu writes: > [ text/plain ] > The TX settings can be calibrated for particular hardware. The > phy is reset by Linux, so this cannot be handled by the bootloader. > > The TRM mentions that the maximum resistance should be used for the > DN/DP calibration in order to pass USB certificati

[PATCH] usb: phy: mxs: Add DT bindings to configure TX settings

2016-03-03 Thread Jaret Cantu
The TX settings can be calibrated for particular hardware. The phy is reset by Linux, so this cannot be handled by the bootloader. The TRM mentions that the maximum resistance should be used for the DN/DP calibration in order to pass USB certification. The values for the TX registers are poorly