From 3e635202ce40e4d7ff3fafc18db70c5d28cc6622 Mon Sep 17 00:00:00 2001 From: Tuomas Tynkkynen Date: Mon, 12 Aug 2013 16:06:51 +0300 Subject: usb: phy: tegra: Tegra30 support The Tegra30 USB PHY is a bit different than the Tegra20 PHY: - The EHCI controller supports the HOSTPC register extension, and some of the fields that the PHY needs to modify (PHCD and PTS) have moved to the new HOSTPC register. - Some of the UTMI PLL configuration registers have moved from the USB register space to the Clock-And-Reset controller space. In Tegra30 the clock driver is responsible for configuring the UTMI PLL. - The USBMODE register must be explicitly written to enter host mode. - Certain PHY parameters need to be programmed for optimal signal quality. Support for this will be added in the next patch. The new tegra_phy_soc_config structure is added to describe the differences between the SoCs. Signed-off-by: Tuomas Tynkkynen Tested-by: Stephen Warren Reviewed-by: Stephen Warren Signed-off-by: Felipe Balbi --- include/linux/usb/tegra_usb_phy.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux/usb') diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h index d3db274610a1..d3a63c354db9 100644 --- a/include/linux/usb/tegra_usb_phy.h +++ b/include/linux/usb/tegra_usb_phy.h @@ -18,6 +18,24 @@ #include #include +/* + * utmi_pll_config_in_car_module: true if the UTMI PLL configuration registers + * should be set up by clk-tegra, false if by the PHY code + * has_hostpc: true if the USB controller has the HOSTPC extension, which + * changes the location of the PHCD and PTS fields + * requires_usbmode_setup: true if the USBMODE register needs to be set to + * enter host mode + * requires_extra_tuning_parameters: true if xcvr_hsslew, hssquelch_level + * and hsdiscon_level should be set for adequate signal quality + */ + +struct tegra_phy_soc_config { + bool utmi_pll_config_in_car_module; + bool has_hostpc; + bool requires_usbmode_setup; + bool requires_extra_tuning_parameters; +}; + struct tegra_utmip_config { u8 hssync_start_delay; u8 elastic_limit; @@ -47,6 +65,7 @@ struct tegra_usb_phy { struct regulator *vbus; enum usb_dr_mode mode; void *config; + const struct tegra_phy_soc_config *soc_config; struct usb_phy *ulpi; struct usb_phy u_phy; bool is_legacy_phy; -- cgit v1.2.3