diff options
| author | Roger Quadros <rogerq@ti.com> | 2013-03-12 13:24:25 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-03-18 11:15:12 +0200 |
| commit | 0eba387973f521e57f00584e5e840e5328a61dda (patch) | |
| tree | ea216d8038e2982dd79c8cc3b34cf9db116ed129 /drivers/usb/otg | |
| parent | 90f4232f31f087f86667da03b1a4f3c90a32cb4a (diff) | |
usb: phy: nop: Add device tree support and binding information
The PHY clock, clock rate, VCC regulator and RESET regulator
can now be provided via device tree.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/otg')
| -rw-r--r-- | drivers/usb/otg/nop-usb-xceiv.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c index fe7a4600185..b26b1c29194 100644 --- a/drivers/usb/otg/nop-usb-xceiv.c +++ b/drivers/usb/otg/nop-usb-xceiv.c @@ -34,13 +34,14 @@ #include <linux/slab.h> #include <linux/clk.h> #include <linux/regulator/consumer.h> +#include <linux/of.h> struct nop_usb_xceiv { - struct usb_phy phy; - struct device *dev; - struct clk *clk; - struct regulator *vcc; - struct regulator *reset; + struct usb_phy phy; + struct device *dev; + struct clk *clk; + struct regulator *vcc; + struct regulator *reset; }; static struct platform_device *pd; @@ -140,10 +141,12 @@ static int nop_set_host(struct usb_otg *otg, struct usb_bus *host) static int nop_usb_xceiv_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct nop_usb_xceiv_platform_data *pdata = pdev->dev.platform_data; struct nop_usb_xceiv *nop; enum usb_phy_type type = USB_PHY_TYPE_USB2; int err; + u32 clk_rate = 0; nop = devm_kzalloc(&pdev->dev, sizeof(*nop), GFP_KERNEL); if (!nop) @@ -154,8 +157,16 @@ static int nop_usb_xceiv_probe(struct platform_device *pdev) if (!nop->phy.otg) return -ENOMEM; - if (pdata) + if (dev->of_node) { + struct device_node *node = dev->of_node; + + if (of_property_read_u32(node, "clock-frequency", &clk_rate)) + clk_rate = 0; + + } else if (pdata) { type = pdata->type; + clk_rate = pdata->clk_rate; + } nop->clk = devm_clk_get(&pdev->dev, "main_clk"); if (IS_ERR(nop->clk)) { @@ -163,8 +174,8 @@ static int nop_usb_xceiv_probe(struct platform_device *pdev) PTR_ERR(nop->clk)); } - if (!IS_ERR(nop->clk) && pdata && pdata->clk_rate) { - err = clk_set_rate(nop->clk, pdata->clk_rate); + if (!IS_ERR(nop->clk) && clk_rate) { + err = clk_set_rate(nop->clk, clk_rate); if (err) { dev_err(&pdev->dev, "Error setting clock rate\n"); return err; @@ -237,12 +248,20 @@ static int nop_usb_xceiv_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id nop_xceiv_dt_ids[] = { + { .compatible = "usb-nop-xceiv" }, + { } +}; + +MODULE_DEVICE_TABLE(of, nop_xceiv_dt_ids); + static struct platform_driver nop_usb_xceiv_driver = { .probe = nop_usb_xceiv_probe, .remove = nop_usb_xceiv_remove, .driver = { .name = "nop_usb_xceiv", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(nop_xceiv_dt_ids), }, }; |