diff options
| author | Patrick Delaunay | 2020-04-27 15:29:59 +0200 |
|---|---|---|
| committer | Marek Vasut | 2020-04-28 13:52:52 +0200 |
| commit | 0bc632c9b189f0350b2ef81d6583704bd10cfdc9 (patch) | |
| tree | d7e3ce453582f8c44e02ff7683caad6756ccf7b4 /drivers | |
| parent | e17a4bf198510693967644c331ab621fc41ea8b5 (diff) | |
usb: host: dwc2: add clk support
Add support for clock with driver model.
This patch don't added dependency because when CONFIG_CLK
is not activated the clk function are stubbed.
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/dwc2.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c index a8e64825b56..b1b79d0a180 100644 --- a/drivers/usb/host/dwc2.c +++ b/drivers/usb/host/dwc2.c @@ -5,14 +5,15 @@ */ #include <common.h> +#include <clk.h> #include <cpu_func.h> #include <dm.h> #include <errno.h> #include <generic-phy.h> -#include <usb.h> #include <malloc.h> #include <memalign.h> #include <phys2bus.h> +#include <usb.h> #include <usbroothubdes.h> #include <wait_bit.h> #include <asm/io.h> @@ -39,6 +40,7 @@ struct dwc2_priv { struct udevice *vbus_supply; #endif struct phy phy; + struct clk_bulk clks; #else uint8_t *aligned_buffer; uint8_t *status_buffer; @@ -1377,6 +1379,26 @@ static int dwc2_shutdown_phy(struct udevice *dev) return 0; } +static int dwc2_clk_init(struct udevice *dev) +{ + struct dwc2_priv *priv = dev_get_priv(dev); + int ret; + + ret = clk_get_bulk(dev, &priv->clks); + if (ret == -ENOSYS || ret == -ENOENT) + return 0; + if (ret) + return ret; + + ret = clk_enable_bulk(&priv->clks); + if (ret) { + clk_release_bulk(&priv->clks); + return ret; + } + + return 0; +} + static int dwc2_usb_probe(struct udevice *dev) { struct dwc2_priv *priv = dev_get_priv(dev); @@ -1385,6 +1407,10 @@ static int dwc2_usb_probe(struct udevice *dev) bus_priv->desc_before_addr = true; + ret = dwc2_clk_init(dev); + if (ret) + return ret; + ret = dwc2_setup_phy(dev); if (ret) return ret; @@ -1410,6 +1436,8 @@ static int dwc2_usb_remove(struct udevice *dev) dwc2_uninit_common(priv->regs); reset_release_bulk(&priv->resets); + clk_disable_bulk(&priv->clks); + clk_release_bulk(&priv->clks); return 0; } |