Author: br
Date: Fri May 30 07:48:55 2014
New Revision: 266875
URL: http://svnweb.freebsd.org/changeset/base/266875
Log:
Reset HSIC hub during EHCI initialization. This makes devices connected
to external USB ports available to the system.
Submitted by: Maxim Ignatenko <gelraen...@gmail.com>
Modified:
head/sys/arm/samsung/exynos/exynos5_ehci.c
head/sys/boot/fdt/dts/arm/exynos5250-chromebook-spring.dts
Modified: head/sys/arm/samsung/exynos/exynos5_ehci.c
==============================================================================
--- head/sys/arm/samsung/exynos/exynos5_ehci.c Fri May 30 07:43:55 2014
(r266874)
+++ head/sys/arm/samsung/exynos/exynos5_ehci.c Fri May 30 07:48:55 2014
(r266875)
@@ -180,9 +180,43 @@ gpio_ctrl(struct exynos_ehci_softc *esc,
}
static int
+reset_hsic_hub(struct exynos_ehci_softc *esc, phandle_t hub)
+{
+ device_t gpio_dev;
+ pcell_t pin;
+
+ /* TODO(imax): check that hub is compatible with "smsc,usb3503" */
+ if (!OF_hasprop(hub, "freebsd,reset-gpio")) {
+ device_printf(esc->dev,
+ "cannot detect reset GPIO pin for HSIC hub\n");
+ return (1);
+ }
+
+ if (OF_getencprop(hub, "freebsd,reset-gpio", &pin, sizeof(pin)) < 0) {
+ device_printf(esc->dev,
+ "failed to decode reset GPIO pin number for HSIC hub\n");
+ return (1);
+ }
+
+ /* Get the GPIO device, we need this to give power to USB */
+ gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
+ if (gpio_dev == NULL) {
+ device_printf(esc->dev, "cant find gpio_dev\n");
+ return (1);
+ }
+
+ GPIO_PIN_SET(gpio_dev, pin, GPIO_PIN_LOW);
+ DELAY(100);
+ GPIO_PIN_SET(gpio_dev, pin, GPIO_PIN_HIGH);
+
+ return (0);
+}
+
+static int
phy_init(struct exynos_ehci_softc *esc)
{
int reg;
+ phandle_t hub;
gpio_ctrl(esc, GPIO_INPUT, 1);
@@ -212,6 +246,10 @@ phy_init(struct exynos_ehci_softc *esc)
reg &= ~(HOST_CTRL_RESET_LINK);
bus_space_write_4(esc->host_bst, esc->host_bsh, 0x0, reg);
+ if ((hub = OF_finddevice("/hsichub")) != 0) {
+ reset_hsic_hub(esc, hub);
+ }
+
gpio_ctrl(esc, GPIO_OUTPUT, 1);
return (0);
Modified: head/sys/boot/fdt/dts/arm/exynos5250-chromebook-spring.dts
==============================================================================
--- head/sys/boot/fdt/dts/arm/exynos5250-chromebook-spring.dts Fri May 30
07:43:55 2014 (r266874)
+++ head/sys/boot/fdt/dts/arm/exynos5250-chromebook-spring.dts Fri May 30
07:48:55 2014 (r266875)
@@ -70,4 +70,9 @@
stdin = &serial2;
stdout = &serial2;
};
+
+ hsichub@13400000 {
+ compatible = "smsc,usb3503";
+ freebsd,reset-gpio = <172>;
+ };
};
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