Hi Stephen,
Am Donnerstag, den 01.11.2012, 16:14 -0600 schrieb Stephen Warren:
From: Stephen Warren swarren@nvidia.com
TrimSlice's USB1 port has two purposes; it either acts as a device port hosting Tegra's USB recovery protocol, or acts as a host port connected to the internal USB->SATA bridge chip, which may in turn be connected to an SSD or HDD. Add the appropriate device tree and board configuration options to enable this port as a host port, and route the port to the SATA bridge using the VBUS GPIO.
Hm, I don't really like to abuse the VBUS GPIO for this function. As the GPIO controlled routing is more a sort of pinmux can't you just add the GPIO enable to pin_mux_usb()?
Signed-off-by: Stephen Warren swarren@nvidia.com
board/compulab/dts/tegra20-trimslice.dts | 3 ++- board/compulab/trimslice/trimslice.c | 8 ++++++++ include/configs/trimslice.h | 1 + 3 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/board/compulab/dts/tegra20-trimslice.dts b/board/compulab/dts/tegra20-trimslice.dts index db79e77..4450674 100644 --- a/board/compulab/dts/tegra20-trimslice.dts +++ b/board/compulab/dts/tegra20-trimslice.dts @@ -8,6 +8,7 @@
aliases { usb0 = "/usb@c5008000";
usb1 = "/usb@c5000000";};
memory {
@@ -48,7 +49,7 @@ };
usb@c5000000 {
status = "disabled";
nvidia,vbus-gpio = <&gpio 170 0>; /* PV2 */};
usb@c5004000 {
diff --git a/board/compulab/trimslice/trimslice.c b/board/compulab/trimslice/trimslice.c index 9ef66fd..8f4dd09 100644 --- a/board/compulab/trimslice/trimslice.c +++ b/board/compulab/trimslice/trimslice.c @@ -34,6 +34,14 @@ #include <mmc.h> #endif
+void pin_mux_usb(void) +{
- /*
* USB1 internal/external mux GPIO, which masquerades as a VBUS GPIO* in the current device tree.*/- pinmux_tristate_disable(PINGRP_UAC);
+}
void pin_mux_spi(void) { diff --git a/include/configs/trimslice.h b/include/configs/trimslice.h index eeb0dbe..165bc73 100644 --- a/include/configs/trimslice.h +++ b/include/configs/trimslice.h @@ -80,6 +80,7 @@ #define CONFIG_ENV_OFFSET (512 * 1024)
/* USB Host support */ +#define CONFIG_USB_MAX_CONTROLLER_COUNT 3 #define CONFIG_USB_EHCI #define CONFIG_USB_EHCI_TEGRA #define CONFIG_USB_STORAGE