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Diffstat (limited to 'board/freescale/mx6qsabreauto/mx6qsabreauto.c')
-rw-r--r--board/freescale/mx6qsabreauto/mx6qsabreauto.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/board/freescale/mx6qsabreauto/mx6qsabreauto.c b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
index 0dc0160..42ae6fa 100644
--- a/board/freescale/mx6qsabreauto/mx6qsabreauto.c
+++ b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
@@ -27,6 +27,7 @@
#include <asm/arch/mxc_hdmi.h>
#include <asm/imx-common/video.h>
#include <asm/arch/crm_regs.h>
+#include <pca953x.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -116,6 +117,44 @@ static iomux_v3_cfg_t const port_exp[] = {
MX6_PAD_SD2_DAT0__GPIO1_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
+/*Define for building port exp gpio, pin starts from 0*/
+#define PORTEXP_IO_NR(chip, pin) \
+ ((chip << 5) + pin)
+
+/*Get the chip addr from a ioexp gpio*/
+#define PORTEXP_IO_TO_CHIP(gpio_nr) \
+ (gpio_nr >> 5)
+
+/*Get the pin number from a ioexp gpio*/
+#define PORTEXP_IO_TO_PIN(gpio_nr) \
+ (gpio_nr & 0x1f)
+
+static int port_exp_direction_output(unsigned gpio, int value)
+{
+ int ret;
+
+ i2c_set_bus_num(2);
+ ret = i2c_probe(PORTEXP_IO_TO_CHIP(gpio));
+ if (ret)
+ return ret;
+
+ ret = pca953x_set_dir(PORTEXP_IO_TO_CHIP(gpio),
+ (1 << PORTEXP_IO_TO_PIN(gpio)),
+ (PCA953X_DIR_OUT << PORTEXP_IO_TO_PIN(gpio)));
+
+ if (ret)
+ return ret;
+
+ ret = pca953x_set_val(PORTEXP_IO_TO_CHIP(gpio),
+ (1 << PORTEXP_IO_TO_PIN(gpio)),
+ (value << PORTEXP_IO_TO_PIN(gpio)));
+
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
static void setup_iomux_enet(void)
{
imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
@@ -361,3 +400,57 @@ int checkboard(void)
return 0;
}
+
+#ifdef CONFIG_USB_EHCI_MX6
+#define USB_HOST1_PWR PORTEXP_IO_NR(0x32, 7)
+#define USB_OTG_PWR PORTEXP_IO_NR(0x34, 1)
+
+iomux_v3_cfg_t const usb_otg_pads[] = {
+ MX6_PAD_ENET_RX_ER__USB_OTG_ID | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+int board_ehci_hcd_init(int port)
+{
+ switch (port) {
+ case 0:
+ imx_iomux_v3_setup_multiple_pads(usb_otg_pads,
+ ARRAY_SIZE(usb_otg_pads));
+
+ /*
+ * Set daisy chain for otg_pin_id on 6q.
+ * For 6dl, this bit is reserved.
+ */
+ imx_iomux_set_gpr_register(1, 13, 1, 0);
+ break;
+ case 1:
+ break;
+ default:
+ printf("MXC USB port %d not yet supported\n", port);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+int board_ehci_power(int port, int on)
+{
+ switch (port) {
+ case 0:
+ if (on)
+ port_exp_direction_output(USB_OTG_PWR, 1);
+ else
+ port_exp_direction_output(USB_OTG_PWR, 0);
+ break;
+ case 1:
+ if (on)
+ port_exp_direction_output(USB_HOST1_PWR, 1);
+ else
+ port_exp_direction_output(USB_HOST1_PWR, 0);
+ break;
+ default:
+ printf("MXC USB port %d not yet supported\n", port);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+#endif