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sunxi: Add INITIAL_USB_SCAN_DELAY Kconfig option
Some boards have on board usb devices which need longer than the USB spec's 1 second to connect from board powerup. Add a config option which when non 0 adds an extra delay before the first usb bus scan. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
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2 changed files with 16 additions and 0 deletions
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@ -85,6 +85,8 @@ static struct sunxi_usb_phy {
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#endif
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};
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static int initial_usb_scan_delay = CONFIG_INITIAL_USB_SCAN_DELAY;
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static int get_vbus_gpio(int index)
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{
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switch (index) {
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@ -269,6 +271,11 @@ void sunxi_usb_phy_power_on(int index)
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{
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struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
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if (initial_usb_scan_delay) {
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mdelay(initial_usb_scan_delay);
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initial_usb_scan_delay = 0;
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}
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phy->power_on_count++;
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if (phy->power_on_count != 1)
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return;
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@ -312,6 +312,15 @@ config MMC_SUNXI_SLOT_EXTRA
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slot or emmc on mmc1 - mmc3. Setting this to 1, 2 or 3 will enable
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support for this.
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config INITIAL_USB_SCAN_DELAY
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int "delay initial usb scan by x ms to allow builtin devices to init"
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default 0
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---help---
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Some boards have on board usb devices which need longer than the
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USB spec's 1 second to connect from board powerup. Set this config
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option to a non 0 value to add an extra delay before the first usb
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bus scan.
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config USB0_VBUS_PIN
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string "Vbus enable pin for usb0 (otg)"
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default ""
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