All of lore.kernel.org
 help / color / mirror / Atom feed
* [U-Boot] [PATCH 1/3] sunxi: Add INITIAL_USB_SCAN_DELAY Kconfig option
@ 2016-04-02 19:10 Hans de Goede
  2016-04-02 19:10 ` [U-Boot] [PATCH 2/3] sunxi: Set DCDC1 to 3.3V on the Sinovoip BPI M3 Hans de Goede
                   ` (2 more replies)
  0 siblings, 3 replies; 9+ messages in thread
From: Hans de Goede @ 2016-04-02 19:10 UTC (permalink / raw)
  To: u-boot

Some boards have on board usb devices which need longer then 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>
---
 arch/arm/mach-sunxi/usb_phy.c | 7 +++++++
 board/sunxi/Kconfig           | 9 +++++++++
 2 files changed, 16 insertions(+)

diff --git a/arch/arm/mach-sunxi/usb_phy.c b/arch/arm/mach-sunxi/usb_phy.c
index b258ce4..f9993d2 100644
--- a/arch/arm/mach-sunxi/usb_phy.c
+++ b/arch/arm/mach-sunxi/usb_phy.c
@@ -85,6 +85,8 @@ static struct sunxi_usb_phy {
 #endif
 };
 
+static int initial_usb_scan_delay = CONFIG_INITIAL_USB_SCAN_DELAY;
+
 static int get_vbus_gpio(int index)
 {
 	switch (index) {
@@ -269,6 +271,11 @@ void sunxi_usb_phy_power_on(int index)
 {
 	struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
 
+	if (initial_usb_scan_delay) {
+		mdelay(initial_usb_scan_delay);
+		initial_usb_scan_delay = 0;
+	}
+
 	phy->power_on_count++;
 	if (phy->power_on_count != 1)
 		return;
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 464fa0f..2b0d1df 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -312,6 +312,15 @@ config MMC_SUNXI_SLOT_EXTRA
 	slot or emmc on mmc1 - mmc3. Setting this to 1, 2 or 3 will enable
 	support for this.
 
+config INITIAL_USB_SCAN_DELAY
+	int "delay initial usb scan by x ms to allow builtin devices to init"
+	default 0
+	---help---
+	Some boards have on board usb devices which need longer then the
+	USB spec's 1 second to connect from board powerup. Set this config
+	option to a non 0 value to add an extra delay before the first usb
+	bus scan.
+
 config USB0_VBUS_PIN
 	string "Vbus enable pin for usb0 (otg)"
 	default ""
-- 
2.7.2

^ permalink raw reply related	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2016-04-09 11:59 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-04-02 19:10 [U-Boot] [PATCH 1/3] sunxi: Add INITIAL_USB_SCAN_DELAY Kconfig option Hans de Goede
2016-04-02 19:10 ` [U-Boot] [PATCH 2/3] sunxi: Set DCDC1 to 3.3V on the Sinovoip BPI M3 Hans de Goede
2016-04-05  9:42   ` Ian Campbell
2016-04-02 19:10 ` [U-Boot] [PATCH 3/3] sunxi: Enable usb ports " Hans de Goede
2016-04-05  9:44   ` Ian Campbell
2016-04-05  9:51     ` Hans de Goede
2016-04-05 10:44       ` Ian Campbell
2016-04-09 11:59         ` Hans de Goede
2016-04-05  9:42 ` [U-Boot] [PATCH 1/3] sunxi: Add INITIAL_USB_SCAN_DELAY Kconfig option Ian Campbell

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.