sunxi: common VBUS detection logic in usbc

[u-boot] / drivers / usb / musb-new / musb_uboot.c

diff --git a/drivers/usb/musb-new/musb_uboot.c b/drivers/usb/musb-new/musb_uboot.c
index 6e58ddf02cc34b67b4550b9f752d5a00c2d0615c..51fb3fd7e2ecd75f7a55d68ab688f8e0883c6a86 100644 (file)
--- a/drivers/usb/musb-new/musb_uboot.c
+++ b/drivers/usb/musb-new/musb_uboot.c
@@ -1,5 +1,8 @@
 #include <common.h>
 #include <watchdog.h>
+#ifdef CONFIG_ARCH_SUNXI
+#include <asm/arch/usbc.h>
+#endif
 #include <asm/errno.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
@@ -186,8 +189,19 @@ void usb_reset_root_port(void)
        power &= 0xf0;
        musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
        mdelay(50);
+#ifdef CONFIG_ARCH_SUNXI
+       /*
+        * sunxi phy has a bug and it will wrongly detect high speed squelch
+        * when clearing reset on low-speed devices, temporary disable
+        * squelch detection to work around this.
+        */
+       sunxi_usbc_enable_squelch_detect(0, 0);
+#endif
        power = musb_readb(mbase, MUSB_POWER);
        musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
+#ifdef CONFIG_ARCH_SUNXI
+       sunxi_usbc_enable_squelch_detect(0, 1);
+#endif
        host->isr(0, host);
        host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
                        USB_SPEED_HIGH :