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usb/mtu3: power down device ip at setup
Originally, when dr_mode is USB_DR_MODE_HOST, it didn't power down device ip, so host ip sleep will fail at ssusb_host_disable. Power down device ip at ssusb_host_setup. Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Hsin-Yi, Wang <hsinyi@chromium.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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@ -200,6 +200,14 @@ static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb)
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mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);
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udelay(1);
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mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST);
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/*
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* device ip may be powered on in firmware/BROM stage before entering
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* kernel stage;
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* power down device ip, otherwise ip-sleep will fail when working as
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* host only mode
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*/
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mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
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}
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/* ignore the error if the clock does not exist */
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