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52 lines
2.0 KiB
Diff
52 lines
2.0 KiB
Diff
From 6597af4e4835ec0709638d48f73c11b5c624790f Mon Sep 17 00:00:00 2001
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From: Al Cooper <alcooperx@gmail.com>
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Date: Fri, 3 Jan 2020 13:18:01 -0500
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Subject: [PATCH] phy: usb: Put USB phys into IDDQ on suspend to save power in
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S2 mode
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Currently the Phy driver will put the USB phys into the max
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power saving mode (IDDQ) when there is no corresponding XHCI, EHCI
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or OHCI client (through rmmod, unbind or if the driver is not
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builtin). This change will also put the Phys into IDDQ mode
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on suspend so that S2 will get the additional power savings.
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Signed-off-by: Al Cooper <alcooperx@gmail.com>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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---
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drivers/phy/broadcom/phy-brcm-usb-init.c | 2 --
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drivers/phy/broadcom/phy-brcm-usb.c | 11 +++++++++--
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2 files changed, 9 insertions(+), 4 deletions(-)
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--- a/drivers/phy/broadcom/phy-brcm-usb-init.c
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+++ b/drivers/phy/broadcom/phy-brcm-usb-init.c
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@@ -1002,8 +1002,6 @@ void brcm_usb_uninit_common(struct brcm_
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void brcm_usb_uninit_eohci(struct brcm_usb_init_params *params)
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{
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- if (USB_CTRL_MASK_FAMILY(params, USB_PM, USB20_HC_RESETB))
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- USB_CTRL_UNSET_FAMILY(params, USB_PM, USB20_HC_RESETB);
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}
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void brcm_usb_uninit_xhci(struct brcm_usb_init_params *params)
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--- a/drivers/phy/broadcom/phy-brcm-usb.c
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+++ b/drivers/phy/broadcom/phy-brcm-usb.c
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@@ -381,8 +381,15 @@ static int brcm_usb_phy_suspend(struct d
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struct brcm_usb_phy_data *priv = dev_get_drvdata(dev);
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if (priv->init_count) {
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- clk_disable_unprepare(priv->usb_20_clk);
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- clk_disable_unprepare(priv->usb_30_clk);
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+ if (priv->phys[BRCM_USB_PHY_3_0].inited)
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+ brcm_usb_uninit_xhci(&priv->ini);
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+ if (priv->phys[BRCM_USB_PHY_2_0].inited)
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+ brcm_usb_uninit_eohci(&priv->ini);
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+ brcm_usb_uninit_common(&priv->ini);
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+ if (priv->phys[BRCM_USB_PHY_3_0].inited)
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+ clk_disable_unprepare(priv->usb_30_clk);
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+ if (priv->phys[BRCM_USB_PHY_2_0].inited)
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+ clk_disable_unprepare(priv->usb_20_clk);
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}
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return 0;
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}
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