This is a note to let you know that I've just added the patch titled
phy: phy-brcm-usb-init: Power down USB 3.0 PHY when XHCI disabled
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: phy-phy-brcm-usb-init-power-down-usb-3.0-phy-when-xhci-disabled.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From cd6f769fdea7ff7d77a6cc97658c60ca0b836d0e Mon Sep 17 00:00:00 2001
From: Al Cooper al.cooper@broadcom.com Date: Wed, 27 Dec 2017 14:28:50 -0500 Subject: phy: phy-brcm-usb-init: Power down USB 3.0 PHY when XHCI disabled
From: Al Cooper al.cooper@broadcom.com
commit cd6f769fdea7ff7d77a6cc97658c60ca0b836d0e upstream.
Set PHY3_IDDQ_OVERRIDE in the xhci uninit routine. This will save additional power when the XHCI driver is not enabled.
Fixes: 49859e55e364 ("phy: usb: phy-brcm-usb: Add Broadcom STB USB phy driver") Signed-off-by: Al Cooper alcooperx@gmail.com Acked-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: Kishon Vijay Abraham I kishon@ti.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/phy/broadcom/phy-brcm-usb-init.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/phy/broadcom/phy-brcm-usb-init.c +++ b/drivers/phy/broadcom/phy-brcm-usb-init.c @@ -73,6 +73,7 @@ #define USB_CTRL_USB30_CTL1_USB3_IPP_MASK 0x20000000 /* option */ #define USB_CTRL_USB30_PCTL 0x70 #define USB_CTRL_USB30_PCTL_PHY3_SOFT_RESETB_MASK 0x00000002 +#define USB_CTRL_USB30_PCTL_PHY3_IDDQ_OVERRIDE_MASK 0x00008000 #define USB_CTRL_USB30_PCTL_PHY3_SOFT_RESETB_P1_MASK 0x00020000 #define USB_CTRL_USB_DEVICE_CTL1 0x90 #define USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK 0x00000003 /* option */ @@ -999,6 +1000,7 @@ void brcm_usb_uninit_eohci(struct brcm_u void brcm_usb_uninit_xhci(struct brcm_usb_init_params *params) { brcmusb_xhci_soft_reset(params, 1); + USB_CTRL_SET(params->ctrl_regs, USB30_PCTL, PHY3_IDDQ_OVERRIDE); }
void brcm_usb_set_family_map(struct brcm_usb_init_params *params)
Patches currently in stable-queue which might be from al.cooper@broadcom.com are
queue-4.15/phy-phy-brcm-usb-init-power-down-usb-3.0-phy-when-xhci-disabled.patch queue-4.15/phy-phy-brcm-usb-init-drd-mode-can-cause-crash-on-startup.patch queue-4.15/phy-phy-brcm-usb-init-some-low-speed-keyboards-fail-on-7271.patch