bcm4908: backport brcmstb USB PHY driver changes

This includes BCM4908 support

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 51 insertions, 0 deletions

diff --git a/target/linux/bcm4908/patches-5.4/084-v5.6-0003-phy-usb-Put-USB-phys-into-IDDQ-on-suspend-to-save-po.patch b/target/linux/bcm4908/patches-5.4/084-v5.6-0003-phy-usb-Put-USB-phys-into-IDDQ-on-suspend-to-save-po.patch
new file mode 100644
index 0000000000..356e305460
--- /dev/null
+++ b/target/linux/bcm4908/patches-5.4/084-v5.6-0003-phy-usb-Put-USB-phys-into-IDDQ-on-suspend-to-save-po.patch
@@ -0,0 +1,51 @@
+From 6597af4e4835ec0709638d48f73c11b5c624790f Mon Sep 17 00:00:00 2001
+From: Al Cooper <alcooperx@gmail.com>
+Date: Fri, 3 Jan 2020 13:18:01 -0500
+Subject: [PATCH] phy: usb: Put USB phys into IDDQ on suspend to save power in
+ S2 mode
+
+Currently the Phy driver will put the USB phys into the max
+power saving mode (IDDQ) when there is no corresponding XHCI, EHCI
+or OHCI client (through rmmod, unbind or if the driver is not
+builtin). This change will also put the Phys into IDDQ mode
+on suspend so that S2 will get the additional power savings.
+
+Signed-off-by: Al Cooper <alcooperx@gmail.com>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
+---
+ drivers/phy/broadcom/phy-brcm-usb-init.c |  2 --
+ drivers/phy/broadcom/phy-brcm-usb.c      | 11 +++++++++--
+ 2 files changed, 9 insertions(+), 4 deletions(-)
+
+--- a/drivers/phy/broadcom/phy-brcm-usb-init.c
++++ b/drivers/phy/broadcom/phy-brcm-usb-init.c
+@@ -1002,8 +1002,6 @@ void brcm_usb_uninit_common(struct brcm_
+ 
+ void brcm_usb_uninit_eohci(struct brcm_usb_init_params *params)
+ {
+-	if (USB_CTRL_MASK_FAMILY(params, USB_PM, USB20_HC_RESETB))
+-		USB_CTRL_UNSET_FAMILY(params, USB_PM, USB20_HC_RESETB);
+ }
+ 
+ void brcm_usb_uninit_xhci(struct brcm_usb_init_params *params)
+--- a/drivers/phy/broadcom/phy-brcm-usb.c
++++ b/drivers/phy/broadcom/phy-brcm-usb.c
+@@ -381,8 +381,15 @@ static int brcm_usb_phy_suspend(struct d
+ 	struct brcm_usb_phy_data *priv = dev_get_drvdata(dev);
+ 
+ 	if (priv->init_count) {
+-		clk_disable_unprepare(priv->usb_20_clk);
+-		clk_disable_unprepare(priv->usb_30_clk);
++		if (priv->phys[BRCM_USB_PHY_3_0].inited)
++			brcm_usb_uninit_xhci(&priv->ini);
++		if (priv->phys[BRCM_USB_PHY_2_0].inited)
++			brcm_usb_uninit_eohci(&priv->ini);
++		brcm_usb_uninit_common(&priv->ini);
++		if (priv->phys[BRCM_USB_PHY_3_0].inited)
++			clk_disable_unprepare(priv->usb_30_clk);
++		if (priv->phys[BRCM_USB_PHY_2_0].inited)
++			clk_disable_unprepare(priv->usb_20_clk);
+ 	}
+ 	return 0;
+ }