kernel/linux.git/drivers/phy/broadcom/phy-brcm-usb-init.h, branch v6.18.15

phy: usb: add support for bcm74110

2025-04-11T07:21:13+00:00

bcm74110 adds a freerun utmi/ref clock that saves further power during suspend states. A tune is also necessary to pass USB compliance test. Signed-off-by: Justin Chen Reviewed-by: Florian Fainelli Link: https://lore.kernel.org/r/20250402185159.2976920-3-justin.chen@broadcom.com Signed-off-by: Vinod Koul

phy: usb: Turn off phy when port is in suspend

2023-06-21T12:13:27+00:00

The COMMONONN bit turns off the PHY when the host controller puts it into suspend state. This can happen during the following... - Nothing is connected to the port - The host controller goes into low power mode whatever due to auto suspend or system suspend. With COMMONONN we also must unset U2_FREECLK_EXISTS since the UTMI clock is fed by the PHY. With these changes we see a power savings of ~12mW when port is in suspend. Reviewed-by: Florian Fainelli Signed-off-by: Justin Chen Link: https://lore.kernel.org/r/1686859578-45242-2-git-send-email-justin.chen@broadcom.com Signed-off-by: Vinod Koul

phy: usb: Fix clock imbalance for suspend/resume

2022-11-07T04:50:25+00:00

We should be disabling clocks when wake from USB is not needed. Since this wasn't done, we had a clock imbalance since clocks were always being enabled on resume. Fixes: ae532b2b7aa5 ("phy: usb: Add "wake on" functionality for newer Synopsis XHCI controllers") Fixes: b0c0b66c0b43 ("phy: usb: Add support for wake and USB low power mode for 7211 S2/S5") Signed-off-by: Justin Chen Acked-by: Florian Fainelli Link: https://lore.kernel.org/r/1665005418-15807-7-git-send-email-justinpopo6@gmail.com Signed-off-by: Vinod Koul

phy: usb: Improve port mode selection

2022-11-05T07:42:55+00:00

Split port modes into two different variables. Supported port modes is what the hardware supports. While port mode is how the hardware is currently configured and can be dynamically changed through the sysfs. We initialize all supported port modes on init even though the port mode may not be selected because we cannot guarantee the downstream interface from the phy will be active or not. This also fixes an issue where port modes selected via sysfs were not being saved through suspend/resume. Signed-off-by: Justin Chen Acked-by: Florian Fainelli Link: https://lore.kernel.org/r/1665005418-15807-2-git-send-email-justinpopo6@gmail.com Signed-off-by: Vinod Koul

phy: phy-brcm-usb: fixup BCM4908 support

2022-02-25T09:02:37+00:00

Just like every other family BCM4908 should get its own enum value. That is required to properly handle it in chipset conditional code. The real change is excluding BCM4908 from the PLL reprogramming code (see brcmusb_usb3_pll_54mhz()). I'm not sure what's the BCM4908 reference clock frequency but: 1. BCM4908 custom driver from Broadcom's SDK doesn't reprogram PLL 2. Doing that in Linux driver stopped PHY handling some USB 3.0 devices This change makes USB 3.0 PHY recognize e.g.: 1. 04e8:6860 - Samsung Electronics Co., Ltd Galaxy series, misc. (MTP mode) 2. 1058:259f - Western Digital My Passport 259F Broadcom's STB SoCs come with a set of SUN_TOP_CTRL_* registers that allow reading chip family and product ids. Such a block & register is missing on BCM4908 so this commit introduces "compatible" string specific binding. Fixes: 4b402fa8e0b7 ("phy: phy-brcm-usb: support PHY on the BCM4908") Signed-off-by: Rafał Miłecki Reviewed-by: Florian Fainelli Link: https://lore.kernel.org/r/20220218172459.10431-1-zajec5@gmail.com Signed-off-by: Vinod Koul

phy: usb: Fix misuse of IS_ENABLED

2021-05-14T12:10:37+00:00

While IS_ENABLED() is perfectly fine for CONFIG_* symbols, it is not for other symbols such as __BIG_ENDIAN that is provided directly by the compiler. Switch to use CONFIG_CPU_BIG_ENDIAN instead of __BIG_ENDIAN. Signed-off-by: Chen Li Reviewed-by: Al Cooper Acked-by: Florian Fainelli Fixes: 94583a41047e ("phy: usb: Restructure in preparation for adding 7216 USB support") Link: https://lore.kernel.org/r/87czuggpra.wl-chenli@uniontech.com Signed-off-by: Vinod Koul

phy: usb: Add support for wake and USB low power mode for 7211 S2/S5

2020-01-08T07:28:06+00:00

Add support for 7211 USB wake. Disable all possible 7211 USB logic for S2/S5 if USB wake is not enabled. On the 7211, the XHCI wake signal was not connected properly and only goes to the USB1_USB1_CTRL_TP_DIAG1 diagonstic register. The workaround is to have VPU code running that polls for the proper bit in the DIAG register and to wake the system when the bit is asserted. Signed-off-by: Al Cooper Reviewed-by: Florian Fainelli Signed-off-by: Kishon Vijay Abraham I

phy: usb: bdc: Fix occasional failure with BDC on 7211

2020-01-08T07:28:06+00:00

The BDC "Read Transaction Size" needs to be changed from 1024 bytes to 256 bytes to prevent occasional transaction failures. Signed-off-by: Al Cooper Reviewed-by: Florian Fainelli Signed-off-by: Kishon Vijay Abraham I

phy: usb: Add support for new Synopsys USB controller on the 7211b0

2020-01-08T07:28:06+00:00

The 7211b0 has added the STB XHCI Synopsys controller and it will be used instead of the RPi based DWC USB controller. The new Synopsys XHCI controller core is the same one that is used on the 7216, but because of the way the STB USB PHY is used on both the A0 and B0, some of the PHY control is different. Signed-off-by: Al Cooper Reviewed-by: Florian Fainelli Signed-off-by: Kishon Vijay Abraham I

phy: usb: Add support for new Synopsys USB controller on the 7216

2020-01-08T07:28:06+00:00

The 7216 has the new USB XHCI controller from Synopsys. While this new controller and the PHY are similar to the STB versions, the major differences are: - Many of the registers and fields in the CTRL block have been removed or changed. - A new set of Synopsys control registers, BCHP_USB_XHCI_GBL, were added. - MDIO functionality has been replaced with direct access registers in the BCHP_USB_XHCI_GBL block. - Power up PHY defaults that had to be changed by MDIO in previous chips will now power up with the correct defaults. A new init module was created for this new Synopsys USB controller. A new compatible string was added and the driver will dispatch into one of two init modules based on it. A "reg-names" field was added so the driver can more easily get optional registers. A DT bindings document was also added for this driver. Signed-off-by: Al Cooper Reviewed-by: Florian Fainelli Signed-off-by: Kishon Vijay Abraham I