u-boot.git/drivers/usb/dwc3, branch v2023.01

usb: dwc3: Drop support for "snps, ref-clock-period-ns" DT property

2022-11-27T14:34:56Z

Drop support for quickly deprecated DT property "snps,ref-clock-period-ns" to prevent its proliferation. Reviewed-by: Sean Anderson Signed-off-by: Marek Vasut

usb: dwc3: Program GFLADJ

2022-11-27T14:34:56Z

GUCTL.REFCLKPER can only account for clock frequencies with integer periods. To address this, program REFCLK_FLADJ with the relative error caused by period truncation. The formula given in the register reference has been rearranged to allow calculation based on rate (instead of period), and to allow for fixed-point arithmetic. Additionally, calculate a value for 240MHZDECR. This configures a simulated 240Mhz clock using a counter with one fractional bit (PLS1). This register is programmed only for versions >= 2.50a, since this is the check also used by commit db2be4e9e30c ("usb: dwc3: Add frame length adjustment quirk"). [ marek: Ported from Linux kernel commit 596c87856e08d ("usb: dwc3: Program GFLADJ") ] Reviewed-by: Sean Anderson Signed-off-by: Sean Anderson Signed-off-by: Marek Vasut # Port from Linux

usb: dwc3: Calculate REFCLKPER based on reference clock

2022-11-27T14:34:56Z

Instead of using a special property to determine the reference clock period, use the rate of the reference clock. When we have a legacy snps,ref-clock-period-ns property and no reference clock, use it instead. Fractional clocks are not currently supported, and will be dealt with in the next commit. [ marek: Ported from Linux kernel commit 5114c3ee24875 ("usb: dwc3: Calculate REFCLKPER based on reference clock") ] Reviewed-by: Sean Anderson Signed-off-by: Sean Anderson Signed-off-by: Marek Vasut # Port from Linux

usb: dwc3: reference clock period configuration

2022-11-27T14:34:56Z

Set reference clock period when it differs from dwc3 default hardware set. We could calculate clock period based on reference clock frequency. But this information is not always available. This is the case of PCI bus attached USB host. For that reason we use a custom property. Tested (USB2 only) on IPQ6010 SoC based board with 24 MHz reference clock while hardware default is 19.2 MHz. [ baruch: rewrite commit message; drop GFLADJ code; remove 'quirk-' from property name; mention tested hardware ] [ marek: Ported from Linux kernel commit 7bee318838890 ("usb: dwc3: reference clock period configuration") ] Reviewed-by: Sean Anderson Signed-off-by: Balaji Prakash J Signed-off-by: Baruch Siach Signed-off-by: Marek Vasut # Port from Linux

usb: dwc3: Cache ref_clk pointer in struct dwc3

2022-11-27T14:34:56Z

Cache ref_clk clock pointer in struct dwc3 . This is a preparatory patch for subsequent backports from Linux kernel which configure GFLADJ register content based on the ref_clk rate and therefore need access to the ref_clk pointer. It is possible to extract the clock pointer from existing clk_bulk list of already claimed clock, no need to call clk_get*() again. Reviewed-by: Sean Anderson Signed-off-by: Marek Vasut

usb: dwc3: add a SPL_USB_DWC3_GENERIC option for the dwc3 driver

2022-07-15T12:10:39Z

Suppress warnings when building the SPL without USB_DWC3_GENERIC Signed-off-by: Angus Ainslie

usb: dwc3: Add support to reset usb ULPI phy

2022-07-12T19:59:54Z

When usb PHY initialization is done, the PHY need to be reset. Signed-off-by: T Karthik Reddy Signed-off-by: Michal Simek

usb: dwc3: Fix non-usb3 configurations

2022-05-20T21:30:36Z

Missing nodes may also be signaled via -ENODATA. We need to check for that to prevent failing in non-usb3 setups. Furthermore, dev.phy must be NULL'ed in case usb3-phy was not found. Fixes: 142d50fbce7c ("usb: dwc3: Add support for usb3-phy PHY configuration") Signed-off-by: Jan Kiszka

Merge https://gitlab.denx.de/u-boot/custodians/u-boot-usb

2022-04-22T15:06:31Z

usb: dwc3: Add support for usb3-phy PHY configuration

2022-04-22T08:35:14Z

When usb3-phy label is found, PHY driver is called and serdes line is initialized. This is preparation for serdes/psgtr driver to configure GT lines based on description in DT. Signed-off-by: Michal Simek