Hi, On 06/02/19 13:07, Kishon Vijay Abraham I wrote: > Add a new SERDES driver for TI's AM654x SoC which configures > the SERDES only for PCIe. Support fo USB3 will be added later. > > SERDES in am654x has three input clocks (left input, externel reference > clock and right input) and two output clocks (left output and right > output) in addition to a PLL mux clock which the SERDES uses for Clock > Multiplier Unit (CMU refclock). > > The PLL mux clock can select from one of the three input clocks. > The right output can select between left input and external reference > clock while the left output can select between the right input and > external reference clock. > > The driver has support to select PLL mux and left/right output mux as > specified in device tree. > > [rogerq@xxxxxx: Fix boot lockup caused by accessing a structure member > (hw->init) allocated in stack of probe() and accessed in get_parent] > [rogerq@xxxxxx: Fix "Failed to find the parent" warnings] > Signed-off-by: Roger Quadros <rogerq@xxxxxx> > Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx> > --- > drivers/phy/ti/Kconfig | 11 + > drivers/phy/ti/Makefile | 1 + > drivers/phy/ti/phy-am654-serdes.c | 539 ++++++++++++++++++++++++++++++ > 3 files changed, 551 insertions(+) > create mode 100644 drivers/phy/ti/phy-am654-serdes.c > > diff --git a/drivers/phy/ti/Kconfig b/drivers/phy/ti/Kconfig > index f137e0107764..6357c32de115 100644 > --- a/drivers/phy/ti/Kconfig > +++ b/drivers/phy/ti/Kconfig > @@ -20,6 +20,17 @@ config PHY_DM816X_USB > help > Enable this for dm816x USB to work. > > +config PHY_AM654_SERDES > + tristate "TI AM654 SERDES support" > + depends on OF && ARCH_K3 || COMPILE_TEST > + select GENERIC_PHY > + select MULTIPLEXER > + select REGMAP_MMIO > + select MUX_MMIO > + help > + This option enables support for TI AM654 SerDes PHY used for > + PCIe. > + > config OMAP_CONTROL_PHY > tristate "OMAP CONTROL PHY Driver" > depends on ARCH_OMAP2PLUS || COMPILE_TEST > diff --git a/drivers/phy/ti/Makefile b/drivers/phy/ti/Makefile > index bea8f25a137a..bff901eb0ecc 100644 > --- a/drivers/phy/ti/Makefile > +++ b/drivers/phy/ti/Makefile > @@ -6,4 +6,5 @@ obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o > obj-$(CONFIG_TI_PIPE3) += phy-ti-pipe3.o > obj-$(CONFIG_PHY_TUSB1210) += phy-tusb1210.o > obj-$(CONFIG_TWL4030_USB) += phy-twl4030-usb.o > +obj-$(CONFIG_PHY_AM654_SERDES) += phy-am654-serdes.o > obj-$(CONFIG_PHY_TI_GMII_SEL) += phy-gmii-sel.o > diff --git a/drivers/phy/ti/phy-am654-serdes.c b/drivers/phy/ti/phy-am654-serdes.c > new file mode 100644 > index 000000000000..dfbd2d48503d > --- /dev/null > +++ b/drivers/phy/ti/phy-am654-serdes.c > @@ -0,0 +1,539 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/** > + * PCIe SERDES driver for AM654x SoC > + * > + * Copyright (C) 2018 Texas Instruments 2018-2019. > + * Author: Kishon Vijay Abraham I <kishon@xxxxxx> > + */ > + > +#include <dt-bindings/phy/phy.h> > +#include <linux/clk.h> > +#include <linux/clk-provider.h> > +#include <linux/delay.h> > +#include <linux/io.h> > +#include <linux/module.h> > +#include <linux/mux/consumer.h> > +#include <linux/of_address.h> > +#include <linux/of_device.h> > +#include <linux/phy/phy.h> > +#include <linux/platform_device.h> > +#include <linux/pm_runtime.h> > +#include <linux/regmap.h> > +#include <linux/slab.h> > +#include <linux/mfd/syscon.h> > + <snip> cheers, -roger -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
