From: Roger Quadros <rogerq@ti.com>
To: Kishon Vijay Abraham I <kishon@ti.com>, Rob Herring <robh+dt@kernel.org>
Cc: <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 4/4] phy: ti: Add a new SERDES driver for TI's AM654x SoC
Date: Thu, 7 Feb 2019 13:16:12 +0200 [thread overview]
Message-ID: <5C5C137C.2040109@ti.com> (raw)
In-Reply-To: <20190206110753.28738-5-kishon@ti.com>
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@ti.com: Fix boot lockup caused by accessing a structure member
> (hw->init) allocated in stack of probe() and accessed in get_parent]
> [rogerq@ti.com: Fix "Failed to find the parent" warnings]
> Signed-off-by: Roger Quadros <rogerq@ti.com>
> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
> ---
> 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@ti.com>
> + */
> +
> +#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
next prev parent reply other threads:[~2019-02-07 11:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-06 11:07 [PATCH v2 0/4] PHY: Add support for SERDES in TI's AM654 platform Kishon Vijay Abraham I
2019-02-06 11:07 ` [PATCH v2 1/4] phy: core: Add *release* phy_ops invoked when the consumer relinquishes PHY Kishon Vijay Abraham I
2019-02-07 10:55 ` Roger Quadros
2019-02-06 11:07 ` [PATCH v2 2/4] phy: core: Invoke pm_runtime_get_*/pm_runtime_put_* before invoking reset callback Kishon Vijay Abraham I
2019-02-06 11:07 ` [PATCH v2 3/4] dt-bindings: phy: ti: Add dt binding documentation for SERDES in AM654x SoC Kishon Vijay Abraham I
2019-02-07 11:26 ` Roger Quadros
2019-02-07 12:19 ` Kishon Vijay Abraham I
2019-02-07 14:22 ` Roger Quadros
2019-02-08 5:05 ` Kishon Vijay Abraham I
2019-02-18 19:46 ` Rob Herring
2019-02-06 11:07 ` [PATCH v2 4/4] phy: ti: Add a new SERDES driver for TI's " Kishon Vijay Abraham I
2019-02-07 11:16 ` Roger Quadros [this message]
2019-02-19 13:25 ` Roger Quadros
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