phy: add a NO-OP phy driver
This driver is used to stub PHY operations in a driver (USB, SATA).
This is useful when the 'client' driver (USB, SATA, ...) uses the PHY
framework and there is no actual PHY harwdare to drive.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 7841554..98f2a1b 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -41,6 +41,24 @@
This select a dummy sandbox PHY driver. It used only to implement
the unit tests for the phy framework
+config NOP_PHY
+ bool "NOP PHY driver"
+ depends on PHY
+ help
+ Support for a no-op PHY driver (stubbed PHY driver).
+
+ This is useful when a driver uses the PHY framework but no real PHY
+ hardware exists.
+
+config SPL_NOP_PHY
+ bool "NOP PHY driver in SPL"
+ depends on SPL_PHY
+ help
+ Support for a no-op PHY driver (stubbed PHY driver) in the SPL.
+
+ This is useful when a driver uses the PHY framework but no real PHY
+ hardware exists.
+
config PIPE3_PHY
bool "Support omap's PIPE3 PHY"
depends on PHY && ARCH_OMAP2PLUS
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 6ce96d2..ab56c46 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -6,5 +6,6 @@
#
obj-$(CONFIG_$(SPL_)PHY) += phy-uclass.o
+obj-$(CONFIG_$(SPL_)NOP_PHY) += nop-phy.o
obj-$(CONFIG_PHY_SANDBOX) += sandbox-phy.o
obj-$(CONFIG_$(SPL_)PIPE3_PHY) += ti-pipe3-phy.o
diff --git a/drivers/phy/nop-phy.c b/drivers/phy/nop-phy.c
new file mode 100644
index 0000000..2201cc3
--- /dev/null
+++ b/drivers/phy/nop-phy.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
+ * Written by Jean-Jacques Hiblot <jjhiblot@ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/device.h>
+#include <generic-phy.h>
+
+static const struct udevice_id nop_phy_ids[] = {
+ { .compatible = "nop-phy" },
+ { }
+};
+
+static struct phy_ops nop_phy_ops = {
+};
+
+U_BOOT_DRIVER(nop_phy) = {
+ .name = "nop_phy",
+ .id = UCLASS_PHY,
+ .of_match = nop_phy_ids,
+ .ops = &nop_phy_ops,
+};