[U-Boot] [PATCH] zynqmp: firmware: Add Xilinx ZynqMP firmware driver

[Michal Simek]

From: Rajan Vaja <rajan.vaja at xilinx.com>

Add simple ZynqMP firmware drive to populate child nodes under
zynqmp_firmware DT node.

Signed-off-by: Rajan Vaja <rajan.vaja at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 drivers/clk/Kconfig                |  1 +
 drivers/firmware/Kconfig           | 10 ++++++++++
 drivers/firmware/Makefile          |  1 +
 drivers/firmware/firmware-zynqmp.c | 15 +++++++++++++++
 4 files changed, 27 insertions(+)
 create mode 100644 drivers/firmware/firmware-zynqmp.c

diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 95fe0aea2ce8..305cbd96f165 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -113,6 +113,7 @@ config CLK_ZYNQ
 config CLK_ZYNQMP
 	bool "Enable clock driver support for ZynqMP"
 	depends on ARCH_ZYNQMP
+	select ZYNQMP_FIRMWARE
 	help
 	  This clock driver adds support for clock realted settings for
 	  ZynqMP platform.
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 873bc8c79679..b70a2063551c 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -26,3 +26,13 @@ config TI_SCI_PROTOCOL
 
 	  This protocol library is used by client drivers to use the features
 	  provided by the system controller.
+
+config ZYNQMP_FIRMWARE
+	bool "ZynqMP Firmware interface"
+	select FIRMWARE
+	help
+	  Firmware interface driver is used by different
+	  drivers to communicate with the firmware for
+	  various platform management services.
+	  Say yes to enable ZynqMP firmware interface driver.
+	  If in doubt, say N.
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 6c3e12968527..a0c250a473eb 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -2,3 +2,4 @@ obj-$(CONFIG_FIRMWARE)		+= firmware-uclass.o
 obj-$(CONFIG_$(SPL_)ARM_PSCI_FW)	+= psci.o
 obj-$(CONFIG_TI_SCI_PROTOCOL)	+= ti_sci.o
 obj-$(CONFIG_SANDBOX)		+= firmware-sandbox.o
+obj-$(CONFIG_ZYNQMP_FIRMWARE)	+= firmware-zynqmp.o
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c
new file mode 100644
index 000000000000..b36eda1b04be
--- /dev/null
+++ b/drivers/firmware/firmware-zynqmp.c
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dm.h>
+
+static const struct udevice_id zynqmp_firmware_ids[] = {
+	{ .compatible = "xlnx,zynqmp-firmware" },
+	{ }
+};
+
+U_BOOT_DRIVER(zynqmp_firmware) = {
+	.id = UCLASS_FIRMWARE,
+	.name = "zynqmp-firmware",
+	.probe = dm_scan_fdt_dev,
+	.of_match = zynqmp_firmware_ids,
+};
-- 
2.17.1