From: Ibai Erkiaga <ibai.erkiaga-elo...@xilinx.com>
zynqmp-power driver for ZynqMP to handle the communication with the PMU
firmware. Firmware driver just probes subnodes and power driver handles
communication with PMU using the IPI mailbox driver.
Signed-off-by: Ibai Erkiaga <ibai.erkiaga-elo...@xilinx.com>
Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---
drivers/firmware/Kconfig | 2 ++
drivers/firmware/firmware-zynqmp.c | 40 ++++++++++++++++++++++++++++++
2 files changed, 42 insertions(+)
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index b70a2063551c..9596ec16c7f7 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -30,6 +30,8 @@ config TI_SCI_PROTOCOL
config ZYNQMP_FIRMWARE
bool "ZynqMP Firmware interface"
select FIRMWARE
+ select ZYNQMP_IPI
+ select DM_MAILBOX
help
Firmware interface driver is used by different
drivers to communicate with the firmware for
diff --git a/drivers/firmware/firmware-zynqmp.c
b/drivers/firmware/firmware-zynqmp.c
index 6644a7166ca0..b0930447b988 100644
--- a/drivers/firmware/firmware-zynqmp.c
+++ b/drivers/firmware/firmware-zynqmp.c
@@ -1,6 +1,46 @@
// SPDX-License-Identifier: GPL-2.0
+/*
+ * Xilinx Zynq MPSoC Firmware driver
+ *
+ * Copyright (C) 2018-2019 Xilinx, Inc.
+ */
+#include <common.h>
#include <dm.h>
+#include <mailbox.h>
+#include <asm/arch/sys_proto.h>
+
+struct zynqmp_power {
+ struct mbox_chan tx_chan;
+ struct mbox_chan rx_chan;
+} zynqmp_power;
+
+static int zynqmp_power_probe(struct udevice *dev)
+{
+ int ret = 0;
+
+ debug("%s, (dev=%p)\n", __func__, dev);
+
+ ret |= mbox_get_by_name(dev, "tx", &zynqmp_power.tx_chan);
+ ret |= mbox_get_by_name(dev, "rx", &zynqmp_power.rx_chan);
+
+ if (ret)
+ debug("%s, cannot get mailboxes\n", __func__);
+
+ return ret;
+};
+
+static const struct udevice_id zynqmp_power_ids[] = {
+ { .compatible = "xlnx,zynqmp-power" },
+ { }
+};
+
+U_BOOT_DRIVER(zynqmp_power) = {
+ .name = "zynqmp_power",
+ .id = UCLASS_FIRMWARE,
+ .of_match = zynqmp_power_ids,
+ .probe = zynqmp_power_probe,
+};
static const struct udevice_id zynqmp_firmware_ids[] = {
{ .compatible = "xlnx,zynqmp-firmware" },
--
2.17.1
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