diff options
| author | Ibai Erkiaga <ibai.erkiaga-elorza@xilinx.com> | 2019-09-27 12:51:41 +0200 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2019-10-08 09:55:11 +0200 |
| commit | 1327d1678bd2d1897fb321465e24a05466c80f16 (patch) | |
| tree | 045602ee418a4cdb196b0d4fa2fd85e03b95237d /drivers/firmware/firmware-zynqmp.c | |
| parent | 660b0c77d81603c7911a3e5c024d646a801cd0ac (diff) | |
firmware: zynqmp: Add zynqmp-power support
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-elorza@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers/firmware/firmware-zynqmp.c')
| -rw-r--r-- | drivers/firmware/firmware-zynqmp.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c index 4077126581..5ed2b32c11 100644 --- a/drivers/firmware/firmware-zynqmp.c +++ b/drivers/firmware/firmware-zynqmp.c @@ -1,7 +1,54 @@ // SPDX-License-Identifier: GPL-2.0 +/* + * Xilinx Zynq MPSoC Firmware driver + * + * Copyright (C) 2018-2019 Xilinx, Inc. + */ +#include <common.h> #include <dm.h> +#if defined(CONFIG_ZYNQMP_IPI) +#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); + if (ret) { + debug("%s, cannot tx mailbox\n", __func__); + return ret; + } + + ret = mbox_get_by_name(dev, "rx", &zynqmp_power.rx_chan); + if (ret) + debug("%s, cannot rx mailbox\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, +}; +#endif + static const struct udevice_id zynqmp_firmware_ids[] = { { .compatible = "xlnx,zynqmp-firmware" }, { .compatible = "xlnx,versal-firmware"}, |