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firmware: zynqmp: Add zynqmp-power support

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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>
This commit is contained in:
Ibai Erkiaga 2019-09-27 12:51:41 +02:00 committed by Michal Simek
parent 660b0c77d8
commit 1327d1678b
2 changed files with 49 additions and 0 deletions
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2
arch/arm/Kconfig
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@ -1051,6 +1051,7 @@ config ARCH_ZYNQMP
select CLK
select DM
select DM_ETH if NET
select DM_MAILBOX
select DM_MMC if MMC
select DM_SERIAL
select DM_SPI if SPI
@ -1061,6 +1062,7 @@ config ARCH_ZYNQMP
select SPL_CLK if SPL
select SPL_SEPARATE_BSS if SPL
select SUPPORT_SPL
select ZYNQMP_IPI
imply BOARD_LATE_INIT
imply CMD_DM
imply FAT_WRITE

47
drivers/firmware/firmware-zynqmp.c
View file

@ -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"},