From 1327d1678bd2d1897fb321465e24a05466c80f16 Mon Sep 17 00:00:00 2001 From: Ibai Erkiaga Date: Fri, 27 Sep 2019 12:51:41 +0200 Subject: [PATCH] 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 Signed-off-by: Michal Simek --- arch/arm/Kconfig | 2 ++ drivers/firmware/firmware-zynqmp.c | 47 ++++++++++++++++++++++++++++++ 2 files changed, 49 insertions(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 257a98d795..0c41bc3e5b 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -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 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 #include +#if defined(CONFIG_ZYNQMP_IPI) +#include +#include + +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"}, -- 2.25.1