diff options
Diffstat (limited to 'drivers/firmware/firmware-zynqmp.c')
| -rw-r--r-- | drivers/firmware/firmware-zynqmp.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c index 8ea15c7ed3..dfad798a2e 100644 --- a/drivers/firmware/firmware-zynqmp.c +++ b/drivers/firmware/firmware-zynqmp.c @@ -8,6 +8,7 @@ #include <common.h> #include <cpu_func.h> #include <dm.h> +#include <dm/device_compat.h> #include <dm/lists.h> #include <log.h> #include <zynqmp_firmware.h> @@ -290,10 +291,31 @@ int zynqmp_pmufw_load_config_object(const void *cfg_obj, size_t size) static int zynqmp_power_probe(struct udevice *dev) { + struct udevice *ipi_dev; + ofnode ipi_node; int ret; debug("%s, (dev=%p)\n", __func__, dev); + /* + * Probe all IPI parent node driver. It is important to have IPI + * devices available when requested by mbox_get_by* API. + * If IPI device isn't available, then mailbox request fails and + * that causes system boot failure. + * To avoid this make sure all IPI parent drivers are probed here, + * and IPI parent driver binds each child node to mailbox driver. + * This way mbox_get_by_* API will have correct mailbox device + * driver probed. + */ + ofnode_for_each_compatible_node(ipi_node, "xlnx,zynqmp-ipi-mailbox") { + ret = uclass_get_device_by_ofnode(UCLASS_NOP, ipi_node, &ipi_dev); + if (ret) { + dev_err(dev, "failed to get IPI device from node %s\n", + ofnode_get_name(ipi_node)); + return ret; + } + } + ret = mbox_get_by_name(dev, "tx", &zynqmp_power.tx_chan); if (ret) { debug("%s: Cannot find tx mailbox\n", __func__); |