diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/firmware-zynqmp.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c index 341d7cf1358..b0cd647aa51 100644 --- a/drivers/firmware/firmware-zynqmp.c +++ b/drivers/firmware/firmware-zynqmp.c @@ -26,7 +26,7 @@ struct zynqmp_power { struct mbox_chan tx_chan; struct mbox_chan rx_chan; -} zynqmp_power; +} zynqmp_power = {}; #define NODE_ID_LOCATION 5 @@ -79,6 +79,20 @@ int zynqmp_pmufw_node(u32 id) return 0; } +static int do_pm_probe(void) +{ + struct udevice *dev; + int ret; + + ret = uclass_get_device_by_driver(UCLASS_FIRMWARE, + DM_DRIVER_GET(zynqmp_power), + &dev); + if (ret) + debug("%s: Probing device failed: %d\n", __func__, ret); + + return ret; +} + static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen) { struct zynqmp_ipi_msg msg; @@ -92,8 +106,11 @@ static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen) res_maxlen > PMUFW_PAYLOAD_ARG_CNT) return -EINVAL; - if (!(zynqmp_power.tx_chan.dev) || !(zynqmp_power.rx_chan.dev)) - return -EINVAL; + if (!(zynqmp_power.tx_chan.dev) || !(zynqmp_power.rx_chan.dev)) { + ret = do_pm_probe(); + if (ret) + return ret; + } debug("%s, Sending IPI message with ID: 0x%0x\n", __func__, req[0]); msg.buf = (u32 *)req; |