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| author | Nishanth Menon <nm@ti.com> | 2022-01-25 20:56:27 +0530 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2022-02-08 09:41:26 -0500 |
| commit | 473bd5aee1308d43a3ad9baee9dd8ec1fb6b4a2d (patch) | |
| tree | a72212bc933849e31b28df1cb2570c92ba30baee | |
| parent | 8b139f4e1c08c4ffb1a8e739db128ed02cbc637f (diff) | |
| download | u-boot-473bd5aee1308d43a3ad9baee9dd8ec1fb6b4a2d.tar.gz u-boot-473bd5aee1308d43a3ad9baee9dd8ec1fb6b4a2d.tar.bz2 u-boot-473bd5aee1308d43a3ad9baee9dd8ec1fb6b4a2d.zip | |
remoteproc: k3_system_controller: Support optional boot_notification channel
If there is an optional boot notification channel that an SoC uses
separate from the rx path, use the same.
Signed-off-by: Nishanth Menon <nm@ti.com>
| -rw-r--r-- | doc/device-tree-bindings/remoteproc/k3-system-controller.txt | 3 | ||||
| -rw-r--r-- | drivers/remoteproc/k3_system_controller.c | 20 |
2 files changed, 22 insertions, 1 deletions
diff --git a/doc/device-tree-bindings/remoteproc/k3-system-controller.txt b/doc/device-tree-bindings/remoteproc/k3-system-controller.txt index 32f4720b0d..33dc46812e 100644 --- a/doc/device-tree-bindings/remoteproc/k3-system-controller.txt +++ b/doc/device-tree-bindings/remoteproc/k3-system-controller.txt @@ -13,6 +13,9 @@ Required properties: "rx" for Receive channel - mboxes: Corresponding phandles to mailbox channels. +Optional properties: +-------------------- +- mbox-names: "boot_notify" for Optional alternate boot notification channel. Example: -------- diff --git a/drivers/remoteproc/k3_system_controller.c b/drivers/remoteproc/k3_system_controller.c index 89cb90207d..e2affe69c6 100644 --- a/drivers/remoteproc/k3_system_controller.c +++ b/drivers/remoteproc/k3_system_controller.c @@ -77,14 +77,18 @@ struct k3_sysctrler_desc { * struct k3_sysctrler_privdata - Structure representing System Controller data. * @chan_tx: Transmit mailbox channel * @chan_rx: Receive mailbox channel + * @chan_boot_notify: Boot notification channel * @desc: SoC description for this instance * @seq_nr: Counter for number of messages sent. + * @has_boot_notify: Has separate boot notification channel */ struct k3_sysctrler_privdata { struct mbox_chan chan_tx; struct mbox_chan chan_rx; + struct mbox_chan chan_boot_notify; struct k3_sysctrler_desc *desc; u32 seq_nr; + bool has_boot_notify; }; static inline @@ -223,7 +227,8 @@ static int k3_sysctrler_start(struct udevice *dev) debug("%s(dev=%p)\n", __func__, dev); /* Receive the boot notification. Note that it is sent only once. */ - ret = mbox_recv(&priv->chan_rx, &msg, priv->desc->max_rx_timeout_us); + ret = mbox_recv(priv->has_boot_notify ? &priv->chan_boot_notify : + &priv->chan_rx, &msg, priv->desc->max_rx_timeout_us); if (ret) { dev_err(dev, "%s: Boot Notification response failed. ret = %d\n", __func__, ret); @@ -272,6 +277,19 @@ static int k3_of_to_priv(struct udevice *dev, return ret; } + /* Some SoCs may have a optional channel for boot notification. */ + priv->has_boot_notify = 1; + ret = mbox_get_by_name(dev, "boot_notify", &priv->chan_boot_notify); + if (ret == -ENODATA) { + dev_dbg(dev, "%s: Acquiring optional Boot_notify failed. ret = %d. Using Rx\n", + __func__, ret); + priv->has_boot_notify = 0; + } else if (ret) { + dev_err(dev, "%s: Acquiring boot_notify channel failed. ret = %d\n", + __func__, ret); + return ret; + } + return 0; } |