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@@ -77,14 +77,18 @@ struct k3_sysctrler_desc {
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* struct k3_sysctrler_privdata - Structure representing System Controller data.
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* @chan_tx: Transmit mailbox channel
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* @chan_rx: Receive mailbox channel
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+ * @chan_boot_notify: Boot notification channel
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* @desc: SoC description for this instance
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* @seq_nr: Counter for number of messages sent.
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+ * @has_boot_notify: Has separate boot notification channel
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*/
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struct k3_sysctrler_privdata {
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struct mbox_chan chan_tx;
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struct mbox_chan chan_rx;
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+ struct mbox_chan chan_boot_notify;
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struct k3_sysctrler_desc *desc;
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u32 seq_nr;
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+ bool has_boot_notify;
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};
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static inline
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@@ -223,7 +227,8 @@ static int k3_sysctrler_start(struct udevice *dev)
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debug("%s(dev=%p)\n", __func__, dev);
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/* Receive the boot notification. Note that it is sent only once. */
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- ret = mbox_recv(&priv->chan_rx, &msg, priv->desc->max_rx_timeout_us);
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+ ret = mbox_recv(priv->has_boot_notify ? &priv->chan_boot_notify :
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+ &priv->chan_rx, &msg, priv->desc->max_rx_timeout_us);
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if (ret) {
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dev_err(dev, "%s: Boot Notification response failed. ret = %d\n",
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__func__, ret);
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@@ -272,6 +277,19 @@ static int k3_of_to_priv(struct udevice *dev,
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return ret;
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}
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+ /* Some SoCs may have a optional channel for boot notification. */
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+ priv->has_boot_notify = 1;
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+ ret = mbox_get_by_name(dev, "boot_notify", &priv->chan_boot_notify);
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+ if (ret == -ENODATA) {
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+ dev_dbg(dev, "%s: Acquiring optional Boot_notify failed. ret = %d. Using Rx\n",
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+ __func__, ret);
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+ priv->has_boot_notify = 0;
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+ } else if (ret) {
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+ dev_err(dev, "%s: Acquiring boot_notify channel failed. ret = %d\n",
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+ __func__, ret);
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+ return ret;
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+ }
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+
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return 0;
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}
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