Re: [PATCH v3 3/8] mailbox: Add transmit done by blocking option

[Jassi Brar]

On Mon, Jul 2, 2018 at 5:10 PM, Mikko Perttunen <mperttunen@xxxxxxxxxx> wrote:
> Add a new TXDONE option, TXDONE_BY_BLOCK. With this option, the
> send_data function of the mailbox driver is expected to block until
> the message has been sent. The new option is used with the Tegra
> Combined UART driver to minimize unnecessary overhead when transmitting
> data.
>
1) TXDONE_BY_BLOCK flag :-
        Have you tried setting the flag mbox_chan->mbox_client->tx_block ?

2) Implementing TEGRA_HSP_MBOX_TYPE_SM :-
       In mailbox framework, a controller is a collection of identical
channels. That is, instances of the same class.
       So ideally, in probe you should populate a controller for each
type of channel, i.e, DB, SM, SS and AS.