From: Iuliana Prodan <iuliana.prodan@xxxxxxx> There are cases when we want to test samples that do not reply with FW READY message, after fw is loaded and the remote processor started. In these cases, do not wait for a confirmation from the remote processor at start. Added "ignore_dsp_ready" flag while inserting the module to ignore remote processor reply after start. By default, this is off - do not ignore reply from rproc. Signed-off-by: Iuliana Prodan <iuliana.prodan@xxxxxxx> --- This was discovered while testing openamp_rsc_table sample from Zephyr repo (https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/subsys/ipc/openamp_rsc_table). We have IPC, but the remote proc doesn't send a FW_READY reply. --- drivers/remoteproc/imx_dsp_rproc.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/remoteproc/imx_dsp_rproc.c b/drivers/remoteproc/imx_dsp_rproc.c index b5634507d953..ed89de2f3b98 100644 --- a/drivers/remoteproc/imx_dsp_rproc.c +++ b/drivers/remoteproc/imx_dsp_rproc.c @@ -36,7 +36,13 @@ module_param_named(no_mailboxes, no_mailboxes, int, 0644); MODULE_PARM_DESC(no_mailboxes, "There is no mailbox between cores, so ignore remote proc reply after start, default is 0 (off)."); +static unsigned int imx_dsp_rproc_ignore_ready; +module_param_named(ignore_dsp_ready, imx_dsp_rproc_ignore_ready, int, 0644); +MODULE_PARM_DESC(ignore_dsp_ready, + "Ignore remote proc reply after start, default is 0 (off)."); + #define REMOTE_IS_READY BIT(0) +#define REMOTE_IGNORE_READY_REPLY BIT(1) #define REMOTE_READY_WAIT_MAX_RETRIES 500 /* att flags */ @@ -296,6 +302,12 @@ static int imx_dsp_rproc_ready(struct rproc *rproc) if (!priv->rxdb_ch) return 0; + /* + * FW_READY reply is optional/ignored, so don't wait for it. + */ + if (priv->flags & REMOTE_IGNORE_READY_REPLY) + return 0; + for (i = 0; i < REMOTE_READY_WAIT_MAX_RETRIES; i++) { if (priv->flags & REMOTE_IS_READY) return 0; @@ -1119,6 +1131,9 @@ static int imx_dsp_rproc_probe(struct platform_device *pdev) else imx_dsp_rproc_mbox_init = imx_dsp_rproc_mbox_alloc; + if (imx_dsp_rproc_ignore_ready) + priv->flags |= REMOTE_IGNORE_READY_REPLY; + dev_set_drvdata(dev, rproc); INIT_WORK(&priv->rproc_work, imx_dsp_rproc_vq_work); -- 2.17.1
