Add early boot support for AM64 single cpu mode configuration. In single CPU mode the 2nd core of the R5F cluster can't be used or unavailable.
Signed-off-by: Hari Nagalla <hnaga...@ti.com> --- logs: https://paste.sr.ht/~hnagalla/d8a941e1949c2558e10cf28bcb91c0dfa73ef037 drivers/remoteproc/ti_k3_r5f_rproc.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/ti_k3_r5f_rproc.c b/drivers/remoteproc/ti_k3_r5f_rproc.c index f4bab6868ee..2986e5ccad7 100644 --- a/drivers/remoteproc/ti_k3_r5f_rproc.c +++ b/drivers/remoteproc/ti_k3_r5f_rproc.c @@ -233,7 +233,7 @@ static int k3_r5f_prepare(struct udevice *dev) dev_dbg(dev, "%s\n", __func__); - if (cluster->mode == CLUSTER_MODE_LOCKSTEP) + if ((cluster->mode == CLUSTER_MODE_LOCKSTEP) || (cluster->mode == CLUSTER_MODE_SINGLECPU)) ret = k3_r5f_lockstep_release(cluster); else ret = k3_r5f_split_release(core); @@ -269,6 +269,13 @@ static int k3_r5f_core_sanity_check(struct k3_r5f_core *core) return -EINVAL; } + if (cluster->mode == CLUSTER_MODE_SINGLECPU && !is_primary_core(core)) { + dev_err(core->dev, + "Invalid op: Trying to start secondary core %d in single CPU mode\n", + core->tsp.proc_id); + return -EINVAL; + } + if (cluster->mode == CLUSTER_MODE_SPLIT && !is_primary_core(core)) { if (!core->cluster->cores[0]->in_use) { dev_err(core->dev, @@ -768,7 +775,7 @@ static void k3_r5f_core_adjust_tcm_sizes(struct k3_r5f_core *core) { struct k3_r5f_cluster *cluster = core->cluster; - if (cluster->mode == CLUSTER_MODE_LOCKSTEP) + if ((cluster->mode == CLUSTER_MODE_LOCKSTEP) || (cluster->mode == CLUSTER_MODE_SINGLECPU)) return; if (!core->ipdata->tcm_is_double) -- 2.34.1
