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remoteproc: xlnx: Allow single core use in split mode

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When operating in split mode, it is a valid usecase to have
only one core enabled in the cluster. Remove exact core count
expecatation from the driver.

Signed-off-by: Tanmay Shah <tanmay.shah@amd.com>
Link: https://lore.kernel.org/r/20250618181933.1253033-1-tanmay.shah@amd.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
This commit is contained in:
Tanmay Shah 2025-06-18 11:19:33 -07:00 committed by Mathieu Poirier
parent f6588dea0a
commit 82a4277fa5
1 changed files with 10 additions and 6 deletions
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16
drivers/remoteproc/xlnx_r5_remoteproc.c
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@ -1329,19 +1329,23 @@ static int zynqmp_r5_cluster_init(struct zynqmp_r5_cluster *cluster)
/*
* Number of cores is decided by number of child nodes of
* r5f subsystem node in dts. If Split mode is used in dts
* 2 child nodes are expected.
* r5f subsystem node in dts.
* In split mode maximum two child nodes are expected.
* However, only single core can be enabled too.
* Driver can handle following configuration in split mode:
* 1) core0 enabled, core1 disabled
* 2) core0 disabled, core1 enabled
* 3) core0 and core1 both are enabled.
* For now, no more than two cores are expected per cluster
* in split mode.
* In lockstep mode if two child nodes are available,
* only use first child node and consider it as core0
* and ignore core1 dt node.
*/
core_count = of_get_available_child_count(dev_node);
if (core_count == 0) {
if (core_count == 0 || core_count > 2) {
dev_err(dev, "Invalid number of r5 cores %d", core_count);
return -EINVAL;
} else if (cluster_mode == SPLIT_MODE && core_count != 2) {
dev_err(dev, "Invalid number of r5 cores for split mode\n");
return -EINVAL;
} else if (cluster_mode == LOCKSTEP_MODE && core_count == 2) {
dev_warn(dev, "Only r5 core0 will be used\n");
core_count = 1;