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interconnect: qcom: Configure QoS when provider is sync stated

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In the current code, QoS configuration is attempted before the votes
for MM0 are in place. That's why we may observe some hangs during boot.
Move all QoS configuration to happen during the sync_state to ensure
that the keepalive votes are already in place and also enable the
relevant interface clocks while we setup QoS.

Change-Id: Ief6817b8e32423f07fece4cf04068e7311c9f8cb
Signed-off-by: Georgi Djakov <gdjako@codeaurora.org>
This commit is contained in:
Georgi Djakov 2020-02-18 02:39:11 -08:00
commit 51cd983d87
1 changed files with 16 additions and 12 deletions
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28
drivers/interconnect/qcom/lahaina.c
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@ -818,10 +818,6 @@ static int qnoc_probe(struct platform_device *pdev)
if (qp->num_clks < 0)
return qp->num_clks;
ret = clk_bulk_prepare_enable(qp->num_clks, qp->clks);
if (ret)
return ret;
for (i = 0; i < num_nodes; i++) {
size_t j;
@ -848,14 +844,9 @@ static int qnoc_probe(struct platform_device *pdev)
icc_link_create(node, qnodes[i]->links[j]);
data->nodes[i] = node;
if (qnodes[i]->noc_ops)
qnodes[i]->noc_ops->set_qos(qnodes[i]);
}
data->num_nodes = num_nodes;
clk_bulk_disable_unprepare(qp->num_clks, qp->clks);
clk_bulk_put_all(qp->num_clks, qp->clks);
for (i = 0; i < qp->num_bcms; i++)
qcom_icc_bcm_init(qp->bcms[i], &pdev->dev);
@ -869,8 +860,6 @@ static int qnoc_probe(struct platform_device *pdev)
return ret;
err:
clk_bulk_disable_unprepare(qp->num_clks, qp->clks);
clk_bulk_put_all(qp->num_clks, qp->clks);
list_for_each_entry(node, &provider->nodes, node_list) {
icc_node_del(node);
icc_node_destroy(node->id);
@ -925,11 +914,26 @@ MODULE_DEVICE_TABLE(of, qnoc_of_match);
static void qnoc_sync_state(struct device *dev)
{
struct qcom_icc_provider *qp;
struct platform_device *pdev = to_platform_device(dev);
struct qcom_icc_provider *qp = platform_get_drvdata(pdev);
struct icc_provider *provider = &qp->provider;
struct qcom_icc_node *qnode;
struct icc_node *node;
mutex_lock(&probe_list_lock);
probe_count++;
clk_bulk_prepare_enable(qp->num_clks, qp->clks);
list_for_each_entry(node, &provider->nodes, node_list) {
qnode = node->data;
if (qnode && qnode->noc_ops)
qnode->noc_ops->set_qos(qnode);
}
clk_bulk_disable_unprepare(qp->num_clks, qp->clks);
clk_bulk_put_all(qp->num_clks, qp->clks);
if (probe_count < ARRAY_SIZE(qnoc_of_match) - 1) {
mutex_unlock(&probe_list_lock);
return;