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[DEBUG] emc logging

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This commit is contained in:
Thomas Makin
2025-11-05 05:55:09 +00:00
parent aef62ecd2f
commit fbbdd32f90
1 changed files with 28 additions and 0 deletions
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28
drivers/memory/tegra/tegra186-emc.c
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@@ -395,8 +395,12 @@ static int tegra_emc_interconnect_init(struct tegra186_emc *emc)
emc->provider.xlate = tegra_emc_of_icc_xlate;
emc->provider.get_bw = tegra_emc_icc_get_init_bw;
printk("186-emc: init icc provider\n");
icc_provider_init(&emc->provider);
printk("186-emc: create icc node\n");
/* create External Memory Controller node */
node = icc_node_create(TEGRA_ICC_EMC);
if (IS_ERR(node)) {
@@ -404,14 +408,20 @@ static int tegra_emc_interconnect_init(struct tegra186_emc *emc)
goto err_msg;
}
printk("186-emc: add icc node\n");
node->name = "External Memory Controller";
icc_node_add(node, &emc->provider);
printk("186-emc: link emc icc to dram\n");
/* link External Memory Controller to External Memory (DRAM) */
err = icc_link_create(node, TEGRA_ICC_EMEM);
if (err)
goto remove_nodes;
printk("186-emc: create dram node\n");
/* create External Memory node */
node = icc_node_create(TEGRA_ICC_EMEM);
if (IS_ERR(node)) {
@@ -419,16 +429,23 @@ static int tegra_emc_interconnect_init(struct tegra186_emc *emc)
goto remove_nodes;
}
printk("186-emc: add dram node\n");
node->name = "External Memory (DRAM)";
icc_node_add(node, &emc->provider);
printk("186-emc: register icc provider\n");
err = icc_provider_register(&emc->provider);
if (err)
goto remove_nodes;
printk("186-emc: icc init success\n");
return 0;
remove_nodes:
printk("186-emc: removing icc nodes\n");
icc_nodes_remove(&emc->provider);
err_msg:
dev_err(emc->dev, "failed to initialize ICC: %d\n", err);
@@ -460,16 +477,24 @@ static int tegra186_emc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, emc);
emc->dev = &pdev->dev;
printk("186-emc: emc_rate_requests_init\n");
tegra_emc_rate_requests_init(emc);
printk("186-emc: mrq supported?\n");
if (tegra_bpmp_mrq_is_supported(emc->bpmp, MRQ_EMC_DVFS_LATENCY)) {
printk("186-emc: mrq supported\n");
err = tegra186_emc_get_emc_dvfs_latency(emc);
if (err)
goto put_bpmp;
printk("186-emc: got emc dvfs latency\n");
}
if (mc && mc->soc->icc_ops) {
printk("186-emc: icc ops -> mrq supported?\n");
if (tegra_bpmp_mrq_is_supported(emc->bpmp, MRQ_BWMGR_INT)) {
printk("186-emc: mrq supported, configuring mc\n");
mc->bwmgr_mrq_supported = true;
/*
@@ -481,6 +506,8 @@ static int tegra186_emc_probe(struct platform_device *pdev)
barrier();
}
printk("186-emc: init emc interconnect\n");
/*
* Initialize the ICC even if BPMP-FW doesn't support 'MRQ_BWMGR_INT'.
* Use the flag 'mc->bwmgr_mrq_supported' within MC driver and return
@@ -497,6 +524,7 @@ static int tegra186_emc_probe(struct platform_device *pdev)
return 0;
put_bpmp:
printk("186-emc: FAILED\n");
tegra_bpmp_put(emc->bpmp);
return err;
}