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Merge branch 'pci/controller/qcom'

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- Look up OPP using both frequency and data rate (not just frequency) so
  RPMh votes can account for both (Krishna Chaitanya Chundru)

* pci/controller/qcom:
  PCI: qcom: Use frequency and level based OPP lookup
This commit is contained in:
Bjorn Helgaas 2025-12-03 14:18:40 -06:00
commit 368485218c
1 changed files with 15 additions and 2 deletions
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17
drivers/pci/controller/dwc/pcie-qcom.c
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@ -1567,6 +1567,7 @@ static void qcom_pcie_icc_opp_update(struct qcom_pcie *pcie)
{
u32 offset, status, width, speed;
struct dw_pcie *pci = pcie->pci;
struct dev_pm_opp_key key = {};
unsigned long freq_kbps;
struct dev_pm_opp *opp;
int ret, freq_mbps;
@ -1594,8 +1595,20 @@ static void qcom_pcie_icc_opp_update(struct qcom_pcie *pcie)
return;
freq_kbps = freq_mbps * KILO;
opp = dev_pm_opp_find_freq_exact(pci->dev, freq_kbps * width,
true);
opp = dev_pm_opp_find_level_exact(pci->dev, speed);
if (IS_ERR(opp)) {
/* opp-level is not defined use only frequency */
opp = dev_pm_opp_find_freq_exact(pci->dev, freq_kbps * width,
true);
} else {
/* put opp-level OPP */
dev_pm_opp_put(opp);
key.freq = freq_kbps * width;
key.level = speed;
key.bw = 0;
opp = dev_pm_opp_find_key_exact(pci->dev, &key, true);
}
if (!IS_ERR(opp)) {
ret = dev_pm_opp_set_opp(pci->dev, opp);
if (ret)