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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org For multi-port controllers, equalization preset properties should be specified in individual root port nodes rather than the controller node, allowing each port to have its own configuration. Change of_pci_get_equalization_presets() to accept a device_node pointer. This allows parsing equalization presets from any device tree node, which is needed for multi-port PCIe controllers. Signed-off-by: Sumit Kumar --- drivers/pci/of.c | 6 ++++-- drivers/pci/pci.h | 2 ++ 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 3579265f119845637e163d9051437c89662762f8..d09eff40b523c920c9ca3eaa64f784765b3c5bf8 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -971,6 +971,7 @@ EXPORT_SYMBOL_GPL(of_pci_get_slot_power_limit); * of_pci_get_equalization_presets - Parses the "eq-presets-Ngts" property. * * @dev: Device containing the properties. + * @node: Device tree node containing the properties. * @presets: Pointer to store the parsed data. * @num_lanes: Maximum number of lanes supported. * @@ -981,6 +982,7 @@ EXPORT_SYMBOL_GPL(of_pci_get_slot_power_limit); * errno otherwise. */ int of_pci_get_equalization_presets(struct device *dev, + struct device_node *node, struct pci_eq_presets *presets, int num_lanes) { @@ -988,7 +990,7 @@ int of_pci_get_equalization_presets(struct device *dev, int ret; presets->eq_presets_8gts[0] = PCI_EQ_RESV; - ret = of_property_read_u16_array(dev->of_node, "eq-presets-8gts", + ret = of_property_read_u16_array(node, "eq-presets-8gts", presets->eq_presets_8gts, num_lanes); if (ret && ret != -EINVAL) { dev_err(dev, "Error reading eq-presets-8gts: %d\n", ret); @@ -998,7 +1000,7 @@ int of_pci_get_equalization_presets(struct device *dev, for (int i = 0; i < EQ_PRESET_TYPE_MAX - 1; i++) { presets->eq_presets_Ngts[i][0] = PCI_EQ_RESV; snprintf(name, sizeof(name), "eq-presets-%dgts", 8 << (i + 1)); - ret = of_property_read_u8_array(dev->of_node, name, + ret = of_property_read_u8_array(node, name, presets->eq_presets_Ngts[i], num_lanes); if (ret && ret != -EINVAL) { diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 34f65d69662e9f61f0c489ec58de2ce17d21c0c6..72fa6db95b8a75f6e69b8019d1eb2262b6a46c13 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -965,6 +965,7 @@ void pci_release_bus_of_node(struct pci_bus *bus); int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge); bool of_pci_supply_present(struct device_node *np); int of_pci_get_equalization_presets(struct device *dev, + struct device_node *node, struct pci_eq_presets *presets, int num_lanes); #else @@ -1013,6 +1014,7 @@ static inline bool of_pci_supply_present(struct device_node *np) } static inline int of_pci_get_equalization_presets(struct device *dev, + struct device_node *node, struct pci_eq_presets *presets, int num_lanes) { -- 2.34.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic