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a=ed25519-sha256; t=1772691640; l=3103; i=sumit.kumar@oss.qualcomm.com; s=20250409; h=from:subject:message-id; bh=+S/OPWfD8jiRnySHXDwKPl0Gx38XUkXnA2tMQyqcytY=; b=TK72jjuJyknXwVLrSUwewEGuy6eruyMEMLoyVD7ZdXByX5WQ08ffPNtXIK0+Zxd2Jj9MJeA9E OHWFPph2BbeAOAPQu90/A9/51gkVzesqs0Q6tFz6anwYgEZlA0RRnh3 X-Developer-Key: i=sumit.kumar@oss.qualcomm.com; a=ed25519; pk=3cys6srXqLACgA68n7n7KjDeM9JiMK1w6VxzMxr0dnM= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA1MDA0NyBTYWx0ZWRfX9nmNgqkFYs/y C/xhHA0v8YggfPXpuxgectucLGtJFb7bCya//bjDUoEFoXg0ptaek6MyasQuxYj6OJC8UjhR5Iw Tk2VYkK/TKFnpv9Nb1XSxt376RCHXPM8CcHxBcypoQU9o+tBNoNyVswEvQKvLFc14rnM/TZfsSg 9IE3LKHM88pbjnuJp/3PTQYXGs+rAl7Ny70H/tKsiLLtaXPERkH09aca9jJdvp4W/z4phzffESI BHBH9gP70dTxRicpi0Y8NrWjCF24LsZi63+VYKpdkyWuSchUyU3fgq37BUFfpLmV0UbTArjIgb1 7h0mdDX5Pp0CfcGpiL3oSBrQEOTKdQCzxl0ynNSSVuVxP0h6ZAT/PsCMq6QeUU/u0btSz8iOsgl M6UNZuV7P0R3iMWggKXpp59M3WRMMSd1VWNTpC7gQCW8ZRmtwqzgWJV8b3x2ZvQ4fnC+Jdtl3Qj +5Umxj6jln+0S3+suIA== X-Proofpoint-GUID: CIHtdDY7mGEx_92-fxdMfRtzOzmJatN1 X-Authority-Analysis: v=2.4 cv=SqydKfO0 c=1 sm=1 tr=0 ts=69a920cf cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=EUspDBNiAAAA:8 a=ujblt7VnwxmsJrSXvRcA:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-ORIG-GUID: CIHtdDY7mGEx_92-fxdMfRtzOzmJatN1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-05_01,2026-03-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 spamscore=0 suspectscore=0 impostorscore=0 adultscore=0 clxscore=1015 phishscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603050047 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260304_222104_520692_9242A120 X-CRM114-Status: GOOD ( 18.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=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