wifi: ath12k: set PERST pin no pull request for WCN7850

The PCIe PERST pin is currently pulled down on WCN7850 and it causes
some power leakage.

Fix it by notifying firmware not to pull down PCIe PERST pin in QMI
message for WCN7850.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4

Signed-off-by: Carl Huang <quic_cjhuang@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230404032057.3236122-3-quic_cjhuang@quicinc.com

diff --git a/drivers/net/wireless/ath/ath12k/hw.c b/drivers/net/wireless/ath/ath12k/hw.c
index cc47cbf93f6b0cbf0fa164b865b7c8e968fbe211..5991cc91cd00f034826eccd96244d355604e7ead 100644 (file)
--- a/drivers/net/wireless/ath/ath12k/hw.c
+++ b/drivers/net/wireless/ath/ath12k/hw.c
@@ -962,7 +962,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
 
                .hal_ops = &hal_wcn7850_ops,
 
-               .qmi_cnss_feature_bitmap = BIT(CNSS_QDSS_CFG_MISS_V01),
+               .qmi_cnss_feature_bitmap = BIT(CNSS_QDSS_CFG_MISS_V01) |
+                                          BIT(CNSS_PCIE_PERST_NO_PULL_V01),
        },
        {
                .name = "qcn9274 hw2.0",

diff --git a/drivers/net/wireless/ath/ath12k/qmi.h b/drivers/net/wireless/ath/ath12k/qmi.h
index ad87f19903db8f28b9899baa7c27c7d4d4f86f01..df76149c49f5fe5f43cbcd51bb63efca937b7fff 100644 (file)
--- a/drivers/net/wireless/ath/ath12k/qmi.h
+++ b/drivers/net/wireless/ath/ath12k/qmi.h
@@ -189,6 +189,7 @@ struct wlfw_host_mlo_chip_info_s_v01 {
 enum ath12k_qmi_cnss_feature {
        CNSS_FEATURE_MIN_ENUM_VAL_V01 = INT_MIN,
        CNSS_QDSS_CFG_MISS_V01 = 3,
+       CNSS_PCIE_PERST_NO_PULL_V01 = 4,
        CNSS_MAX_FEATURE_V01 = 64,
        CNSS_FEATURE_MAX_ENUM_VAL_V01 = INT_MAX,
 };