[PATCH rtw-next 7/9] wifi: rtw89: pci: set PCIe maximum TS1 for RTL8922DE

[Ping-Ke Shih <pkshih@realtek.com>]

Set TS1 (training sequence 1) to 1024 when PCIe enters recovery state to
improve RF interference while entering and leaving L1ss.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/pci.h    |  1 +
 drivers/net/wireless/realtek/rtw89/pci_be.c | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtw89/pci.h b/drivers/net/wireless/realtek/rtw89/pci.h
index 339706d99f6c..0e1557cedd20 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.h
+++ b/drivers/net/wireless/realtek/rtw89/pci.h
@@ -1138,6 +1138,7 @@
 #define RTW89_PCIE_GEN1_SPEED		0x01
 #define RTW89_PCIE_GEN2_SPEED		0x02
 #define RTW89_PCIE_PHY_RATE		0x82
+#define RTW89_PCIE_EXTENDED_SYNCH	BIT(7)
 #define RTW89_PCIE_PHY_RATE_MASK	GENMASK(1, 0)
 #define RTW89_PCIE_LINK_CHANGE_SPEED	0xA0
 #define RTW89_PCIE_L1SS_STS_V1		0x0168
diff --git a/drivers/net/wireless/realtek/rtw89/pci_be.c b/drivers/net/wireless/realtek/rtw89/pci_be.c
index 6390980b8ee0..d338bf633272 100644
--- a/drivers/net/wireless/realtek/rtw89/pci_be.c
+++ b/drivers/net/wireless/realtek/rtw89/pci_be.c
@@ -85,13 +85,22 @@ static void _patch_pcie_power_wake_be(struct rtw89_dev *rtwdev, bool power_up)
 
 static void _patch_pre_init_be(struct rtw89_dev *rtwdev)
 {
+	struct rtw89_pci *rtwpci = (struct rtw89_pci *)rtwdev->priv;
 	struct rtw89_hal *hal = &rtwdev->hal;
+	struct pci_dev *pdev = rtwpci->pdev;
 
-	if (!(rtwdev->chip->chip_id == RTL8922D && hal->cid == RTL8922D_CID7090))
+	if (rtwdev->chip->chip_id != RTL8922D)
 		return;
 
+	if (hal->cid != RTL8922D_CID7090)
+		goto set_ts1;
+
 	rtw89_write16_clr(rtwdev, R_RAC_DIRECT_OFFSET_BE_LANE0_G2 +
 				  RAC_ANA14 * RAC_MULT, EIEOS_L1SS_WAIT_CLKRDY);
+
+set_ts1:
+	pci_clear_and_set_config_dword(pdev, RTW89_PCIE_L1_STS_V1,
+				       0, RTW89_PCIE_EXTENDED_SYNCH);
 }
 
 static void rtw89_pci_set_io_rcy_be(struct rtw89_dev *rtwdev)
-- 
2.25.1