wifi: rtw89: pci: add to do PCI auto calibration

8852be needs this with n times calibration to correct hardware clock.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220927062611.30484-6-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/pci.c

@@ -1874,6 +1874,18 @@ __get_target(struct rtw89_dev *rtwdev, u16 *target, enum rtw89_pcie_phy phy_rate
 	return 0;
 }
 
+static int rtw89_pci_autok_x(struct rtw89_dev *rtwdev)
+{
+	int ret;
+
+	if (rtwdev->chip->chip_id != RTL8852B)
+		return 0;
+
+	ret = rtw89_write16_mdio_mask(rtwdev, RAC_REG_FLD_0, BAC_AUTOK_N_MASK,
+				      PCIE_AUTOK_4, PCIE_PHY_GEN1);
+	return ret;
+}
+
 static int rtw89_pci_auto_refclk_cal(struct rtw89_dev *rtwdev, bool autook_en)
 {
 	enum rtw89_pcie_phy phy_rate;
@@ -2452,6 +2464,12 @@ static int rtw89_pci_ops_mac_pre_init(struct rtw89_dev *rtwdev)
 	rtw89_pci_hci_ldo(rtwdev);
 	rtw89_pci_dphy_delay(rtwdev);
 
+	ret = rtw89_pci_autok_x(rtwdev);
+	if (ret) {
+		rtw89_err(rtwdev, "[ERR] pcie autok_x fail %d\n", ret);
+		return ret;
+	}
+
 	ret = rtw89_pci_auto_refclk_cal(rtwdev, false);
 	if (ret) {
 		rtw89_err(rtwdev, "[ERR] pcie autok fail %d\n", ret);

drivers/net/wireless/realtek/rtw89/pci.h

@@ -23,6 +23,9 @@
 #define PCIE_DPHY_DLY_25US		0x1
 #define RAC_ANA19			0x19
 #define B_PCIE_BIT_RD_SEL		BIT(2)
+#define RAC_REG_FLD_0			0x1D
+#define BAC_AUTOK_N_MASK		GENMASK(3, 2)
+#define PCIE_AUTOK_4			0x3
 #define RAC_ANA1F			0x1F
 #define RAC_ANA24			0x24
 #define B_AX_DEGLITCH			GENMASK(11, 8)