diff --git a/drivers/misc/cardreader/rts5228.c b/drivers/misc/cardreader/rts5228.c
index 448929829de4e172bf9afe052627012f7ec5ad80..f5716c63110476974148f2964d1a1d93a61980a8 100644
--- a/drivers/misc/cardreader/rts5228.c
+++ b/drivers/misc/cardreader/rts5228.c
@@ -379,11 +379,16 @@ static void rts5228_process_ocp(struct rtsx_pcr *pcr)
 
 static void rts5228_init_from_cfg(struct rtsx_pcr *pcr)
 {
+	struct pci_dev *pdev = pcr->pci;
+	int l1ss;
 	u32 lval;
 	struct rtsx_cr_option *option = &pcr->option;
 
-	pci_read_config_dword(pcr->pci, PCR_ASPM_SETTING_REG1, &lval);
+	l1ss = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_L1SS);
+	if (!l1ss)
+		return;
 
+	pci_read_config_dword(pdev, l1ss + PCI_L1SS_CTL1, &lval);
 
 	if (0 == (lval & 0x0F))
 		rtsx_pci_enable_oobs_polling(pcr);
diff --git a/drivers/misc/cardreader/rts5249.c b/drivers/misc/cardreader/rts5249.c
index 665472d05993979eac72331c29d852f5e7177843..1b8149e806c1cc8efcdba98272ad85b762c5e70a 100644
--- a/drivers/misc/cardreader/rts5249.c
+++ b/drivers/misc/cardreader/rts5249.c
@@ -95,15 +95,15 @@ static void rtsx_base_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
 static void rts5249_init_from_cfg(struct rtsx_pcr *pcr)
 {
 	struct pci_dev *pdev = pcr->pci;
+	int l1ss;
 	struct rtsx_cr_option *option = &(pcr->option);
 	u32 lval;
 
-	if (CHK_PCI_PID(pcr, PID_524A))
-		pci_read_config_dword(pdev,
-			PCR_ASPM_SETTING_REG1, &lval);
-	else
-		pci_read_config_dword(pdev,
-			PCR_ASPM_SETTING_REG2, &lval);
+	l1ss = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_L1SS);
+	if (!l1ss)
+		return;
+
+	pci_read_config_dword(pdev, l1ss + PCI_L1SS_CTL1, &lval);
 
 	if (lval & ASPM_L1_1_EN_MASK)
 		rtsx_set_dev_flag(pcr, ASPM_L1_1_EN);
diff --git a/drivers/misc/cardreader/rts5260.c b/drivers/misc/cardreader/rts5260.c
index 0e806dd7ad087981053116845a5b89be06ae6ed8..ebf77643cc90ae0250de0e866b3d1071c10580f2 100644
--- a/drivers/misc/cardreader/rts5260.c
+++ b/drivers/misc/cardreader/rts5260.c
@@ -498,10 +498,15 @@ static void rts5260_pwr_saving_setting(struct rtsx_pcr *pcr)
 static void rts5260_init_from_cfg(struct rtsx_pcr *pcr)
 {
 	struct pci_dev *pdev = pcr->pci;
+	int l1ss;
 	struct rtsx_cr_option *option = &pcr->option;
 	u32 lval;
 
-	pci_read_config_dword(pdev, PCR_ASPM_SETTING_5260, &lval);
+	l1ss = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_L1SS);
+	if (!l1ss)
+		return;
+
+	pci_read_config_dword(pdev, l1ss + PCI_L1SS_CTL1, &lval);
 
 	if (lval & ASPM_L1_1_EN_MASK)
 		rtsx_set_dev_flag(pcr, ASPM_L1_1_EN);
diff --git a/drivers/misc/cardreader/rts5261.c b/drivers/misc/cardreader/rts5261.c
index 4f30637ee4ac9fce13489ed480c6d5f6cfcc43d7..4b6e3fe4a007043901f7e01366174bfe1198cdff 100644
--- a/drivers/misc/cardreader/rts5261.c
+++ b/drivers/misc/cardreader/rts5261.c
@@ -413,10 +413,15 @@ static int rts5261_init_from_hw(struct rtsx_pcr *pcr)
 static void rts5261_init_from_cfg(struct rtsx_pcr *pcr)
 {
 	struct pci_dev *pdev = pcr->pci;
+	int l1ss;
 	u32 lval;
 	struct rtsx_cr_option *option = &pcr->option;
 
-	pci_read_config_dword(pdev, PCR_ASPM_SETTING_REG1, &lval);
+	l1ss = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_L1SS);
+	if (!l1ss)
+		return;
+
+	pci_read_config_dword(pdev, l1ss + PCI_L1SS_CTL1, &lval);
 
 	if (lval & ASPM_L1_1_EN_MASK)
 		rtsx_set_dev_flag(pcr, ASPM_L1_1_EN);
diff --git a/include/linux/rtsx_pci.h b/include/linux/rtsx_pci.h
index b93573c3c5fc87e4da951fe2e3032b8219b8e747..f146ca413f38aad9f551ae980272e12fd1c10588 100644
--- a/include/linux/rtsx_pci.h
+++ b/include/linux/rtsx_pci.h
@@ -1037,10 +1037,6 @@
 #define   PHY_DIG1E_RX_EN_KEEP		0x0001
 #define PHY_DUM_REG			0x1F
 
-#define PCR_ASPM_SETTING_REG1		0x160
-#define PCR_ASPM_SETTING_REG2		0x168
-#define PCR_ASPM_SETTING_5260		0x178
-
 #define PCR_SETTING_REG1		0x724
 #define PCR_SETTING_REG2		0x814
 #define PCR_SETTING_REG3		0x747