From: Robert Marko Date: Mon, 31 Jul 2023 10:08:34 +0000 (+0200) Subject: qualcommax: ipq807x: fix Gen2 PCIe port X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=5757b21db098cce0ddda1558df5430ca2e2df978;p=openwrt%2Fstaging%2Frobimarko.git qualcommax: ipq807x: fix Gen2 PCIe port Gen2 PCIe port recently got broken on IPQ807x during update to 6.1.39 as upstream backported: ("PCI: qcom: Remove PCIE20_ prefix from register definitions") [1] So, fix it by adding a pending upstream fix for it [2]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/pci/controller/dwc/pcie-qcom.c?h=v6.1.39&id=db962c7a711c3393a80a18219960cd54fb33c53d [2] https://patchwork.kernel.org/project/linux-arm-msm/patch/20230724063429.3980462-1-quic_srichara@quicinc.com/ Fixes: fec22f8375b4 ("kernel: bump 6.1 to 6.1.39") Signed-off-by: Robert Marko --- diff --git a/target/linux/qualcommax/patches-6.1/0134-PCI-qcom-Fixing-broken-pcie-enumeration-for-2_3_3-co.patch b/target/linux/qualcommax/patches-6.1/0134-PCI-qcom-Fixing-broken-pcie-enumeration-for-2_3_3-co.patch new file mode 100644 index 0000000000..1b34cdda46 --- /dev/null +++ b/target/linux/qualcommax/patches-6.1/0134-PCI-qcom-Fixing-broken-pcie-enumeration-for-2_3_3-co.patch @@ -0,0 +1,44 @@ +From f92c2f22197b7beed59b81f2aa179e16987c02e4 Mon Sep 17 00:00:00 2001 +From: Sricharan Ramabadhran +Date: Mon, 24 Jul 2023 12:04:29 +0530 +Subject: [PATCH] PCI: qcom: Fixing broken pcie enumeration for 2_3_3 configs + ops + +PARF_SLV_ADDR_SPACE_SIZE_2_3_3 macro is used for IPQ8074 2_3_3 post_init. +PCIe slave addr register offset is 0x358, but was wrongly changed to +0x168 as a part of commit 39171b33f652 ("PCI: qcom: Remove PCIE20_ prefix +from register definitions"). Fixing it, by using the right macro and remove +the unused PARF_SLV_ADDR_SPACE_SIZE_2_3_3. + +Without this access to the registers of slave addr space like iATU etc +are broken leading to pcie enumeration failure. + +Fixes: 39171b33f652 ("PCI: qcom: Remove PCIE20_ prefix from register definitions") +Cc: +Reviewed-by: Manivannan Sadhasivam +Reviewed-by: Konrad Dybcio +Signed-off-by: Sricharan Ramabadhran +--- + drivers/pci/controller/dwc/pcie-qcom.c | 4 +--- + 1 file changed, 1 insertion(+), 3 deletions(-) + +--- a/drivers/pci/controller/dwc/pcie-qcom.c ++++ b/drivers/pci/controller/dwc/pcie-qcom.c +@@ -40,7 +40,6 @@ + #define PARF_PHY_REFCLK 0x4c + #define PARF_CONFIG_BITS 0x50 + #define PARF_DBI_BASE_ADDR 0x168 +-#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3 0x16c /* Register offset specific to IP ver 2.3.3 */ + #define PARF_MHI_CLOCK_RESET_CTRL 0x174 + #define PARF_AXI_MSTR_WR_ADDR_HALT 0x178 + #define PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1a8 +@@ -1148,8 +1147,7 @@ static int qcom_pcie_post_init_2_3_3(str + u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); + u32 val; + +- writel(SLV_ADDR_SPACE_SZ, +- pcie->parf + PARF_SLV_ADDR_SPACE_SIZE_2_3_3); ++ writel(SLV_ADDR_SPACE_SZ, pcie->parf + PARF_SLV_ADDR_SPACE_SIZE); + + val = readl(pcie->parf + PARF_PHY_CTRL); + val &= ~BIT(0);