CCS/TDA4VM: Two tda4 cascaded through PCIE

bing hu

Part Number: TDA4VM

Tool/software: Code Composer Studio

hi ，

When debugging pcie's driver according to the link, I found that the corresponding version below PSDK7.0, patch cannot be used for kernel 5.4.40

http://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-jacinto7/latest/exports/docs/linux/Foundational_Components/Kernel/Kernel_Drivers/PCIe/PCIe_End_Point.html

Is there a patch of PSDK7.0 kernel 5.4.40 ？

Background link：https://e2e.ti.com/support/tools/sim-hw-system-design/f/234/t/926492

thanks

hubing

over 5 years ago

0 Vishal Mahaveer over 5 years ago

TI__Mastermind 33010 points

Hi Hubing,

To enable pcie_ep for a pcie instance, remove the status = "disabled" flag from pcieX_ep and add that flag to pcieX_rc.
For ex: do the below change for enabling pcie0 in ep mode.

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
index 6788a3611..b7cd6c7b6 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
@@ -813,6 +813,7 @@
        phys = <&serdes0_pcie_link>;
        phy-names = "pcie_phy";
        num-lanes = <1>;
+       status = "disabled";
 };

 &pcie1_rc {
@@ -833,7 +834,6 @@
        phys = <&serdes0_pcie_link>;
        phy-names = "pcie_phy";
        num-lanes = <1>;
-       status = "disabled";
 };

 &pcie1_ep {

Regards,
Vishal

Processors

Processors forum

CCS/TDA4VM: Two tda4 cascaded through PCIE