[FAQ] J7200XSOMXEVM: How to use the QSGMII expansion board with DRA821 SDK V7.3

Peter Li79

Part Number: J7200XSOMXEVM
Other Parts Discussed in Thread: DRA821

I have got the DRA821 EVM (J7200 SOM, and J7 common processor board), and also the "Quad-Port Ethernet expansion board" (a.k.a QSGMII expansion board).

J7200 SOM: https://www.ti.com/tool/J7200XSOMXEVM
J7 common processor board: https://www.ti.com/tool/J721EXCPXEVM
the QSGMII expansion board: included in the J7 common processor board package
J7200 SDK V7.3: https://www.ti.com/tool/PROCESSOR-SDK-J7200

With the default SDK V7.3 code, the QSGMII board doesn't work.

How can I make it work with J7200 SDK V7.3?

over 2 years ago

0 Peter Li79 over 2 years ago

TI__Expert 8940 points

Here are the changes needed:

changes for Linux:

0001-disable-main_i2c0-in-linux.diff

From 935ee6810452219869c397b8621ac10cd0ba88a2 Mon Sep 17 00:00:00 2001
From: Peter Li <a0220410@ti.com>
Date: Tue, 20 Apr 2021 17:40:54 +0800
Subject: [PATCH 1/2] disable main_i2c0 in linux

---
 arch/arm64/boot/dts/ti/k3-j7200-dra821a.dtso | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-dra821a.dtso b/arch/arm64/boot/dts/ti/k3-j7200-dra821a.dtso
index 5f2b219e7..3a5b4cf5a 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-dra821a.dtso
+++ b/arch/arm64/boot/dts/ti/k3-j7200-dra821a.dtso
@@ -22,4 +22,8 @@
 
 &main_r5fss0_core1 {
 	status = "disabled";
+};
+
+&main_i2c0 {
+	status = "disabled";
 };
\ No newline at end of file
-- 
2.17.1

in the $ti-processor-sdk-linux-j7200-evm-07_03_00_04:

run command: make linux-dtbs

Then you will get an updated k3-j7200-dra821a.dtbo, and then update it to $rootfs/boot/

changes for pdk_j7200_07_03_00_29:

0001-use-ethfw-to-config-main_i2c0.diff

From 62c92618bcb9e300c437028504b45804e927ef17 Mon Sep 17 00:00:00 2001
From: Peter Li <a0220410@ti.com>
Date: Tue, 20 Apr 2021 17:36:01 +0800
Subject: [PATCH 1/5] use ethfw to config main_i2c0

---
 packages/ti/drv/enet/examples/utils/makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/ti/drv/enet/examples/utils/makefile b/packages/ti/drv/enet/examples/utils/makefile
index 40ccfc9..64fda61 100644
--- a/packages/ti/drv/enet/examples/utils/makefile
+++ b/packages/ti/drv/enet/examples/utils/makefile
@@ -33,7 +33,7 @@ else
     MODULE_NAME = enet_example_utils
     ENET_CFLAGS += -DSDK_6_2_CORE_SDK_IMAGE
     ifeq ($(CORE),$(filter $(CORE), mcu2_0))
-      ENET_CFLAGS += -DENETAPPUTILS_BYPASS_I2C
+#      ENET_CFLAGS += -DENETAPPUTILS_BYPASS_I2C
       ifeq ($(SOC),$(filter $(SOC), j721e))
         ENET_CFLAGS += -DENETAPPUTILS_BYPASS_QSGMII
       endif
-- 
2.17.1

0002-enable-Main_I2C-module-by-ethfw.diff

From 6846279f7fc5b1176301ef77eb6b3875700cc635 Mon Sep 17 00:00:00 2001
From: Peter Li <a0220410@ti.com>
Date: Tue, 20 Apr 2021 18:22:34 +0800
Subject: [PATCH 2/5] enable Main_I2C module by ethfw

---
 .../drv/enet/examples/utils/V1/enet_appboardutils_j721e_evm.c  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/ti/drv/enet/examples/utils/V1/enet_appboardutils_j721e_evm.c b/packages/ti/drv/enet/examples/utils/V1/enet_appboardutils_j721e_evm.c
index 387b467..b5e2d70 100644
--- a/packages/ti/drv/enet/examples/utils/V1/enet_appboardutils_j721e_evm.c
+++ b/packages/ti/drv/enet/examples/utils/V1/enet_appboardutils_j721e_evm.c
@@ -214,7 +214,8 @@ void EnetBoard_initEthFw(void)
     uint32_t clkModuleId[] = { TISCI_DEV_DDR0,
                                TISCI_DEV_TIMER12,
                                TISCI_DEV_TIMER13,
-                               TISCI_DEV_UART2, };
+                               TISCI_DEV_UART2,
+                               TISCI_DEV_I2C0, };
 
     appFlags = 0U;
     moduleCnt = ENET_ARRAYSIZE(clkModuleId);
-- 
2.17.1

Then clean and rebuild ethfw_all,

in $ti-processor-sdk-rtos-j7200-evm-07_03_00_07/ethfw,

run command:

(step1:) make ethfw_all_clean BUILD_SOC_LIST=J7200

(step2:) make ethfw_all BUILD_SOC_LIST=J7200

then update app_remoteswitchcfg_server_strip.xer5f to $rootfs/lib/firmware/ethfw/

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[FAQ] J7200XSOMXEVM: How to use the QSGMII expansion board with DRA821 SDK V7.3