TDA4VM: Linux cannot reboot when using SBL

jianyu huo

Prodigy 175 points

Part Number: TDA4VM

Hi experts,

I'm working on a custom board of TDA4VM and the boot flow is SBL -> SPL(Main R5) -> U-Boot - > Linux.

Everything works well except that kernel hangs during reboot and I have no idea with it.

Below is the log.

Thanks

over 4 years ago

0 Karan Saxena over 4 years ago

TI__Guru* 78035 points

Hi Jianyu Huo,

Apologies for delay here.

Can you please add more details like what SDK version are you using and what are the steps you followed?

Regards,

Karan

0 Karan Saxena over 4 years ago in reply to Karan Saxena

TI__Guru* 78035 points

Also, I see issue with the flow you have mentioned: SBL -> SPL(Main R5) -> U-Boot - > Linux. SPL can not run on MAIN R5F.

Regards,

Karan

0 Karan Saxena over 4 years ago in reply to Karan Saxena

TI__Guru* 78035 points

I tried to do a "reboot" on SDK7.3 and it works fine for me. See attached logs.

Although it took a couple of seconds for it to happen.

Regards,

Karan

Logs: reboot_sbl_linux.log

0 jianyu huo over 4 years ago in reply to Karan Saxena

Prodigy 175 points

Hi Karan,

I'm using SDK 7.2 and this problem is resolved by local support team with a patch for SBL.

Thanks.

0 Karan Saxena over 4 years ago in reply to jianyu huo

TI__Guru* 78035 points

Thanks for the confirmation.

Please do post the patch here, I tested on SDK7.3 so things might have been fixed there.

Regards,

Karan

0 jianyu huo over 4 years ago in reply to Karan Saxena

Prodigy 175 points

Content is attached.

From dcb80815bd2fec01845401b4ea42befb4d3c1116 Mon Sep 17 00:00:00 2001
From: joe <joe.shen@ti.com>
Date: Fri, 22 Jan 2021 18:16:35 +0800
Subject: [PATCH] [sbl]it can not bypss DDR PLL after warm reset

Signed-off-by: joe <joe.shen@ti.com>
---
 packages/ti/boot/sbl/board/k3/sbl_main.c | 55 ++++++++++++++++++++++--
 1 file changed, 51 insertions(+), 4 deletions(-)

diff --git a/packages/ti/boot/sbl/board/k3/sbl_main.c b/packages/ti/boot/sbl/board/k3/sbl_main.c
index ebcb272..80faab4 100644
--- a/packages/ti/boot/sbl/board/k3/sbl_main.c
+++ b/packages/ti/boot/sbl/board/k3/sbl_main.c
@@ -46,6 +46,8 @@
 /**********************************************************************
  ************************** Macros ************************************
  **********************************************************************/
+#define PLL12_LOCKKEY0  0x0068C010
+#define PLL12_LOCKKEY1  0x0068C014
 
 /**********************************************************************
  ************************** Internal functions ************************
@@ -510,14 +531,25 @@ int main()
 
     SBL_log(SBL_LOG_MAX, "done.\n");
 #endif

 #if defined(SBL_ENABLE_DDR) && defined(SBL_ENABLE_PLL) && defined(SBL_ENABLE_CLOCKS)  && !defined(SBL_SKIP_SYSFW_INIT)
     SBL_log(SBL_LOG_MAX, "Initlialzing DDR ...");
+
+    CSL_REG32_WR(PLL12_LOCKKEY0, 0x68EF3490);
+    CSL_REG32_WR(PLL12_LOCKKEY1, 0xD172BC5A);
+
+    if(!(CSL_REG32_RD(PLL12_LOCKKEY0) & 0x01))
+    {
+        SBL_log(SBL_LOG_MIN, "DDR PLL unlock failed \n");
+    }
+
     SBL_ADD_PROFILE_POINT;
     Board_init(BOARD_INIT_DDR);
     SBL_log(SBL_LOG_MAX, "done.\n");
 #endif
 
-- 
2.17.1

0 Wall-E over 4 years ago in reply to Karan Saxena

Expert 1706 points

Hi Karan,

I‘m meeting a almost problem. Just my psdk is 7.00 and I boot from emmc. It also hangs when reboot.

I want to try the resolution of jianyu. But How do I compile the file what jianyu mention? And which image is the output of this compile?

Regards

0 Karan Saxena over 4 years ago in reply to Wall-E

TI__Guru* 78035 points

Hi,

You can apply this patch and re-compile the SBL you are using.

For example if you are using MMCSD SBL then do the below:

1. Apply the patch on SBL.

2. Clean the SBL

make sbl_mmcsd_img_clean

make sbl_lib_mmcsd_clean

3. Re-build the SBL

make sbl_lib_mmcsd

make sbl_mmcsd_img

4. Use the new SBL image generated.

Regards,

Karan

0 Wall-E over 4 years ago in reply to Karan Saxena

Expert 1706 points

Hi Karan,

Thanks for your reply. It's my customer board's problem. No related to the sbl.

Regards

0 Karan Saxena over 4 years ago in reply to Wall-E

TI__Guru* 78035 points

Thanks for the confirmation.

Regards,

Karan

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TDA4VM: Linux cannot reboot when using SBL