RM520N-GL modem issue

Technical Subjects Driver
,
1

Hi ,

We are using the RM520NGLAA-M20-SGASA modem via PCIE communication.We have connected the modem through the PCIE switch.PCIE enumeration is happened and PCIE link is up.

Driver: Quectel_Linux_PCIE_MHI_Driver_V1.3.5.zip

PCIE Switch: PI7C9X3G816GPBHFCE

The above-mentioned driver is the one we are using for the RM520 modem.

lspci
00:00.0 PCI bridge: Xilinx Corporation Device 9134
01:00.0 PCI bridge: Pericom Semiconductor Device c016 (rev 07)
02:04.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06)
02:05.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06)
02:06.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06)
02:07.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06)
03:00.0 Unassigned class [ff00]: Qualcomm Device 0308
04:00.0 Unassigned class [ff00]: Qualcomm Device 0308
05:00.0 Unassigned class [ff00]: Qualcomm Device 0308
06:00.0 Unassigned class [ff00]: Qualcomm Device 0308

lspci -v

root@SD:~# lspci -v
00:00.0 PCI bridge: Xilinx Corporation Device 9134 (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 255
Memory at a0500000 (32-bit, non-prefetchable) [size=128K]
Bus: primary=00, secondary=01, subordinate=06, sec-latency=0
I/O behind bridge: 00000000-00000fff [size=4K]
Memory behind bridge: a0000000-a04fffff [size=5M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Port (Slot+), MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [128] Vendor Specific Information: ID=0000 Rev=1 Len=038 <?> Capabilities: [200] Vendor Specific Information: ID=0002 Rev=0 Len=038 <?>

01:00.0 PCI bridge: Pericom Semiconductor Device c016 (rev 07) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Memory at a0400000 (32-bit, non-prefetchable) [size=512K]
Bus: primary=01, secondary=02, subordinate=06, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: a0000000-a03fffff [size=4M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Upstream Port, MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [b0] MSI-X: Enable- Count=6 Masked-
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1b0] Power Budgeting <?> Capabilities: [1d0] Multicast Capabilities: [210] Secondary PCI Express Capabilities: [2b0] L1 PM Substates Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

02:04.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: a0000000-a00fffff [size=1M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Downstream Port (Slot+), MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1c0] Access Control Services
Capabilities: [1d0] Multicast
Capabilities: [210] Secondary PCI Express
Capabilities: [2a0] Downstream Port Containment
Capabilities: [2b0] L1 PM Substates
Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

02:05.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary=04, subordinate=04, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: a0100000-a01fffff [size=1M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Downstream Port (Slot+), MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1c0] Access Control Services
Capabilities: [1d0] Multicast
Capabilities: [210] Secondary PCI Express
Capabilities: [2a0] Downstream Port Containment
Capabilities: [2b0] L1 PM Substates
Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

02:06.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary=05, subordinate=05, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: a0200000-a02fffff [size=1M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Downstream Port (Slot+), MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1c0] Access Control Services
Capabilities: [1d0] Multicast
Capabilities: [210] Secondary PCI Express
Capabilities: [2a0] Downstream Port Containment
Capabilities: [2b0] L1 PM Substates
Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

02:07.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary=06, subordinate=06, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: a0300000-a03fffff [size=1M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Downstream Port (Slot+), MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1c0] Access Control Services
Capabilities: [1d0] Multicast
Capabilities: [210] Secondary PCI Express
Capabilities: [2a0] Downstream Port Containment
Capabilities: [2b0] L1 PM Substates
Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

03:00.0 Unassigned class [ff00]: Qualcomm Device 0308
Subsystem: Qualcomm Device 5201
Flags: bus master, fast devsel, latency 0, IRQ 60
Memory at a0000000 (64-bit, non-prefetchable) [size=4K]
Memory at a0001000 (64-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=4/32 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [148] Secondary PCI Express
Capabilities: [168] Physical Layer 16.0 GT/s <?> Capabilities: [18c] Lane Margining at the Receiver <?>
Capabilities: [19c] Transaction Processing Hints
Capabilities: [228] Latency Tolerance Reporting
Capabilities: [230] L1 PM Substates
Capabilities: [240] Data Link Feature <?>
Kernel driver in use: mhi_q
Kernel modules: pcie_mhi

04:00.0 Unassigned class [ff00]: Qualcomm Device 0308
Subsystem: Qualcomm Device 5201
Flags: bus master, fast devsel, latency 0, IRQ 64
Memory at a0100000 (64-bit, non-prefetchable) [size=4K]
Memory at a0101000 (64-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=4/32 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [148] Secondary PCI Express
Capabilities: [168] Physical Layer 16.0 GT/s <?> Capabilities: [18c] Lane Margining at the Receiver <?>
Capabilities: [19c] Transaction Processing Hints
Capabilities: [228] Latency Tolerance Reporting
Capabilities: [230] L1 PM Substates
Capabilities: [240] Data Link Feature <?>
Kernel driver in use: mhi_q
Kernel modules: pcie_mhi

05:00.0 Unassigned class [ff00]: Qualcomm Device 0308
Subsystem: Qualcomm Device 5201
Flags: bus master, fast devsel, latency 0, IRQ 68
Memory at a0200000 (64-bit, non-prefetchable) [size=4K]
Memory at a0201000 (64-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=4/32 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [148] Secondary PCI Express
Capabilities: [168] Physical Layer 16.0 GT/s <?> Capabilities: [18c] Lane Margining at the Receiver <?>
Capabilities: [19c] Transaction Processing Hints
Capabilities: [228] Latency Tolerance Reporting
Capabilities: [230] L1 PM Substates
Capabilities: [240] Data Link Feature <?>
Kernel driver in use: mhi_q
Kernel modules: pcie_mhi

06:00.0 Unassigned class [ff00]: Qualcomm Device 0308
Subsystem: Qualcomm Device 5201
Flags: bus master, fast devsel, latency 0, IRQ 72
Memory at a0300000 (64-bit, non-prefetchable) [size=4K]
Memory at a0301000 (64-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=4/32 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [148] Secondary PCI Express
Capabilities: [168] Physical Layer 16.0 GT/s <?> Capabilities: [18c] Lane Margining at the Receiver <?>
Capabilities: [19c] Transaction Processing Hints
Capabilities: [228] Latency Tolerance Reporting
Capabilities: [230] L1 PM Substates
Capabilities: [240] Data Link Feature <?>
Kernel driver in use: mhi_q
Kernel modules: pcie_mhi

BOOT LOGS :

[ 10.329925] udevd[262]: starting eudev-3.2.9
[ 10.524018] mali: loading out-of-tree module taints kernel.
[ 10.614082] mhi_init Quectel_Linux_PCIE_MHI_Driver_V1.3.5
[ 10.619808] mhi_pci_probe pci_dev->name = 0000:03:00.0, domain=0, bus=3, slot=0, vendor=17CB, device=0308
[ 10.638803] [I][mhi0][mhi_arch_set_bus_request] Setting bus request to index 1
[ 10.638832] mhi_q 0000:03:00.0: BAR 0: assigned [mem 0xa0000000-0xa0000fff 64bit]
[ 10.646419] pci 0000:00:00.0: enabling device (0000 → 0002)
[ 10.652136] pci 0000:01:00.0: enabling device (0000 → 0002)
[ 10.657834] pci 0000:02:04.0: enabling device (0000 → 0002)
[ 10.663522] mhi_q 0000:03:00.0: enabling device (0000 → 0002)
[ 10.669396] [I][mhi0][mhi_init_pci_dev] mhi_cntrl->regs = (ptrval)
[ 10.669595] [I][mhi0][mhi_init_pci_dev] msi_required = 4, msi_allocated = 4, msi_irq = 60
[ 10.669612] [I][mhi0][mhi_power_up] dev_state:RESET
[ 10.669616] [I][mhi0][mhi_async_power_up] Requested to power on
[ 10.672767] [I][mhi0][mhi_alloc_coherent] size = 98304, dma_handle = 6dd00000
[ 10.672780] [I][mhi0][mhi_init_dev_ctxt] mhi_ctxt->ctrl_seg = ffff800011e4d000
[ 10.677375] *** mhi_async_power_up ** irqbase: 0
[ 10.682078] [I][mhi0][mhi_async_power_up] dev_state:RESET ee:AMSS
[ 10.682130] [I][mhi0][mhi_async_power_up] Power on setup success
[ 10.682169] [I][mhi0][mhi_pci_show_link] LnkCap: Speed 16GT/s, Width x2
[ 10.682173] [I][mhi0][mhi_pci_show_link] LnkSta: Speed 8GT/s, Width x1
[ 10.682177] [I][mhi0][mhi_pci_probe] Return successful
[ 10.682461] [I][mhi0][mhi_pm_st_worker] Transition to state:READY
[ 10.682471] [I][mhi0][mhi_pm_st_worker] INVALID_EE → AMSS
[ 10.682476] [I][mhi0][mhi_ready_state_transition] Waiting to enter READY state
[ 10.893388] EXT4-fs (mmcblk1p2): recovery complete
[ 10.905118] EXT4-fs (mmcblk1p2): mounted filesystem with ordered data mode. Opts: (null)
[ 10.916739] FAT-fs (mmcblk1p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 11.044905] EXT4-fs (mmcblk0p3): recovery complete
[ 11.049727] EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts: (null)
[ 11.057202] EXT4-fs (mmcblk0p4): recovery complete
[ 11.062620] EXT4-fs (mmcblk0p4): mounted filesystem with ordered data mode. Opts: (null)
[ 11.072326] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 11.163196] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 11.362364] urandom_read: 4 callbacks suppressed
[ 11.362369] random: dd: uninitialized urandom read (512 bytes read)
[ 11.465868] update-alternatives: Linking /usr/lib/libMali.so.9.0 to /usr/lib/x11/libMali.so.9.0
[ 11.500582] Warn: update-alternatives: libmali-xlnx has multiple providers with the same priority, please check /usr/lib/opkg/alternatives/libmalis
[ 11.529827] update-alternatives: Linking /usr/lib/libMali.so.9.0 to /usr/lib/x11/libMali.so.9.0
[ 11.564294] Warn: update-alternatives: libmali-xlnx has multiple providers with the same priority, please check /usr/lib/opkg/alternatives/libmalis
[ 11.594164] update-alternatives: Linking /usr/lib/libMali.so.9.0 to /usr/lib/x11/libMali.so.9.0
[ 11.644350] update-alternatives: Linking /usr/lib/libMali.so.9.0 to /usr/lib/x11/libMali.so.9.0
[ 12.536221] random: crng init done
[ 13.874509] [I][mhi0][mhi_ready_state_transition] Device in READY State
[ 13.874517] [I][mhi0][mhi_tryset_pm_state] Transition to pm state from:POR to:POR
[ 13.874523] [I][mhi0][mhi_init_mmio] Initializing MMIO Base Address = ffff80001185d000
[ 13.874529] [I][mhi0][mhi_init_mmio] CHDBOFF:0x300
[ 13.874537] [I][mhi0][mhi_init_mmio] ERDBOFF:0x700
[ 13.874541] [I][mhi0][mhi_init_mmio] Programming all MMIO values.

It always gets stopped at this stage, and we are not getting interrupts.

From the above logs, Modem gets into the ready state and is not moving to the M0 state.

listed mhi devices are,

root@SD:~# ls /dev/mhi_*
/dev/mhi_BHI /dev/mhi_BHI1 /dev/mhi_BHI2 /dev/mhi_BHI3

only mhi_BHI device we are getting.Could you please help on this?

2

Hi, I see.
What’s the linux kernel version?
For lastest kernel, there is a default mhi driver. I guess that the defualt mhi driver has loaded.

3

Please check:

lspci -v
lspci -vvv

4

What’s the PCIE host ? From which company?
Is it possible to provide the boot dmesg log?

5

I will send the pcie_mhi 1.3.6.
And what if you only insert only one?

6

Please just try one.
If possible, please use oscilloscope to cache the voltage wave of the PCIE_RST and PCIE_WAKE

7

Hi Bean,

We have tried with only single modem same issue we are facing.

lspci -v

root@SD:/media/sd-mmcblk0p2# lspci -v
00:00.0 PCI bridge: Xilinx Corporation Device 9134 (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 255
Memory at a0200000 (32-bit, non-prefetchable) [size=128K]
Bus: primary=00, secondary=01, subordinate=06, sec-latency=0
I/O behind bridge: 00000000-00000fff [size=4K]
Memory behind bridge: a0000000-a01fffff [size=2M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Port (Slot+), MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [128] Vendor Specific Information: ID=0000 Rev=1 Len=038 <?> Capabilities: [200] Vendor Specific Information: ID=0002 Rev=0 Len=038 <?>

01:00.0 PCI bridge: Pericom Semiconductor Device c016 (rev 07) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Memory at a0100000 (32-bit, non-prefetchable) [size=512K]
Bus: primary=01, secondary=02, subordinate=06, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: a0000000-a00fffff [size=1M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Upstream Port, MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [b0] MSI-X: Enable- Count=6 Masked-
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1b0] Power Budgeting <?> Capabilities: [1d0] Multicast Capabilities: [210] Secondary PCI Express Capabilities: [2b0] L1 PM Substates Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

02:04.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06) (prog-if 00 [Normal decode])
Flags: fast devsel
Bus: primary=02, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: [disabled]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Downstream Port (Slot+), MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1c0] Access Control Services
Capabilities: [1d0] Multicast
Capabilities: [210] Secondary PCI Express
Capabilities: [2a0] Downstream Port Containment
Capabilities: [2b0] L1 PM Substates
Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

02:05.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary=04, subordinate=04, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: a0000000-a00fffff [size=1M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Downstream Port (Slot+), MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1c0] Access Control Services
Capabilities: [1d0] Multicast
Capabilities: [210] Secondary PCI Express
Capabilities: [2a0] Downstream Port Containment
Capabilities: [2b0] L1 PM Substates
Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

02:06.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06) (prog-if 00 [Normal decode])
Flags: fast devsel
Bus: primary=02, secondary=05, subordinate=05, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: [disabled]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Downstream Port (Slot+), MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1c0] Access Control Services
Capabilities: [1d0] Multicast
Capabilities: [210] Secondary PCI Express
Capabilities: [2a0] Downstream Port Containment
Capabilities: [2b0] L1 PM Substates
Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

02:07.0 PCI bridge: Pericom Semiconductor Device c016 (rev 06) (prog-if 00 [Normal decode])
Flags: fast devsel
Bus: primary=02, secondary=06, subordinate=06, sec-latency=0
I/O behind bridge: [disabled]
Memory behind bridge: [disabled]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable- Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Downstream Port (Slot+), MSI 00
Capabilities: [a4] Subsystem: Pericom Semiconductor Device c016
Capabilities: [100] Advanced Error Reporting
Capabilities: [130] Virtual Channel
Capabilities: [1a0] Device Serial Number 08-16-48-96-00-00-12-d8
Capabilities: [1c0] Access Control Services
Capabilities: [1d0] Multicast
Capabilities: [210] Secondary PCI Express
Capabilities: [2a0] Downstream Port Containment
Capabilities: [2b0] L1 PM Substates
Capabilities: [300] Vendor Specific Information: ID=0000 Rev=0 Len=560 <?>

04:00.0 Unassigned class [ff00]: Qualcomm Device 0308
Subsystem: Qualcomm Device 5201
Flags: bus master, fast devsel, latency 0, IRQ 60
Memory at a0000000 (64-bit, non-prefetchable) [size=4K]
Memory at a0001000 (64-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=4/32 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [148] Secondary PCI Express
Capabilities: [168] Physical Layer 16.0 GT/s <?> Capabilities: [18c] Lane Margining at the Receiver <?>
Capabilities: [19c] Transaction Processing Hints
Capabilities: [228] Latency Tolerance Reporting
Capabilities: [230] L1 PM Substates
Capabilities: [240] Data Link Feature <?>
Kernel driver in use: mhi_q
Kernel modules: pcie_mhi

8

Please find the attached log of lspci -vvv and dmesg logs

dmesg.txt (26.9 KB)
lspci-vvv.txt (42.3 KB)

kernel version - 5.10
PCIE host company - Diode incorporated

9

Hi Bean,

We can read the PCIe modem registers from that testing, so we conclude that the reset state moves to the ready state.After the host sends the update to move to the second stage, i.e., the M0 state, it has not changed to the M0 state, and we are also not getting the interrupts from the modem.

I have tried with pcie_mhi 1.3.1 and 1.3.5 drivers, but the same issue persists.

PCIE_WAKE: Always High
PCIE_RESET: Always High

10

PCIE_WAKE: Always High
PCIE_RESET: Always High

It is not as expected for the PCIE enumeration.

11

If you really need know why.
Please provide the log of the RM520N.

12

image
image1001×612 40.1 KB

13

You could get the AP log of the RM520N through the debug port.

14

Host side:
lspci -vvv
dmesg
cat /sys/kernel/debug/mhi_q//states
cat /sys/kernel/debug/mhi_q//chan
cat /sys/kernel/debug/mhi_q//events
cat /sys/kernel/debug/mhi_q/mhi_netdev//states
cat /proc/interrupts
modem side:
dmesg
cat /sys/kernel/debug/ipc_logging/ep-pcie-short/log
cat /sys/kernel/debug/ipc_logging/ep-pcie-long//log
cat /sys/kernel/debug/ipc_logging/ep-pcie-dump/log
cat /sys/kernel/debug/ipc_logging/mhi/log
cat /sys/kernel/debug/ipc_logging/mhi-uci/log
cat /sys/kernel/debug/ipc_logging/ipa/log
cat /sys/kernel/debug/ipc_logging/gsi/log

15

I have also sent you the 1.3.6. did you recieve it?

16

image
image1088×582 36 KB

17

No Bean still i didn’t receive it ,

Could you please share it to ranjithkumar.rajendhiran@vvdntech.in?

18

Please provide those log.

19

1.3.6 has been sent over meassage and chat.

20

Hi Bean,

root@SD:~# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
11: 3273 7191 3336 3099 GICv2 30 Level arch_timer
14: 0 0 0 0 GICv2 67 Level zynqmp_ipi
19: 0 0 0 0 GICv2 156 Level zynqmp-dma
20: 0 0 0 0 GICv2 157 Level zynqmp-dma
21: 0 0 0 0 GICv2 158 Level zynqmp-dma
22: 0 0 0 0 GICv2 159 Level zynqmp-dma
23: 0 0 0 0 GICv2 160 Level zynqmp-dma
24: 0 0 0 0 GICv2 161 Level zynqmp-dma
25: 0 0 0 0 GICv2 162 Level zynqmp-dma
26: 0 0 0 0 GICv2 163 Level zynqmp-dma
27: 0 0 0 0 GICv2 164 Level Mali_GP_MMU, Mali_GP, Mali_PP0_MMU, Mali_PP0, Mali_PP1_MMU, Mali_PP1
28: 0 0 0 0 GICv2 109 Level zynqmp-dma
29: 0 0 0 0 GICv2 110 Level zynqmp-dma
30: 0 0 0 0 GICv2 111 Level zynqmp-dma
31: 0 0 0 0 GICv2 112 Level zynqmp-dma
32: 0 0 0 0 GICv2 113 Level zynqmp-dma
33: 0 0 0 0 GICv2 114 Level zynqmp-dma
34: 0 0 0 0 GICv2 115 Level zynqmp-dma
35: 0 0 0 0 GICv2 116 Level zynqmp-dma
38: 102 0 0 0 GICv2 49 Level cdns-i2c
39: 0 0 0 0 GICv2 50 Level cdns-i2c
40: 0 0 0 0 GICv2 42 Level ff960000.memory-controller
41: 0 0 0 0 GICv2 57 Level axi-pmon, axi-pmon
42: 0 0 0 0 GICv2 155 Level axi-pmon, axi-pmon
43: 0 0 0 0 GICv2 47 Level ff0f0000.spi
44: 0 0 0 0 GICv2 58 Level ffa60000.rtc
45: 0 0 0 0 GICv2 59 Level ffa60000.rtc
46: 890 0 0 0 GICv2 80 Level mmc0
47: 1202 0 0 0 GICv2 81 Level mmc1
49: 503 0 0 0 GICv2 54 Level xuartps
51: 0 0 0 0 GICv2 84 Edge ff150000.watchdog
52: 0 0 0 0 GICv2 88 Level ams-irq
54: 28 0 0 0 GICv2 121 Level xilinx-pcie
57: 0 0 0 0 GICv2 102 Level dwc3
58: 1 0 0 0 GICv2 106 Level dwc3-otg
59: 0 0 0 0 GICv2 108 Level usb-wakeup
60: 0 0 0 0 xilinx_pcie:msi 1572864 Edge mhi
61: 0 0 0 0 xilinx_pcie:msi 1572865 Edge mhi
62: 0 0 0 0 xilinx_pcie:msi 1572866 Edge mhi
63: 0 0 0 0 xilinx_pcie:msi 1572867 Edge mhi
64: 0 0 0 0 xilinx_pcie:msi 2097152 Edge mhi
65: 0 0 0 0 xilinx_pcie:msi 2097153 Edge mhi
66: 0 0 0 0 xilinx_pcie:msi 2097154 Edge mhi
67: 0 0 0 0 xilinx_pcie:msi 2097155 Edge mhi
68: 0 0 0 0 xilinx_pcie:msi 2621440 Edge mhi
69: 0 0 0 0 xilinx_pcie:msi 2621441 Edge mhi
70: 0 0 0 0 xilinx_pcie:msi 2621442 Edge mhi
71: 0 0 0 0 xilinx_pcie:msi 2621443 Edge mhi
72: 0 0 0 0 xilinx_pcie:msi 3145728 Edge mhi
73: 0 0 0 0 xilinx_pcie:msi 3145729 Edge mhi
74: 0 0 0 0 xilinx_pcie:msi 3145730 Edge mhi
75: 0 0 0 0 xilinx_pcie:msi 3145731 Edge mhi
IPI0: 149 188 216 106 Rescheduling interrupts
IPI1: 977 932 1315 911 Function call interrupts
IPI2: 0 0 0 0 CPU stop interrupts
IPI3: 0 0 0 0 CPU stop (for crash dump) interrupts
IPI4: 0 0 0 0 Timer broadcast interrupts
IPI5: 0 0 0 0 IRQ work interrupts
IPI6: 0 0 0 0 CPU wake-up interrupts