SK-AM62A-LP: wifi m2 key E module compatible

Mickael LE STEPHAN

Part Number: SK-AM62A-LP
Other Parts Discussed in Thread: CC3301,

Hello,

I have an m.2 key E module from Laird that use an Infineon (Cypress) CYW4373E module see details here.

We have the version 453-00049 that use usb/usb for wifi and ble

I use the lastest sdk (9.0). Can you tell me if the driver is included in the image please ?

As i understand, the cypress soc use brcmfmac driver. On the card i did this

root@am62axx-evm:/sys/bus/pci# zcat /proc/config.gz | grep  -i brcmfmac
CONFIG_BRCMFMAC=m
CONFIG_BRCMFMAC_PROTO_BCDC=y
CONFIG_BRCMFMAC_SDIO=y
# CONFIG_BRCMFMAC_USB is not set
# CONFIG_BRCMFMAC_PCIE is not set

I suppose i need to build the usb module for the kernel ?

or do i need to use this backport of laird : https://www.lairdconnect.com/documentation/application-note-petalinux-software-integration-60-series-and-lwb-series

Otherwise if i order the sdio/uart module 453-00048 it will work without the need to build kernel module ?

Regards

over 3 years ago

0 Mickael LE STEPHAN over 3 years ago

Intellectual 390 points

Hello, today tried to power up the module but have some problem.

If i understand the board schematic i need to enable (put to high) pin BT_EN_SOC and BT_WLAN_EN.
BT_EN_SOC --> gpio-287 (BT_EN_SOC |sysfs ) out lo
BT_WLAN_EN --> MMC2_SDCD ? what is the correspondant pin Mapping in sysfs please

root@am62axx-evm:/sys/class/gpio# cat /sys/kernel/debug/gpio
gpiochip5: GPIOs 285-308, parent: i2c/1-0022, 1-0022, can sleep:
 gpio-285 (GPIO_CPSW2_RST      )
 gpio-286 (GPIO_CPSW1_RST      )
 gpio-287 (BT_EN_SOC           |sysfs               ) out lo
 gpio-288 (MMC1_SD_EN          |regulator-3         ) out hi
 gpio-289 (VPP_EN              )
 gpio-290 (EXP_PS_3V3_En       )
 gpio-291 (EXP_PS_5V0_En       )
 gpio-292 (EXP_HAT_DETECT      )
 gpio-293 (GPIO_AUD_RSTn       )
 gpio-294 (GPIO_eMMC_RSTn      )
 gpio-295 (UART1_FET_BUF_EN    )
 gpio-296 (BT_UART_WAKE_SOC    )
 gpio-297 (GPIO_HDMI_RSTn      )
 gpio-298 (CSI_GPIO0           )
 gpio-299 (CSI_GPIO1           )
 gpio-300 (WLAN_ALERTn         )
 gpio-301 (HDMI_INTn           )
 gpio-302 (TEST_GPIO2          )
 gpio-303 (MCASP1_FET_EN       )
 gpio-304 (MCASP1_BUF_BT_EN    )
 gpio-305 (MCASP1_FET_SEL      )
 gpio-306 (UART1_FET_SEL       )
 gpio-307 (PD_I2C_IRQ          )
 gpio-308 (IO_EXP_TEST_LED     )

gpiochip4: GPIOs 309-319, parent: i2c/0-0048, tps6594-gpio, can sleep:

gpiochip3: GPIOs 320-371, parent: platform/601000.gpio, 601000.gpio:
 gpio-369 (                    |am62a-sk:green:heart) out lo

gpiochip2: GPIOs 372-463, parent: platform/600000.gpio, 600000.gpio:
 gpio-403 (                    |vddshv_sdio         ) out lo

gpiochip1: GPIOs 464-487, parent: platform/4201000.gpio, 4201000.gpio:

gpiochip0: GPIOs 488-511, parent: i2c/1-0023, 1-0023, can sleep:
 gpio-496 (WL_LT_EN            |sysfs               ) out lo
 gpio-497 (CSI_RSTz            )
 gpio-504 (SPI0_FET_SEL        )
 gpio-505 (SPI0_FET_OE         )
 gpio-506 (RGMII2_BRD_CONN_DET )
 gpio-507 (CSI_SEL2            )
 gpio-508 (CSI_EN              )
 gpio-509 (AUTO_100M_1000M_CONF)
 gpio-510 (CSI_VLDO_SEL        )
 gpio-511 (SoC_WLAN_SDIO_RST   )

I suppose also to SDIO with 1.8V need to use

WL_LT_EN --> gpio-496 (WL_LT_EN |sysfs ) out lo

root@am62axx-evm:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Sep  4 13:18 export
lrwxrwxrwx 1 root root    0 Sep  4 13:19 gpio287 -> ../../devices/platform/bus@f0000/20010000.i2c/i2c-1/1-0022/gpiochip5/gpio/gpio287
lrwxrwxrwx 1 root root    0 Sep  4 13:11 gpio496 -> ../../devices/platform/bus@f0000/20010000.i2c/i2c-1/1-0023/gpiochip0/gpio/gpio496
lrwxrwxrwx 1 root root    0 Apr 28  2022 gpiochip285 -> ../../devices/platform/bus@f0000/20010000.i2c/i2c-1/1-0022/gpio/gpiochip285
lrwxrwxrwx 1 root root    0 Apr 28  2022 gpiochip309 -> ../../devices/platform/bus@f0000/20000000.i2c/i2c-0/0-0048/gpio/gpiochip309
lrwxrwxrwx 1 root root    0 Apr 28  2022 gpiochip320 -> ../../devices/platform/bus@f0000/601000.gpio/gpio/gpiochip320
lrwxrwxrwx 1 root root    0 Apr 28  2022 gpiochip372 -> ../../devices/platform/bus@f0000/600000.gpio/gpio/gpiochip372
lrwxrwxrwx 1 root root    0 Apr 28  2022 gpiochip464 -> ../../devices/platform/bus@f0000/bus@f0000:bus@4000000/4201000.gpio/gpio/gpiochip464
lrwxrwxrwx 1 root root    0 Apr 28  2022 gpiochip488 -> ../../devices/platform/bus@f0000/20010000.i2c/i2c-1/1-0023/gpio/gpiochip488
--w------- 1 root root 4096 Apr 28  2022 unexport

Can you help please ?

0 Mickael LE STEPHAN over 3 years ago in reply to Mickael LE STEPHAN

Intellectual 390 points

Hello,

Up, if someone can help please ?

If someone can tell me the mapping for MMC2_SDCD pin in sysfs please ?

0 Schuyler Patton over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 41520 points

Hi,

TI will not be able to support driver questions on the wifi device.

The kernel TI provides is an LTS kernel so if the driver is integrated into the mainline and then the LTS then the driver should be there.

Typically a DTS node would be used to describe the necessary pins for a wifi device. Does the wifi vendor provide any DTS examples?

Best Regards,

Schuyler

0 Mickael LE STEPHAN over 3 years ago in reply to Schuyler Patton

Intellectual 390 points

Hi, first thank you for your answer. I understand about the support of wifi driver. But currently i'm looking to find the mapping of the pin WLAN_EN --> MMC2_SDCD (gpio071) on sysfs. are you able to give me it please ?

0 Praneeth Bajjuri over 3 years ago in reply to Mickael LE STEPHAN

TI__Expert 6616 points

you would need to use libgpiod instead of sysfs

Related FAQ on usage of gpio:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1260373/faq-transitioning-the-gpio-userspace-interface-from-sysfs-to-chardev

You will need to contact the wifi module manufacturer for details on how to configure the M2 module (Also its important to know if the manufacturer has the associated kernel driver in mainline 6.1 and compatible with 6.1 LTS, also associated firmware as well )

0 Mickael LE STEPHAN over 3 years ago in reply to Praneeth Bajjuri

Intellectual 390 points

Thank you about lipgpiod.

Yes i already read the manufacturer documentation about my module !

First i need to power the module and enable it like describ in the manufacturer documentation

As it mentionned i need to enable pin 54 and 56 on m2 connector.
Following your schematic :

I need to enable pin BT_EN_SOC / BT_WLAN_EN (mapped to WLAN_EN) and WL_LT_EN.
I can enable BT_EN_SOC and WL_LT_EN but can't find information about WLAN_EN

...

If i understand, WLAN_EN is mapped to GPIO0_71.
Since GPIO0 has a base address of 0x600000, gpiodetect tells us that gpiochip2 corresponds to GPIO0
with lipgpiod i proceed like this

root@am62axx-evm:/sys/class/gpio# gpiodetect
gpiochip0 [1-0023] (24 lines)
gpiochip1 [4201000.gpio] (24 lines)
gpiochip2 [600000.gpio] (92 lines)
gpiochip3 [601000.gpio] (52 lines)
gpiochip4 [tps6594-gpio] (11 lines)
gpiochip5 [1-0022] (24 lines)
root@am62axx-evm:/sys/class/gpio# gpioset gpiochip2 71=1

Can you tell me if i'm correct please ?

0 Schuyler Patton over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 41520 points

Hi,

I will pull in another team member to assist with more details on your question.

Best Regards,

Schuyler

0 Anshu Madwesh over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 24325 points

Hello,

Can you share the output of gpioinfo? It will be a long list of pins. Have you modified the kernel device tree?

-Anshu

0 Mickael LE STEPHAN over 3 years ago in reply to Anshu Madwesh

Intellectual 390 points

Hello, see below for gpioinfo result and no i didn't change anything in the kernel device tree.
Can you confirm me that the usb pin 3 and 5 are connected to AM62 pins ?

root@am62axx-evm:/opt/edgeai-gst-apps# gpioinfo
gpiochip0 - 24 lines:
        line   0:      unnamed       unused   input active-high
        line   1:      unnamed       unused   input active-high
        line   2:      unnamed       unused   input active-high
        line   3:      unnamed       unused   input active-high
        line   4:      unnamed       unused   input active-high
        line   5:      unnamed       unused   input active-high
        line   6:      unnamed       unused   input active-high
        line   7:      unnamed       unused   input active-high
        line   8:   "WL_LT_EN"       unused   input active-high
        line   9:   "CSI_RSTz"       unused   input active-high
        line 10:      unnamed       unused   input active-high
        line 11:      unnamed       unused   input active-high
        line 12:      unnamed       unused   input active-high
        line 13:      unnamed       unused   input active-high
        line 14:      unnamed       unused   input active-high
        line 15:      unnamed       unused   input active-high
        line 16: "SPI0_FET_SEL" unused input active-high
        line 17: "SPI0_FET_OE" unused input active-high
        line 18: "RGMII2_BRD_CONN_DET" unused input active-high
        line 19:   "CSI_SEL2"       unused   input active-high
        line 20:     "CSI_EN"       unused   input active-high
        line 21: "AUTO_100M_1000M_CONFIG" unused input active-high
        line 22: "CSI_VLDO_SEL" unused input active-high
        line 23: "SoC_WLAN_SDIO_RST" unused input active-high
gpiochip1 - 24 lines:
        line   0:      unnamed       unused   input active-high
        line   1:      unnamed       unused   input active-high
        line   2:      unnamed       unused   input active-high
        line   3:      unnamed       unused   input active-high
        line   4:      unnamed       unused   input active-high
        line   5:      unnamed       unused   input active-high
        line   6:      unnamed       unused   input active-high
        line   7:      unnamed       unused   input active-high
        line   8:      unnamed       unused   input active-high
        line   9:      unnamed       unused   input active-high
        line 10:      unnamed       unused   input active-high
        line 11:      unnamed       unused   input active-high
        line 12:      unnamed       unused   input active-high
        line 13:      unnamed       unused   input active-high
        line 14:      unnamed       unused   input active-high
        line 15:      unnamed       unused   input active-high
        line 16:      unnamed       unused   input active-high
        line 17:      unnamed       unused   input active-high
        line 18:      unnamed       unused   input active-high
        line 19:      unnamed       unused   input active-high
        line 20:      unnamed       unused   input active-high
        line 21:      unnamed       unused   input active-high
        line 22:      unnamed       unused   input active-high
        line 23:      unnamed       unused   input active-high
gpiochip2 - 92 lines:
        line   0:      unnamed       unused   input active-high
        line   1:      unnamed       unused   input active-high
        line   2:      unnamed       unused   input active-high
        line   3:      unnamed       unused   input active-high
        line   4:      unnamed       unused   input active-high
        line   5:      unnamed       unused   input active-high
        line   6:      unnamed       unused   input active-high
        line   7:      unnamed       unused   input active-high
        line   8:      unnamed       unused   input active-high
        line   9:      unnamed       unused   input active-high
        line 10:      unnamed       unused   input active-high
        line 11:      unnamed       unused   input active-high
        line 12:      unnamed       unused   input active-high
        line 13:      unnamed       unused   input active-high
        line 14:      unnamed       unused   input active-high
        line 15:      unnamed       unused   input active-high
        line 16:      unnamed       unused   input active-high
        line 17:      unnamed       unused   input active-high
        line 18:      unnamed       unused   input active-high
        line 19:      unnamed       unused   input active-high
        line 20:      unnamed       unused   input active-high
        line 21:      unnamed       unused   input active-high
        line 22:      unnamed       unused   input active-high
        line 23:      unnamed       unused   input active-high
        line 24:      unnamed       unused   input active-high
        line 25:      unnamed       unused   input active-high
        line 26:      unnamed       unused   input active-high
        line 27:      unnamed       unused   input active-high
        line 28:      unnamed       unused   input active-high
        line 29:      unnamed       unused   input active-high
        line 30:      unnamed       unused   input active-high
        line 31:      unnamed "vddshv_sdio" output active-high [used]
        line 32:      unnamed       unused   input active-high
        line 33:      unnamed       unused   input active-high
        line 34:      unnamed       unused   input active-high
        line 35:      unnamed       unused   input active-high
        line 36:      unnamed       unused   input active-high
        line 37:      unnamed       unused   input active-high
        line 38:      unnamed       unused   input active-high
        line 39:      unnamed       unused   input active-high
        line 40:      unnamed       unused   input active-high
        line 41:      unnamed       unused   input active-high
        line 42:      unnamed       unused   input active-high
        line 43:      unnamed       unused   input active-high
        line 44:      unnamed       unused   input active-high
        line 45:      unnamed       unused   input active-high
        line 46:      unnamed       unused   input active-high
        line 47:      unnamed       unused   input active-high
        line 48:      unnamed       unused   input active-high
        line 49:      unnamed       unused   input active-high
        line 50:      unnamed       unused   input active-high
        line 51:      unnamed       unused   input active-high
        line 52:      unnamed       unused   input active-high
        line 53:      unnamed       unused   input active-high
        line 54:      unnamed       unused   input active-high
        line 55:      unnamed       unused   input active-high
        line 56:      unnamed       unused   input active-high
        line 57:      unnamed       unused   input active-high
        line 58:      unnamed       unused   input active-high
        line 59:      unnamed       unused   input active-high
        line 60:      unnamed       unused   input active-high
        line 61:      unnamed       unused   input active-high
        line 62:      unnamed       unused   input active-high
        line 63:      unnamed       unused   input active-high
        line 64:      unnamed       unused   input active-high
        line 65:      unnamed       unused   input active-high
        line 66:      unnamed       unused   input active-high
        line 67:      unnamed       unused   input active-high
        line 68:      unnamed       unused   input active-high
        line 69:      unnamed       unused   input active-high
        line 70:      unnamed       unused   input active-high
        line 71:      unnamed       unused   input active-high
        line 72:      unnamed       unused   input active-high
        line 73:      unnamed       unused   input active-high
        line 74:      unnamed       unused   input active-high
        line 75:      unnamed       unused   input active-high
        line 76:      unnamed       unused   input active-high
        line 77:      unnamed       unused   input active-high
        line 78:      unnamed       unused   input active-high
        line 79:      unnamed       unused   input active-high
        line 80:      unnamed       unused   input active-high
        line 81:      unnamed       unused   input active-high
        line 82:      unnamed       unused   input active-high
        line 83:      unnamed       unused   input active-high
        line 84:      unnamed       unused   input active-high
        line 85:      unnamed       unused   input active-high
        line 86:      unnamed       unused   input active-high
        line 87:      unnamed       unused   input active-high
        line 88:      unnamed       unused   input active-high
        line 89:      unnamed       unused   input active-high
        line 90:      unnamed       unused   input active-high
        line 91:      unnamed       unused   input active-high
gpiochip3 - 52 lines:
        line   0:      unnamed       unused   input active-high
        line   1:      unnamed       unused   input active-high
        line   2:      unnamed       unused   input active-high
        line   3:      unnamed       unused   input active-high
        line   4:      unnamed       unused   input active-high
        line   5:      unnamed       unused   input active-high
        line   6:      unnamed       unused   input active-high
        line   7:      unnamed       unused   input active-high
        line   8:      unnamed       unused   input active-high
        line   9:      unnamed       unused   input active-high
        line 10:      unnamed       unused   input active-high
        line 11:      unnamed       unused   input active-high
        line 12:      unnamed       unused   input active-high
        line 13:      unnamed       unused   input active-high
        line 14:      unnamed       unused   input active-high
        line 15:      unnamed       unused   input active-high
        line 16:      unnamed       unused   input active-high
        line 17:      unnamed       unused   input active-high
        line 18:      unnamed       unused   input active-high
        line 19:      unnamed       unused   input active-high
        line 20:      unnamed       unused   input active-high
        line 21:      unnamed       unused   input active-high
        line 22:      unnamed       unused   input active-high
        line 23:      unnamed       unused   input active-high
        line 24:      unnamed       unused   input active-high
        line 25:      unnamed       unused   input active-high
        line 26:      unnamed       unused   input active-high
        line 27:      unnamed       unused   input active-high
        line 28:      unnamed       unused   input active-high
        line 29:      unnamed       unused   input active-high
        line 30:      unnamed       unused   input active-high
        line 31:      unnamed       unused   input active-high
        line 32:      unnamed       unused   input active-high
        line 33:      unnamed       unused   input active-high
        line 34:      unnamed       unused   input active-high
        line 35:      unnamed       unused   input active-high
        line 36:      unnamed       unused   input active-high
        line 37:      unnamed       unused   input active-high
        line 38:      unnamed       unused   input active-high
        line 39:      unnamed       unused   input active-high
        line 40:      unnamed       unused   input active-high
        line 41:      unnamed       unused   input active-high
        line 42:      unnamed       unused   input active-high
        line 43:      unnamed       unused   input active-high
        line 44:      unnamed       unused   input active-high
        line 45:      unnamed       unused   input active-high
        line 46:      unnamed       unused   input active-high
        line 47:      unnamed       unused   input active-high
        line 48:      unnamed       unused   input active-high
        line 49:      unnamed "am62a-sk:green:heartbeat" output active-high [used]
        line 50:      unnamed       unused   input active-high
        line 51:      unnamed       unused   input active-high
gpiochip4 - 11 lines:
        line   0:      unnamed       unused   input active-high
        line   1:      unnamed       unused   input active-high
        line   2:      unnamed       unused   input active-high
        line   3:      unnamed       unused output active-high
        line   4:      unnamed       unused   input active-high
        line   5:      unnamed       unused output active-high
        line   6:      unnamed       unused   input active-high
        line   7:      unnamed       unused   input active-high
        line   8:      unnamed       unused   input active-high
        line   9:      unnamed       unused   input active-high
        line 10:      unnamed       unused   input active-high
gpiochip5 - 24 lines:
        line   0: "GPIO_CPSW2_RST" unused input active-high
        line   1: "GPIO_CPSW1_RST" unused input active-high
        line   2: "BT_EN_SOC"       unused   input active-high
        line   3: "MMC1_SD_EN" "regulator-3" output active-high [used]
        line   4:     "VPP_EN"       unused   input active-high
        line   5: "EXP_PS_3V3_En" unused input active-high
        line   6: "EXP_PS_5V0_En" unused input active-high
        line   7: "EXP_HAT_DETECT" unused input active-high
        line   8: "GPIO_AUD_RSTn" unused input active-high
        line   9: "GPIO_eMMC_RSTn" unused input active-high
        line 10: "UART1_FET_BUF_EN" unused input active-high
        line 11: "BT_UART_WAKE_SOC" unused input active-high
        line 12: "GPIO_HDMI_RSTn" unused input active-high
        line 13: "CSI_GPIO0"      "reset" output active-high [used]
        line 14: "CSI_GPIO1"       unused   input active-high
        line 15: "WLAN_ALERTn" unused input active-high
        line 16: "HDMI_INTn" "interrupt"   input active-high [used]
        line 17: "TEST_GPIO2"       unused   input active-high
        line 18: "MCASP1_FET_EN" unused input active-high
        line 19: "MCASP1_BUF_BT_EN" unused input active-high
        line 20: "MCASP1_FET_SEL" unused input active-high
        line 21: "UART1_FET_SEL" unused input active-high
        line 22: "PD_I2C_IRQ"       unused   input active-high
        line 23: "IO_EXP_TEST_LED" unused input active-high

0 Anshu Madwesh over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 24325 points

Hi Mickael,

According to the data sheet, MMC2_SDCD has a mux mode of 0 and GPIO0_71 has a mux mode of 7. So if you want to control MMC2_SDCD, then you will have to modify the kernel device tree to add this. Please go to dev.ti.com and enter your device. Then go to Configure Pins and Generate Initialization Code. From there, select MMC2 and add the pins needed and modify the device tree based on these changes.

-Anshu

0 Mickael LE STEPHAN over 3 years ago in reply to Anshu Madwesh

Intellectual 390 points

Ok, thak you.
I followed your procedure, but in this way i only configure one pin ? the device tree generated will be wrong ?
Is it possible to load the default config in this tool and just change what i need (add MMC2_SDCD) ?
Then, what's the next step (a guide perhaps )

0 Anshu Madwesh over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 24325 points

Hi Mickael,

This thread discusses this process: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1180114/sk-am62-linux-processor-sdk-bt_en-pin-iopad-register-details-require-for-sk-am62-e3-device-tree/4444219?tisearch=e2e-sitesearch&keymatch=am62%2520wlan_en#4444219

-Anshu

0 Mickael LE STEPHAN over 3 years ago in reply to Anshu Madwesh

Intellectual 390 points

Ok i will have a look on that tomorrow. Just tell me please, what is Rx checkbox option ?

0 Anshu Madwesh over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 24325 points

Hi Mickael,

Rx checkbox is checking if the pin requires an input buffer or output buffer.
To clarify from before, I believe mux mode 7 should be used.

-Anshu

0 Mickael LE STEPHAN over 3 years ago in reply to Anshu Madwesh

Intellectual 390 points

Hi,

Ok the tools generate some files

AM62A_pinmux.h
AM62A_pinmux_data.c
devicetree.dtsi
PinmuxConfigSummary.csv
untitled.syscfg

Then, i went to <sdk_path>/board-support/linux..../arch/arm64/boot/dts/ti

open the file k3-am62a7-sk.dts and add this to &main_pmx0 {

    mymmc21_pins_default: mymmc21-pins-default {
       pinctrl-single,pins = <
           AM62AX_IOPAD(0x0124, PIN_OUTPUT, 0) /* (F22) MMC2_SDCD */
       >;
   };

But for AM62A_pinmux.h and AM62A_pinmux_data.c i suppose i need to go to <sdk_path>/board-support/u-boot-.../board/ti/am62ax/ but can't find where to put the code of these files !

Can you help please on that ?

Also, if you can describe the entire process to update device tree will be very cool (i loose a lot of time on that part ...)

0 Anshu Madwesh over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 24325 points

Hello Mickael,

After discussing internally, the the solution may not require device tree modifications. The WLAN_EN signal should be enabled upon boot. It is an active low pin and the signal that is pulled down by a resistor. Please see Page 17 on the M.2 schematics under Design Files: https://www.ti.com/tool/SK-AM62A-LP#design-files. Since the signal is enabled, it should only require a connection between the WiFI module and the M.2 Interface on the EVM.

Best Regards,

Anshu

0 Mickael LE STEPHAN over 3 years ago in reply to Anshu Madwesh

Intellectual 390 points

Ok. In that case to accelerate my dev, can you just advise me a module that works without modifications (kernel …) with your evaluation board please ?

0 Anshu Madwesh over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 24325 points

Hi Mickael,

This query will get routed to the WiFi team. Please allow them some time to get back to you.

Best Regards,

Anshu

0 Corinne Meyers over 3 years ago in reply to Mickael LE STEPHAN

TI__Intellectual 2825 points

Hi Mikael,

We have two products that would match your needs. The first is wl18xx which would not require any kernel modifications, however it is not already integrated into an M.2. card. The second option is the CC3301 device which is offered integrated into an M.2. card, but would require kernel modifications as the driver is not upstreamed.

The CC3301 is our latest device and supports Wi-Fi 6. If you need assistance developing with the M.2. CC3301 a request for more information can be made here: https://www.ti.com/licreg/docs/swlicexportcontrol.tsp?form_id=338887&prod_no=CC33XX-DESIGN&ref_url=epd_connect_wcs_CC3301.

WL18xx: www.ti.com/.../WL1837MOD
CC3301: www.ti.com/.../M2-CC3301

Please let me know if you have any further questions.

Best,

Corinne

0 Mickael LE STEPHAN over 3 years ago in reply to Corinne Meyers

Intellectual 390 points

Hi thank you for this informations ! The module CC3301 will be a good solution but as i can see not available from standard distributor ?

Then, in the case of the Infineon (Cypress) CYW4373E module that i have for the moment. The WLAN_EN signal need to be pulled high. As i can see on the laird documentation they have an internal pullup on module. But on the sk-AM62A-LP, there is also a pulldown resistor. To speed up the test i will remove it, can you just confirm me that R12 is the resistor in red in the image below

0 Corinne Meyers over 3 years ago in reply to Mickael LE STEPHAN

TI__Intellectual 2825 points

Hi Mickael,

I'm not sure I understand what you are asking with the standard distributer. Could you please clarify?

Regarding the AM62A question, I'm going to refer you to their team as that is not a product I work with.

Best,
Corinne

0 Anshu Madwesh over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 24325 points

Thank you Corinne for your comments.

Hi Mickael,

Can you explain why you need WLAN_EN signal pulled high and why you want to remove R12?

According to the schematics, the pin is active-low (indicated by #) and the WLAN_EN signal is already low due to pull down resistor. The pin has logic 1 since its active-low. This means that the hardware should not be changed.

Best Regards,

Anshu

0 Mickael LE STEPHAN over 3 years ago in reply to Corinne Meyers

Intellectual 390 points

Hi Corinne,

I mean with standart distributor (RS, digikey, Mouser ...)

0 Mickael LE STEPHAN over 3 years ago in reply to Anshu Madwesh

Intellectual 390 points

Hi Anshu, i need a high signal (electrically speaking) because on my Laird module i need this pin is hight to enable it.

0 Anshu Madwesh over 3 years ago in reply to Mickael LE STEPHAN

TI__Mastermind 24325 points

Hello Mickael,

Let me get back to you. We are discussing internally.

Best Regards,

Anshu

0 Corinne Meyers over 3 years ago in reply to Mickael LE STEPHAN

TI__Intellectual 2825 points

Hi Michael,

We just did an advance launch for the CC3301 this week, therefore full orders won't be accepted until our full launch at the end of the year. If you would like to order samples before then you can do so at the website that I linked above.

Best,

Corinne

0 Mickael LE STEPHAN over 3 years ago in reply to Corinne Meyers

Intellectual 390 points

Hi Corinne and thanks. I filled the request on your website.

0 Mukul Bhatnagar over 3 years ago in reply to Anshu Madwesh

TI__Guru* 86125 points

Hello Mickael

On modifying the SK-AM62A board to make it work with the other vendor solution, you should be able to do whatever mods makes sense to you, but please be careful with the mods, as they will null the warranty of the EVM.

Keep us posted how your experimentation goes and let us know if you need any further help on this.

Regards

Mukul

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