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writing a dts file for porting a CYW43455 wifi/bt module on imx8mevk

Question asked by sandeep kumar yenugula on Oct 3, 2018

Hi All,

 

I am trying to port cyw43455 wifi/bt on imx8mevk. I am able to figure out dts node for bluetooth porting pins but confused when porting wifi related configurations.

Below are the pin and port details I am using

wifi --> sdio

BT --> UART3.

 

HMI NET NAMEIMX8 Pin name
BT_REG_ONNAND_CLE
WL_REG_ONNAND_CE2_B
BT_HOST_WAKENAND_DQS
BT_DEV_WAKENAND_CE1_B
REF_CLK_32KGPIO1_IO00
SD1_CMDSD1_CMD
SD1_DATA0SD1_DATA0
SD1_DATA1SD1_DATA1
SD1_DATA2SD1_DATA2
SD1_DATA3SD1_DATA3
SD1_CLKSD1_CLK
UART3_RXDUART3_RXD
UART3_TXDUART3_TXD
UART3_CTSUART3_RXD
UART3_RTSUART3_TXD
SAI5_RXD1L4
SAI3_TXFSG3
SAI3_TXCC4
SAI3_TXDC3
SAI3_RXDF3

 

Here we are using both 1.8v for VIO and 3.3v for VBAT_LDO, but I don't have any clue how to configure VIO and VBAT in dts file. Please find attached dts prepared for above configuration. Please correct me if anything is wrong and help me how to add vio and vbat configuration in dts.

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