i.MX ProcessorsのトピックIMX6SX SDB

IMX6SX SDB

hyoungkikim — Mon, 27 Feb 2023 07:08:51 GMT

Hi experts

i am designing a custom board based on imx6sx sdb

i want to a custom board to boot from QSPI flash on QSPI1 but QSPI2 ( which is a case of imx6sx sdb)

i have some questions in moving QSPI2A flash (from SDB) to QSPIA

1. on imx6sx sdb there is a "PMIC_INT_B" which connected between cpu and pmic

but i can't find any source in u-boot and kernel, there is no irq related source in pmic driver

what does the PMIC_INT_B do ? if i missed something , let me know

2. in u-boot there is a qspi_header , do i need to modify that file ?

in qspi_header ," the Serial Flash Port B selection " and "CS1 on Port A" , i can't understand what they do

in which situation should i use that configuration ?

3 in QSPI booting, QSPIA/B , SS0,SS1 are all supported ?

thank you

Re: IMX6SX SDB

Sanket_Parekh — Fri, 03 Mar 2023 12:22:30 GMT

Hi @hyoungkikim

I hope you are doing well

Please find the answer below.

1) PMIC_INT_B is an interrupt signal, when this pin is low interrupt will be generated.

Please refer to section 6.5.3 Interrupt handling from the datasheet.

2) For the configuration of QSPI one can refer the section 8.6.3 QuadSPI configuration parameters from the reference manual.

3) Yes, For more details kindly refer to Table 8-27. QSPI IOMUX pin configuration in the Reference manual.

for more information, one can refer below thread.

iMX6SX QSPI boot

Booting U-boot on i.MX6 Solo X from QSPI on SABRE-SD

Thanks & Regards

Sanket Parekh

Re: IMX6SX SDB

hyoungkikim — Mon, 06 Mar 2023 09:56:44 GMT

Hi Sanket_Parekh

your reply about QSPI will be of great help

about PMIC_INT_B does u-boot and kernel from LF_v5.15.52-2.1.0 use that PIN ?

i couldn't find any source about it , i want to use QSPI1 as boot device , so i tried to find QSPI1 Pin related source and remove or commnet out , i almost found them except PMIC_INT_B

thank you

sincerely

Re: IMX6SX SDB

Sanket_Parekh — Tue, 14 Mar 2023 07:27:26 GMT

Hi @hyoungkikim

I hope you are doing well

Yes, there is no such reference in the uboot or kernel as the PMIC_INT_B pin is related to the PMIC. We don't think so there is anything to do with this pin for the QSPI boot.

Thanks & Regards

Sanket Parekh