topic Re: How to access SGMII MDIO Register? in T-Series

How to access SGMII MDIO Register?

kimpilyeon — Thu, 30 Aug 2018 09:45:21 GMT

I using T2080 processor.

I want to know method that access to MDIO_SGMII_CR, SR, register etc.

PCS MDIO register. clause 22 mode.

Currently, SGMIInCR1[MDEV_PORT] value matches the Ethernet MAC PHY address
(MDIO_CTL[PHY_ADDR]). value is 0x0.

MDIO_SGMII_CR address offset is '0x0' in T2080RM datasheet.

But I want to know physical address of MDIO_SGMII_CR registers.

please help me.

Re: How to access SGMII MDIO Register?

yipingwang — Tue, 11 Sep 2018 11:41:40 GMT

Hello kim pilyeon,

mdio read <PHY address> <REGISTER Address>

Example:
=> mdio read eTSEC1 1
Reading from bus FSL_MDIO0
PHY at address 2:
1 - 0x796d

On T2080RDB

=> mdio list
FSL_MDIO0:
1 - RealTek RTL8211E <--> FM1@DTSEC3
2 - RealTek RTL8211E <--> FM1@DTSEC4
FM_TGEC_MDIO:
0 - Aquantia AQ1202 <--> FM1@TGEC3
1 - Aquantia AQ1202 <--> FM1@TGEC4
c - Cortina CS4315/CS4340 <--> FM1@TGEC1
d - Cortina CS4315/CS4340 <--> FM1@TGEC2

=> mdio read FM1@DTSEC3 8000
Reading from bus FSL_MDIO0
PHY at address 1:
32768 - 0x1140

Have a great day,
TIC

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Re: How to access SGMII MDIO Register?

kimpilyeon — Tue, 18 Sep 2018 07:39:52 GMT

Hello.

Thanks for your answer.

currently, I coding BSP and Drivers for T2080.

so, I can't used above command. like 'mdio read'.

I want to know accessible address or accessible method.

0xf_fe4f_c000 or 0xf_fee_1000 ?

both address describe mdio address in datasheet.

please help me.