[PATCH v3 11/16] board: ti: j784s4: Add support for board detection by EEPROM read

Nishanth Menon nm at ti.com
Fri Sep 8 19:03:46 CEST 2023


On 10:59-20230908, Andrew Davis wrote:
> On 9/8/23 9:42 AM, Nishanth Menon wrote:
> > On 16:35-20230908, Apurva Nandan wrote:
> > > From: Dasnavis Sabiya <sabiya.d at ti.com>
> > > 
> > > The board name is programmed in the EEPROM. Add support for board
> > > detection and choose the right dtb based on the board name read
> > > from EEPROM.
> > > 
> > > The J784S4/AM69 has two platforms naming J784S4-EVM and AM69-SK. The
> > > J784S4 has EEPROM populated at 0x50. AM69 SK has EEPROM
> > > populated at next address 0x51. So start looking for TI specific EEPROM
> > > at 0x50, if not found look for EEPROM at 0x51.
> > > 
> > > Also, add support for setup_serial() to read the serial number from EEPROM
> > > and update the serial environment variable with the same.
> > > 
> > > Signed-off-by: Dasnavis Sabiya <sabiya.d at ti.com>
> > > Signed-off-by: Apurva Nandan <a-nandan at ti.com>
> > 
> > 
> > NAK. go with the approach similar to AM62x. AM69-SK has it's own
> > fragment.
> > 
> 
> NAK to your NAK, there is no reason to introduce more fragments here
> when both boards can be supported with one defconfig.

Sorry, but no. the evm.c has become a mess. Time to stop it is in the
introduction itself

Need the eeprom stuff clearly pulled out of evm.c -> evm.c should still
work with CONFIG_EEPROM_DETECT disabled and should be board independent.

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D


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