Our main boot sequence :
(1) ROM BOOT -> AT91Bootstrap -> U-Boot -> Linux Kernel.
U-Boot is the stage where we set up the MAC address.
Also we can skip U-Boot and use the following boot sequence :
(2) ROM BOOT -> AT91Boostrap -> Linux Kernel.
Add EEPROMs and nvmem-layout to describe eui48 MAC address region
to be used for case (2).
This series proposes to add EEPROM support and reading MAC addresses
through NVMEM (via Devicetree) for sama7g5ek:
- Add in DT bindings document the EEPROM compatibles :
"microchip,24aa025e48" and "microchip,24aa025e64"
- Update to the driver to support "microchip,24aa025e48" and
"microchip,24aa025e64".
- Added the nodes in devicetree for eeproms where are stored EUI-48 MAC,
and update gmac nodes to read the MAC via devicetree through NVMEM.
-----------------------------------------------------------------------
v3 -> v4:
* dt-bindings: eeprom: at24: Add Microchip 24AA025E48/24AA025E64
- update the rule to select compatible
* eeprom: at24: Add support for Microchip 24AA025E48/24AA025E64 EEPROMs
- Use AT24_CHIP_DATA with AT24_FLAG_READONLY
- drop AT24_CHIP_DATA_CB_AO
- drop AT24_CHIP_DATA_AO
- drop u8 adjoff
- change commit message
* ARM: dts: microchip: at91-sama7g5ek: add EEPROMs
- reword commit message
v2 -> v3:
* dt-bindings: eeprom: at24: Add Microchip 24AA025E48/24AA025E64
- commit subject changed to reference Microchip 24AA025E48/24AA025E64
- drop the pattern: mac02e4$ and mac02e6$ and a-z from regex
- add these two devices down at the bottom
- added Reviewed-by
* eeprom: at24: avoid adjusting offset for 24AA025E{48, 64}
- add specific compatible names according with
https://ww1.microchip.com/downloads/en/DeviceDoc/24AA02E48-24AA025E48-24AA02E64-24AA025E64-Data-Sheet-20002124H.pdf
- add extended macros to initialize the structure with explicit value for adjoff
- drop co-developed-by to maintain the commit history
(chronological order of modifications)
* ARM: dts: at91: at91-sama7g5ek: add EEPROMs
- change from atmel,24mac02e4 to microchip,24aa025e48 to align with the datasheet
- drop co-developed-by to maintain the chronological order of the changes
v1 -> v2:
* dt-bindings: eeprom: at24: Add at24,mac02e4 and at24,mac02e6
- change pattern into "^atmel,(24(c|cs|mac)[a-z0-9]+|spd)$" to keep simpler
* eeprom: at24: avoid adjusting offset for 24AA025E{48, 64}
- no change
* ARM: dts: at91: at91-sama7g5ek: add EEPROMs
- remove unnecessary #address-cells #size-cells
-----------------------------------------------------------------------
Andrei Simion (1):
dt-bindings: eeprom: at24: Add Microchip 24AA025E48/24AA025E64
Claudiu Beznea (2):
eeprom: at24: Add support for Microchip 24AA025E48/24AA025E64 EEPROMs
ARM: dts: microchip: at91-sama7g5ek: add EEPROMs
.../devicetree/bindings/eeprom/at24.yaml | 8 +++-
.../arm/boot/dts/microchip/at91-sama7g5ek.dts | 40 +++++++++++++++++++
drivers/misc/eeprom/at24.c | 8 ++++
3 files changed, 55 insertions(+), 1 deletion(-)
base-commit: 0b58e108042b0ed28a71cd7edf5175999955b233
--
2.34.1
