Re: [PATCH 0/9] arm: hpe: Add HPE GSC (Gen12) BMC SoC support

[Tom Rini <trini@konsulko.com>]

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On Wed, Apr 08, 2026 at 07:24:12PM +0000, Jorge Cisneros wrote:

> This series adds support for the HPE GSC (Gen Server Controller), an
> ARM64-based BMC SoC used in HPE ProLiant and Synergy Gen12 servers.
> 
> The GSC is the successor to the GXP SoC (already upstream) used in
> Gen11 servers. It features dual Cortex-A35 cores with GICv3, a Denali
> DDR memory controller, Cadence GEM Ethernet (SGMII), and reuses several
> GXP IP blocks (timer, SPI, I2C).
> 
> The existing ARCH_GXP Kconfig symbol is renamed to ARCH_HPE to serve as
> an umbrella for both the GXP (ARMv7) and GSC (ARMv8) SoC variants,
> selected via a choice menu under mach-hpe.
> 
> New drivers:
> - Watchdog (drivers/watchdog/gsc_wdt.c)
> - Memory-mapped virtual EEPROM for VPD (drivers/misc/gsc_mem_eeprom.c)
> - Cadence GEM support added to the existing MACB driver
> 
> Board support includes DRAM sizing from the Denali memory controller,
> MAC address provisioning from VPD EEPROM, FDT fixups for network
> configuration, shared Ethernet/DisplayPort PHY initialization, and a
> server_id command for reading server identification from the CPLD.
> 
> Notes:
> - The server_id command (patch 7) is hardware-specific and reads from
>   GSC CPLD registers, so no sandbox test is included.
> - MAINTAINERS warnings in patches 1-8 are resolved by patch 9.
> 
> Based on v2026.04-rc4 (ba7bf918dafcd093ad733b07ba490baeb20cf5da).
> Tested: both gxp_defconfig and gsc_defconfig build cleanly.

Thanks for posting this. I have just a few comments to follow.

-- 
Tom

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