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Rob Herring (Arm)

PROFILE

Rob Herring (arm)

Rob Herring contributed to device tree modernization and kernel development across repositories such as geerlingguy/linux, torvalds/linux, analogdevicesinc/linux, and linux-riscv/linux. He focused on migrating device tree bindings to YAML schema, improving validation and maintainability for embedded systems. Rob enhanced hardware compatibility by refactoring bindings for PCIe, GPIO, and memory controllers, and addressed platform-specific issues like memory region handling and interrupt topology. Using C, YAML, and DTS, he delivered schema-driven configuration management and documentation improvements. His work reduced integration risk, streamlined onboarding for new hardware, and ensured more robust device tree structures, reflecting a deep understanding of kernel infrastructure.

Overall Statistics

Feature vs Bugs

65%Features

Repository Contributions

54Total
Bugs
7
Commits
54
Features
13
Lines of code
4,851
Activity Months5

Work History

October 2025

2 Commits • 2 Features

Oct 1, 2025

October 2025 monthly summary for linux-riscv/linux: Delivered two feature-driven improvements focused on patch submission efficiency and device tree maintainability. Patchwork URL migration to kernel.org enhances submission performance and leverages kernel.org's patchwork capabilities. Migration of the APM X-Gene slimpro-i2c device tree binding to YAML schema improves validation and maintainability. No major bugs fixed this month. Overall impact includes faster patch processing, stronger validation, and reduced maintenance risk, enabling smoother DT changes and quicker integration cycles. Technologies demonstrated include kernel.org Patchwork integration, DT schema evolution with YAML, and meticulous commit-level traceability with maintainers-focused workflow changes.

September 2025

16 Commits • 3 Features

Sep 1, 2025

September 2025 monthly summary for linux-riscv/linux: Key features delivered include Device Tree Bindings Schema Modernization and Clock Bindings Improvements, SPDIF Device Tree Bindings Port and Standards, and SlimPro Device Tree Structural Reorganization, along with Bindings/Documentation Cleanup. Major bugs fixed include cleanup of duplicates and outdated docs to improve clarity and maintenance. Overall impact: improved correctness, consistency, and maintainability of Device Tree bindings across the platform, reducing onboarding time for new hardware and lowering platform bring-up risk. Technologies/skills demonstrated: Device Tree bindings and schema modernization, OF graph port bindings, ASoC SPDIF integration, Linux ARM64 DT work, cross-subsystem coordination, and repository-level refactoring.

August 2025

7 Commits • 2 Features

Aug 1, 2025

August 2025 performance summary focusing on device-tree stabilization, schema migrations, and platform-specific DT cleanups across geerlingguy/linux and torvalds/linux, delivering business value through more reliable hardware boot, reduced maintenance burden, and stronger documentation.

July 2025

28 Commits • 6 Features

Jul 1, 2025

Monthly summary for 2025-07: Delivered reliability hardening for memory regions, modernized device-tree bindings, and expanded cross-vendor hardware support to accelerate onboarding and reduce maintenance overhead. Key outcomes include: 1) SPI: stm32-ospi memory-region handling fixed using of_reserved_mem_region_to_resource(), increasing reliability of memory-mapped SPI operations. 2) Arm64 DTS: nuvoton npcm8xx: Dropped the GIC 'ppi-partitions' node to simplify interrupt topology and improve boot stability. 3) PCIe DT bindings: Converted PCIe bindings to DT schema for multiple devices (st,spear1340-pcie; axis,artpec6-pcie; apm,xgene-pcie; marvell,armada-3700-pcie; amazon,al-alpine-v[23]-pcie) and removed the outdated 83xx-512x-pci binding, enabling consistent device-tree usage. 4) GPIO DT schema conversions: Converted GPIO bindings to DT schema across multiple vendors and added missing mpc8xxx compatibles, improving cross-vendor interoperability. 5) Interrupt-controller: MSI DT schema conversion for apm,xgene1-msi, enabling standardized interrupt handling. These changes collectively improve hardware compatibility, reduce integration risk, and support faster feature adoption across architectures and vendors.

February 2025

1 Commits

Feb 1, 2025

February 2025 monthly summary for analogdevicesinc/linux: Delivered a critical fix to Arasan NAND device tree bindings, tightening schema validation to prevent misconfigurations and improve deployment reliability. All changes are tracked under the commit eff9f97ecd2d12ebe619ed5349b388ab487ab2b3 in the MTD bindings for Arasan NAND controller.

Activity

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Quality Metrics

Correctness99.8%
Maintainability99.6%
Architecture99.6%
Performance94.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

CDTSDevice TreeShellTextYAMLplaintexttextyaml

Technical Skills

ARM architectureConfiguration ManagementDevice DriversDevice TreeDevice Tree BindingsDocumentationEmbedded SystemsGPU architectureHardware DescriptionKernel DevelopmentLinux kernel developmentMemory ManagementSchema DefinitionSystem ProgrammingYAML

Repositories Contributed To

4 repos

Overview of all repositories you've contributed to across your timeline

geerlingguy/linux

Jul 2025 Aug 2025
2 Months active

Languages Used

CDevice TreeYAMLtextyaml

Technical Skills

Device DriversDevice TreeDevice Tree BindingsDocumentationEmbedded SystemsHardware Description

linux-riscv/linux

Sep 2025 Oct 2025
2 Months active

Languages Used

CDTSTextYAMLplaintextyamlShell

Technical Skills

ARM architectureDevice TreeEmbedded SystemsGPU architectureKernel DevelopmentLinux kernel development

torvalds/linux

Aug 2025 Aug 2025
1 Month active

Languages Used

DTSYAML

Technical Skills

ARM architectureLinux kernel developmentdevice tree bindingsdevice tree developmentdevice tree managementembedded systems

analogdevicesinc/linux

Feb 2025 Feb 2025
1 Month active

Languages Used

yaml

Technical Skills

Device TreeEmbedded Systems

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