doc: Add changelog for 1.1 release

Author: phsauter

CHANGELOG.md

@@ -0,0 +1,49 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+It is updated on each new release based on contributions since the last release.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project loosely follows to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+
+## 1.1.0 - 2025-05-07
+
+### Added
+
+- sw: add various peripheral functions
+- sw: add expanded helloworld as peripheral test
+- pdk: add ETHZ cockpit integration
+- openroad: add startup script for ease-of-use
+- openroad: add parasitic extraction
+- ci: add short synthesis and simulation flows
+- ci: add long end-to-end flow
+- ci: add artistic rendering flow
+- openroad: add hierarchical area report
+
+### Changed
+
+- hw: make SRAM pin `A_DLY` configurable (used to be tied to low when datasheet recommends tie to high)  
+**IMPORTANT: This bug may create SRAM-internal timing violations; update strongly recommended**
+- hw: update OBI dependency
+  - avoid explicit use of `r_optional` assignments
+  - fix index width calculations for mux/demux etc
+- hw: update common_cells dependency
+- yosys: move configurations from makefrags to `yosys_synthesis.tcl`
+- yosys: add a default croc.flist
+
+### Fixed
+
+- hw: fix OBI connections to timer peripheral
+- hw: various fixes to reduce warnings (Yosys, yosys-slang, Verilator)
+- openroad: fix LVS netlist
+- sw: fix linker script
+-test: fix uninitialized memory
+- verilator: speedup compile and synthesis
+- bender: fix cve2 vendor dependency
+
+## 1.0.0 - 2024-12-05
+
+### Added
+
+- Initial versioned release of the project

README.md

@@ -10,6 +10,10 @@ Croc was sucesfully taped out in Nov 2024. The chip is called [MLEM](http://asic
 MLEM was designed and prepared for tapeout by ETHZ students as a bachelor project. The exact code and scripts used for the tapeout can be seen in the frozen [mlem-tapeout](https://github.com/pulp-platform/croc/tree/mlem-tapeout) branch.
 
 
+**IMPORTANT: Update to 1.1 recommended.**  
+Release 1.1 and newer includes a fix for the SRAMs where the `A_DLY` pin was tied low instead of high. The pin controls internal timings and the old version may create violations for some SRAMs.  
+
+
 ## Architecture
 
 ![Croc block diagram](doc/croc_arch.svg)