[PATCH v2 0/3] Add I2C support on TH1520

[Thomas Bonnefille]

This adds I2C support in the device tree of the T-Head TH1520 RISCV-SoC
and a default configuration for the BeagleV-Ahead. It appears that the
TH1520 I2C is already supported in the upstream kernel through the
Synopsis Designware I2C adapter driver.

This patch depends on the clock patch from Drew Fustini
Link: https://lore.kernel.org/linux-riscv/20240426-th1520-clk-v2-v2-0-96b829e6fcee@tenstorrent.com
and the pinctrl patch from Emil Renner Berthing
Link: https://lore.kernel.org/linux-riscv/20240103132852.298964-1-emil.renner.berthing@canonical.com

Changed from v1:
1. Remove redundant example for Synopsis DesignWare-I2C bindings
2. Remove Node Ordering commit as it has already been taken
3. Remove EEPROM label
4. Rebase on pinctrl and clock driver patches
5. Add pinctrl configuration
6. Replaced the fixed-clock with a correct configuration

Signed-off-by: Thomas Bonnefille <thomas.bonnefille at bootlin.com>
---
Thomas Bonnefille (3):
      dt-bindings: i2c: dw: Document compatible thead,th1520-i2c
      riscv: dts: thead: Add TH1520 I2C nodes
      riscv: dts: thead: Enable I2C on the BeagleV-Ahead

 .../bindings/i2c/snps,designware-i2c.yaml          |  4 ++
 arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts | 84 ++++++++++++++++++++++
 arch/riscv/boot/dts/thead/th1520.dtsi              | 50 +++++++++++++
 3 files changed, 138 insertions(+)
---
base-commit: e1fb0b71c746f863fa49ff359d58c949538ce181
change-id: 20240425-i2c-th1520-fc3ce1a8b472

Best regards,
-- 
Thomas Bonnefille <thomas.bonnefille at bootlin.com>