This patch series extends the support for the Renesas RZ/G2L SMARC EVK board (based on the R9A07G044L2 SoC) to include the following new features:
* I2C bus support, including automatic deblocking if SDA is stuck low due to another device on the board.
* Basic PMIC support, with the ability to read, write & dump PMIC registers.
* Support for requesting system reset (SYSRESET_COLD or SYSRESET_POWER) via the PMIC.
Along the way we fix the CPG driver to confirm all clock & reset changes before returning, and update the device tree to align with Linux 6.7.
This series has been tested on RZ/G2L hardware, and the full u-boot GitLab CI pipeline has been executed in our internal GitLab instance.
Changes from v1: * Rebased on U-Boot v2024.04-rc2 and re-tested. * Sync with Linux v6.7 instead of v6.6. * Add raa215300_bind() as a stub in patch 4. * Split up the addition of sysreset support into 3 patches: patch 5 adds the driver, patch 6 binds it with the pmic driver and patch 7 enables sysreset for the RZ/G2L.
Paul Barker (7): clk: renesas: Confirm all clock & reset changes on RZ/G2L arm: dts: rzg2l: Sync with Linux v6.7 i2c: rzg2l: Add I2C driver for RZ/G2L family pmic: Add Renesas RAA215300 PMIC driver sysreset: Support reset via Renesas RAA215300 PMIC pmic: raa215300: Bind sysreset driver board: rzg2l: Support reset via Renesas RAA215300 PMIC
arch/arm/dts/r9a07g044.dtsi | 16 +- arch/arm/dts/r9a07g044l2-smarc.dts | 21 + arch/arm/dts/rz-smarc-common.dtsi | 18 +- arch/arm/dts/rzg2l-smarc-pinfunction.dtsi | 20 + arch/arm/dts/rzg2l-smarc-som.dtsi | 22 +- arch/arm/dts/rzg2l-smarc.dtsi | 43 +- arch/arm/mach-rmobile/Kconfig | 1 + board/renesas/rzg2l/rzg2l.c | 8 - configs/renesas_rzg2l_smarc_defconfig | 7 + drivers/clk/renesas/rzg2l-cpg.c | 17 +- drivers/i2c/Kconfig | 7 + drivers/i2c/Makefile | 1 + drivers/i2c/rz_riic.c | 624 ++++++++++++++++++++++ drivers/power/pmic/Kconfig | 9 + drivers/power/pmic/Makefile | 1 + drivers/power/pmic/raa215300.c | 50 ++ drivers/sysreset/Kconfig | 6 + drivers/sysreset/Makefile | 1 + drivers/sysreset/sysreset_raa215300.c | 58 ++ 19 files changed, 896 insertions(+), 34 deletions(-) create mode 100644 drivers/i2c/rz_riic.c create mode 100644 drivers/power/pmic/raa215300.c create mode 100644 drivers/sysreset/sysreset_raa215300.c
base-commit: 37345abb97ef0dd9c50a03b2a72617612dcae585