| Message ID | 20241206212559.192705-1-john.madieu.xa@bp.renesas.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | soc: renesas: Add system controller support for RZ/G3E SoC | expand |
On Fri, Dec 06, 2024 at 10:25:54PM +0100, John Madieu wrote: > This patch series adds support for the RZ/G3E system controller and extends > the existing RZ/V2H(P) system controller to support syscon. The RZ/G3E > system controller allows detecting various SoC features like core count, > NPU availability, and CA55 PLL configuration. > > Key features: > - Syscon support for both RZ/V2H and RZ/G3E system controllers > - Detection of quad/dual core configuration > - Detection of Ethos-U55 NPU presence > - Validation of CA55 PLL frequency setting > - SoC-specific extended identification through callbacks This series and some other questions about syscon prompted me to look into syscon driver a bit. Consider this resulting series[1] in context with your changes. Rob [1] https://lore.kernel.org/all/20241211-syscon-fixes-v1-3-b5ac8c219e96@kernel.org/
This patch series adds support for the RZ/G3E system controller and extends the existing RZ/V2H(P) system controller to support syscon. The RZ/G3E system controller allows detecting various SoC features like core count, NPU availability, and CA55 PLL configuration. Key features: - Syscon support for both RZ/V2H and RZ/G3E system controllers - Detection of quad/dual core configuration - Detection of Ethos-U55 NPU presence - Validation of CA55 PLL frequency setting - SoC-specific extended identification through callbacks This patch series depends upon [1] and [2]. Tested: - Example of SoC detection: [ 0.065608] renesas-rz-sysc 10430000.system-controller: Detected Renesas Quad Core RZ/G3E r9a09g047 Rev 0 with Ethos-U55 - Example of PLL misconfiguration warning: [ 0.065616] renesas-rz-sysc 10430000.system-controller: CA55 PLL is not set to 1.7GHz [1] https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=914097 [2] https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=912697 John Madieu (5): dt-bindings: arm: renesas: Add syscon compatibility to RZ/V2H(P) SYS Controller dt-bindings: soc: renesas: Document Renesas RZ/G3E SoC variants soc: renesas: rz-sysc: Add support for RZ/G3E family arm64: dts: renesas: r9a09g047: add sys node arm64: dts: renesas: r9a09g057: Add syscon compatibility to sys node .../soc/renesas/renesas,r9a09g057-sys.yaml | 8 ++- arch/arm64/boot/dts/renesas/r9a09g047.dtsi | 7 ++ arch/arm64/boot/dts/renesas/r9a09g057.dtsi | 2 +- drivers/soc/renesas/Kconfig | 6 ++ drivers/soc/renesas/Makefile | 1 + drivers/soc/renesas/r9a09g047-sysc.c | 70 +++++++++++++++++++ drivers/soc/renesas/rz-sysc.c | 44 ++++++++---- drivers/soc/renesas/rz-sysc.h | 7 ++ 8 files changed, 128 insertions(+), 17 deletions(-) create mode 100644 drivers/soc/renesas/r9a09g047-sysc.c