This adds a pin control driver created by Emil for the T-Head TH1520 RISC-V SoC used on the Lichee Pi 4A and BeagleV Ahead boards and updates the device trees to make use of it. Emil's series from January used separate compatibles for each pin controller instance. Rob did not think this was appropriate because the programming model is the same for each instance. This series takes a different approach by adding a thead,pad-group device tree property to select the pad group for a given pin controller instance. Changes in v2: - Add thead,pad-group device tree property - Change driver to use the thead,pad-group property instead of the unit address to identify the pad group of the pin controller being probed - Return -EINVAL if no pin group can be determined during probe. In v1, there was a bug that instead returned an unitialized variable - Link to v1: https://lore.kernel.org/r/20240902-th1520-pinctrl-v1-0-639bf83ef50a@xxxxxxxxxxxxxxx Signed-off-by: Drew Fustini <dfustini@xxxxxxxxxxxxxxx> --- Emil Renner Berthing (8): dt-bindings: pinctrl: Add thead,th1520-pinctrl bindings pinctrl: Add driver for the T-Head TH1520 SoC riscv: dts: thead: Add TH1520 pin control nodes riscv: dts: thead: Add TH1520 GPIO ranges riscv: dts: thead: Adjust TH1520 GPIO labels riscv: dts: thead: Add Lichee Pi 4M GPIO line names riscv: dts: thead: Add TH1520 pinctrl settings for UART0 riscv: dtb: thead: Add BeagleV Ahead LEDs .../bindings/pinctrl/thead,th1520-pinctrl.yaml | 176 ++++ MAINTAINERS | 2 + arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts | 87 ++ .../boot/dts/thead/th1520-lichee-module-4a.dtsi | 43 + arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts | 28 + arch/riscv/boot/dts/thead/th1520.dtsi | 65 +- drivers/pinctrl/Kconfig | 13 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-th1520.c | 911 +++++++++++++++++++++ 9 files changed, 1310 insertions(+), 16 deletions(-) --- base-commit: 5be63fc19fcaa4c236b307420483578a56986a37 change-id: 20240902-th1520-pinctrl-d71de44acc66 Best regards, -- Drew Fustini <dfustini@xxxxxxxxxxxxxxx>
