Hi, This patch series reworks the Nomadik GPIO driver to bring it up to date to current kernel standards. We then add Mobileye EyeQ5 support that uses the same IP block but with limited functionality. We also add features required by our newly supported platform: - Dynamic GPIO ID allocation; - Make clock optional; - Shared IRQ (usecase: EyeQ5 has two banks using the same IRQ); - Handle variadic GPIO counts (usecase: EyeQ5 has <32 GPIOs per bank); - Grab optional reset at probe (usecase: EyeQ5 has a reset available). This GPIO platform driver was previously declared & registered inside drivers/pinctrl/nomadik/pinctrl-nomadik.c, side-by-side with the pinctrl driver. Both are tightly integrated, mostly for muxing reasons. Now that gpio-nomadik is used for another platform, we loosen the relationship. The behavior should not change on already supported hardware but I do not have Nomadik hardware to test for that. We have some dependencies, kept neatly to the end. Those are: - The base platform support series from Grégory [1]. This relates to the last four patches (20 thru 23), ie defconfig and devicetree. - The OLB syscon support series [0]. It provides reset and pinctrl nodes inside the devicetree. This relates to the last two patches (22 and 23), ie resets and gpio-ranges DT props. GPIO works fine without it if patches 22 and 23 are dropped. This has been tested on the EyeQ5 hardware, with the two parent series applied. It also works fine without the OLB syscon series when our last two patches are removed. It has been built on both Arm defconfigs that rely on pinctrl-nomadik: nhk8815_defconfig and u8500_defconfig. I don't have any Nomadik hardware to test though. Have a nice day, Théo [0]: https://lore.kernel.org/lkml/20240212-mbly-clk-v6-0-c46fa1f93839@xxxxxxxxxxx/ [1]: https://lore.kernel.org/lkml/20240205153503.574468-1-gregory.clement@xxxxxxxxxxx/ Signed-off-by: Théo Lebrun <theo.lebrun@xxxxxxxxxxx> --- Théo Lebrun (23): dt-bindings: gpio: nomadik: convert into yaml format dt-bindings: gpio: nomadik: add optional ngpios property dt-bindings: gpio: nomadik: add mobileye,eyeq5-gpio compatible dt-bindings: gpio: nomadik: add optional reset property gpio: nomadik: extract GPIO platform driver from drivers/pinctrl/nomadik/ pinctrl: nomadik: fix build warning (-Wformat) pinctrl: nomadik: fix build warning (-Wpointer-to-int-cast) pinctrl: nomadik: minimise indentation in probe pinctrl: nomadik: follow type-system kernel coding conventions pinctrl: nomadik: follow whitespace kernel coding conventions pinctrl: nomadik: follow conditional kernel coding conventions gpio: nomadik: request dynamic ID allocation gpio: nomadik: fix offset bug in nmk_pmx_set() gpio: nomadik: make clock optional gpio: nomadik: change driver name from gpio to gpio-nomadik gpio: nomadik: support shared GPIO IRQs gpio: nomadik: handle variadic GPIO count gpio: nomadik: support mobileye,eyeq5-gpio gpio: nomadik: grab optional reset control and deassert it at probe MIPS: eyeq5_defconfig: enable GPIO by default MIPS: mobileye: eyeq5: add two GPIO bank nodes MIPS: mobileye: eyeq5: add resets to GPIO banks MIPS: mobileye: eyeq5: map GPIOs to pins using gpio-ranges .../devicetree/bindings/gpio/gpio-nmk.txt | 31 - .../devicetree/bindings/gpio/st,nomadik-gpio.yaml | 96 +++ MAINTAINERS | 2 + arch/mips/boot/dts/mobileye/eyeq5.dtsi | 30 + arch/mips/configs/eyeq5_defconfig | 2 + drivers/gpio/Kconfig | 13 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-nomadik.c | 725 ++++++++++++++++ drivers/pinctrl/nomadik/Kconfig | 5 +- drivers/pinctrl/nomadik/pinctrl-nomadik-db8500.c | 3 +- drivers/pinctrl/nomadik/pinctrl-nomadik-stn8815.c | 3 +- drivers/pinctrl/nomadik/pinctrl-nomadik.c | 938 +++------------------ .../linux/gpio/gpio-nomadik.h | 124 ++- 13 files changed, 1118 insertions(+), 855 deletions(-) --- base-commit: d55aa725e32849f709b61eab3b7a50b810a71a84 change-id: 20231023-mbly-gpio-a30571ec3283 Best regards, -- Théo Lebrun <theo.lebrun@xxxxxxxxxxx>
