Messages in this thread | | | From | Stefan Wahren <> | Subject | [PATCH 0/2] gpiolib: of: Introduce hook for missing gpio-ranges | Date | Sat, 9 Apr 2022 11:51:27 +0200 |
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This patch series tries to provide backward compatibility for DTB which lacks the gpio-ranges property.
The commit ("pinctrl: msm: fix gpio-hog related boot issues") by Christian Lamparter already contains a fallback in case the gpio-ranges property is missing. But this approach doesn't work on BCM2835 with a gpio-hog defined for the SoC GPIOs.
Based Christian's on explanation i conclude that the fallback must happen during the gpiochip_add() call and not afterwards. So the approach is to call an optional hook, which can be implemented in the platform driver.
This series has been tested on Raspberry Pi 3 B Plus.
Changes since RFC: - just add all collected Fixes, Reviewed-by, Tested-by and Acked-by
Stefan Wahren (2): gpiolib: of: Introduce hook for missing gpio-ranges pinctrl: bcm2835: implement hook for missing gpio-ranges
drivers/gpio/gpiolib-of.c | 5 +++++ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 18 ++++++++++++++++++ include/linux/gpio/driver.h | 12 ++++++++++++ 3 files changed, 35 insertions(+)
-- 2.25.1
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