kernel/linux.git/drivers/pinctrl/meson, branch v5.15.208

pinctrl: meson: mark the GPIO controller as sleeping

2026-02-06T15:42:06+00:00

[ Upstream commit 28f24068387169722b508bba6b5257cb68b86e74 ] The GPIO controller is configured as non-sleeping but it uses generic pinctrl helpers which use a mutex for synchronization. This can cause the following lockdep splat with shared GPIOs enabled on boards which have multiple devices using the same GPIO: BUG: sleeping function called from invalid context at kernel/locking/mutex.c:591 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 142, name: kworker/u25:3 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. irq event stamp: 46379 hardirqs last enabled at (46379): [] _raw_spin_unlock_irqrestore+0x74/0x78 hardirqs last disabled at (46378): [] _raw_spin_lock_irqsave+0x84/0x88 softirqs last enabled at (46330): [] handle_softirqs+0x4c4/0x4dc softirqs last disabled at (46295): [] __do_softirq+0x14/0x20 CPU: 1 UID: 0 PID: 142 Comm: kworker/u25:3 Tainted: G C 6.19.0-rc4-next-20260105+ #11963 PREEMPT Tainted: [C]=CRAP Hardware name: Khadas VIM3 (DT) Workqueue: events_unbound deferred_probe_work_func Call trace: show_stack+0x18/0x24 (C) dump_stack_lvl+0x90/0xd0 dump_stack+0x18/0x24 __might_resched+0x144/0x248 __might_sleep+0x48/0x98 __mutex_lock+0x5c/0x894 mutex_lock_nested+0x24/0x30 pinctrl_get_device_gpio_range+0x44/0x128 pinctrl_gpio_set_config+0x40/0xdc gpiochip_generic_config+0x28/0x3c gpio_do_set_config+0xa8/0x194 gpiod_set_config+0x34/0xfc gpio_shared_proxy_set_config+0x6c/0xfc [gpio_shared_proxy] gpio_do_set_config+0xa8/0x194 gpiod_set_transitory+0x4c/0xf0 gpiod_configure_flags+0xa4/0x480 gpiod_find_and_request+0x1a0/0x574 gpiod_get_index+0x58/0x84 devm_gpiod_get_index+0x20/0xb4 devm_gpiod_get+0x18/0x24 mmc_pwrseq_emmc_probe+0x40/0xb8 platform_probe+0x5c/0xac really_probe+0xbc/0x298 __driver_probe_device+0x78/0x12c driver_probe_device+0xdc/0x164 __device_attach_driver+0xb8/0x138 bus_for_each_drv+0x80/0xdc __device_attach+0xa8/0x1b0 Fixes: 6ac730951104 ("pinctrl: add driver for Amlogic Meson SoCs") Cc: stable@vger.kernel.org Reported-by: Marek Szyprowski Closes: https://lore.kernel.org/all/00107523-7737-4b92-a785-14ce4e93b8cb@samsung.com/ Signed-off-by: Bartosz Golaszewski Reviewed-by: Martin Blumenstingl Reviewed-by: Neil Armstrong Signed-off-by: Linus Walleij [ Adjust context ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

pinctrl: meson-gxl: add missing i2c_d pinmux

2025-10-19T14:21:30+00:00

[ Upstream commit d8c2a9edd181f0cc4a66eec954b3d8f6a1d954a7 ] Amlogic GXL has 4 I2C attached to gpio-periphs. I2C_D is on GPIOX_10/11. Add the relevant func 3 pinmux per the datasheet for S805X/S905X/S905D. Fixes: 0f15f500ff2c ("pinctrl: meson: Add GXL pinctrl definitions") Signed-off-by: Da Xue Link: https://lore.kernel.org/20250821233335.1707559-1-da@libre.computer Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin

pinctrl: meson: define the pull up/down resistor value as 60 kOhm

2025-06-04T12:38:04+00:00

[ Upstream commit e56088a13708757da68ad035269d69b93ac8c389 ] The public datasheets of the following Amlogic SoCs describe a typical resistor value for the built-in pull up/down resistor: - Meson8/8b/8m2: not documented - GXBB (S905): 60 kOhm - GXL (S905X): 60 kOhm - GXM (S912): 60 kOhm - G12B (S922X): 60 kOhm - SM1 (S905D3): 60 kOhm The public G12B and SM1 datasheets additionally state min and max values: - min value: 50 kOhm for both, pull-up and pull-down - max value for the pull-up: 70 kOhm - max value for the pull-down: 130 kOhm Use 60 kOhm in the pinctrl-meson driver as well so it's shown in the debugfs output. It may not be accurate for Meson8/8b/8m2 but in reality 60 kOhm is closer to the actual value than 1 Ohm. Signed-off-by: Martin Blumenstingl Reviewed-by: Neil Armstrong Link: https://lore.kernel.org/20250329190132.855196-1-martin.blumenstingl@googlemail.com Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin

pinctrl/meson: fix typo in PDM's pin name

2024-05-17T09:50:45+00:00

[ Upstream commit 368a90e651faeeb7049a876599cf2b0d74954796 ] Other pins have _a or _x suffix, but this one doesn't have any. Most likely this is a typo. Fixes: dabad1ff8561 ("pinctrl: meson: add pinctrl driver support for Meson-A1 SoC") Signed-off-by: Jan Dakinevich Reviewed-by: Neil Armstrong Message-ID: <20240325113058.248022-1-jan.dakinevich@salutedevices.com> Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin

pinctrl: meson-axg: add missing GPIOA_18 gpio group

2023-06-14T09:13:07+00:00

commit 5b10ff013e8a57f8845615ac2cc37edf7f6eef05 upstream. Without this, the gpio cannot be explicitly mux'ed to its gpio function. Fixes: 83c566806a68a ("pinctrl: meson-axg: Add new pinctrl driver for Meson AXG SoC") Cc: stable@vger.kernel.org Signed-off-by: Martin Hundebøll Reviewed-by: Neil Armstrong Reviewed-by: Dmitry Rokosov Link: https://lore.kernel.org/r/20230512064925.133516-1-martin@geanix.com Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman

pinctrl/meson: enable building as modules

2020-11-05T13:51:38+00:00

Enable pinctrl drivers for 64-bit Amlogic SoCs to be built as modules. The default is still built-in, this only adds the option of building as modules. Signed-off-by: Kevin Hilman Link: https://lore.kernel.org/r/20201026183025.31768-1-khilman@baylibre.com Signed-off-by: Linus Walleij

pinctrl: meson: pinctrl-meson-a1: Remove unused const variable 'i2c_slave_groups'

2020-07-16T13:58:12+00:00

It has never been used. Fixes the following W=1 kernel build warning(s): drivers/pinctrl/meson/pinctrl-meson-a1.c:749:27: warning: ‘i2c_slave_groups’ defined but not used [-Wunused-const-variable=] 749 | static const char const i2c_slave_groups[] = { | ^~~~~~~~~~~~~~~~ Signed-off-by: Lee Jones Cc: Kevin Hilman Cc: Qianggui Song Cc: linux-amlogic@lists.infradead.org Link: https://lore.kernel.org/r/20200713144930.1034632-24-lee.jones@linaro.org Signed-off-by: Linus Walleij

pinctrl: meson: fix drive strength register and bit calculation

2020-07-07T11:15:11+00:00

If a GPIO bank has greater than 16 pins, PAD_DS_REG is split into two or more registers. However, when register and bit were calculated, the first register defined in the bank was used, and the bit was calculated based on the first pin. This causes problems in setting the driving strength. The following method was used to solve this problem: A bit is calculated first using predefined strides. Then, If the bit is 32 or more, the register is changed by the quotient of the bit divided by 32. And the bit is set to the remainder. Signed-off-by: Hyeonki Hong Link: https://lore.kernel.org/r/20200618025916.GA19368@home-desktop Signed-off-by: Linus Walleij

pinctrl: meson: wire up the gpio_chip's set_config callback

2020-04-28T10:00:46+00:00

Use gpiochip_generic_config for the gpio_chip's set_config callback so GPIO flags like GPIO_PULL_UP or GPIO_PULL_DOWN can be used in the board .dts descriptions. This is required for some Meson8m2 boards where GPIO_BSD_EN provides the "MUTE" signal and requires enabling the internal pull-up resistor. Signed-off-by: Martin Blumenstingl Link: https://lore.kernel.org/r/20200417183349.1283092-3-martin.blumenstingl@googlemail.com Signed-off-by: Linus Walleij

pinctrl: meson: implement the gpio_chip get_direction callback

2020-04-28T10:00:46+00:00

Implement the get_direction callback so we read the direction from the actual GPIO controller register. This is recommended by the gpio_chip kernel doc. Signed-off-by: Martin Blumenstingl Link: https://lore.kernel.org/r/20200417183349.1283092-2-martin.blumenstingl@googlemail.com Signed-off-by: Linus Walleij