69691 - 2017.1/2 Zynq UltraScale+ MPSoC: Linux gpio-controller device-tree property missing in zynqmp.dtsi Description The Linux GPIO device-tree is missing the gpio-controller property in zynqmp.dtsi. Without
类似其他的硬件,pin controller这个HW block需要是device tree中的一个节点。此外,各个其他的HW block在驱动之前也需要先配置其引脚复用功能,因此,这些device(我们称pin controller是host,那么这些使用pin controller进行引脚配置的device叫做client device)也需要在它自己的device tree node中描述pin control的相关内容 1、...
Collaborator avolmat-st commented Dec 5, 2024 Add a new driver for the I2C based MFX STM32L152 gpio controller. Update stm32l4r9i_disco device-tree to describe joystick buttons and additional led available on this board and connected to this GPIO controller. 🎉 1 ...
> Documentation/devicetree/bindings/gpio/gpio.txt > so figure out if what you're adding is generic or not. You may see that adding of 5 bank specific properties mentioned above allow to generalize all 6 banks, any of the banks now can be converted to a separate GPIO controller device wit...
The change adds a replacement to a legacy unmaintainable LPC32xx GPIO controller driver. The driver gets all information to configure a GPIO bank from its device tree node, the driver is capable to assign interrupt controller roles to its GPIO banks and it has no hardcoded dependencies on hard...
在pin controller node中定义pin configuration其目的是为了让client device引用。所谓client device其实就是使用pin control subsystem提供服务的那些设备,例如串口设备。在使用之前,我们一般会在初始化代码中配置相关的引脚功能是串口功能。有了device tree,我们可以通过device tree来传递这样的信息。也就是说,各个device可以...
有了device tree,我们可以通过device tree来传递这样的信息。也就是说,各个device可以通过自己节点的属性来指向pin controller的某个child node,也就是pin configuration了。samsung 24xx系列SOC的pin controller的pin configurations包括两类,一类是定义pin bank,另外一类是定义功能复用配置。
有了device tree,我们可以通过device tree来传递这样的信息。也就是说,各个device可以通过自己节点的属性来指向pin controller的某个child node,也就是pin configuration了。samsung 24xx系列SOC的pin controller的pin configurations包括两类,一类是定义pin bank,另外一类是定义功能复用配置。
driver has compatible interface to device tree clients, so moving to the new driver should not impact any GPIO consumers. The changeset has dependencies on the recent updates to LPC32xx DTS: *http://permalink.gmane.org/gmane.linux.ports.arm.kernel/456304* Recent LPC32xx CCF series (no lin...
- remove root GPIO controller (e.g. make it "simple-bus") and convert GPIO banks to "gpio-controller"s. Can an evolution like this happen? >> +- #size-cells: should be 1, total size of GPIO bank registers. >> + >> +The NXP LPC32xx SoC GPIO controller device node must contain...