tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1* Freescale i.MX7 Dual IOMUX Controller
2
3Please refer to fsl,imx-pinctrl.txt in this directory for common binding part
4and usage.
5
6Required properties:
7- compatible: "fsl,imx7d-iomuxc"
8- fsl,pins: each entry consists of 6 integers and represents the mux and config
9 setting for one pin. The first 5 integers <mux_reg conf_reg input_reg mux_val
10 input_val> are specified using a PIN_FUNC_ID macro, which can be found in
11 imx7d-pinfunc.h under device tree source folder. The last integer CONFIG is
12 the pad setting value like pull-up on this pin. Please refer to i.MX7 Dual
13 Reference Manual for detailed CONFIG settings.
14
15CONFIG bits definition:
16PAD_CTL_PUS_100K_DOWN (0 << 5)
17PAD_CTL_PUS_5K_UP (1 << 5)
18PAD_CTL_PUS_47K_UP (2 << 5)
19PAD_CTL_PUS_100K_UP (3 << 5)
20PAD_CTL_PUE (1 << 4)
21PAD_CTL_HYS (1 << 3)
22PAD_CTL_SRE_SLOW (1 << 2)
23PAD_CTL_SRE_FAST (0 << 2)
24PAD_CTL_DSE_X1 (0 << 0)
25PAD_CTL_DSE_X2 (1 << 0)
26PAD_CTL_DSE_X3 (2 << 0)
27PAD_CTL_DSE_X4 (3 << 0)