diff options
| author | Sean Anderson <seanga2@gmail.com> | 2020-09-14 18:01:57 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-10-08 18:42:36 +0300 |
| commit | 7f0f1806e3a474dc15b6bad806b4afa967447774 (patch) | |
| tree | 67ae12ff6c548fe4c3f13177a8a4ef9b3ea781b8 /arch | |
| parent | 5eee93e5b1ae9b2b31db99f774e0f635ad276068 (diff) | |
| download | u-boot-7f0f1806e3a474dc15b6bad806b4afa967447774.tar.xz | |
test: pinmux: Add test for pin muxing
This extends the pinctrl-sandbox driver to support pin muxing, and adds a
test for that behaviour. The test is done in C and not python (like the
existing tests for the pinctrl uclass) because it needs to call
pinctrl_select_state. Another option could be to add a command that
invokes pinctrl_select_state and then test everything in
test/py/tests/test_pinmux.py.
The pinctrl-sandbox driver now mimics the way that many pinmux devices
work. There are two groups of pins which are muxed together, as well as
four pins which are muxed individually. I have tried to test all normal
paths. However, very few error cases are explicitly checked for.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sandbox/dts/test.dts | 45 |
1 files changed, 38 insertions, 7 deletions
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index cc372806a0..6ea1073c47 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -2,6 +2,7 @@ #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/gpio/sandbox-gpio.h> +#include <dt-bindings/pinctrl/sandbox-pinmux.h> / { model = "sandbox"; @@ -1094,30 +1095,60 @@ pinctrl { compatible = "sandbox,pinctrl"; - pinctrl-names = "default"; - pinctrl-0 = <&gpios>; + pinctrl-names = "default", "alternate"; + pinctrl-0 = <&pinctrl_gpios>, <&pinctrl_i2s>; + pinctrl-1 = <&pinctrl_spi>, <&pinctrl_i2c>; - gpios: gpios { + pinctrl_gpios: gpios { gpio0 { - pins = "GPIO0"; + pins = "P5"; + function = "GPIO"; bias-pull-up; input-disable; }; gpio1 { - pins = "GPIO1"; + pins = "P6"; + function = "GPIO"; output-high; drive-open-drain; }; gpio2 { - pins = "GPIO2"; + pinmux = <SANDBOX_PINMUX(7, SANDBOX_PINMUX_GPIO)>; bias-pull-down; input-enable; }; gpio3 { - pins = "GPIO3"; + pinmux = <SANDBOX_PINMUX(8, SANDBOX_PINMUX_GPIO)>; bias-disable; }; }; + + pinctrl_i2c: i2c { + groups { + groups = "I2C_UART"; + function = "I2C"; + }; + + pins { + pins = "P0", "P1"; + drive-open-drain; + }; + }; + + pinctrl_i2s: i2s { + groups = "SPI_I2S"; + function = "I2S"; + }; + + pinctrl_spi: spi { + groups = "SPI_I2S"; + function = "SPI"; + + cs { + pinmux = <SANDBOX_PINMUX(5, SANDBOX_PINMUX_CS)>, + <SANDBOX_PINMUX(6, SANDBOX_PINMUX_CS)>; + }; + }; }; hwspinlock@0 { |