On Tue, Aug 18, 2020 at 7:05 PM Laurent Pinchart laurent.pinchart@ideasonboard.com wrote:
Hi Vaishnav,
Thank you for the patch.
On Tue, Aug 18, 2020 at 06:18:15PM +0530, Vaishnav M A wrote:
This patch adds device tree bindings for the mikroBUS port, device tree overlays for the mikrobus Port on the BeagleBoard.org PocketBeagle is available here : github.com/beagleboard/bb.org-overlays/blob/master/src/arm/PB-MIKROBUS-0.dts
Signed-off-by: Vaishnav M A vaishnav@beagleboard.org
.../bindings/misc/linux,mikrobus.txt | 81 +++++++++++++++++++
Would you mind converting this binding document to YAML ? For new bindings we're trying to enforce usage of YAML, to avoid increasing the conversion backlog.
Hi Laurent,
Sure, I will convert the device tree binding document to YAML in the next version.
1 file changed, 81 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/linux,mikrobus.txt
diff --git a/Documentation/devicetree/bindings/misc/linux,mikrobus.txt b/Documentation/devicetree/bindings/misc/linux,mikrobus.txt new file mode 100644 index 000000000000..99f75caf5f35 --- /dev/null +++ b/Documentation/devicetree/bindings/misc/linux,mikrobus.txt @@ -0,0 +1,81 @@ +mikroBUS add-on board socket
+Required properties: +- compatible: Must be "linux,mikrobus" +- i2c-adapter: phandle to the i2c adapter attached to the mikrobus socket. +- spi-master: spi bus number of the spi-master attached to the mikrobus socket. +- spi-cs: spi chip-select numbers corresponding to the chip-selects
on the mikrobus socket(0 -> chip select corresponding to CS pin
1 -> chip select corresponding to RST pin).
+- serdev-controller: phandle to the uart port attached to the mikrobus socket. +- pwms: phandle to the pwm-controller corresponding to the mikroBUS PWM pin. +- mikrobus-gpios: gpios array corresponding to GPIOs on the mikroBUS port,
for targets not supporting the AN pin on the mikroBUS port as
GPIO, the length of the gpios array can be 11, otherwise it
should be 12.
+- pinctrl-names: pinctrl state names to support additional pin usage/deviations
from mikroBUS socket standard usage, must be "default",
"pwm_default", "pwm_gpio", "uart_default", "uart_gpio",
"i2c_default", "i2c_gpio", "spi_default", "spi_gpio", these
pinctrl names should have corresponding pinctrl-N entries which
corresponds to the pinmux state for the pingroup, for example,
i2c_default corresponds to the state where the I2C pin group
(SCL,SDA) are configured in I2C mode and i2c_gpio mode corresponds
to the pinmux state where these pins are configured as GPIO.
+- pinctrl-N : pinctrl-(0-8) corresponds to the pinctrl states for the states described
above.
+Example:
mikrobus-0 {
compatible = "linux,mikrobus";
status = "okay";
pinctrl-names = "default", "pwm_default", "pwm_gpio",
"uart_default", "uart_gpio", "i2c_default",
"i2c_gpio", "spi_default", "spi_gpio";
pinctrl-0 = <
&P2_03_gpio_input_pin
&P1_04_gpio_pin
&P1_02_gpio_pin
>;
pinctrl-1 = <&P2_01_pwm_pin>;
pinctrl-2 = <&P2_01_gpio_pin>;
pinctrl-3 = <
&P2_05_uart_pin
&P2_07_uart_pin
>;
pinctrl-4 = <
&P2_05_gpio_pin
&P2_07_gpio_pin
>;
pinctrl-5 = <
&P2_09_i2c_pin
&P2_11_i2c_pin
>;
pinctrl-6 = <
&P2_09_gpio_pin
&P2_11_gpio_pin
>;
pinctrl-7 = <
&P1_12_spi_pin
&P1_10_spi_pin
&P1_08_spi_sclk_pin
&P1_06_spi_cs_pin
>;
pinctrl-8 = <
&P1_12_gpio_pin
&P1_10_gpio_pin
&P1_08_gpio_pin
&P1_06_gpio_pin
>;
i2c-adapter = <&i2c1>;
spi-master = <0>;
spi-cs = <0 1>;
serdev-controller = <&uart4>;
pwms = <&ehrpwm1 0 500000 0>;
mikrobus-gpios = <&gpio1 18 0> , <&gpio0 23 0>,
<&gpio0 30 0> , <&gpio0 31 0>,
<&gpio0 15 0> , <&gpio0 14 0>,
<&gpio0 4 0> , <&gpio0 3 0>,
<&gpio0 2 0> , <&gpio0 5 0>,
<&gpio2 25 0> , <&gpio2 3 0>;
};
\ No newline at end of file
-- Regards,
Laurent Pinchart
Thanks and Regards,
Vaishnav