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Commit 56370654 authored by Miaoqing Pan's avatar Miaoqing Pan
Browse files

spi: qup: add device bindings for spi-msm-slave 



Use spidev driver for spi-msm-slave.

CRs-Fixed: 2251010
Change-Id: I4648c2d037eb8fd4fefcbdf3809b01320925b113
Signed-off-by: default avatarMiaoqing Pan <miaoqing@codeaurora.org>
parent e83ca98f

Documentation/devicetree/bindings/spi/qcom,spi-qup.txt

+18 −1
Original line number Diff line number Diff line
@@ -40,7 +40,24 @@ Optional properties: 
                receive.



SPI slave nodes must be children of the SPI master node and can contain

properties described in Documentation/devicetree/bindings/spi/spi-bus.txt

the following properties.



Required properties:

- compatible:     Should contain:

                  "qcom,spi-msm-slave" for external slave control



- reg:            Chip select address of device.



- spi-max-frequency: Maximum SPI clocking speed of device in Hz.



Optional properties:

- spi-cpol:       Empty property indicating device requires

                  inverse clock polarity (CPOL) mode.

- spi-cpha:       Empty property indicating device requires

                  shifted clock phase (CPHA) mode.



Other optional properties described in

Documentation/devicetree/bindings/spi/spi-bus.txt



Example:

drivers/spi/spidev.c

+1 −0
Original line number Diff line number Diff line
@@ -696,6 +696,7 @@ static struct class *spidev_class; 
static const struct of_device_id spidev_dt_ids[] = {

	{ .compatible = "rohm,dh2228fv" },

	{ .compatible = "lineartechnology,ltc2488" },

	{ .compatible = "qcom,spi-msm-slave" },

	{},

};

MODULE_DEVICE_TABLE(of, spidev_dt_ids);