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ARM: dts: qcom: Add qti-can device tree node

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Add qti-can device node for sa8155 and documentation.

Change-Id: If919fb31ab58914a3584211ada4faf3729c42d6f
This commit is contained in:
Satya Sudhir Sure
2022-06-14 18:52:40 +05:30
parent abbc68817e
commit fa981ca744
2 changed files with 68 additions and 0 deletions
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51
bindings/net/can/qti-can.txt Normal file
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@@ -0,0 +1,51 @@
* QTI CAN driver *
Required properties:
- compatible: Should be "qcom,renesas,rh850" or "qcom,nxp,mpc5746c".
- reg: Should contain SPI chip select.
- interrupt-parent: Should specify interrupt controller for the interrupt.
- interrupts: Should contain IRQ line for the CAN controller.
- spi-max-frequency: Should contain maximum spi clock frequency for slave device
- qcom,clk-freq-mhz : The frequency at which the CAN clock should be configured.
- qcom,max-can-channels : Maximum number of CAN channels supported by the controller.
Optional properties:
- qcom,reset-gpio: Reference to the GPIO connected to the reset input.
- pinctrl-names : Names corresponding to the numbered pinctrl states.
- pinctrl-0 : This explains the active state of the GPIO line.
- pinctrl-1 : This explains the suspend state of the GPIO line.
- qcom,bits-per-word: Indicate how many bits are in a SPI frame. e.g.: 8, 16, 32.
Default to 16.
- qcom,reset-delay-msec: Delay in milliseconds to be applied after resetting the chip.
This is applicable only if the reset-gpio is specified. Default value is 1 ms.
- qcom,support-can-fd: Whether CAN FD mode is supported or not.
- qcom,can-fw-cmd-timeout-req: Whether a timeout is required if we don't get a response from
the firmware after flash write.
- qcom,can-fw-cmd-timeout-ms: The duration after which timeout will happen if we don't get a
response from the firmware.
- qcom,rem-all-buffering-timeout-ms: The duration after which timeout will happen if we don't get a
response from the firmware while trying to remove all the buffered frames IDs from flash.
Example:
can-controller@0 {
compatible = "qcom,nxp,mpc5746c";
reg = <0>;
spi-max-frequency = <9600000>;
interrupt-parent = <&tlmm_pinmux>;
interrupts = <87 0>;
qcom,reset-gpio = <&tlmm_pinmux 89 0x1>;
qcom,clk-freq-mhz = <20000000>;
qcom,max-can-channels = <2>;
qcom,bits-per-word = <8>;
qcom,reset-delay-msec = <150>;
qcom,can-fw-cmd-timeout-req;
qcom,can-fw-cmd-timeout-ms = <400>;
qcom,rem-all-buffering-timeout-ms = <2000>;
pinctrl-names = "active", "sleep";
pinctrl-0 = <&can_rst_on>;
pinctrl-1 = <&can_rst_off>;
};

17
qcom/sa8155-adp-common.dtsi
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@@ -9,6 +9,23 @@
};
&qupv3_se0_spi {
status = "ok";
#address-cells = <1>;
#size-cells = <0>;
can-controller@0 {
compatible = "qcom,nxp,mpc5746c";
reg = <0>;
interrupt-parent = <&tlmm>;
interrupts = <38 0>;
spi-max-frequency = <5000000>;
qcom,clk-freq-mhz = <40000000>;
qcom,max-can-channels = <1>;
qcom,bits-per-word = <8>;
qcom,support-can-fd;
};
};
&pcie1 {
qcom,boot-option = <0x0>;
};