Other Parts Discussed in Thread: TCAN4550
Tool/software:
Hi
My customer are using TCAN4550 driver from here
https://www.kernel.org/doc/Documentation/devicetree/bindings/net/can/tcan4x5x.txt
The kernel log they saw "Unsupported version number: 0", what does this mean ?
static int m_can_dev_setup(struct m_can_classdev *cdev) { struct net_device *dev = cdev->net; int m_can_version, err;
m_can_version = m_can_check_core_release(cdev);
/* return if unsupported version */
if (!m_can_version) {
dev_err(cdev->dev, "Unsupported version number: %2d",
m_can_version);
return -EINVAL;
}
Below is my customer's device tree
tcan4x5x: tcan4x5x@0 {
compatible = "ti,tcan4x5x";
reg = <0>; /* SPI CS0 */
//spi-max-frequency = <20000000>;
spi-max-frequency = <10000000>;
bosch,mram-cfg = <0x0 0 0 16 0 0 1 1>;
device-state-gpios = <&gpmd 3 GPIOc_ACTIVE_HIGH>;// CAN_PWR_EN on GPIO_MD3
device-wake-gpios = <&gpma 17 GPIO_ACTIVE_HIGH>;// CAN3_WKRQ on GPIO_MA17
reset-gpios = <&gpma 18 GPIO_ACTIVE_LOW>; // CAN3_RST on GPIO_MA18
interrupt-parent = <&gpma>;
interrupts = <19 IRQ_TYPE_LEVEL_LOW>;//GPIO_MA19 CAN3_INT
//kevin add
clocks = <&clk_peri PERI_GPSB0>;
clock-names = "cclk";
and they see below log
[ 0.440891] tcan4x5x spi0.0: M_CAN CREL=0x00000000, rel=0, step=0
[ 0.447003] tcan4x5x spi0.0: Unsupported M_CAN version: expected rel=3.x, got rel=0, step=0
[ 0.455367] tcan4x5x spi0.0: Unsupported version number: 0
Are above log message mean the device is not powered on ?
