Hi everyone,
I want to control a mcp23s17 on a i.MX6ul via "/dev/spidev1.0" interface.
I have change my Devicetree like following:
&ecspi2 { fsl,spi-num-chipselects = <4>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_ecspi2 &pinctrl_ecspi2_cs>; cs-gpios = <&gpio1 29 GPIO_ACTIVE_HIGH>; status = "okay"; /* spidev examlpe */ anotherspidev@0 { compatible = "spidev"; spi-max-frequency = <30000000>; reg = <0>; }; };&iomuxc {pinctrl_ecspi2_cs: ecspi2_cs_grp { fsl,pins = < MX6UL_PAD_UART4_RX_DATA__ECSPI2_SS0 0x17059 >; }; pinctrl_ecspi2: ecspi2grp { fsl,pins = < MX6UL_PAD_UART5_TX_DATA__ECSPI2_MOSI 0x1b0b1 MX6UL_PAD_UART5_RX_DATA__ECSPI2_MISO 0x1b0b1 MX6UL_PAD_UART4_TX_DATA__ECSPI2_SCLK 0x1b0b1 >; };}With
dmesg | grep spi I get
[ 1.036501] spi_imx 2008000.ecspi: registered master spi0 [ 1.037659] spi spi0.0: spi_imx_setup: mode 0, 8 bpw, 30000000 hz [ 1.037713] spi spi0.0: setup mode 0, 8 bits/w, 30000000 Hz max --> 0 [ 1.038699] spi_imx 2008000.ecspi: registered child spi0.0 [ 1.039459] spi spi0.1: spi_imx_setup: mode 0, 8 bpw, 30000000 hz [ 1.039505] spi spi0.1: setup mode 0, 8 bits/w, 30000000 Hz max --> 0 [ 1.040399] spi_imx 2008000.ecspi: registered child spi0.1 [ 1.041087] spi spi0.2: spi_imx_setup: mode 0, 8 bpw, 30000000 hz [ 1.041134] spi spi0.2: setup mode 0, 8 bits/w, 30000000 Hz max --> 0 [ 1.042000] spi_imx 2008000.ecspi: registered child spi0.2 [ 1.042701] spi spi0.3: spi_imx_setup: mode 0, 8 bpw, 30000000 hz [ 1.042747] spi spi0.3: setup mode 0, 8 bits/w, 30000000 Hz max --> 0 [ 1.043699] spi_imx 2008000.ecspi: registered child spi0.3 [ 1.043730] spi_imx 2008000.ecspi: probed [ 1.047833] spi_imx 200c000.ecspi: registered master spi1 [ 1.048814] spi spi1.0: spi_imx_setup: mode 0, 8 bpw, 30000000 hz [ 1.048865] spi spi1.0: setup mode 0, 8 bits/w, 30000000 Hz max --> 0 [ 1.049865] spi_imx 200c000.ecspi: registered child spi1.0 [ 1.049896] spi_imx 200c000.ecspi: probed [ 1.053747] spi_imx 2014000.ecspi: registered master spi3 [ 1.054704] spi spi3.0: spi_imx_setup: mode 0, 8 bpw, 20000000 hz [ 1.054751] spi spi3.0: setup mode 0, 8 bits/w, 20000000 Hz max --> 0
I used the code provides in this example to test the mcp23s17 but it doesn't works.
Can you help me please ? Thank you in advance.
Romain
Hi Romain
one can also check kernel configuration option User mode SPI device
driver support (CONFIG_SPI_SPIDEV) as described on
Serial Peripheral Interface (SPI)
Best regards
igor
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