diff options
| author | Andrey Smirnov <[email protected]> | 2017-05-15 07:53:03 -0700 |
|---|---|---|
| committer | Shawn Guo <[email protected]> | 2017-05-21 09:53:36 +0800 |
| commit | 184f39b57cab6fd00b045689d300070ca0ceac78 (patch) | |
| tree | 691e4808fefac1eaab8930e896abaa70adb11a5a | |
| parent | 9760c06bc20f82529aec4874b199a8e3437442a2 (diff) | |
ARM: dts: imx7d-sdb: Add GPIO expander node
Add node for U38, a 74LV595PW serial-in shift register that acts as a
GPIO expander on the board.
Cc: [email protected]
Cc: Dong Aisheng <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Russell King <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Andrey Smirnov <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
| -rw-r--r-- | arch/arm/boot/dts/imx7d-sdb.dts | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx7d-sdb.dts b/arch/arm/boot/dts/imx7d-sdb.dts index 5be01a1bf840..d6f2dda90710 100644 --- a/arch/arm/boot/dts/imx7d-sdb.dts +++ b/arch/arm/boot/dts/imx7d-sdb.dts @@ -52,6 +52,27 @@ reg = <0x80000000 0x80000000>; }; + spi4 { + compatible = "spi-gpio"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_spi4>; + gpio-sck = <&gpio1 13 GPIO_ACTIVE_HIGH>; + gpio-mosi = <&gpio1 9 GPIO_ACTIVE_HIGH>; + cs-gpios = <&gpio1 12 GPIO_ACTIVE_HIGH>; + num-chipselects = <1>; + #address-cells = <1>; + #size-cells = <0>; + + extended_io: gpio-expander@0 { + compatible = "fairchild,74hc595"; + gpio-controller; + #gpio-cells = <2>; + reg = <0>; + registers-number = <1>; + spi-max-frequency = <100000>; + }; + }; + regulators { compatible = "simple-bus"; #address-cells = <1>; @@ -642,5 +663,13 @@ fsl,pins = < MX7D_PAD_LPSR_GPIO1_IO01__PWM1_OUT 0x110b0 >; + + pinctrl_spi4: spi4grp { + fsl,pins = < + MX7D_PAD_GPIO1_IO09__GPIO1_IO9 0x59 + MX7D_PAD_GPIO1_IO12__GPIO1_IO12 0x59 + MX7D_PAD_GPIO1_IO13__GPIO1_IO13 0x59 + >; + }; }; }; |