[PATCH v2 2/3] ARM: dts: aspeed: mtmitchell: Update ADC sensors for Mt.Mitchell DVT systems
Chanh Nguyen
chanh at os.amperecomputing.com
Fri May 19 01:51:59 PDT 2023
Change to use I2C ADC controller (ltc2497) for Mt.Mitchell DVT and
later hardware.
Signed-off-by: Chanh Nguyen <chanh at os.amperecomputing.com>
---
Changes in v2:
- None
---
.../boot/dts/aspeed-bmc-ampere-mtmitchell.dts | 107 +++++++++++-------
1 file changed, 66 insertions(+), 41 deletions(-)
diff --git a/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts b/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
index e79f56208b89..d3c7e7c0fd25 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
@@ -65,174 +65,192 @@
adc0mux: adc0mux {
compatible = "io-channel-mux";
- io-channels = <&adc0 0>;
+ io-channels = <&adc_i2c_0 0>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc1mux: adc1mux {
compatible = "io-channel-mux";
- io-channels = <&adc0 1>;
+ io-channels = <&adc_i2c_0 1>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc2mux: adc2mux {
compatible = "io-channel-mux";
- io-channels = <&adc0 2>;
+ io-channels = <&adc_i2c_0 2>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc3mux: adc3mux {
compatible = "io-channel-mux";
- io-channels = <&adc0 3>;
+ io-channels = <&adc_i2c_0 3>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc4mux: adc4mux {
compatible = "io-channel-mux";
- io-channels = <&adc0 4>;
+ io-channels = <&adc_i2c_0 4>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc5mux: adc5mux {
compatible = "io-channel-mux";
- io-channels = <&adc0 5>;
+ io-channels = <&adc_i2c_0 5>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc6mux: adc6mux {
compatible = "io-channel-mux";
- io-channels = <&adc0 6>;
+ io-channels = <&adc_i2c_0 6>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc7mux: adc7mux {
compatible = "io-channel-mux";
- io-channels = <&adc0 7>;
+ io-channels = <&adc_i2c_0 7>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc8mux: adc8mux {
compatible = "io-channel-mux";
- io-channels = <&adc1 0>;
+ io-channels = <&adc_i2c_0 8>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc9mux: adc9mux {
compatible = "io-channel-mux";
- io-channels = <&adc1 1>;
+ io-channels = <&adc_i2c_0 9>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc10mux: adc10mux {
compatible = "io-channel-mux";
- io-channels = <&adc1 2>;
+ io-channels = <&adc_i2c_0 10>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc11mux: adc11mux {
compatible = "io-channel-mux";
- io-channels = <&adc1 3>;
+ io-channels = <&adc_i2c_0 11>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc12mux: adc12mux {
compatible = "io-channel-mux";
- io-channels = <&adc1 4>;
+ io-channels = <&adc_i2c_0 12>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc13mux: adc13mux {
compatible = "io-channel-mux";
- io-channels = <&adc1 5>;
+ io-channels = <&adc_i2c_0 13>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc14mux: adc14mux {
compatible = "io-channel-mux";
- io-channels = <&adc1 6>;
+ io-channels = <&adc_i2c_0 14>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
adc15mux: adc15mux {
compatible = "io-channel-mux";
- io-channels = <&adc1 7>;
+ io-channels = <&adc_i2c_0 15>;
#io-channel-cells = <1>;
io-channel-names = "parent";
mux-controls = <&gpioI5mux>;
+ settle-time-us = <10000>;
channels = "s0", "s1";
};
iio-hwmon {
compatible = "iio-hwmon";
- io-channels = <&adc0mux 0>, <&adc0mux 1>,
- <&adc1mux 0>, <&adc1mux 1>,
- <&adc2mux 0>, <&adc2mux 1>,
- <&adc3mux 0>, <&adc3mux 1>,
- <&adc4mux 0>, <&adc4mux 1>,
- <&adc5mux 0>, <&adc5mux 1>,
- <&adc6mux 0>, <&adc6mux 1>,
- <&adc7mux 0>, <&adc7mux 1>,
- <&adc8mux 0>, <&adc8mux 1>,
- <&adc9mux 0>, <&adc9mux 1>,
- <&adc10mux 0>, <&adc10mux 1>,
- <&adc11mux 0>, <&adc11mux 1>,
- <&adc12mux 0>, <&adc12mux 1>,
- <&adc13mux 0>, <&adc13mux 1>,
- <&adc14mux 0>, <&adc14mux 1>,
- <&adc15mux 0>, <&adc15mux 1>,
- <&adc_i2c 0>, <&adc_i2c 1>,
- <&adc_i2c 2>, <&adc_i2c 3>,
- <&adc_i2c 4>, <&adc_i2c 5>,
- <&adc_i2c 6>, <&adc_i2c 7>,
- <&adc_i2c 8>, <&adc_i2c 9>,
- <&adc_i2c 10>, <&adc_i2c 11>,
- <&adc_i2c 12>, <&adc_i2c 13>,
- <&adc_i2c 14>, <&adc_i2c 15>;
+ io-channels = <&adc0mux 0>, <&adc0mux 1>,
+ <&adc1mux 0>, <&adc1mux 1>,
+ <&adc2mux 0>, <&adc2mux 1>,
+ <&adc3mux 0>, <&adc3mux 1>,
+ <&adc4mux 0>, <&adc4mux 1>,
+ <&adc5mux 0>, <&adc5mux 1>,
+ <&adc6mux 0>, <&adc6mux 1>,
+ <&adc7mux 0>, <&adc7mux 1>,
+ <&adc8mux 0>, <&adc8mux 1>,
+ <&adc9mux 0>, <&adc9mux 1>,
+ <&adc10mux 0>, <&adc10mux 1>,
+ <&adc11mux 0>, <&adc11mux 1>,
+ <&adc12mux 0>, <&adc12mux 1>,
+ <&adc13mux 0>, <&adc13mux 1>,
+ <&adc14mux 0>, <&adc14mux 1>,
+ <&adc15mux 0>, <&adc15mux 1>,
+ <&adc_i2c_1 0>, <&adc_i2c_1 1>,
+ <&adc_i2c_1 2>, <&adc_i2c_1 3>,
+ <&adc_i2c_1 4>, <&adc_i2c_1 5>,
+ <&adc_i2c_1 6>, <&adc_i2c_1 7>,
+ <&adc_i2c_1 8>, <&adc_i2c_1 9>,
+ <&adc_i2c_1 10>, <&adc_i2c_1 11>,
+ <&adc_i2c_1 12>, <&adc_i2c_1 13>,
+ <&adc_i2c_1 14>, <&adc_i2c_1 15>,
+ <&adc0 0>, <&adc0 1>,
+ <&adc0 2>;
};
};
@@ -353,7 +371,14 @@
&i2c4 {
status = "okay";
- adc_i2c: adc at 16 {
+ adc_i2c_0: adc at 14 {
+ compatible = "lltc,ltc2497";
+ reg = <0x14>;
+ vref-supply = <&voltage_mon_reg>;
+ #io-channel-cells = <1>;
+ };
+
+ adc_i2c_1: adc at 16 {
compatible = "lltc,ltc2497";
reg = <0x16>;
vref-supply = <&voltage_mon_reg>;
--
2.17.1
More information about the linux-arm-kernel
mailing list