clearfog: do not support I2C address translation via LTC4316
It was a nice idea, but the power supplies we're using insist on using
that extra checksum byte (PEC) which also includes the I2C address.
There's nothing in the kernel today which can rewrite the PEC for a new
checksum, and while that would not be terribly hard to do, it just is
not there yet. Also, the rev2 of these boards does not have LTC4316 at
all, and we haven't been using that chip for the past year or so (it's
always been muxed to that bit-banging sofwtare I2C).
Change-Id: I8073f30501050b4a148fead87e0b1ece24130a04
diff --git a/board/czechlight/clearfog/sdn-roadm-clearfog.dtsi b/board/czechlight/clearfog/sdn-roadm-clearfog.dtsi
index 04d5b38..3d07cac 100644
--- a/board/czechlight/clearfog/sdn-roadm-clearfog.dtsi
+++ b/board/czechlight/clearfog/sdn-roadm-clearfog.dtsi
@@ -4,8 +4,6 @@
status = "okay";
};
-#define CLEARFOG_PMBUS_BITBANG
-
/ {
clocks {
spi_uart_clk: osc_max14830 {
@@ -24,7 +22,6 @@
};
};
-#ifdef CLEARFOG_PMBUS_BITBANG
gpio_i2c {
compatible = "i2c-gpio";
sda-gpios = <&gpio0 25 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
@@ -33,10 +30,8 @@
#address-cells = <1>;
#size-cells = <0>;
};
-#endif
};
-#ifdef CLEARFOG_PMBUS_BITBANG
&uart1_pins {
status = "disabled";
};
@@ -44,7 +39,6 @@
&uart1 {
status = "disabled";
};
-#endif
&gpio1 {
spi_int {
@@ -92,18 +86,13 @@
i2c_bitbang_enable {
gpio-hog;
gpios = <7 GPIO_ACTIVE_HIGH>;
-#ifdef CLEARFOG_PMBUS_BITBANG
output-high;
-#else
- output-low;
-#endif
line-name = "I2C bitbang bus";
};
i2c_xor_high {
gpio-hog;
gpios = <6 GPIO_ACTIVE_HIGH>;
- //output-low; // XOR byte 0b0001111
output-high; // XOR byte 0b1001111
line-name = "I2C XOR high";
};
@@ -111,11 +100,7 @@
i2c_xor_enable {
gpio-hog;
gpios = <5 GPIO_ACTIVE_HIGH>;
-#ifdef CLEARFOG_PMBUS_BITBANG
output-low;
-#else
- output-high;
-#endif
line-name = "I2C addr xlate";
};
};