arm64: dts: qcom: sa8540p-ride: Document i2c busses

It isn't obvious in the current devicetree what is connected. Go ahead
and document what's on the other end.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
Reviewed-by: Eric Chanudet <echanude@redhat.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230130154823.117542-2-ahalaney@redhat.com

diff --git a/arch/arm64/boot/dts/qcom/sa8540p-ride.dts b/arch/arm64/boot/dts/qcom/sa8540p-ride.dts
index cb9fbde..3ccb5ff 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sa8540p-ride.dts
+++ b/arch/arm64/boot/dts/qcom/sa8540p-ride.dts
@@ -317,6 +317,7 @@
 
 &tlmm {
        i2c0_default: i2c0-default-state {
+               /* To USB7002T-I/KDXVA0 USB hub (SIP1 only) */
                pins = "gpio135", "gpio136";
                function = "qup0";
                drive-strength = <2>;
@@ -324,6 +325,7 @@
        };
 
        i2c1_default: i2c1-default-state {
+               /* To PM40028B-F3EI PCIe switch */
                pins = "gpio158", "gpio159";
                function = "qup1";
                drive-strength = <2>;
@@ -331,6 +333,7 @@
        };
 
        i2c12_default: i2c12-default-state {
+               /* To Maxim max20411 */
                pins = "gpio0", "gpio1";
                function = "qup12";
                drive-strength = <2>;
@@ -338,6 +341,7 @@
        };
 
        i2c15_default: i2c15-default-state {
+               /* To display connector (SIP1 only) */
                pins = "gpio36", "gpio37";
                function = "qup15";
                drive-strength = <2>;
@@ -345,6 +349,7 @@
        };
 
        i2c18_default: i2c18-default-state {
+               /* To ASM330LHH IMU (SIP1 only) */
                pins = "gpio66", "gpio67";
                function = "qup18";
                drive-strength = <2>;