arm64: dts: qcom: Remove duplicate sc7180-trogdor include on lazor/homestar

The sc7180-trogdor-{lazor,homestar}-*.dtsi files all include
sc7180-trogdor.dtsi and sc7180-trogdor-lazor.dtsi or
sc7180-trogdor-homestar.dtsi, so including it here in the
sc7180-trogdor-{lazor,homestar}.dtsi file means we have a duplicate
include after commit 19794489fa24 ("arm64: dts: qcom: Only include
sc7180.dtsi in sc7180-trogdor.dtsi"). We include the sc7180-trogdor.dtsi
file in a board like sc7180-trogdor-lazor-r1.dts so that we can include
the display bridge snippet (e.g. sc7180-trogdor-ti-sn65dsi86.dtsi)
instead of making ever increasing variants like
sc7180-trogdor-lazor-ti-sn65dsi86.dtsi.

Unfortunately, having the double include like this means the display
bridge's i2c bus is left disabled instead of enabled by the bridge
snippet. Any boards that use the i2c bus for the display bridge will
have the bus disabled when we include sc7180-trogdor.dtsi the second
time, which picks up the i2c status="disabled" line from sc7180.dtsi.
This leads to the display not turning on and black screens at boot on
lazor and homestar devices.

Fix this by dropping the include and making a note that the
sc7180-trogdor-{lazor,homestar}.dtsi file must be included after
sc7180-trogdor.dtsi

Reported-by: Douglas Anderson <dianders@chromium.org>
Cc: "Joseph S. Barrera III" <joebar@chromium.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Fixes: 19794489fa24 ("arm64: dts: qcom: Only include sc7180.dtsi in sc7180-trogdor.dtsi")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220602190621.1646679-1-swboyd@chromium.org

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
index 9b3e3d13c1658d80a517df6773cd7b223496a2a7..d1e2df5164eaab4befb4e741d21b02908f1e9df7 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
@@ -5,7 +5,7 @@
  * Copyright 2021 Google LLC.
  */
 
-#include "sc7180-trogdor.dtsi"
+/* This file must be included after sc7180-trogdor.dtsi */
 
 / {
        /* BOARD-SPECIFIC TOP LEVEL NODES */

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi
index fe2369c29aad2eed665843875575e58c416ae608..88f6a7d4d0203a708fe9a8d0f49eb85139b135cb 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi
@@ -5,7 +5,7 @@
  * Copyright 2020 Google LLC.
  */
 
-#include "sc7180-trogdor.dtsi"
+/* This file must be included after sc7180-trogdor.dtsi */
 
 &ap_sar_sensor {
        semtech,cs0-ground;