[PATCH] ARM: dts: bcm283x: Move the BCM2837 DT contents from arm64 to arm.

Scott Branden

2017-07-20 00:01:33 UTC

Hi Eric,

suggestion inline

Post by Eric Anholt
BCM2837 is somewhat unusual in that we build its DT on both arm32 and
arm64. Most devices are being run in arm32 mode.
Having the body of the DT for 2837 separate from 2835/6 has been a
source of pain, as we often need to make changes that span both
directories simultaneously (for example, the thermal changes for 4.13,
and pinmuxing changes earlier). Other changes are made more
complicated than they need to be, such as the SDHOST enabling, because
we end up splitting a single change into a 283[56] half and a 2837
half.
---
I had asked about what we could do about our DT merging troubles back
in https://lkml.org/lkml/2017/5/16/707 with no response. I'm hoping
we can take this patch as a resolution to that, and submit (almost
all) future RPi DT changes through the arm32 dt tree.
arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 42 +++++++++++++++++++++-
.../dts/broadcom => arm/boot/dts}/bcm2837.dtsi | 0
arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts | 42 +---------------------
3 files changed, 42 insertions(+), 42 deletions(-)
rename arch/{arm64/boot/dts/broadcom => arm/boot/dts}/bcm2837.dtsi (100%)
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
index c72a27d908b6..972f14db28ac 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
@@ -1 +1,41 @@
-#include "arm64/broadcom/bcm2837-rpi-3-b.dts"
+/dts-v1/;
+#include "bcm2837.dtsi"
+#include "bcm2835-rpi.dtsi"
+#include "bcm283x-rpi-smsc9514.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"

If you're moving this back to the arm directory why not change the
include path and remove the 4 symlinks in arm64/boot/dts/broadcom?

+#include "arm/bcm2837.dtsi"
+#include "arm/bcm2835-rpi.dtsi"
+#include "arm/bcm283x-rpi-smsc9514.dtsi"
+#include "arm/bcm283x-rpi-usb-host.dtsi"

Post by Eric Anholt
+
+/ {
+ compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
+ model = "Raspberry Pi 3 Model B";
+
+ memory {
+ reg = <0 0x40000000>;
+ };
+
+ leds {
+ act {
+ gpios = <&gpio 47 0>;
+ };
+ };
+};
+
+&uart1 {
+ status = "okay";
+};
+
+/* SDHCI is used to control the SDIO for wireless */
+&sdhci {
+ pinctrl-names = "default";
+ pinctrl-0 = <&emmc_gpio34>;
+ status = "okay";
+ bus-width = <4>;
+ non-removable;
+};
+
+/* SDHOST is used to drive the SD card */
+&sdhost {
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdhost_gpio48>;
+ status = "okay";
+ bus-width = <4>;
+};
diff --git a/arch/arm64/boot/dts/broadcom/bcm2837.dtsi b/arch/arm/boot/dts/bcm2837.dtsi
similarity index 100%
rename from arch/arm64/boot/dts/broadcom/bcm2837.dtsi
rename to arch/arm/boot/dts/bcm2837.dtsi
diff --git a/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts b/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts
index 972f14db28ac..699d340a3437 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts
+++ b/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts
@@ -1,41 +1 @@
-/dts-v1/;
-#include "bcm2837.dtsi"
-#include "bcm2835-rpi.dtsi"
-#include "bcm283x-rpi-smsc9514.dtsi"
-#include "bcm283x-rpi-usb-host.dtsi"
-
-/ {
- compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
- model = "Raspberry Pi 3 Model B";
-
- memory {
- reg = <0 0x40000000>;
- };
-
- leds {
- act {
- gpios = <&gpio 47 0>;
- };
- };
-};
-
-&uart1 {
- status = "okay";
-};
-
-/* SDHCI is used to control the SDIO for wireless */
-&sdhci {
- pinctrl-names = "default";
- pinctrl-0 = <&emmc_gpio34>;
- status = "okay";
- bus-width = <4>;
- non-removable;
-};
-
-/* SDHOST is used to drive the SD card */
-&sdhost {
- pinctrl-names = "default";
- pinctrl-0 = <&sdhost_gpio48>;
- status = "okay";
- bus-width = <4>;
-};
+#include "arm/bcm2837-rpi-3-b.dts"