From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>,
soc@kernel.org, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org
Subject: [PATCH 2/2] arm: dts: Enable device-tree overlay support for RPi devices
Date: Tue, 30 May 2023 19:56:24 +0200 [thread overview]
Message-ID: <20230530175624.2360218-3-u.kleine-koenig@pengutronix.de> (raw)
In-Reply-To: <20230530175624.2360218-1-u.kleine-koenig@pengutronix.de>
From: Aurelien Jarno <aurelien@aurel32.net>
Add the '-@' DTC option for the Raspberry Pi devices. This option
populates the '__symbols__' node that contains all the necessary symbols
for supporting device-tree overlays (for instance from the firmware or
the bootloader) on these devices.
The Rasbperry Pi devices are well known for their GPIO header, that
allow various "HATs" or other modules do be connected and this enables
users to create out-of-tree device-tree overlays for these modules.
Please note that this change does increase the size of the resulting DTB
by ~40%. For example, with v6.4-rc1 increase in size is as follows:
bcm2711-rpi-400.dtb 27556 -> 38141 bytes
bcm2711-rpi-4-b.dtb 27484 -> 38069 bytes
bcm2711-rpi-cm4-io.dtb 27373 -> 38076 bytes
bcm2835-rpi-a.dtb 12879 -> 18235 bytes
bcm2835-rpi-a-plus.dtb 13015 -> 18371 bytes
bcm2835-rpi-b.dtb 12997 -> 18377 bytes
bcm2835-rpi-b-plus.dtb 13237 -> 18666 bytes
bcm2835-rpi-b-rev2.dtb 13085 -> 18514 bytes
bcm2835-rpi-cm1-io1.dtb 13109 -> 18528 bytes
bcm2835-rpi-zero.dtb 12923 -> 18311 bytes
bcm2835-rpi-zero-w.dtb 13449 -> 18889 bytes
bcm2836-rpi-2-b.dtb 14500 -> 20252 bytes
bcm2837-rpi-3-a-plus.dtb 14930 -> 20713 bytes
bcm2837-rpi-3-b.dtb 15107 -> 20979 bytes
bcm2837-rpi-3-b-plus.dtb 15463 -> 21443 bytes
bcm2837-rpi-cm3-io3.dtb 14429 -> 20098 bytes
bcm2837-rpi-zero-2-w.dtb 14781 -> 20524 bytes
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Link: https://lore.kernel.org/r/20220410225940.135744-3-aurelien@aurel32.net
[ukleinek: rebased to v6.4-rc1]
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
arch/arm/boot/dts/Makefile | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 59829fc90315..68e89f9289ef 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -85,6 +85,24 @@ dtb-$(CONFIG_SOC_SP7021) += \
sunplus-sp7021-demo-v3.dtb
dtb-$(CONFIG_ARCH_AXXIA) += \
axm5516-amarillo.dtb
+# Enables support for device-tree overlays
+DTC_FLAGS_bcm2835-rpi-b := -@
+DTC_FLAGS_bcm2835-rpi-a := -@
+DTC_FLAGS_bcm2835-rpi-b-rev2 := -@
+DTC_FLAGS_bcm2835-rpi-b-plus := -@
+DTC_FLAGS_bcm2835-rpi-a-plus := -@
+DTC_FLAGS_bcm2835-rpi-cm1-io1 := -@
+DTC_FLAGS_bcm2836-rpi-2-b := -@
+DTC_FLAGS_bcm2837-rpi-3-a-plus := -@
+DTC_FLAGS_bcm2837-rpi-3-b := -@
+DTC_FLAGS_bcm2837-rpi-3-b-plus := -@
+DTC_FLAGS_bcm2837-rpi-cm3-io3 := -@
+DTC_FLAGS_bcm2837-rpi-zero-2-w := -@
+DTC_FLAGS_bcm2711-rpi-400 := -@
+DTC_FLAGS_bcm2711-rpi-4-b := -@
+DTC_FLAGS_bcm2711-rpi-cm4-io := -@
+DTC_FLAGS_bcm2835-rpi-zero := -@
+DTC_FLAGS_bcm2835-rpi-zero-w := -@
dtb-$(CONFIG_ARCH_BCM2835) += \
bcm2835-rpi-b.dtb \
bcm2835-rpi-a.dtb \
--
2.39.2
WARNING: multiple messages have this Message-ID (diff)
From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>,
soc@kernel.org, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org
Subject: [PATCH 2/2] arm: dts: Enable device-tree overlay support for RPi devices
Date: Tue, 30 May 2023 19:56:24 +0200 [thread overview]
Message-ID: <20230530175624.2360218-3-u.kleine-koenig@pengutronix.de> (raw)
In-Reply-To: <20230530175624.2360218-1-u.kleine-koenig@pengutronix.de>
From: Aurelien Jarno <aurelien@aurel32.net>
Add the '-@' DTC option for the Raspberry Pi devices. This option
populates the '__symbols__' node that contains all the necessary symbols
for supporting device-tree overlays (for instance from the firmware or
the bootloader) on these devices.
The Rasbperry Pi devices are well known for their GPIO header, that
allow various "HATs" or other modules do be connected and this enables
users to create out-of-tree device-tree overlays for these modules.
Please note that this change does increase the size of the resulting DTB
by ~40%. For example, with v6.4-rc1 increase in size is as follows:
bcm2711-rpi-400.dtb 27556 -> 38141 bytes
bcm2711-rpi-4-b.dtb 27484 -> 38069 bytes
bcm2711-rpi-cm4-io.dtb 27373 -> 38076 bytes
bcm2835-rpi-a.dtb 12879 -> 18235 bytes
bcm2835-rpi-a-plus.dtb 13015 -> 18371 bytes
bcm2835-rpi-b.dtb 12997 -> 18377 bytes
bcm2835-rpi-b-plus.dtb 13237 -> 18666 bytes
bcm2835-rpi-b-rev2.dtb 13085 -> 18514 bytes
bcm2835-rpi-cm1-io1.dtb 13109 -> 18528 bytes
bcm2835-rpi-zero.dtb 12923 -> 18311 bytes
bcm2835-rpi-zero-w.dtb 13449 -> 18889 bytes
bcm2836-rpi-2-b.dtb 14500 -> 20252 bytes
bcm2837-rpi-3-a-plus.dtb 14930 -> 20713 bytes
bcm2837-rpi-3-b.dtb 15107 -> 20979 bytes
bcm2837-rpi-3-b-plus.dtb 15463 -> 21443 bytes
bcm2837-rpi-cm3-io3.dtb 14429 -> 20098 bytes
bcm2837-rpi-zero-2-w.dtb 14781 -> 20524 bytes
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Link: https://lore.kernel.org/r/20220410225940.135744-3-aurelien@aurel32.net
[ukleinek: rebased to v6.4-rc1]
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
arch/arm/boot/dts/Makefile | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 59829fc90315..68e89f9289ef 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -85,6 +85,24 @@ dtb-$(CONFIG_SOC_SP7021) += \
sunplus-sp7021-demo-v3.dtb
dtb-$(CONFIG_ARCH_AXXIA) += \
axm5516-amarillo.dtb
+# Enables support for device-tree overlays
+DTC_FLAGS_bcm2835-rpi-b := -@
+DTC_FLAGS_bcm2835-rpi-a := -@
+DTC_FLAGS_bcm2835-rpi-b-rev2 := -@
+DTC_FLAGS_bcm2835-rpi-b-plus := -@
+DTC_FLAGS_bcm2835-rpi-a-plus := -@
+DTC_FLAGS_bcm2835-rpi-cm1-io1 := -@
+DTC_FLAGS_bcm2836-rpi-2-b := -@
+DTC_FLAGS_bcm2837-rpi-3-a-plus := -@
+DTC_FLAGS_bcm2837-rpi-3-b := -@
+DTC_FLAGS_bcm2837-rpi-3-b-plus := -@
+DTC_FLAGS_bcm2837-rpi-cm3-io3 := -@
+DTC_FLAGS_bcm2837-rpi-zero-2-w := -@
+DTC_FLAGS_bcm2711-rpi-400 := -@
+DTC_FLAGS_bcm2711-rpi-4-b := -@
+DTC_FLAGS_bcm2711-rpi-cm4-io := -@
+DTC_FLAGS_bcm2835-rpi-zero := -@
+DTC_FLAGS_bcm2835-rpi-zero-w := -@
dtb-$(CONFIG_ARCH_BCM2835) += \
bcm2835-rpi-b.dtb \
bcm2835-rpi-a.dtb \
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-05-30 17:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-30 17:56 [PATCH 0/2] arm*/dts: Enable symbols for rpi device trees Uwe Kleine-König
2023-05-30 17:56 ` Uwe Kleine-König
2023-05-30 17:56 ` [PATCH 1/2] arm64: dts: broadcom: Enable device-tree overlay support for RPi devices Uwe Kleine-König
2023-05-30 17:56 ` Uwe Kleine-König
2023-05-30 17:56 ` Uwe Kleine-König [this message]
2023-05-30 17:56 ` [PATCH 2/2] arm: dts: " Uwe Kleine-König
2023-06-01 14:02 ` [PATCH 0/2] arm*/dts: Enable symbols for rpi device trees Uwe Kleine-König
2023-06-01 14:02 ` Uwe Kleine-König
2023-06-01 14:13 ` Conor Dooley
2023-06-01 14:13 ` Conor Dooley
2023-06-01 15:37 ` Florian Fainelli
2023-06-01 15:37 ` Florian Fainelli
2023-06-01 17:40 ` Florian Fainelli
2023-06-01 17:40 ` Florian Fainelli
2023-06-01 20:55 ` Uwe Kleine-König
2023-06-01 20:55 ` Uwe Kleine-König
2023-06-08 14:07 ` Cristian.Birsan
2023-06-08 14:07 ` Cristian.Birsan
-- strict thread matches above, loose matches on Subject: below --
2022-04-10 22:59 [PATCH 0/2] arm/arm64: dts: Enable device-tree overlay support for RPi devices Aurelien Jarno
2022-04-10 22:59 ` [PATCH 2/2] arm: " Aurelien Jarno
2022-04-10 22:59 ` Aurelien Jarno
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