This is a note to let you know that I've just added the patch titled

ARM64: dts: meson-gxl: Add alternate ARM Trusted Firmware reserved memory zone

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: arm64-dts-meson-gxl-add-alternate-arm-trusted-firmware-reserved-memory-zone.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 4ee8e51b9edfe7845a094690a365c844e5a35b4b Mon Sep 17 00:00:00 2001

From: Neil Armstrong narmstrong@baylibre.com Date: Wed, 11 Oct 2017 17:23:12 +0200 Subject: ARM64: dts: meson-gxl: Add alternate ARM Trusted Firmware reserved memory zone

From: Neil Armstrong narmstrong@baylibre.com

commit 4ee8e51b9edfe7845a094690a365c844e5a35b4b upstream.

This year, Amlogic updated the ARM Trusted Firmware reserved memory mapping for Meson GXL SoCs and products sold since May 2017 uses this alternate reserved memory mapping. But products had been sold using the previous mapping.

This issue has been explained in [1] and a dynamic solution is yet to be found to avoid loosing another 3Mbytes of reservable memory.

In the meantime, this patch adds this alternate memory zone only for the GXL and GXM SoCs since GXBB based new products stopped earlier.

[1] http://lists.infradead.org/pipermail/linux-amlogic/2017-October/004860.html

Fixes: bba8e3f42736 ("ARM64: dts: meson-gx: Add firmware reserved memory zones") Reported-by: Jerome Brunet jbrunet@baylibre.com Signed-off-by: Neil Armstrong narmstrong@baylibre.com Signed-off-by: Kevin Hilman khilman@baylibre.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+)

--- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi @@ -49,6 +49,14 @@

/ { compatible = "amlogic,meson-gxl"; + + reserved-memory { + /* Alternate 3 MiB reserved for ARM Trusted Firmware (BL31) */ + secmon_reserved_alt: secmon@05000000 { + reg = <0x0 0x05000000 0x0 0x300000>; + no-map; + }; + }; };

&ethmac {

Patches currently in stable-queue which might be from narmstrong@baylibre.com are

queue-4.14/arm64-dts-meson-gxl-add-alternate-arm-trusted-firmware-reserved-memory-zone.patch