This is a note to let you know that I've just added the patch titled arm64: dts: ls1012a: Add serial alias for ls1012a-rdb to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm64-dts-ls1012a-add-serial-alias-for-ls1012a-rdb.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 2d01e4313eccbe72b11ea2f03f2784881d8dd211 Author: Kuldeep Singh <kuldeep.singh@xxxxxxx> Date: Thu Sep 9 16:42:29 2021 +0530 arm64: dts: ls1012a: Add serial alias for ls1012a-rdb [ Upstream commit 7f31ae6e01da140e34d6513815253e811019f016 ] U-boot atempts to read serial alias value for ls1012a-rdb but couldn't do so as it is not initialised and thus, FDT_ERR_NOTFOUND error is reported while booting linux. Loading fdt from FIT Image at a0000000 ... Description: ls1012ardb-dtb Type: Flat Device Tree Data Start: 0xab111474 Data Size: 11285 Bytes = 11 KiB Architecture: AArch64 Load Address: 0x90000000 Loading fdt from 0xab111474 to 0x90000000 Booting using the fdt blob at 0x90000000 Uncompressing Kernel Image Loading Device Tree to 000000008fffa000, end 000000008ffffc14 ... OK WARNING: fdt_fixup_stdout: could not read serial0 alias: FDT_ERR_NOTFOUND NOTICE: RNG: INSTANTIATED Starting kernel ... Fix the above error by specifying serial value to duart. Signed-off-by: Kuldeep Singh <kuldeep.singh@xxxxxxx> Signed-off-by: Shawn Guo <shawnguo@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1012a-rdb.dts b/arch/arm64/boot/dts/freescale/fsl-ls1012a-rdb.dts index 79f155dedb2d0..e662677a6e28f 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1012a-rdb.dts +++ b/arch/arm64/boot/dts/freescale/fsl-ls1012a-rdb.dts @@ -15,6 +15,7 @@ / { compatible = "fsl,ls1012a-rdb", "fsl,ls1012a"; aliases { + serial0 = &duart0; mmc0 = &esdhc0; mmc1 = &esdhc1; };