Re: [PATCH v2 0/5] Add Apple SPI controller and spi-nor dt nodes
From: Sven Peter <hidden>
Date: 2025-02-18 16:56:24
Also in:
asahi, linux-arm-kernel, lkml
On Tue, 03 Dec 2024 08:57:56 +0100, Janne Grunau wrote:
This series adds SPI controller and SPI NOR flash device nodes to the man Apple silicon SoC dts files. Only the subset of used SPI controllers is added. Five SPI controllers exists according to pmgr ADT data but the commits only add controllers found in use on any of the devices. The parameters for the missing nodes are guessable but there's no point in adding them since no further M1 or M2 devices are expected. Together with controller nodes the first SPI device is added. All Apple silicon devices connect a SPI NOR flash to spi1. This holds Apple's 1st stage bootloader, firmwares, platform and machine specific config data and a writeable key-value store (nvram). Expose only the nvram as mtd partition since it has use beyond exploring the content. Tools from asahi-nvram [1] can modify the (default) boot configuration (asahi-bless), read Bluetooth sync keys (asahi-btsync) and read and write arbitrary keys (asahi-nvram). [...]
Applied, thanks!
[1/5] arm64: dts: apple: t8103: Fix spi4 power domain sort order
commit: 1f7af2931158a5e819ac71bcba91e961ac5ca3ea
[2/5] arm64: dts: apple: t8103: Add spi controller nodes
commit: 556cd4bbb45bb5a73042c02b7e5c982112a6ed1f
[3/5] arm64: dts: apple: t8112: Add spi controller nodes
commit: 0a6d561c7e46bf46b886af209e8ebedb6d500680
[4/5] arm64: dts: apple: t600x: Add spi controller nodes
commit: d08e455a865c99a8050addf4dc001bcfdf1b7b8b
[5/5] arm64: dts: apple: Add SPI NOR nvram partition to all devices
commit: 3febe9de5ca5267618675650871a626d0901f8cb
Best regards,
--
Sven Peter [off-list ref]