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). Devicetree bindings are included in the driver series. Last version at https://lore.kernel.org/linux-devicetree/20241101-asahi-spi-v3-0-3b411c5fb8e5@xxxxxxxxxx/ This series passes `make CHECK_DTBS=1 dtbs` with the spi bindings except for "local-mac-address" for the Bluetooth device (I need get back to this). [1] https://github.com/WhatAmISupposedToPutHere/asahi-nvram/ Signed-off-by: Janne Grunau <j@xxxxxxxxxx> --- Hector Martin (1): arm64: dts: apple: t8103: Fix spi4 power domain sort order Janne Grunau (4): arm64: dts: apple: t8103: Add spi controller nodes arm64: dts: apple: t8112: Add spi controller nodes arm64: dts: apple: t600x: Add spi controller nodes arm64: dts: apple: Add SPI NOR nvram partition to all devices arch/arm64/boot/dts/apple/spi1-nvram.dtsi | 39 +++++++++++++++ arch/arm64/boot/dts/apple/t600x-common.dtsi | 7 +++ arch/arm64/boot/dts/apple/t600x-die0.dtsi | 28 +++++++++++ arch/arm64/boot/dts/apple/t600x-gpio-pins.dtsi | 14 ++++++ arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi | 2 + arch/arm64/boot/dts/apple/t600x-j375.dtsi | 2 + arch/arm64/boot/dts/apple/t8103-jxxx.dtsi | 2 + arch/arm64/boot/dts/apple/t8103-pmgr.dtsi | 18 +++---- arch/arm64/boot/dts/apple/t8103.dtsi | 68 ++++++++++++++++++++++++++ arch/arm64/boot/dts/apple/t8112-jxxx.dtsi | 2 + arch/arm64/boot/dts/apple/t8112.dtsi | 44 ++++++++++++++++- 11 files changed, 216 insertions(+), 10 deletions(-) --- base-commit: 98f7e32f20d28ec452afb208f9cffc08448a2652 change-id: 20241101-asahi-spi-dt-58245bb1da3e Best regards, -- Janne Grunau <j@xxxxxxxxxx>
